bluuebunny/crossref_metadata_2025 huggingface dataset:
Computational Study on the Aerodynamic and Acoustic Rotorprop Test in the NFAC 40- by 80-Foot Wind Tunnel
Authors:   US Army CCDC AcMC, Jia Zhongqi , Lim Joon , Jain Rohit
Published: June 2023

This paper focuses on the validation and investigation of interactional acoustics of a modern wing and pusher propeller configuration, which was tested in the National Full-Scale Aerodynamics Complex (NFAC) 40- by 80-Foot Wind Tunnel and the Army 7- by 10-Foot Wind Tunnel at NASA Ames Research Center. Isolated propeller and wing-propeller configurations were simulated in this work. The CFD simulations were carried out using the High Performance Computing Modernization Program (HPCMP) multi-disciplinary rotorcraft simulation tool CREATE™-AV Helios, and the acoustics were simulated using the noise prediction software PSU-WOPWOP. The propeller-wing case showed a 2/rev abrupt change of sectional airloads when blade cuts through the flowfield convected from the wing in the upstream, resulting in impulsive acoustic pressure pulses. Acoustics prediction for the propeller-wing case showed good agreement with the measured data. However, the isolated propeller case showed large discrepancies between predictions and measurements. The overall sound pressure level comparison between the isolated propeller and wing-propeller cases suggested that the wing and propeller interaction could significantly increase the propeller noise by up to 17 dB.
Experimental and Numerical Investigation of Isolated Swept Rotors for UAVs
Authors:   Virginia Tech, Pisharoti Naina , Whelchel Jeremiah , Alexander W. , Brizzolara Stefano
Published: June 2023

An in-depth investigation into the effects of sweep on the aerodynamic and aeroacoustic performance of a rotor is carried out in this study. Dynamically similar swept and unswept rotor designs were tested and compared at the Virginia Tech Open Jet Wind tunnel for varying rotational rates and inflow speeds. It was observed that introducing sweep did not compromise the aerodynamic performance. Noise measurements indicated that the swept rotor has a lower noise signature in the mid-frequency range (∼0.5-5 kHz). Further, the broadband and tonal components were separately studied and it was observed that the noise reduction in the swept rotor is largely due to reduced broadband noise. Additionally, a URANS CFD analysis was carried out using the SSG/LRR-omega-gamma transition turbulence model to further understand near-wall flow and wake characteristics. A qualitative analysis of the flow suggested that the swept rotor exhibited lower levels of blade wake interaction compared to the unswept geometry.
Acoustic Predictions for Side-by-Side Rotor with Ground Effect
Authors:   University of California, Sagaga Jared , Lee Seongkyu
Published: June 2023

Influence of the ground plane on the performance, aerodynamics, and aeroacoustics of NASA's side-by-side Urban Air Mobility (UAM) reference vehicle rotors in hover is investigated using high-fidelity computational fluid dynamics (CFD) and aeroacoustics simulations. CFD simulations are carried out with Helios, while acoustics calculations are conducted using PSU-WOPWOP. Two overlap cases, each at two different rotor heights, are considered. The results demonstrate a significant influence of the ground plane on rotor performance, with the figure of merit (FM) increasing as the distance between the rotors and the ground is reduced. The 0% overlap configuration shows an increase in blade sectional thrust, pressure fluctuations, and resulting noise levels compared to the 25% overlap configuration, primarily due to lower induced velocity as a result of having no rotor overlap, allowing upwash to reach the rotor disk plane. Aerodynamic interactions intensify with the presence of the ground plane and become more pronounced as the rotor-ground distance decreases. The 25% overlap configuration is found to provide a noise reduction benefit of 3-4 dBA near the ground compared to the 0∖% overlap configuration. Furthermore, a considerable difference is observed in the noise directivity between A-weighted and unweighted OASPL. A-weighting notably reduces regions of acoustic interference.
Towards Accurate Broadband Noise Predictions Using CFD
Authors:   University of California, Won Jordon , Trembois Nikos , Lee Seongkyu
Published: June 2023

Rotor broadband noise can be predicted using various numerical and analytical methods. This paper explores the application of computational fluid dynamics (CFD) combined with Lee's wall pressure spectrum and Amiet's trailing edge noise model to predict broadband noise, comparing the results to different experiments. A simple, ideally twisted rotor blade with the NACA 0012 airfoil in hover is employed to establish the appropriate methodology for integrating CFD with other models. Two approaches are utilized: the first is a direct input approach, where flow data from the CFD solution is directly input into the models, while the second approach employs CFD to inform XFOIL inputs, which subsequently provide inputs for the wall pressure spectrum and acoustic model. The CFD/XFOIL approach demonstrates better agreement with experimental measurements and is less sensitive to CFD pre- and post-processing setups. The Straight Up Imagining (SUI) Endurance rotor is also validated for forward flight, followed by the prediction of broadband noise generated by a propeller and wing configuration. Observed trends during the validations and predictions suggest that airfoil selection and blade geometry play a more significant role in the magnitude of trailing edge noise than thrust.
An Analytic Method to Predict Rotor BladeWake Interaction Noise
Authors:   University of Hartford, Li Sicheng
Published: June 2023

This paper presents a low-fidelity and analytical method for predicting rotor blade-wake interaction (BWI) noise. The method analyzes the rotor wake geometry, potential blade-vortex interaction (BVI) locus, rotor inflow distribution, rotor trim settings, leading-edge noise model, and turbulence development of the rotor tip vortices. The predictions of rotor BWI noise are validated against experiments on three rotor conditions with varying tip-path-plane angles of attack. Good agreement is found in the frequency range where BWI noise dominates. The results show that BWI noise is mainly contributed by the forward region of the disk, where vortices experience minimal interference from the blade prior to BWI noise generation. The study also shows that the low-fidelity wake model effectively captures the effects of tip-path-plane angle variation. The higher αTPP rotor gives much smaller noise levels due to the further distance between the vortex and the blade in the third disk quadrant. The predictions of BWI noise on an eVTOL-scale rotor indicate that BWI is the dominant broadband noise source for the sensitive frequencies of human hearing.
The Effects of Rotor-Rotor and Rotor-Wing Interactions on eVTOL Aeroacoustics
Authors:   Rensselaer Polytechnic Institute, Smith Brendan , Hebbar Ullhas , Gandhi Dr.
Published: June 2023

This study examines the effect of aerodynamic interactions on a two-rotor pair in cruise, and a propeller acting in the presence of a wing. The two-rotor system with a forward and an aft rotor in-line is considered at different disk loadings (6, 8, 12 lb/ft² for a fixed cruise speed and different cruise speeds (20, 40, 60 knots) for a fixed disk loading. Loads for these rotors are generated using the CFD solver AcuSolve to capture the aerodynamic interactions on the rear rotor due to the front rotor. These loads are used as inputs to an acoustic solver (PSU-WOPWOP, ANOPP2) to predict noise at observers in the rotor plane, with noise compared to that from isolated rotors in the absence of aerodynamic interactions, to quantify the interaction effects. The rotor wing case, with the rotor in front of the wing operating in axial propeller mode, is simulated at 24 knots cruise and 8 degree wing angle of attack. Loads for the rotor with a wing and a rotor acting in isolation are generated using the CFD solver AcuSolve. These loads are used as inputs to an acoustic solver, with observers placed in the plane of the rotor, in the plane containing the wing chord cut through the rotor hub, and a vertical plane through the hub in the wind direction. The two-rotor system simulation results show that the presence of aerodynamic interactions on the rear rotor results in changes in noise levels of less than 2 dB in the plane of the rotors. The rotor wing results show that the aerodynamic interactions increase the overall noise by up to 8 dB, with the largest increase being above and behind the prop-rotor.
Design of a Lift+Cruise eVTOL Aircraft reflecting the Geometry and Structural Details regarding Battery Locations
Authors:   Seoul National University, Cha WonSeok , Park SunHoo , Hwang MinHo , Chang YooHo , Ahn ChiHyun , Shin SangJoon
Published: June 2023

The concept of Advanced Air Mobility (AAM) has gained significant attention in recent years, leading to the development of many conceptual and external designs. However, there has been limited academic investigation into the phases after conceptual design, such as preliminary and detailed design, with structural design being a critical component. This paper focuses on the conceptual and preliminary structural design of a lift+cruise eVTOL aircraft, considering battery locations. The conceptual design phase introduces a flexible and rapid design framework that reflects variations in geometry, and the structural design is conducted using simplified form structures to maintain a short design cycle. Structural robustness is evaluated through modal and static structural analysis, with a few manual iterations to meet constraints. The research investigates two battery locations, the fuselage and main wing, and provides weight breakdown data for the designed present lift+cruise eVTOL model.
Surrogate-model based Optimization Framework for the Structural Design of Helicopter Rotor Blades subject to Dynamics and Failure Criteria
Authors:   German Aerospace Center (DLR), Majeti Rohin , Becker Franziska
Published: June 2023

Helicopter rotor hub vibratory loads can be alleviated through careful design of the rotor blade inner structure. Large design space and the nonlinear nature of the problem are major obstacles that need to be overcome. Apart from that, the need for high-fidelity solutions lead to high computational times. An automated surrogate-model based design optimization process using commercially available software as well as codes developed within DLR has been described in this paper. Minimal human interference and overall process efficiency is the goal of this work. Latin Hypercube Sampling function for the design of experiments, Kriging function for surrogate modeling and particle swarm optimization algorithm make up the framework. The rotor blade inner structure parameters constitute the design variables while the natural frequencies and vibration index are taken as objective functions. Results show that through careful design of the inner structure, it is possible to obtain a rotor with lower hub vibratory loads. For the optimization process, it must be ensured that sufficient number of sampling points are taken for building accurate surrogate models and the problem definition should be neither under-constrained nor over-constrained.
46 Years of Flight Test - Sikorsky's Development Flight Center
Authors:   Sikorsky a Lockheed Martin Company, Alldridge Phil , Posset Adam , Herter John
Published: June 2023

Sikorsky's Development Flight Center (DFC) began operations in March of 1977, just days before the first flight of the S-76® commercial utility helicopter. Since then, the facility has witnessed a significant number of 'first flights', with development and production programs spanning from small, unmanned, air vehicles (UAV) through to the massive CH-53K heavy lift helicopter, culminating in the recent S-97 RAIDER® and Sikorsky-Boeing SB<1 DEFIANT® programs for the U.S. Army's Future Vertical Lift (FVL) program. This paper will walk the reader through the construction of this unique flight test facility located in the midst of the Florida wetlands, and will highlight some of the major, and often innovative, test programs performed over the last 46 years.
Extended Use of Strategic Air mobility in Cambodia Could Have Won the Vietnam War in 1970
Authors:   Georgia Institute of Technology, Schrage Daniel
Published: June 2023

The purpose of this paper is partially to trace the evolution of air mobility in the U.S. Army and how it was utilized in the Vietnam War in 1970. The integration of aircraft into the organic structure of the ground forces is as radical a change as the move from the horse to the truck1. In the Vietnam War the process was only beginning. Because this change is not the product of one man or one small group of men but rather a fortunate confluence of technology, tactics, and imagination, proper credit to every responsible individual is impossible. I have tried to utilize my experiences in South Vietnam and Cambodia to describe how air mobility was utilized.
eVTOL Rotor Performance and Acoustic Noise Study Using Unified Comprehensive Modeling and Acoustic Analysis
Authors:   Advanced Rotorcraft Technology, Yang SeungJoon ,   US Army DEVCOM ARL, Gerdes John ,   University of Maryland, Baeder James , Bather Jagdeep , He Chengjian , Ware Christopher , Jayasundara Dilhara
Published: June 2023

A study of eVTOL AAM (Advanced Air Mobility) flight performance characteristics and acoustic signature is performed using a seamless unified comprehensive rotorcraft modeling and acoustic analysis toolkit. This toolkit includes a rotor design optimization function within the framework to support eVTOL modeling, analysis, and design. Parametric studies of both isolated rotor and multi-rotor configurations were conducted featuring design optimization that considered both the rotor performance and the acoustic signature. The utility usage with a dual-rotor configuration is included to validate the prediction accuracy and capabilities of the toolkit for multi-rotor configurations. The tool has been further validated using acoustic test data for an generic eVTOL hexa tiltrotor fly-over. Good correlation of the variation trend between the measured flight test data and the simulation results was seen. Simulation of a full eVTOL air vehicle using the multi-objective optimized rotor design was also performed to demonstrate the usage of the unified tool.
Comparative Analysis and Identification of Spike Mutations in Iranian COVID-19 Samples from the First Three Waves of Disease
Authors: Shoaei Parisa , Ranjbar Mohammad M. , Tokhanbigli Samaneh , Ataei Behrouz , Alibakhshi Abbas , Haghjooy Javanmard Shaghayegh , Ahangarzadeh Shahrzad
Published: June 2023

Background:

The spike surface glycoprotein of SARS-CoV-2 is the essential protein in virus attachment to the target cell and cell entrance. As this protein contains immunodominant epitopes and is the main target for immune recognition, it is the critical target for vaccine and therapeutics development. In the current research, we analyzed the variability and mutations of the spike glycoprotein isolated from 72 COVID-19–positive patients from Iran's first three waves of disease.

Materials and Methods:

The RNA was extracted from nasopharyngeal samples of confirmed COVID-19 cases and served as a template for cDNA synthesis and reverse transcriptase polymerase chain reaction. The reverse transcriptase polymerase chain reaction products of each sample were assembled and sequenced.

Results:

After analysis of 72 sequences, we obtained 46 single nucleotide polymorphisms, including 23 that produce amino acid changes. Our analysis showed that the most frequent mutation was the D614G (in the samples of the second and third waves).

Conclusions:

Our findings suggest that developing effective vaccines requires identifying the predominant variants of SARS-CoV-2 in each community.
Identification of Potential Key Genes Linked to Gender Differences in Bladder Cancer Based on Gene Expression Omnibus (GEO) Database
Authors: Rasti Azam , Abazari Omid , Dayati Parisa , Kardan Zahra , Salari Ali , Khalili Masoud , Motlagh Fatemeh Movahedi , Modarressi Mohammad Hossein
Published: June 2023

Background:

Growing evidence strongly indicates pivotal roles of gender differences in the occurrence and survival rate of patients with bladder cancer, with a higher incidence in males and poorer prognosis in females. Nevertheless, the molecular basis underlying gender-specific differences in bladder cancer remains unknown. The current study has tried to detect key genes contributing to gender differences in bladder cancer patients.

Materials and Methods:

The gene expression profile of GSE13507 was firstly obtained from the Gene Expression Omnibus (GEO) database. Further, differentially expressed genes (DEGs) were screened between males and females using R software. Protein–protein interactive (PPI) network analysis, Kyoto Encyclopedia of Genes and Genomes (KEGG), Gene Ontology (GO), and Kaplan–Meier survival analyses were also performed.

Results:

We detected six hub genes contributing to gender differences in bladder cancer patients, containing IGF2, CCL5, ASPM, CDC20, BUB1B, and CCNB1. Our analyses demonstrated that CCNB1 and BUB1B were upregulated in tumor tissues of female subjects with bladder cancer. Other genes, such as IGF2 and CCL5, were associated with a poor outcome in male patients with bladder cancer. Additionally, three signaling pathways (focal adhesion, rheumatoid arthritis, and human T-cell leukemia virus infection) were identified to be differentially downregulated in bladder cancer versus normal samples in both genders.

Conclusion:

Our findings suggested that gender differences may modulate the expression of key genes that contributed to bladder cancer occurrence and prognosis.
Association of Lymphovascular Space Invasion (LVSI) with Histological Tumor Grade and Myometrial Invasion in Endometrial Carcinoma: A Review Study
Authors: Rafiee Azita , Mohammadizadeh Fereshteh
Published: June 2023

Endometrial carcinoma is one of the most frequent gynecological cancers in developed countries. Lymphovascular space invasion (LVSI), histological grade, and myometrial invasion (MMI) are important prognostic factors of endometrial carcinoma. LVSI is considered an independent poor prognostic factor in endometrial carcinoma. Based on the importance of LVSI, this study aimed to discuss the association of LVSI with tumor grade and MMI. A search of PubMed, EMBASE, Web of Science, Scopus, Google Scholar, and Cochrane Library was carried out to collect related studies. Consequently, most studies showed that LVSI is significantly associated with higher histologic grade and deep MMI.
Biotinidase Deficiency in the Second Decade with Atypical Neuroimaging Findings
Authors: Gowda Vykuntaraju K. , Avaragollapuravarga Mathada Amit , Srinivasan Varunvenkat M. , Vamyanmane Dhananjaya K.
Published: June 2023

Biotinidase deficiency is a rare autosomal recessive neurometabolic disorder resulting in biotin deficiency. Our patient presented with seizures and developmental delay since infancy and was started on megavitamin supplements. At 14 years, she presented with motor regression with encephalopathy after discontinuation of vitamins. There were no skin and hair changes. Magnetic resonance imaging (MRI) of the brain showed bilateral symmetrical posterior putamen signal changes. Tandem mass spectroscopy showed increased methyl malonyl carnitine and 3-OH isovaleryl carnitine. There was a low biotinidase level, and a pathogenic variant in the BTD gene in the next-generation sequencing was identified. Special importance is placed on the unusual symmetric posterior putamen involvement seen in MRI of the brain.
Coexistence of Fusion and Birooted Primary Canine in a Child
Authors: Chaudhari Rupal Kishore , Jathar Prasad N. , Desai Aniket R. , Patil Raju Umaji
Published: June 2023

Bilateral birooted primary canine presentation is an exceptionally rare dental oddity, and its occurrence with primary double teeth is even rarer. In Indian literature, fused primary anteriors are the most common dental morphological anomalies, whereas only one case of bilateral birooted primary canines has been published. This article describes the case of a 3-year-old male with a chief complaint of pain and intraoral swelling associated with fused primary anterior teeth, wherein supernumerary roots in primary canines found bilaterally were an incidental radiographic finding. This case thus emphasizes the importance of a thorough and comprehensive intraoral and radiographic examination using numerous angulations for facilitating early diagnosis, favorable treatment outcome, and reduced need for complex orthodontic interceptions for similar dental anomalies.
Проблема делителей Карацубы и родственные задачи
Authors: Gabdullin Mikhail Rashidovich , Konyagin Sergei Vladimirovich , Iudelevich Vitalii Victorovich
Published: June 2023

Доказано, что
$$
\sum_{p \leq x} \frac{1}{\tau(p-1)} \asymp \frac{x}{(\log x)^{3/2}}, \qquad
\sum_{n \leq x} \frac{1}{\tau(n^2+1)} \asymp \frac{x}{(\log x)^{1/2}},
$$
где $\tau(n)=\sum_{d\mid n}1$ - количество делителей числа $n$, а суммирование в первой сумме ведется по простым числам.
Библиография: 14 названий.
Лакуны в спектре тонкостенного прямоугольного бесконечного короба Дирихле с периодическим семейством перегородок
Authors: Nazarov Sergei Aleksandrovich
Published: June 2023

Рассматривается спектральная задача Дирихле для оператора Лапласа в бесконечном тонкостенном прямоугольном коробе с периодическим семейством перегородок, толщина которых пропорциональна толщине стенок. При помощи асимптотического анализа доказано раскрытие лакун в спектре при "тонких" или "достаточно толстых" перегородках, для которых относительная толщина ограничена сверху или снизу некоторыми характеристиками модельных задач Дирихле в $\mathsf L$- и $\mathsf T$-образных областях на плоскости и объединении взаимно перпендикулярных двух половин и одной четверти пространственных слоев. Сформулированы многочисленные открытые вопросы, в частности, из-за отсутствия информации о пороговых резонансах в трехмерной модельной задаче осталась неизученной структура спектра в случае перегородок всех промежуточных толщин.
Библиография: 35 названий.
Plating, Brush, Tin-Zinc Low Hydrogen Embrittlement
Authors:   AMS B Finishes Processes and Fluids Committee
Published: June 2023

This specification covers the requirements for brush plating of tin-zinc by electrodeposition.
Rubber: Fluorosilicone (FVMQ), Engine Oil / Fuel-Resistant, For Seals in Engine Oil Systems/Fuel Systems
Authors:   AMS CE Elastomers Committee
Published: June 2023

This material has resistance to diester-based engine oil (MIL-PRF-7808) and fuel, but usage is not limited to such applications. This material is not suitable for use in synthetic phosphate ester based hydraulic fluids (AS1241) or helicopter transmission lubricating oils (DOD-PRF-85734, MIL-PRF-32538). For gas turbine engine lubricating oils (AS5780, MIL-PRF-23699), resistance varies by class and should be evaluated individually (see Note regarding high performance oils). This material has a typical service temperature range of -70 to +392 °F (-56.7 to +200 °C) for Class 1 and Class 2 and -70 to +437 °F (-56.7 to +225 °C) for Class 3. The service temperature range of the material is a general temperature range, but the presence of particular fluids and specific design requirements may modify this range. Each application should be considered separately. It is the responsibility of the user to determine that this specification is appropriate for the environments (temperature range, fluids exposure, etc.) in which it is sought to be used.
Inboard Mounted Disc Brake Rotor/Disc Wheel Hub Interface Dimensions - Commercial Vehicles
Authors:   Truck and Bus Wheel Committee
Published: June 2023

This SAE Recommended Practice establishes dimensions and tolerances for the interface between inboard mounted disc brake rotors and disc wheel hubs. This document is intended for inboard mounted disc brake rotors and disc wheel hubs for Class 5, 6, 7, and 8 commercial vehicles. Special and less-common applications are not covered.
Alarm - Backup - Electric Laboratory Performance Testing
Authors:   OPTC3, Lighting and Sound Committee
Published: June 2023

The scope of this SAE Standard is the definition of the functional, environmental, and life cycle test requirements for electrically operated backup alarm devices primarily intended for use on off-road, self-propelled work machines as defined by SAE J1116 (limited to categories of (1) construction, and (2) general purpose industrial).
Rayleigh phase velocity and azimuthal anisotropy from ambient noise data in the Sanjiang lateral collision zone in the SE margin of the Tibetan plateau
Authors: Tian Jianhui , Gao Yuan , Li Ying
Published: June 2023

The Sanjiang lateral collision zone in the SE margin of the Tibetan Plateau is located at the east edge of the junction of the Eurasian and Indian plates. Using the continuous seismic waveforms recorded by 146 temporary and 21 permanent seismic stations in the study area, we obtain Rayleigh wave phase velocity and azimuthal anisotropy for periods 2 s to 40 s from the surface wave direct tomography method. This direct tomography method can obtain finer high-resolution results than the traditional surface wave tomography. Our results show that the low-velocity anomalies are found beneath the Lijiang-Xiaojinhe fault (LXF), Red River fault (RRF), Chuxiong fault and Tengchong volcanoes, the high-velocity anomalies are in the region of Weixi and Panzhihua at periods 5 ~ 8 s. The fast velocity directions mainly align N-S. At periods 10 ~ 15 s, the distributions of low-velocity anomalies are consistent with the strikes of LXF and RRF. At periods 20 ~ 35 s, the high- and low-velocity anomalies are bounded by the RRF, which may imply the fault is divided by the thick crust (indicated by low-velocity anomalies) and the thin crust with shallow mantle (indicated by high-velocity anomalies). The fast velocity directions at the periods 10 ~ 35 s rotate clockwise from north to south of the study area. The intensity of anisotropy in the low-velocity zone is stronger than that in the high-velocity zone, and the intensity in the north of the study area is stronger than that in the south. Results indicate the source of anisotropy may be different in each subzone.
OCR17: Ground Truth and Models for 17th c. French Prints (and hopefully more)
Authors: Gabay Simon , Clérice Thibault , Reul Christian
Published: June 2023

Machine learning begins with machine teaching: in the following paper, we present the data that we have prepared to kick-start the training of reliable OCR models for 17th century prints written in French. The construction of a representative corpus is a major challenge: we need to gather documents from different decades and of different genres to cover as many sizes, weights and styles as possible. Historical prints containing glyphs and typefaces that have now disappeared, transcription is a complex act, for which we present guidelines. Finally, we provide preliminary results based on these training data and experiments to improve them.

L'apprentissage machine commence avec l'enseignement machine : dans cet article, nous présentons les données que nous avons préparées pour entraîner des modèles OCR fiables pour les imprimés du XVIIe siècle écrits en français. La construction d'un corpus représentatif est un enjeu majeur : il faut rassembler des documents de différentes décennies et de différents genres pour couvrir un maximum de tailles, de graisse et de styles. Les imprimés historiques contenant des glyphes et des caractères aujourd'hui disparus, la transcription est un acte complexe, pour lequel nous présentons des lignes directrices. Enfin, nous fournissons des résultats préliminaires basés sur ces données d'entraînement et des expériences pour les améliorer.
Izolacija emergentnih ljudskih patogena i patogena koji se prenose hranom u kliničkim slučajevima infekcija od pasa i mačaka zaprimljenih u veterinarsku kliniku u sjevernom Portugalu
Authors: Rodrigues Melissa Alves , Coelho Ana Cláudia , Fontes Maria da Conceição , Esteves Alexandra , Costa José Álvaro
Published: June 2023

Nowadays, dogs and cats are considered family members, translating into increased proximity to humans. Studies have shown that 40-60% of owners have very close interactions e.g., sharing the same dish, face lickings, or sleeping on the same bed. This promotes the exchange of microorganisms between species. Therefore, an One Health approach should be applied to encompass both human and animal health problems. In this study, 37 cases of companion animals (54.1% dogs and 45.9% cats) in a veterinary clinic in northern Portugal were analysed, and urinary and eye infections, respiratory conditions, and dermatological problems were confirmed. According to sample type, 43.2% were from urine, 13.5% from ear exudate, 8.1% from skin exudate, 8.1% from trachealexudate, 2.7% from vaginal exudate, 2.7% from conjunctiva exudate, 2.7% from purulent exudate, 2.7% from bronchoalveolar exudate, 2.7% from ocular exudate, and 2.7% from blood. In all, 21 pathogen species were isolated, of which Pantoea agglomerans, Cronobacter sakazakii, Leclercia adecarboxylata, Sphingomonas paucimobilis are currently considered emerging agents of human infection. The occurrence of these species was 2.4% for Leclercia adecarboxylata (one young male cat), 2.4% for Pantoea agglomerans (one adult male dog), 2.4% for Cronobacter sakazakii (one adult male dog), and 2.4% for Sphingomonas paucimobilis (one adult male dog). Leclercia adecarboxylata is a gram-negative bacillus of the Enterobacteriaceae family. It is a ‘novel’ rare human pathogen, mostly affecting immunocompromised individuals or causing polymicrobial infections in immunocompetent patients. Cronobacter sakazakii is an emerging foodborne pathogen that causes necrotizing enterocolitis and bacteremia in humans, Pantoea agglomerans is associated with a hospital-acquired infection, mostly in immunocompromised individuals with a fatal outcome. Sphingomonas paucimobilis is an emerging opportunistic bacterium with a particular tropism toward bones and soft tissues. The intimate relationship between humans and companion animals presents a potential risk for the transmission of zoonotic pathogens. Therefore, more research based on an One Health approach should be performed to more accurately determine the occurrence and incidence of emerging agents between species.
Diagnóstico socioambiental da atividade de mineração no Distrito de Montepuez-Moçambique
Authors: Julião Maxlhaieie Martinho
Published: June 2023

A alteração na dinâmica socioambiental no distrito de Montepuez, Moçambique, foi motivada pela exploração dos recursos naturais (em especial pedras preciosas e semipreciosas), atraindo as multinacionais como a Montepuez Ruby Mining, que em 2011 foi lhe concessionada uma área de 36.000 hectares, na qual se explora o rubi, turmalina, águas marinhas, granadas, e algumas variedades do coríndon. Num cenário otimista esta atividade pode trazer benefícios socioeconômicos tanto para a população local, quanto para a economia do país, mas também desencadeia uma série de impactos negativos sobre o meio, em especial ao solo, ar e biodiversidade, com isso, explorou-se através da utilização da ferramenta de medição de indicadores, avaliar a dinâmica sociambiental, no Posto Administrativo de Namanhumbir, período de 2014-2019. A abordagem assume – se como estudomparativo, complementada com a recolha de dados no campo relativo a informação sobre as dimensões do (Bem estar Sociambiental), cujos indicadores de sustentabilidade retratam a realidade da região, baseada nas directrizes do Plano Nacional de Desenvolvimento Territorial, em face do avanço de grandes projectos de mineração e seus impactos nas comunidades locais. Os resultados apontam que Namanhumbir, encontra-m situação "Potencialmente Insustentável", para a dimensão socioambiental com um índice (64,8) para o período de 2014, e uma classificação "Intermedia" de (65,4) no ano de 2019, indicando neste contexto a necessidade de acções proactivas para melhorar os sub indicadores do bem-estar social, acima de tudo na participação das comunidades na tomada de decisões sobre as políticas públicas de desenvolvimento local.
Dispositivos que vinculan. LATE Lab: metodologías para la creación y experimentación colectiva.
Authors: Maggi Camila Renè
Published: June 2023

Esta comunicación recoge mi experiencia práctica y aprendizajes en el proyecto LATE Lab, un laboratorio ciudadano de creación y experimentación colectiva en torno al cuerpo y los dispositivos extracorporales. LATE Lab es el principal proyecto del cual parte mi hipótesis de investigación, que intenta responder y habitar desde la práctica la pregunta en torno a cómo los artefactos corporales pueden ser un instrumento para mediar y producir nuevos vínculos. Un hacer que permite pensar el cuerpo desde/para encarnar otras formas de pensar, hacer, habitar o saber y que no surge como respuesta a la función productiva o reparadora de cuerpos, sino que responde a la generación de nuevos imaginarios.
Desvelando las claves metodológicas de LATE Lab sitúo las herramientas, tácticas, protocolos, materiales y métodos que mi práctica despliega y que permiten experimentar y crear de forma colectiva maneras de transformar los vínculos entre nosotros y en relación con el entorno. Una práctica que permite encarnar de forma sensible esta pregunta, para explorar otras maneras de ser y componerse con el mundo.
DEPENDENCIA! Interdependencias a través de la investigación artística y en diseño
Authors: Moncunill-Piñas Mariona
Published: June 2023

El concepto de dependencia tiende a ser usado con un marcado tono negativo, como sinónimo de vulnerabilidad y falta de autonomía, ya sea en relación a la dependencia política y económica entre territorios, a la dependencia funcional y física entre personas debido a enfermedades o diversidades corporales y funcionales que no encajan con las estandarizaciones capacitistas, a la dependencia económica de unos individuos o colectivos respecto a otros, a la de unos seres vivos respecto a otros, a la dependencia global tecnológica, energética o de materias primas, a la dependencia a las drogas o incluso a la dependencia emocional.

Es por eso el presente número de Inmaterial recoge tres propuestas de investigación en arte y en diseño que se acercan desde distintos puntos de vista a la vida interdependiente, reconociéndola, situándola en el centro, repensándola, analizándola, poniéndola en juego y en valor.
Designing for Interdependence: A Poetics of Relating
Authors: Rowan Jaron
Published: June 2023

Reseña del libro Designing for Interdependence : a Poetics of Relating del investigador y diseñador Martín Ávila.
¡Dependencia! Interdependencias a través de la investigación artística y en diseño.
Authors: Moncunill-Piñas Mariona
Published: June 2023

El presente número de Inmaterial recoge tres artículos y una reseña de una monografía en investigación en arte y en diseño que se acercan desde distintos puntos de vista a la vida interdependiente, reconociéndola, situándola en el centro, repensándola, analizándola, poniéndola en juego y en valor.
Prospects for using the phytoremediation method for deactivation of territories contaminated with radionuclides
Authors:   International Sakharov Environmental Institute, Belarusian State University, Rodzkin Aleh I. , Tsybulka Mikalai M. ,   International Sakharov Environmental Institute, Belarusian State University
Published: June 2023

Soil contamination with radionuclides, the main cause of which is the accident at the Chernobyl nuclear power plant, is one of the most dangerous negative environment impact factors. Phytoremediation including cultivation of «energy» crops is an effective method for decontamination of territories contaminated with radionuclides. The advantage of this approach is the possibility of using biomass as a renewable source of green energy in combination with the gradual reclamation of polluted soils. A promising crop for the purposes of phytoremediation is willow, the fast-growing species of which provide a high yield of biomass from a production plantation. A problematic issue is the safe use of willow biomass. The assessment of the conditions for the transition of radioactive cesium into willow biomass was carried out on the territories of Belarus contaminated after the Chernobyl accident. Experiments have shown that the predicted content of 137Cs in the wood of a fast-growing willow is significantly lower than the level allowed for wood fuel according to the standards established for the Republic of Belarus (740 Bq/kg). Even at the level of soil pollution at which they are removed from agricultural use (40 Ci/km2), the content of 137Cs in wood will be from 35 to 120 Bq/kg (depending on the dose of potash fertilizers).
Assessment of the dynamics of changes in the area of water-related ecosystems: national approach
Authors:   Central Research Institute for Complex Use of Water Resources, Tavrykina Oksana М. , Dubianok Sniazhana A. ,   Belarusian National Technical University, Gromadskaya Elena I. ,   Central Research Institute for Complex Use of Water Resources, Ivashko Egor A. ,   Central Research Institute for Complex Use of Water Resources, Makus Anton Z. ,   Central Research Institute for Complex Use of Water Resources, Shpakova Dar’ya А. ,   Central Research Institute for Complex Use of Water Resources
Published: June 2023

SDG indicator 6.6.1 «Change in the extent of water-related ecosystems over time» is designed to protect the integrity of ecological functions and preserve the biodiversity of water-related ecosystems - lakes, reservoirs, rivers, flooded wetlands, etc. The development of a national methodology for assessing the dynamics of changes in the area of water-related ecosystems is due to the need to generate data on the indicator within the framework of international approaches, to create a single database for making management decisions on the conservation of fresh water and the communities of plants, animals and microorganisms interacting with it.According to the concept of the international methodology, taking into account national characteristics, a project of national methodology was developed to calculate the proxy indicator 6.6.1.1 «Dynamics of changes in the area of surface water bodies», which is formed by comparing data on the area of lakes, reservoirs and rivers of the base period with the subsequent target five-year period. Based on the comparison of the base and target periods, the percentage change in spatial extent is calculated. To calculate the percentage change in spatial extent, data on the areas of lakes, reservoirs and rivers included in the Register of Surface Water Bodies of the Republic of Belarus, geoportal data on land types, certification results, cartographic calculations based on GIS, VIS and UAV own aerial photography are used. The calculation of changes in the water surface area for lakes, reservoirs, rivers was carried out. It is shown that in the study period (2018-2022), compared with the previous one (2008-2012), the water surface area of lakes (total number 2041), reservoirs (total number 84), rivers (total number 19) decreased respectively by 7,83 km2 or 0,63 %, 2,03 km2 or 0,31 %, 2,15 km2 or 0,27 %. Data, in accordance with the developed methodology, will be generated for a five-year period starting from 2023.
Interrupciones furiosas. Una aproximación a los transfeminismos antiespecistas y posthumanistas en Argentina
Authors: González Anahí Gabriela
Published: June 2023

Este artículo propone una breve cartografía de los transfeminismos antiespecistas y posthumanistas en el contexto latinoamericano, enfocándose en algunas intervenciones teórico-prácticas de activistas en Argentina. Se busca mostrar que tales perspectivas emergieron como prácticas plurales, heterogéneas y localizadas orientadas a propiciar otras formas de vivir y habitar el mundo. Para ello, en primer lugar, se sitúan dichas reivindicaciones en el escenario de la irrupción de diversos (trans)feminismos latinoamericanos, poniendo énfasis en la importancia que han tenido las luchas travestis trans* en el territorio argentino. En segundo lugar, se retoman algunos trabajos orientados a pensar las articulaciones entre cisheteronormatividad, especismo y colonialidad. En tercer lugar, en el marco del despliegue del Ni Una Menos en Argentina, se analizan algunas intervenciones activistas antiespecistas, travestis, anticapacitistas e indígenas, a la par que se rastrean los modos en que la reivindicación de lo animal emerge como lugar de resistencia en la heterogeneidad de estas reivindicaciones. Como conclusión, se propone que la noción de animalidad puede pensarse como punto de encuentro de insurrección política de diferentes voces transfeministas antiespecistas y posthumanistas.
El frío concepto de lo humano. Vínculos feministas prometedores
Authors: Burgos Díaz Elvira
Published: June 2023

En este trabajo la noción moderna occidental de sujeto se presenta como problema. El objetivo que se persigue es analizar los efectos dañinos y violentos que ocasiona. Se argumenta que el sujeto impermeable, rígido, autónomo, racional, asfixia la vida en su multiplicidad. Con esta finalidad, se realiza una reflexión crítica del dualismo metafísico en la que se mostrará que las aportaciones feministas son las más adecuadas para problematizar al sujeto abstracto descorporalizado y para articular concepciones de la subjetividad menos excluyentes y más habitables. Los textos de Butler nos conducen al sujeto performativo, un sujeto constituido en la interdependencia y en la vulnerabilidad. El feminismo del colectivo del río Combahee nos propone la imbricación de las categorías que nos configuran y que, también, nos oprimen. Lorde redefine las diferencias y las formula en interconexión y en una dimensión creativa. La obra de Ahmed retoma la fuerza del feminismo negro en su propuesta de los conceptos sudorosos. Curiel denuncia al sujeto colonial moderno y sus consecuencias evidentes en el presente. En definitiva, el trabajo concluye afirmando los pensamientos feministas que subvierten al sujeto humanista y su organización jerárquica del mundo.
1960’lardan 2000’lere Kuşak ve Sınıf Ekseninde İzmir’de Kadınların Kamusal Mekân Deneyimlerinin İzini Sürmek
Authors: ÇELİK Faika , SAYAN-CENGİZ Feyda
Published: June 2023

Bu çalışmanın amacı, 1960’lı yılların ortalarından 1990’lı yılların sonuna kadar İzmir’de kadınların kamusal mekân deneyimlerini, kuşak ve sınıf eksenlerinde değerlendirmek ve birbirini takip eden farklı iki kuşağa mensup kadınların deneyimlerindeki süreklilik ve dönüşümleri irdelemektir. İzmir’de yaşayan kadınların kamusallığının kuruluşunda, kamusal mekân deneyimlerinin etkisini kesişimsellik yaklaşımı çerçevesinde irdeleyen çalışma, kamusal mekân deneyimlerinin kuşak ve sınıf eksenlerinde nasıl farklılaştığını ve bu deneyimlerin sürekliliklerini/ortak yanlarını sorgulamaktadır. Araştırma, İzmir’in farklı bölgelerinde yaşayan, farklı sınıfsal konumlardan gelen ve birbirini takip eden iki kuşağa ait 29 kadın ile yapılan derinlemesine mülakatlara dayanmaktadır. Çalışmanın ana bulguları, şu şekilde özetlenebilir: 1) İkinci kuşaktan kadınların anlatıları, birinci kuşağa kıyasla kamusal mekânın daha rahat kullanıldığını ve deneyimlenen mekânların artıp çeşitlendiğini gösterir. 2) Kadınlar, “ev”in dışına, “kamusal”a çıkmanın kendileri için içerdiği çeşitli bedellerden bahsetmişlerdir. Ücretli yardım alabilen üst-orta sosyoekonomik sınıfa mensup kadınların anlatılarında, bu bedel göreceli olarak daha hafiftir. 3) Öte yandan, farklı kuşak ve sınıftan kadınların kamusal mekân deneyimlerinde ortaklıklar da vardır ve İzmir Fuarı, Kemeraltı Çarşısı gibi kadınların geçmişten beri kullanageldiği kentsel mekânlar bu süreklilikte önemlidir
Çevrimiçi Cinsel Taciz Ölçeği’nin Türkçe’ye Uyarlanması: Geçerlik ve Güvenirlik Çalışması
Authors: ESEN Erol , ÖZTÜRK Barışcan , KAVAL Adil
Published: June 2023

Bu çalışmanın amacı, Çevrimiçi Cinsel Taciz Ölçeği’nin Türkçe’ye uyarlamasını gerçekleştirmek, bu kapsamda geçerlik ve güvenirlik çalışmalarını yapmaktadır. Çalışmanın bir diğer amacı ise üniversite öğrencilerinin çevrimiçi cinsel tacize maruz kalmalarının cinsiyete göre farklılık gösterip göstermediğinin incelenmesidir. Çalışmaya 340 üniversite öğrencisi (221 kadın, 119 erkek) katılmıştır. Ölçeğin yapı geçerliğini incelemek amacıyla 340 katılımcıdan elde edilen veri seti ile Doğrulayıcı Faktör Analizi (DFA) yapılmıştır. Ölçeğin orijinalinde olduğu gibi 12 maddeden oluşan 2 faktörlü (cinsel ilgi ve cinsiyet temelli taciz) yapısı doğrulanmıştır. DFA sonucunda ulaşılan uyum iyiliği değerlerinin kabul edilebilir düzeyde olduğu görülmüştür (χ2/df= 3.77; GFI= .91; SRMR= .045; CFI= .95; NFI= .93; IFI= .95; TLI= .94). Cinsel ilgi ve cinsiyet temelli taciz boyutlarına ve ölçeğin bütününe ilişkin Cronbach alfa değerleri sırasıyla .93, .83, .94 olarak bulunmuştur. Çevrimiçi Cinsel Taciz Ölçeği (ÇCTÖ)’nin Türkçe formunun çevrimiçi cinsel taciz deneyimini ölçmek amacıyla kullanılabilecek geçerli ve güvenilir bir ölçme aracı olduğu söylenebilir. Bununla birlikte araştırmada kadın katılımcıların çevrimiçi cinsel taciz puan ortalamalarının hem alt boyutlarda hem de ölçeğin bütününde erkeklere göre anlamlı şekilde yüksek olduğu, istenmeyen cinsel ilgiye ve cinsiyet temelli tacize daha yoğun şekilde maruz kaldıkları belirlenmiştir.
JOSEPH RATZINGER – UMA PROFECIA SOBRE O FUTURO DA IGREJA
Authors: Melo Antonio Alves de
Published: June 2023

O falecimento do papa emérito Bento XVI ocasionou um debate em torno de sua atuação no exercício do primado petrino. Esta nota pretende apenas destacar a “esquecida profecia sobre o futuro da Igreja” feita por ele há quarenta anos quando era professor de teologia, e o discurso de abertura da Conferência de Aparecida em 13/5/2007, agora como Bento XVI.  Os dois textos se completam e ao mesmo tempo demonstram a complexidade do pensamento deste discípulo de Jesus e teólogo-papa.
ASPECTOS DO PENTECOSTALISMO ASSEMBLEIANO BRASILEIRO NA PERSPECTIVA SECULARIZADA
Authors: Gonçalves Braitner Silva , Santos Júnior Paulo Jonas dos , Espírito Santo Magno Lessa do
Published: June 2023

Em pouco mais de cem anos de fundação a Assembleia de Deus se tornou a maior igreja evangélica do Brasil. Entende-se que a urgência missionária atribuída ao movimento pentecostal, a ênfase na cura divina, a atualidades dos dons espirituais e a mensagem escatológica, contribuíram para que essa denominação alcançasse esse grande crescimento. Nota-se que a capacidade de adaptação e dinamismo dessa igreja foi fator preponderante para que a ação de propagação do evangelho alcançasse êxito em uma sociedade permeada por atualizações em seu estilo de vida; nesse caso, destaca-se o papel da secularização, que gradativamente corroborou desapego à religiosidade. Para tanto, no contexto brasileiro essa instituição religiosa, ao longo do tempo, tem cumprido um papel de agregar dignidade social e empoderamento discursivo, levando muitos marginalizados a terem novas perspectivas sociais.