bluuebunny/crossref_metadata_2025 huggingface dataset:
The NIEP and the positive realization problem
Authors: Benvenuti Luca
Published: June 2020

The nonnegative inverse eigenvalue problem is the problem of determining necessary and sufficient conditions for a multiset of complex numbers to be the spectrum of a nonnegative real matrix of size equal to the cardinality of the multiset itself. The problem is longstanding and proved to be very difficult so that several variations have been defined by considering particular classes of multisets and nonnegative real matrices. In this paper, a novel variation of the problem is proposed. This variation is motivated by a practical application in the positive realization problem, that is the problem of characterizing existence and minimality of a positive state--space representation of a given transfer function.
Determinants of Normalized Bohemian Upper Hessenberg Matrices
Authors: Fasi Massimiliano , Negri Porzio Gian Maria
Published: June 2020

A matrix is Bohemian if its elements are taken from a finite set of integers. An upper Hessenberg matrix is normalized if all its subdiagonal elements are ones, and hollow if it has only zeros along the main diagonal. All possible determinants of families of normalized and hollow normalized Bohemian upper Hessenberg matrices are enumerated. It is shown that in the case of hollow matrices the maximal determinants are related to a generalization of Fibonacci numbers. Several conjectures recently stated by Corless and Thornton follow from these results.
Second harmonic generation characterization of collagen in whole bone
Authors: Pendleton Emily G. , Tehrani Kayvan F. , Barrow Ruth P. , Mortensen Luke J.
Published: June 2020

Bone is a unique biological composite material made up of a highly structured collagen mesh matrix and mineral deposits. Although mineral provides stiffness, collagen’s secondary organization provides a critical role in bone elasticity. Here, we performed polarimetric analysis of bone collagen fibers using second harmonic generation (SHG) imaging to evaluate lamella sheets and collagen fiber integrity in intact cranial bone. Our polarimetric data was fitted to a model accounting for diattenuation, polarization cross-talk, and birefringence. We compared our data to the fitted model and found no significant difference between our polarimetric observation and the representation of these scattering properties up to 70 µm deep. We also observed a loss of resolution as we imaged up to 70 µm deep into bone but a conservation of polarimetric response. Polarimetric SHG allows for the discrimination of collagen lamellar sheet structures in intact bone. Our work could allow for label-free identification of disease states and monitor the efficacy of therapies for bone disorders.
Study of the effects of 3.1 THz radiation on the expression of recombinant red fluorescent protein (RFP) in E. coli
Authors: Zhao Jiping , Hu Erling , Shang Sen , Wu Dai , Li Peng , Zhang Peng , Tan Dan , Lu Xiaoyun
Published: June 2020

In recent years, many studies have been conducted to investigate the non-thermal effects of THz radiation on different organisms, but further studies are needed to fully elucidate the effects, especially on the molecular level. In this study, we explored the effects of at 3.1 THz radiation on protein expression in Escherichia coli (E. coli) using red fluorescent protein as a reporter molecule. After 8 hours of continuous THz irradiation of bacteria on LB (Luria-Bertani) solid plates at an average power of 33 mW/cm2 and 10 Hz pulse repetition frequency, we found that the plasmid copy number, protein expression and fluorescence intensity of bacteria from the irradiated area were 3.8-, 2.7-, and 3.3 times higher than in bacteria from the un-irradiated area, respectively. These findings suggest that plasmid replication changed significantly in bacteria exposed to 3.1 THz radiation, resulting in increased protein expression as evidenced by increased fluorescence intensity of the RFP reporter.
Inter-layer light transition in hybrid III-V/Si waveguides integrated by µ-transfer printing
Authors: Kou Rai , Hiratani Takuo , Yagi Hideki , Kuwatsuka Haruhiko , Yen Tzu-Hsiang , Okano Makoto , Ohno Morifumi , Kawashima Hitoshi , Suzuki Keijiro , Fujiwara Naoki , Shoji Hajime , Yamada Koji
Published: June 2020

We demonstrate low-loss and broadband light transition from III-V functional layers to a Si platform via two-stage adiabatic-crossing coupler waveguides. A 900-µm-long and 2.7-µm-thick III-V film waveguide consisting of a GaInAsP core and InP cladding layers is transferred onto an air-cladding Si photonic chip by the µ-transfer printing (µ-TP) method. An average optical coupling loss per joint of 1.26 dB is obtained in C + L telecommunication bands (1530-1635 nm). The correlation between alignment offset and measured optical coupling loss is discussed with the frequency distribution of µ-TP samples. We also performed a photoluminescence measurement to investigate the material properties in the GaInAsP layer to see if they are distorted by the strong bending stress produced during the pick-up and print steps of the µ-TP process. The peak intensity reduction of 80-90% and a wavelength shift of 0-5 nm (blue shift) were observed after the process. The series of fundamental studies presented here, which combine multiple analyses, contribute to improving our understanding of III-V/Si photonic integration by µ-TP.
Characteristics of a bidirectional multifunction focusing and plasmon-launching lens with multiple periscope-like waveguides
Authors: Xing Tonglu , Bai Tairong , Tang Yang , Lu Zhiyu , Huang Yulan , Balmakou Aliaksei , Wang Jicheng
Published: June 2020

A device incorporating a series of periscope-like waveguides to achieve bidirectional focusing and plasmon launching is proposed. Optimizing the number, positions, and dimensions of the waveguides and tuning the waveguide optical paths both produce the required phase shifts to shape wavefronts and achieve constructive interference at the desired points. Due to the symmetry and reversibility of the structure, the lens can focus the light incident on both sides. Energy redistribution to a specific multi-focus can also be achieved by applying appropriate phase shifts. This simple and high performance structure makes the bidirectional plasmonic launcher easy to implement in various application situations.
Compact single-end pumped Brillouin random fiber laser with enhanced distributed feedback
Authors: Xu Yanping , Lu Ping , Bao Xiaoyi
Published: June 2020

A compact sub-kilohertz linewidth Brillouin random fiber laser (BRFL) based on a linear cavity scheme with single-end pumping and enhanced distributed Rayleigh feedback from fiber random gratings (FRGs) is proposed and demonstrated. The improved FRGs with low transmission loss make the single-end pumped linear cavity configuration achievable without sacrificing the lasing capability, which contributes to a more compact setup for easy integration and packaging. The enhanced Rayleigh feedback from the FRG enables a high-efficiency random lasing resonance of the Stokes wave via stimulated Brillouin scattering in the lasing cavity. More importantly, the single-end pumped scheme, unlike the previously reported bi-directionally pumped BRFL, significantly alleviates the lasing instabilities and noises induced by the counter-propagating laser beams through the Brillouin-active medium, thus exhibiting lower lasing noises. Single-longitudinal-mode operation of the proposed random laser is realized with a narrow linewidth of

∼

0.97

k
H
z

.
Analytical formulation of a high-power Yb-doped double-cladding fiber laser
Authors: Peysokhan Mostafa , Mobini Esmaeil , Mafi Arash
Published: June 2020

A detailed formalism to achieve an analytical solution of a lossy high power Yb-doped silica fiber laser is introduced. The solutions for the lossless fiber laser is initially attained in detail. Next, the solution for the lossy fiber laser is obtained based on the lossless fiber laser solution. To examine the solutions for both the lossless and lossy fiber laser, two sets of values are compared with the exact numerical solutions, and the results are in a good agreement. Furthermore, steps and procedures for achieving the final solutions are explained clearly and precisely.
COVID-19 pathology and therapeutics
Authors: El-menshawy Hadeer , Sorour Khaled
Published: June 2020

The SARS-CoV-2 pandemic has hit the world by surprise since its first outbreak in Wuhan, China resulting in millions of cases and thousands of deaths around the globe. The current situation is challenged by the lack of knowledge about the COVID-19 pathogenesis. Experts are not sure about the primary driver for mortality, is it the virus or the host immune response. The highly noted difference in outcomes reflects that individuals could react uniquely in response to infection where the inflammatory processes appear to impact the course and outcome of infection. Moreover, findings that came from COVID-19 autopsies suggest that SARS-CoV-2 pneumonia could transform to a severe form of ARDS. This paper aims at addressing briefly various complications observed in COVID-19 patients and providing a list of drugs that could be incorporated as a part of standard care for patients that are most severely affected by SARS-CoV-2 infection.
An Improved Lock-Free Binary Search Tree
Authors: Whitlock Nicholas , Luis Jose , Shannon Sam , Alano Mark , 4520 COP
Published: June 2020

We investigated the binary search tree data structure proposed in the publication, Efﬁcient Lock-Free Binary Search Trees by Bapi Chatterjee, Nhan Nguyen and Philipas Tsigas. We will explore its correctness, progression factor, and the linearizability of its operations and report our ﬁndings. With a lock-free algorithm, software engineers will be able to use a thread-safe binary search tree that is capable of the many different operations that are normally available on a binary search tree. This includes the basic, primitive operations of Add(), Contains(), and Remove(), without the performance loss of using a binary search tree that uses object locking. An implementation of a binary search tree that uses locks to promote thread-safety takes a performance loss due to the threads waiting when another thread holds the lock and causing contention. The approach outlined in the aforementioned paper claims to have several key fundamental improvements over existing lock-free binary search tree algorithms. This implementation of the binary search tree eliminates contention in Contains() operations where, if a node was modiﬁed while a Contains() operation took place, the program would restart any current operation from the root of the tree. This happens because the thread can no longer reliably conﬁde in the traversal of the tree and must restart its search. This is taxing to the performance of a binary search tree and an inefﬁcient design can underperform a sequential implementation. Among other improvements, the authors of this paper claim that their algorithm is linearizable and has improved disjoint-access parallelism compared to similar existing algorithms.
The Periodic Law of Particles
Authors: Zhan Shanshi
Published: June 2020

A statistical analysis of particles shows that particles have an overall and regular relationship. All particles occupy a due amount of space-time according to their attributes. Particles with similar attributes form families. The stability of particles in the same family decreases with their increase in mass (energy). Between families, periodic changes of stability and instability are shown. This paper is based on the classification of many particles. All particles are included in the particleperiodic table (PPT) established herein. The PPT sums up the regularity of particle contact and predicted (supposed) new particles.
Design and Control of a Hydraulic Based Tire Changer using H infinity and H2 Optimal Synthesis Controllers
Authors: jibril mustefa , Tadese Messay , Alemayehu Eliyas
Published: June 2020

In this paper, the design and control of a hydraulic system based tire changer machine have been analyzed and simulated using Matlab/Simulink Toolbox successfully. The machine have a displacement input which is a leg pedal displacement in order to push the piston of the pump to fed the motor with a pressured hydraulic fluid to rotate the tire with an angular speed to mount and dismount it. Augmentation based H and 2 H optimal synthesis controllers have been used to improve the performance of the machine. Comparison of the proposed controllers for tracking a reference input speed have been done using two reference inputs (step and random) signals. Finally the comparative simulation results proved the effectiveness of the proposed tire changer with H synthesis controller in improving the settling time and percentage overshoot.
Bio-inertia resonates life into evolution
Authors: Lai Yi Yu
Published: June 2020

Life is an environmental signalcompromise d Le Châteliers system. The potential for it toissue Le Châteliers effect to discernable signals is de fin e d as bio inertia. To track the origin of such system recovering capability, we composite brachistochrone curves with experiments to provethat a path which can be projecting into three dimensional simple harmonic motion with internalcommutation is an efficient sustaining signal accumulat ing and transferring path. It is thereforedefined as bio quantum path (or bio perpetual motion path which composed of the fundamentalphysical structures of bio systems. The function of such a structure is to strengthen conservativeforces by splicing out non conservative forces f rom Le Châteliers process es . Experimentscalibrate horizontal gravitational loss as empirical bio inertia and reveal the cause for thediscrepancy between inertia l mass and gravitational mass in bio systems. By adapting C hu s constantinto Planck's law and the born of the S chrödinger Cat s bab ies , the fragile Copenhagensuperposition becomes converging super positio n which sustaining the lifespan of a non isolatedsystem . The Schrödinger wave function is therefore upgraded into repeatabilitysuperposition which equivalent s to the horizontal & vertical repeatability superposition definition ofthe binding Einstein gravitational wave s in bio systems and all rest on Newtonian turnover stationaryupgrading for inversion recovery . W ave particle duality is reinterpreted and a frequency notationwhich can be adapted to music , quantum mechanics till bio systems is established From the bindingand inversions of gravity on bio quantum pa th s , l ife is physically abiogenesis from a whirlpool withenough time commutation and continuously polarization by splicing. NKT cell clinical trial based onnew CSF stationary definition finally confirm s that ancient physical striking system s are stillun surpass able for dealing with cancer and other senility problems unless modern bio technologieswithout any physical consideration can touch eigen inversion converging patterns which enough toreplace above ancient interference in so me day
Molecular Docking and Admet Analyses of Photochemicals from Nigella sativa (blackseed), Trigonella foenum-graecum (Fenugreek) and Anona muricata (Soursop) on SARS-CoV-2 Target
Authors: TAOFEEK OLUWASEUN
Published: June 2020

The novel severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2) responsible for the 2019 coronavirus disease (COVID-19) has caused a global health challenge. The SARS-COV-2 main protease, 3CLpro/Mpro plays a critical role in the viral gene expression and replication and has been a major target for inhibiting viral maturation and enhancing host innate immune responses against COVID-19. In this study, we screened a library of 38 phytochemicals from
Nigella sativa (blackseed),
Trigonella foenum-graecum (Fenugreek) and
Anona muricata (Soursop) potent medicinal plants with reported antiviral properties - in a molecular docking protocol on 3CLpro using Autodock4.0 tool implanted in PyRx followed by docking validation and insilico absorption, distribution, metabolism, excretion, and toxicology (ADMET) evaluations. The docking results were visualized using Accelrys Discovery Studio and Pymol software. Among the 38 ligands screened, 19 showed significant interaction through non-covalent hydrogen bonding, hydrophobic, and electrostatic interactions with binding affinities from -5.3kcal/mol to -8.1kcal/mol indicating significant binding interactions at the active site binding pocket. Another important interaction observed in the study which mostly involve the transfer of charges was pi-interactions such as Pi-Pi interaction, Pi-Alkyl interaction, Pi-Sulfur interaction, Pi- Sigma, and Pi-Pi stacking. The docking results revealed that phytochemicals from
T. foenum-graecum showed more 3CLpro inhibitory potential compared to those from
N. sativa and A. muricata. Insilico ADMET evaluations for drug-like and lead-like characteristics however demonstrated that only 8 ligands - apigenin, kaempferol, luteolin, dithymoquinone, naringenine, nornuciferine, quercetin and nigellidine were actually drug-like; showed best activities against 3CLpro, and lack hepatotoxicity effects while none was lead-like. Insilico results of this study further suggested that drug repurposing candidates, remdesivir, indinavir,hydroxychloroquine, chloroquine and ritonavir,exhibited various interactions with 3CLpro. Hence, further
in

vitro and
in vivo studies are proposed.
Implementation of Scalable Lock-Free Vector with Combining
Authors: Albury John , Borde Dax , Garrison Matthew , Snyder Richard , 4520 COP
Published: June 2020

In Scalable Lock-Free Vector with Combining [1], Walulya and Tsigas introduce the ﬁrst implementation of a concurrent, lock-free vector that utilizes combining to increase performance. In our project, we implement this concurrent vector as described in [1] and describe our approach here. We also implement a concurrent vector utilizing a Software Transactional Memory library. We compare the performance of our two implementations to each other and to the authors performance evaluations.
How Islamic Finance can affect the Financial Stability?
Authors: Mohamed Taher Sassi , Kinski Marius
Published: June 2020

Abstract

The subprime mortage crisis during the years 2007-2010 demonstrated the weaknesses of the conventional system of finance. The inherent speculative element of this system, which is fueled through the logic of interest additionally, brought attention to alternative approaches in order to recover control over the financial system. Islamic finance, a system relatively young in practice, contributed its part to the ongoing discussion on financial stability and has to present its own tools for this huge task. This paper wants to outline the ongoing theoretical discussion and empirical evidence concerning the question of financial stability and the role of Islamic finance in it. Main results found was Islamic finance has contributed to the overall financial stability. The survival of this financial system through the crisis of 2007-2008 has made it more and more interesting to investigate and to develop. The question of tradeoff between stability and profitability of this financial system remains under investigation as the conventional financial sector continues to be more profitable but less stable. The new avenue of the research channel in the financial sector could measure this tradeoff taking into account the future challenges.
Towards Computationally Creating Multi-answer Queries for the Remote Associates Test
Authors: Olteteanu Ana-Maria , Yoopoo Kunkanit
Published: June 2020

The Remote Associates Test is a creativity test used to assess human participants' ability for association. Small normative datasets of queries exist for this test; however, such datasets do not deal with the issue of potential multiple answers to the same test query. In this work we create a large dataset of queries to which multiple answers are possible. The computational work to create such a dataset is presented, together with the metrics relating to this dataset. The applications of this tool for the investigation and modeling of creative processes of association in human cognition are also discussed.
Lower Gastrointestinal Hemorrhage Caused by Superior Rectal Artery Pseudoaneurysm
Authors: Nguyen Christopher , Baliss Michelle , Tayyem Obada , Merwat Shehzad
Published: June 2020

Acute lower gastrointestinal (GI) bleeding is self-limiting and managed conservatively. Ongoing bleeding from a lower GI source and hemodynamic instability can create difficult diagnostic and therapeutic dilemmas. The severity of bleeding can necessitate emergent diagnostic and therapeutic interventions. Diverticulosis and angiodysplasias are the most common causes of massive lower GI hemorrhage. Other etiologies that can lead to life-threatening hemorrhage are important to recognize. We present a rare case of massive lower GI hemorrhage attributable to a superior rectal artery pseudoaneurysm. The absence of a preceding traumatic or iatrogenic cause distinguishes this case from other reports in the literature.
Apresentação
Authors: Toassa Gisele
Published: June 2020

Desde a publicação dos livros A formação social da mente (1984) e Pensamento e linguagem (1987), a temática deste Dossiê firma-se como uma das mais características da psicologia baseada na obra de Lev Semionovich Vigotski (1896-1934) em nosso país. Mas as configurações da assim chamada teoria histórico-cultural de Vigotski modificaram-se bastante desde as primeiras edições do autor publicadas na Europa e Estados Unidos, mudando com respeito ao viés intelectualista-cognitivista de Jerome Bruner e Michael Cole, principais responsáveis pelo impulso inicial às obras de Vigotski e seu Círculo de pesquisadores no Ocidente. A interpretação cognitivista de Vigotski vem sendo cada vez mais questionada no Brasil e no exterior, por diferentes intérpretes, como Nikolai Veresov, Anton Yasnitsky, Ekatierina Zavershneva, Bader Burihan Sawaya, Fernando González-Rey entre outros. Conceitos como drama/eventos dramáticos, imaginação, afetos e vivências são peças-chave dessa mudança epistemológica, cujas consequências para a pesquisa e intervenção histórico-cultural podem ser constatadas no presente Dossiê.
ANÁLISE TEMPORAL DA DISPONIBILIDADE HÍDRICA NOS ESTADOS BENEFICIADOS PELA TRANSPOSIÇÃO DO RIO SÃO FRANCISCO
Authors: Costa de Brito Higor , Maia Araújo de Brito Yáscara , Dunga de Assis Wanessa , Barbosa Costa Ferreira Yuciara , Sheila Vasconcelos Rochele , Alexandra Alves Rufino Iana
Published: June 2020

O Projeto de Integração do Rio São Francisco foi elaborado a fim de reduzir os impactos das secas nos estados do Semiárido Brasileiro. O artigo realiza uma análise temporal da disponibilidade hídrica nos quatro estados receptores das águas do Projeto de Integração do Rio São Francisco (PISF) através da tabulação cruzada de dados referentes à superfície hídrica e a precipitação anual dos estados no período de 1985 a 2017. Seu principal objetivo consiste na identificação da correlação entre esses dois parâmetros e as inferências que podem ser feitas a partir dos resultados nos 33 anos de análise. A metodologia consiste em determinar a correlação existente entre as áreas classificadas como superfície hídrica pelo projeto MapBiomas e índices pluviométricos obtidos por satélite. São utilizados também dados referentes à recorrência hídrica do produto Global Water Surface para validar a discussão acerca da disponibilidade de água. Os resultados confirmam a seca plurianual ocorrida desde 2012 e a consequente perda significativa de superfície hídrica dos estados, além de identificar um aumento da correlação desse fator com a diminuição da precipitação anual nos estados da Paraíba, Pernambuco e Rio Grande do Norte a partir da década de 90.
An Investigation of Green Product Innovation on Consumer Repurchase Intention: The Mediating Role of Green Customer Value
Authors: SAPUTRA Murry Harmawan , KRISTYASSARI Bening , FARIDA Naili , ARDYAN Elia
Published: June 2020

This study examines the critical role of green customer value in order to increase purchase intention based on green products. Data analysis techniques were carried out using Structural Equation Modeling with Partial Least Square (SEM-PLS). The respondents used in this study were the low-cost green car (LCGC) users in Central Java, Indonesia. The number of samples used was 240, with a purposive sampling technique. The findings of this study indicate that all hypotheses are supported. Green customer value is also proven to mediate (partial mediation) the relationship between green product innovation and repurchase intention. This explains that environmentally friendly product innovation by companies will be able to increase consumer buying interest if green customer value can be proven to be encouraged. The results also show that the consumer repurchase intention is influenced by consumer attitudes towards green brands and the quality perceived by consumers in the green products they use. This finding contributes theoretically and practically.
Determinants of Environmental Disclosure in Indonesia
Authors: KISWANTO KISWANTO , APRIYANI Ika Diah , YANTO Heri , HAJAWIYAH Ain , DJAJADIKERTA Hadrian Geri
Published: June 2020

This study aims to identify the impacts of audit committees, audit committee meetings, and boards of commissioner meetings (BCM) on environmental performance and environmental disclosure (ED). The population of this study was 89 companies listed in LQ45 for the period 2011-2016. By using purposive sampling technique, this study identified 23 companies as samples. Path analysis based on the structural equation model was used. Environmental performance had a significant and positive effect on ED, audit committee meetings also determined ED and BCM, but have no effect on environmental performance. BCM did not have any significant effect on environmental performance. Audit committee had a significant positive effect on audit committee meetings. While size had a positive effect on the audit committee and BCM but did not affect the audit committee meeting. These results indicate that the discussion in audit committee meetings and BCM focused more on the ED rather than environmental performance.
Una economía política y cultural de las subvenciones estatales a la educación privada en Argentina
Authors: Moschetti Mauro Carlos , Lauria Masaro Mauro
Published: June 2020

En comparación con otras modalidades de alianza público-privada (public-private partnerships o PPP) en educación de surgimiento más reciente como los programas de vouchers o escuelas charter inspirados en los postulados de la teoría de la elección pública, las políticas de subvención estatal a la oferta suelen responder a teorías del cambio menos explícitas. La mayoría de estas políticas son abordadas por la literatura como arreglos singulares y altamente idiosincrásicos, en lugar de ejemplos de una variedad particular de PPP. A partir de una revisión de la literatura y del análisis de los debates legislativos del período 1947-2006, este artículo procura examinar el proceso de adopción del marco político-regulatorio definido por la política de subvenciones a escuelas privadas en Argentina desde una perspectiva evolutiva de economía política y cultural. Se distinguen tres períodos a efectos analíticos entre los cuales prima una lógica evolutiva de continuidad no lineal sujeta a los vaivenes contextuales e impulsados por distintos actores en el campo de las ideas y la práctica política.
As políticas públicas para acesso ao ensino superior privado e seus reflexos na qualidade da educação brasileira
Authors: Castro Sabrina Olimpio Caldas de , Almeida Fernanda Maria de
Published: June 2020

As análises que relacionam as políticas de expansão do acesso ao ensino superior com a qualidade da educação têm se voltado majoritariamente aos impactos das ações afirmativas na qualidade da educação ofertada pelas Instituições de Ensino Superior (IES) públicas. A fim de ampliar esta análise ao Prouni e Fies, este artigo possui como objetivo avaliar os efeitos das diferentes modalidades de bolsas e financiamentos, oferecidos pelo governo federal por meio do Prouni e do Fies, sobre o Conceito Enade, considerando os anos de 2009, 2012 e 2015. Para tanto, foram estimados modelos de regressão multinível com dados em painel. Os resultados obtidos permitiram identificar que o Prouni integral influencia positivamente na qualidade da educação, enquanto receber apenas financiamento via Fies não possui efeitos significativos. Estes resultados contribuem para o debate relacionado aos aspectos positivos e negativos destas políticas, apontando o potencial positivo do Prouni e a necessidade de reavaliações, sob diferentes aspectos, quanto ao Fies.
Reversible Cerebral Vasoconstriction Syndrome Associated with a Suprarenal Mass
Authors: Pantoja-Ruiz Camila , Ricaurte-Fajardo Andrés , Ocampo-Navia María Isabel , Coral-Casas Juliana
Published: June 2020

Reversible cerebral vasoconstriction syndrome (RCVS) is characterised by severe thunderclap headaches (with or without the presence of acute neurological symptoms) and segmental vasoconstriction of cerebral arteries that resolves spontaneously in a period of three months. Cases have been described in the literature with producing and non-producing masses of metanephrines. Within these reports, associations with cavernous haemangioma, medulloblastoma, colon cancer, paraganglioma, pheochromocytoma, uterine fibroids, among others were found. However, no association with adrenal masses which do not produce metanephrines was found. In this context, we reported the case of a woman with this type of tumour associated with RCVS which provided a treatment challenge, as well as we reviewed the literature on cases of RCVS associated with masses.
Simple Testing Method for Measuring the Triaxial Stress-Strain Relations of Unsaturated Soils at High Suctions
Authors: Chen Bo , Gao You , Sun De’an , Li Jie
Published: June 2020

Unsaturated soils at high suctions are widespread in arid and semiarid areas. Test data on the mechanical behavior of unsaturated soils are scarce at high suctions. In this article, the effect of void ratio or density on the soil-water retention behavior was discussed on the basis of measured data of various compacted soils at high suctions. According to the test data, the soil-water retention behavior is independent of the dry density or void ratio over a high suction range, namely, if the water content of a soil specimen is kept constant, the suction will be constant and independent of the void ratio (deformation) at high suctions. Therefore, a simple testing method for measuring the stress-strain relations of unsaturated triaxial specimens at high suctions is proposed by combining the vapor equilibrium technique (VET) with saturated salt solutions and the triaxial shear tests at constant water contents. First, a known initial high suction is imposed on the specimen by using the VET with a saturated salt solution. Then, the specimen is triaxially sheared under a constant water content, thereby resulting in a constant high suction during triaxial shearing. The proposed testing method can substantially shorten the testing period for one triaxial test. Finally, the results of triaxial shear tests on silt, silty clay, and expansive soil at high suctions obtained by the proposed testing method are presented.
Ethnic Chinese during the New Order: Teaching Materials Development for History Learning based on Multiculturalism
Authors: Kurniawan Hendra
Published: June 2020

The history of Indonesian Chinese society is still rarely studied in history learning at school. One of them concerns the discriminatory treatment of them during the New Order era. This article aimed to describe discriminatory policies against ethnic Chinese during the New Order era, to present it as a history teaching materials, and to elaborate on the importance of studying it for the younger people. This research used historical and qualitative descriptive method using literature. The result showed that (1) Ethnic Chinese in the New Order era received discriminatory treatment in various sectors. It was a violation of human rights and susceptible to trigger conflict. (2) The study of the Chinese people can be served as a history teaching material in the subject of the New Order era. (3) Teaching materials development is expected to be used to create awareness of multiculturalism through history teaching.Sejarah masyarakat Tionghoa Indonesia masih jarang dikaji dalam pembelajaran sejarah di sekolah. Salah satunya mengenai perlakuan diskriminatif terhadap mereka pada masa Orde Baru. Maka penelitian ini bertujuan untuk mendeskripsikan kebijakan diskriminatif terhadap etnis Tionghoa selama Orde Baru, menyajikannya sebagai bahan ajar sejarah, dan menguraikan arti penting mempelajarinya bagi generasi muda. Penelitian ini menggunakan metode historis dan kualitatif deskriptif dengan studi pustaka. Hasil penelitian menunjukkan bahwa (1) Etnis Tionghoa pada masa Orde Baru menerima perlakuan diskriminatif di berbagai sektor. Hal itu merupakan pelanggaran atas hak asasi manusia dan terbukti rentan konflik. (2) Studi tentang dinamika masyarakat Tionghoa tersebut dapat disajikan sebagai bahan ajar sejarah pada pokok bahasan masa Orde Baru. (3) Kajian tersebut diharapkan dapat menciptakan kesadaran multikulturalisme melalui pembelajaran sejarah.
A contestação sobre rodas: Passo Fundo, os “agitadores” e a revolta dos motoqueiros no contexto da abertura política da ditadura militar
Authors: Vanin Alex Antônio , Biluczyk Roberto
Published: June 2020

O presente trabalho objetiva tratar sobre como se deu a vigilância exercida pelo regime militar em Passo Fundo, RS, durante o mês de fevereiro de 1979, através do Serviço Nacional de Informações (SNI), organismo de fiscalização e supervisão criado em 1964. Busca-se analisar os antecedentes e desdobramentos do evento que ficou conhecido popularmente como Revolta dos Motoqueiros, organizado em protesto pela morte de Clodoaldo Teixeira, jovem de 17 anos baleado nas costas por um policial militar, após uma perseguição. O SNI produziu processos em torno desse caso, apresentado como “perturbação da ordem pública”, identificando e vigiando os supostos agitadores da revolta. Nesse sentido, o acompanhamento do órgão federal sobre a situação é paradigmático para Passo Fundo no período, resultante do questionamento aos poderes instituídos e suas formas de ação em pleno regime de exceção. A documentação analisada possuía estatuto de confidencial no passado, mas hoje está disponível livremente no site do Arquivo Nacional.
Conceitos outros: as coisas e a Virada Ontológica
Authors: Soares Antonio Carlos
Published: June 2020

Este texto pretende discutir as possibilidades de uma abordagem ontográfica sobre a problematização das coisas, ou aquilo que chamamos de “cultura material”. Uma abordagem inserida no contexto da chamada Virada Ontológica, da qual emergem os estudos sobre a alteridade que a partir das coisas, neste caso, produzidas pelo outro, busca “traduzir” em conceitos a ontologia outra e comparar as diferenças conceituais suscitadas durante o processo. Uma comparação translativa entre conceitos produzidos por ambos os agentes teóricos: o nativo e o antropólogo. Os estudos sobre as coisas têm se voltado para concepções mais literalistas acerca, inclusive, da própria definição de “coisa” nos últimos anos, sobretudo quando há o envolvimento de dois ou mais “mundos” na equação. Na Antropologia, o debate sobre a Ontological Turn ocorre com maior velocidade e intensidade, voltando-se para o cerne da própria disciplina, abalando alguns fundamentos modernos que formataram o próprio fazer antropológico. É a partir desse debate, ainda em andamento, que a disciplina que utiliza as coisas como fonte, a Arqueologia, vem buscando reorientar suas análises sobre as coleções resultantes de suas pesquisas.
“Êste é o Humberto” – Estratégias de construção simbólica da revista Realidade no perfil do primeiro líder da ditadura civil-militar
Authors: Filho Jonas Migotto
Published: June 2020

Realidade foi uma revista publicada pela editora Abril entre os anos de 1966 e 1976, durante a ditadura civil-militar brasileira. Em algumas edições, o repórter Luiz Fernando Mercadante publicou uma série de perfis dos líderes do governo ditatorial, um aspecto conservador em uma revista majoritariamente transgressora, principalmente quando pautava o plano dos costumes. Neste artigo, será realizada uma análise do perfil de Humberto de Alencar Castelo Branco, intitulado “Êste é o Humberto”, publicado na edição número 3, de junho de 1966. Para isso, a narrativa é entendida como produtora de formas simbólicas a fim de sustentar relações de dominação e, na análise, também são levados em consideração os aspectos contextuais e iconográficos.
Memória de pertencimento soterrada pelo tempo
Authors: Matos Alexandre Pena , Macedo Joyce Rodrigues
Published: June 2020

O fio condutor desta pesquisa pontua-se no município de Quevedos no Estado do Rio Grande do Sul, sua emancipação ocorreu em 1992, pois até então era considerado o 5.º Distrito de Júlio de Castilhos. Partindo das fontes históricas secundárias, a Igreja se torna o patrimônio material e imaterial dos habitantes, porém os primeiros levantamentos em campo, através de entrevistas com a população local, estes demonstraram um sentimento de ambiguidade em relação a este bem cultural, embora esta esteja situada na praça principal da cidade. Sendo assim, em um universo de 2.710 (duas mil, setecentos e dez) habitante que compõe o município, conforme dados do Instituto Brasileiro de Geografia e Estatística (IBGE) de 2010, as conversas informais com as 121 (cento e vinte e uma) pessoas, o que gera 4,46% da população, estas entrevistas manifestaram uma dualidade no sentimento que rege símbolos no contexto histórico da origem do município. Lembrando que os entrevistados estão dispersos em todas as camadas sociais da população regional. O objetivo central dessa pesquisa é proporcionar um método que permeie a população local para abrir um espaço de debates e reflexão sobre o contexto histórico do município, enfatizando as questões culturais e patrimoniais assim como os seus reflexos nas memórias materiais e imateriais. Com intuito de viabilizar o entendimento sobre sentimentos de pertencimento via construção da identidade, ou seja, da construção de si para interação com o coletivo para o devido entendimento e a preservação das memórias, possibilitando a ressignificação de conceitos relacionado aos bens patrimoniais.
Archaeology and Ideology in a ‘postmodern’ environment: material remains of ideological claims
Authors: O’Donnell John Gabriel
Published: June 2020

According to scholar Fredrik Fahlandar, postmodernism has caused an intellectual identity crisis throughout the humanities. Using his chapter on Postmodern Archaeologies as a guide, this essay attempts to address some of the ways in which archaeology and the other social sciences has actually benefited from the scrutiny of postmodernist criticism, while at the same time maintaining its usefulness and insisting on its ability to avoid a relativistic approach to its research questions. The essay particularly emphasizes archaeology’s on-going relationship to the study of ideology, as both evident within the archaeological record itself and also its influence on the researchers conducting the investigations.***Arqueologia e Ideologia em um ambiente ‘pós-moderno’: restos materiais de reinvindicações ideológicas***Segundo o estudioso Fredrik Fahlandar, o pós-modernismo causou uma crise de identidade intelectual em todas as humanidades. Usando seu capítulo sobre Arqueologias pós-modernas como guia, este ensaio tenta abordar algumas das maneiras pelas quais a arqueologia e as outras ciências sociais realmente se beneficiaram do escrutínio das críticas pós-modernas, enquanto, ao mesmo tempo, mantém sua utilidade e insiste em sua capacidade de evitar uma abordagem relativista de suas questões de pesquisa. O ensaio enfatiza particularmente a relação contínua da arqueologia com o estudo da ideologia, como evidente no próprio registro arqueológico e também sua influência nos pesquisadores que conduzem as investigações.
Apresentação
Authors: Hilbert Klaus , Pompeu Filipi Gomes de , Bezerra Ana Paula Gomes , Melchiades Carlos Eduardo Ferreira
Published: June 2020

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Avaliação do perfil de biomarcadores sanguíneos em adolescentes classificados pelo índice de massa corporal e percentual de gordura corporal
Authors: Bragança Maylla Luanna Barbosa Martins , Oliveira Bianca Rodrigues de , Fonseca Jéssica Magalhães , Batalha Mônica Araújo , Bogea Eduarda Gomes , Coelho Carla Cristine Nascimento da Silva , Kac Gilberto , Silva Antônio Augusto Moura da
Published: June 2020

Resumo: O objetivo do trabalho foi comparar biomarcadores em grupos de adolescentes classificados simultaneamente pelo índice de massa corporal (IMC) e percentual de gordura corporal, mensurados por meio da pletismografia por deslocamento de ar. Estudo transversal com 533 adolescentes de 18 e 19 anos de São Luís, Maranhão, Brasil. O IMC foi classificado em adequado (< 25kg/m2) e excesso de peso (≥ 25kg/m2). Definiu-se percentual de gordura corporal elevado ≥ 25% para o sexo masculino e ≥ o feminino. Os adolescentes foram classificados em quatro grupos: “eutrófico” (IMC e percentual de gordura corporal adequados), “obeso de peso normal” (IMC adequado com percentual de gordura corporal elevado), “excesso de peso com percentual de gordura corporal adequado” e “excesso de peso com percentual de gordura corporal elevado”. As meninas registraram maiores valores de “obesidade de peso normal” (15,6%) e “excesso de peso com percentual de gordura corporal elevado” (17,1%). Os adolescentes “obesos de peso normal” apesentaram maiores médias para colesterol total (172,5mg/dL) e LDL-colesterol (103,5mg/dL). Aqueles com “excesso de peso e percentual de gordura corporal elevado” registraram a menor média para HDL-colesterol (43,2mg/dL) em relação aos outros grupos; maior média para interleucina-6 (2,7pg/mL) em relação aos “eutróficos” e “excesso de peso e percentual de gordura corporal adequado”; e maiores medianas para triglicerídeos (114,0mg/dL) e proteína C reativa (0,14ng/mL) em relação aos “eutróficos” e “obesos de peso normal”. Os com “excesso de peso e percentual de gordura corporal adequado” apresentaram proteína C reativa igual aos com “excesso de peso e percentual de gordura corporal elevado”. A avaliação do estado nutricional pelo IMC é limitada, pois 6,8% dos adolescentes registraram percentual de gordura corporal elevado apesar do IMC normal, além disto, os “obesos de peso normal” apresentaram dois biomarcadores piores que os adolescentes com “excesso de peso e percentual de gordura corporal elevado”.
Ambiente Familiar e Rendimento Escolar de Adolescentes
Authors: Mahendra Fénita Manuel , Marin Angela Helena
Published: June 2020

Resumo O ambiente familiar tem importante ressonância no percurso escolar dos filhos. Portanto, este estudo teve como objetivo avaliar a relação entre diferentes dimensões do ambiente familiar (coesão, conflito, expressividade, independência, assertividade, orientação cultural/intelectual, lazer, religião; organização e controle) e o rendimento escolar de adolescentes com e sem histórico de reprovação. Trata-se de um estudo correlacional e comparativo, de corte transversal e caráter quantitativo, do qual participaram 24 pais e 18 adolescentes com histórico de reprovação escolar, e 19 pais e adolescentes sem histórico de reprovação, os quais responderam a Escala de Ambiente Familiar. A análise de comparação indicou que a dimensão lazer, para os pais, e coesão, para os filhos, foram mais presentes no grupo sem repetência. Além disso, a análise de correlação revelou que a dimensão conflito foi associada ao maior número de reprovações. Conclui-se que um ambiente familiar funcional pode promover o rendimento escolar.
Markers of inflammation and insulin resistance in dogs before and after weight loss versus lean healthy dogs
Authors: Jeremias Juliana T. , Vendramini Thiago H.A. , Rodrigues Roberta B.A. , Perini Mariana P. , Pedrinelli Vivian , Teixeira Fabio A. , Brunetto Márcio A. , Pontieri Cristiana F.F.
Published: June 2020

ABSTRACT: Chronic low-grade inflammation in obesity is characterized by an increased production of pro-inflammatory cytokines that contribute to insulin resistance. For this study body composition, markers of inflammation and of insulin resistance in dogs before and after weight loss were compared to those of lean dogs. Eleven client-owned obese adult dogs underwent a weight loss program with commercial dry food for weight loss and reached an ideal body condition score (BCS) six months after the beginning of the weight loss program. A Control Group of nine dogs with ideal BCS were selected for the comparison. Shapiro-Wilk test was used to test for normality, Mann Whitney were used for non-normally distributes data, and Student t-test was used for normally distributed parameters. In the Obese Group body fat decreased from 41.6% (30.7-58.6) to 29.1% (18.6-46.3) (P<0.01) and dogs maintained lean body mass throughout the weight loss program (P>0.05). Obese dogs presented higher concentration of fructosamine, triglycerides, insulin, IGF-1 and leptin than the Control Group before weight reduction (P<0.05). Serum concentrations of triglycerides, IL-2, IL-6, TNF-α, insulin, leptin and IGF-1 decreased after weight loss (P<0.01), and these concentrations were similar to the Control Group (P>0.05), except for leptin (P<0.001). No alteration on peptide YY was found. Leptin (r=0.60, P=0.01), fructosamine (r=0.44, P=0.02) and triglycerides (r=0.40, P=0.04) concentrations correlated with the reduction of body fat. Weight loss reduced the concentrations of inflammatory and insulin resistance markers and most parameters became similar to dogs that have always been lean, reinforcing the importance of weight loss in small animal practice.
Infectious diseases dynamics in growing/finishing pigs in Southern Brazil (2005-2016)
Authors: Konradt Guilherme , Bassuino Daniele M. , Siqueira Lucas C. , Bianchi Matheus V. , Sonne Luciana , Driemeier David , Pavarini Saulo P.
Published: June 2020

ABSTRACT: This study aimed to determine the frequency and distribution of infectious diseases diagnosed through necropsy examination and histopathological analysis in growing/finishing pigs along 12 years (2005-2016) in Southern Brazil. We evaluated 1906 anatomopathological exams of pigs at growing/finishing phases, of which the infectious diseases corresponded to 75.6% of the cases (1,441/1,906). Porcine circovirus type 2 (PCV2) infections were the most frequent, accounting for 51.3% of the cases (739/1,441) with a higher frequency from 2005 to 2007, characterizing an epidemic distribution, with a gradual decline after 2008. Infectious diseases affecting the respiratory system were the second major cause with 30.1% of the cases. Among these, necrotizing bronchiolitis caused by swine Influenza (15.1%, 218/1,441) and bacterial pneumonia (15%, 216/1,441) were the main conditions. Influenza was mostly diagnosed from 2010 to 2013, accounting for 43.1% (167/387) of the cases. After this period, both respiratory infectious diseases were endemic. Digestive system infectious diseases accounted for 10.5% of the diagnoses (151/1,441), with the following main conditions: Salmonella spp. enterocolitis (43.7%, 66/151), Lawsonia spp. proliferative enteropathy (41.7%, 63/151), and Brachyspira spp. colitis (14.6%, 22/151). The latter had a higher incidence from 2012 to 2014 with all cases detected in this period. Polyserositis and bacterial meningitis represented, respectively, 5.8% (84/1,441) and 2.3% (33/1,441) of the cases diagnosed, with a constant endemic character.