bluuebunny/crossref_metadata_2025 huggingface dataset:
MANAGEMENT OF SOCIO-ECONOMIC DEVELOPMENT OF TOURISM ENTERPRISES
Authors: Kryshtanovych Svitlana , Kindzer Bogdan , Goryn Marta , Kravchenko Alla , Frunza Svitlana
Published: June 2020

To date, the tourism business is developing rapidly and the mountainous territories are not
inferior in competition to other tourist territories. For the development of the tourism business, it is necessary
to conduct effective management of socio-economic development. The main purpose of the study is to identify and assess
the main threats to the socio-economic development of the tourism business in the mountainous territories of Eastern
Europe. We have applied the methods of synthesis, analysis, deduction, induction, mathematical methods, methods of
expert research. The importance of research on the management of socio-economic development of the mountains in the
conditions of increasing the efficiency of the tourism business is proved. Peculiarities of managing the socio-economic
development of the mountains in the conditions of increasing the efficiency of the tourism business are considered.
As a result of the study, threats were identified that most negatively affect the management system of the socio-economic
development of the tourism business in the mountains. The novelty of the study is the formation of coordinate systems
in the trust or distrust of the management and executive staff of travel companies in making management decisions.
Suprathermal Electron Acceleration by a Quasi-perpendicular Shock: Simulations and Observations
Authors: Kong F.-J. , Qin G.
Published: June 2020

The acceleration of suprathermal electrons in the solar wind is mainly associated with shocks driven by interplanetary coronal mass ejections (ICMEs). It is well known that the acceleration of electrons is much more efficient at quasi-perpendicular shocks than at quasi-parallel ones. Yang et al. studied the acceleration of suprathermal electrons with observations at a quasi-perpendicular ICME-driven shock event to claim the important role of shock-drift acceleration (SDA). Here, we perform test-particle simulations to study the acceleration of electrons in this event, by calculating the downstream electron intensity distribution for all energy channels assuming an initial distribution based on the average upstream intensities. Using simulations, we obtain the results similar to the observations from Yang et al. as follows. It is shown that the ratio of downstream to upstream intensities peaks at about 90° pitch angle. In addition, in each pitch angle direction the downstream electron energy spectral index is much larger than the theoretical index of diffusive shock acceleration. Furthermore, the estimated drift length is proportional to the electron energy but the drift time is almost energy independent. Finally, we use a theoretical model based on SDA to describe the drift length and drift time especially, to explain their energy dependence. These results indicate the importance of SDA in the acceleration of electrons by quasi-perpendicular shocks.
A New Multitracer Approach to Defining the Spiral Arm Width in the Milky Way
Authors: Vallée Jacques P
Published: June 2020

We analyze recent observations of the spiral arm width in the Milky Way, as a function of the galactic radius, and we compare this relation with the prediction from the density wave theory. We use the following method: in each spiral arm, we concentrate on the separation (or offset) between the star-forming region (radio masers) near the shock front of a density wave, and the aged star region (diffuse CO gas) near the potential minimum of a density wave; we take this separation between these two tracers as the arm width. New results: we find a typical separation (maser to diffuse CO gas) near 250 ± 50 pc and an increase of this separation with galactic radius of about 25 ± 5 pc per kpc. We note that, as expected, this separation is somewhat smaller than that found earlier between the dust lane and the aged star region. Overall, these results support the basics of a density wave.
Temporal Evolution of the Rotation of the Interplanetary Magnetic Field Bx, By, and Bz Components
Authors: Xiang N. B. , Ning Z. J. , Li F. Y.
Published: June 2020

The daily interplanetary magnetic field (IMF) B

x
, B

y
, and B

z
components from 1967 January 1 to 2018 December 31 listed in the OMNI database are used to investigate their periodicity and study temporal variation of their rotation cycle lengths through continuous wavelet transform, autocorrelation, and cross-correlation analyses. The dominant rotation period in each of the daily B

x
, B

y
, and B

z
components is 27.4 days, implying the existence of rotational modulation in the three time series. The dependence of the rotation cycle lengths for both B

x
and B

y
components on solar cycle phase almost shows the same result. The rotation cycle lengths for both B

x
and B

y
components increase from the start to the first year of a new Schwabe cycle, then decrease gradually from the first to the fourth year, and finally fluctuate around the 27.4-day period within a small amplitude from the fourth year to the end of the Schwabe solar cycle. For the B

z
component, its rotation cycle length does not show such a solar cycle variation. The significant periods in the variation of B

x
rotation are 2.9, 3.4, 4.3, 4.9, 10.5, and 11.9 yr, and there exist significant periods of 3.4, 9.9, and 14.1 yr in the variation of B

y
rotation. The relationship of solar activity with B

x
and B

y
components is complex. The possible mechanisms for the temporal variation of the rotation period of the three components are discussed.
Comparing Approximate Bayesian Computation with the Poisson-Likelihood Method for Exoplanet Occurrence Rates
Authors: Kunimoto Michelle , Bryson Steve
Published: June 2020

We present Kepler exoplanet occurrence rates inferred with approximate Bayesian computation (ABC). By using the same planet catalog, stellar sample, and characterization of completeness and reliability as Bryson et al. (2020), we are able to provide the first direct comparison of results from ABC to those derived with the popular Poisson-likelihood method. For planets with orbital periods between 50 and 400 days and radii between 0.75 and 2.5 R
⊕, we find an integrated occurrence rate

F

0

=

0.596

−
0.099

+
0.092

planets per GK dwarf star. After correcting for reliability against astrophysical false positives and false alarms, we find

F

0

=

0.421

−
0.072

+
0.086

. Our findings agree within 1σ of Bryson et al. (2020), indicating that the results are robust and not method-dependent.
A Variable X-Ray Source Close to the Magnetar SGR 1935+2154
Authors: Kong A. K. H. , Li K. L. , Kim Sangin , Hui C. Y.
Published: June 2020

The recent discovery of a millisecond radio burst from the Galactic magnetar SGR 1935+2154 has initiated an intense discussion about the connection between magnetars and fast radio bursts (FRBs). Although some properties of the radio burst from SGR 1935+2154are not the same as cosmological FRBs, there are theoretical models which propose a connection between magnetars and FRBs (see review by Margalit et al. 2020). In particular, the role of a magnetar wind nebula is included in some models, and therefore it is worthwhile to investigate the X-ray environment of SGR 1935+2154 in more detail. Here, we report on the discovery of an X-ray transient feature near SGR 1935+2154 using archival Chandra data and discuss its possible origin.
A public awareness study about antibiotic consumption habits and antibacterial resistance in north-eastern region of Cyprus
Authors: Ilktac Mehmet , Tarabishi Mohammed Tamim , Ozbirtan Pembe , Gulcan Canan , Celik Gulden
Published: June 2020

Introduction: Antibiotic resistance is a current global issue. Investigation of the level of knowledge of the public about antibiotics and antibiotic resistance is necessary to combat the antibiotic resistance problem. The aim of the present study was to evaluate the level of knowledge of the citizens of the north-eastern part of Cyprus on antibiotics and antibiotic resistance problem.

Methodology: Randomly selected 701 adults were included in the study. A modified version of World Health Organization’s public awareness survey was used to assess the knowledge on antibiotics and the resistance. Logistic regression was used to find out the relationship between knowledge and education level. Spearman’s correlation analysis was carried out to determine the association between the education level and the awareness of antibiotic resistance.

Results: Overall, 47.9% (336/701) of the respondents had used antibiotics in the last 6 months. Approximately 70% of respondents were determined to have intermediate/high knowledge on antibiotic consumption. In total, 66% of the population heard about antibiotic resistance and of these, 64% had intermediate knowledge on the resistance concept. University graduates were more likely to hear the term antibiotic resistance than primary school graduates.

Conclusions: In the north-eastern region of Cyprus, the public is moderately knowledgeable about antibiotics and resistance. The study is the first large scale study in the northern part of Cyprus and is thought to improve the national health policies related with antibiotic consumption in Cyprus and other developing countries.
Nested multiplex PCR for detection of bacterial and fungal blood stream infections in patients with hematological malignancies
Authors: Hassanin Nesma Abdel Aziz Hamdi , Abdallah Nermeen Mahmoud Ahmed , Abdalla Nour Elhoda  Hussein , Kholeif Laila , Shabban Marwa
Published: June 2020

Introduction: Bloodstream Infections (BSIs) are a main cause of life-threatening complications among patients with cancer.

Methodology: This study aimed to identify microbial pathogens causing BSI in febrile neutropenic patients with hematologic malignancy and compare the results of conventional blood culture with a nested multiplex real time PCR assay done directly on whole blood samples. The nested multiplex PCR was based on 16S rDNA and 18S rDNA sequence-specific primers; hence, it allowed the identification of most species of bacteria and fungi.

Results: Forty adult patients with febrile neutropenia, admitted at Hematology ward of Ain Shams University Hospitals, were included in this study. Each patient was subjected to conventional blood culture and nested multiplex PCR. Blood culture was positive in 19 patients (47.5%). About 68.4% of the positive cultures were monomicrobial, while 31.6% were polymicrobial. A total number of 26 isolates were grown from positive cultures; Staphylococcus aureus was the most common (30.8%), followed by Klebsiella pneumoniae (19.2%). Regarding nested PCR, positive results were detected in 37/40 patients (92.5%) which was statistically significantly higher than that of blood culture. Eighteen samples that tested negative by culture were positive using the molecular approach. The agreement between the two approaches was 55%.

Conclusion: nested multiplex real time PCR can be a promising tool in order to achieve rapid diagnosis in cancer patients clinically suspected of BSIs. Its utilization could affect the choice of antimicrobial treatment whether bacterial or fungal and, therefore avoid unnecessary use of antimicrobials.
Different outcome of COVID-19 in members of a family
Authors: Sun Jin , Jiang Yan , Lin Wei , Hu Wei-Hua , Wang Yong
Published: June 2020

We report a family cluster of cases of coronavirus disease 2019 (COVID-19), in which three members of the family were exposed to SARS-CoV-2 at the same time, but the disease manifested differently among the three family members. We describe the clinical manifestations, disease progression, and treatment of wife and husband. We also analyze the daughter who was in close contact with patients with COVID-19 but was not infected.
COVID-19, frailty and long-term care: Implications for policy and practice
Authors: Andrew Melissa , Searle Samuel D , McElhaney Janet E , McNeil Shelly A , Clarke Barry , Rockwood Kenneth , Kelvin David J
Published: June 2020

Older adults have been disproportionately affected by the COVID-19 pandemic, with many outbreaks occurring in Long Term Care Facilities (LTCFs). We discuss this vulnerability among LTCF residents using an ecological framework, on levels spanning from the individual to families and caregivers, institutions, health services and systems, communities, and contextual government policies. Challenges abound for fully understanding the burden of COVID-19 in LTCF, including differences in nomenclature, data collection systems, cultural differences, varied social welfare models, and (often) under-resourcing of the LTC sector. Registration of cases and deaths may be limited by testing capacity and policy, record-keeping and reporting procedures. Hospitalization and death rates may be inaccurate depending on atypical presentations and whether or not residents’ goals of care include escalation of care and transfer to hospital. Given the important contribution of frailty, use of the Clinical Frailty Scale (CFS) is discussed as a readily implementable measure, as are lessons learned from the study of frailty in relation to influenza. Biomarkers hold emerging promise in helping to predict disease severity and address the puzzle of why some frail LTCF residents are resilient to COVID-19, either remaining test-negative despite exposure or having asymptomatic infection, while others experience the full range of illness severity including critical illness and death. Strong and coordinated surveillance and research focused on LTCFs and their frail residents is required. These efforts should include widespread assessment of frailty using feasible and readily implementable tools such as the CFS, and rigorous reporting of morbidity and mortality in LTCFs.
Aflatoxins Contamination of Human Food Commodities Collected from Jeddah Markets, Saudi Arabia
Authors: El Tawila Mahmoud , Sadeq Serdar , Awad Alrasheedi Amani , Serdar Jamil , Madkour Mohamed Hussein Fahmy , Deabes Mohamed M.
Published: June 2020

BACKGROUND: Aflatoxins (AFs) are fungal secondary metabolites produced by Aspergillus flavus. They contaminate of dietary food with AFs is a worldwide problem that affects both food safety and agricultural economies.
AIM: The aim of this study was designed to investigate the AFs contents of human food commodities mostly consumed in Jeddah, Saudi Arabia.
METHODS: The study was designed in vitro, contents in six food categories. A total of 288 samples were collected from 78 different markets in Jeddah. AFs were determined by high-performance liquid chromatography with fluorescence detector using immunoaffinity column clean-up.
RESULTS: The results indicated that the incidence rate 27.3% of nut samples collected from Jeddah, were contaminated with AFB1, AFB2. The concentrations of AFs (AFB1, AFB2, AFG1, and AFG2) were ranged from 0.19–482.4, 0.09–3.34, 0.19–87.1, to 0.09–579 μg/kg in the nut samples.
CONCLUSION: The results demonstrate the importance of routine monitoring of AFs contamination in various dry foods for human consumed should be performed regularly and the nuts contained high levels of AFs. The legal regulations must be unauthorized for human consumption to control the health risks associated with AFs.
A revised taxonomy of Asian snail-eating snakes Pareas (Squamata, Pareidae): evidence from morphological comparison and molecular phylogeny
Authors: Wang Ping , Che Jing , Liu Qin , Li Ke , Jin Jie Qiong , Jiang Ke , Shi Lei , Guo Peng
Published: June 2020

The Asian snail-eating snakesPareasis the largest genus of the family Pareidae (formerly Pareatidae), and widely distributed in Southeast Asia. However, potential diversity remains poorly explored due to their highly conserved morphology and incomplete samples. Here, on basis of more extensive sampling, interspecific phylogenetic relationships of the genusPareaswere reconstructed using two mitochondrial fragments (cyt b and ND4) and two nuclear genes (c-mos and Rag1), and multivariate morphometrics conducted for external morphological data. Both Bayesian Inference and Maximum Likelihood analyses consistently showed that the genusPareaswas comprised of two distinct, monophyletic lineages with moderate to low support values. Based on evidences from molecular phylogeny and morphological data, cryptic diversity of this genus was uncovered and two new species were described. In additional, the validity ofP. maculariusis confirmed.
Dévots de l’identité et authentique en toc
Authors: Prokhoris Sabine
Published: June 2020

L’époque est saisie d’une folie identitaire tous azimuts, qui envahit et contamine, en la faussant, toute réflexion sur les questions touchant à la sexualité, aux femmes, au « féminin ». Cela dans un déni revendiqué de l’inconscient, cet empêcheur de s’identifier en rond. À partir de la lecture de l’essai de Laurent Dubreuil La dictature des identités , on proposera une réflexion sur les impasses auxquelles conduit cette idéologie victimaire.
À la recherche de la jouissance féminine
Authors: Kamieniak Jean-Pierre
Published: June 2020

La question de la jouissance féminine s’est d’abord posée intimement à Marie Bonaparte en termes de lieu anatomique : une conception dont son mentor, Gustave Le Bon, est l’un des représentants, avant que la princesse, avec Freud, ne fasse la découverte de l’existence d’une psycho sexualité en mesure de rendre compte des aléas du plaisir par les avatars du développement libidinal. C’est cette histoire personnelle, enchâssée dans l’histoire du savoir sur la sexualité, qui se trouve restituée ici.
L’étrange cas d’Emmy von N.
Authors: Lussier Alexis
Published: June 2020

À propos du cas d’Emmy von N., en tête des Études sur l’hystérie , Freud raconte comment il eut l’idée de raconter à sa patiente la légende de l’archevêque Hatto, qu’elle écoute « avec la pire des terreurs ». On peut sans doute mettre cette intervention sur le compte des maladresses que Freud s’attribue lui-même, mais on peut aussi mettre en valeur la fonction analytique de ce récit, en cherchant à comprendre dans quelle mesure l’ histoire faite à Emmy était peut-être destinée à tomber juste.
La haine de la psychanalyse
Authors: Fos-Falque Sabine
Published: June 2020

Sur le plan de l’imagination, Anaïs Nin disait qu’elle régnait en maître, sur le plan de l’expérience, qu’elle avait peur. Peur que son souffle ne se réduise en sanglots. La perversion (quand la poussée pulsionnelle ne trouve pas de bord) comme moindre mal. Avec ces âmes crevassées, ou plutôt animales, personne ne sait comment s’y prendre. On est aimanté ou écœuré. Ou, roman ou réalité, happé et complice de toutes ces dépravations d’appétit . Et puis, aussi, interrogé quant à la fonction de l’écriture, salvatrice ou dévastatrice. Loin de toute tentative diagnostique, cette lecture de psychanalyste se veut être plutôt une variation à partir d’Anaïs Nin , certes au plus près de ses mots à elle mais interprétative – à l’aune de l’hypothèse de sa haine à l’égard de la psychanalyse.
De la sexualité féminine au féminin
Authors: Allouch Éliane
Published: June 2020

À partir de la mise en perspective, de Freud à nos jours, des principaux congrès sur la sexualité féminine et de certaines recherches post-1968 sur ce thème, l’auteur présente les différentes notions étudiées, qui ont précédé et introduit celle du féminin. L’enjeu de cet article vise à bien différencier la sexualité féminine du féminin, lequel vient expliciter quelque peu l’énigme du « continent noir » freudien.
La sagesse de Marcel Hénaff
Authors: Chalier Jonathan
Published: June 2020

Inspirée de l’art musical de Lévi-Strauss et de l’éthique de la traduction de Paul Ricœur, la sagesse de Marcel Hénaff part de l’anthropologie du don cérémonial pour développer une politique de la reconnaissance réciproque. Dans les sociétés modernes, cette dernière est assurée par la loi, mais elle est menacée par l’hégémonie de l’économie marchande.
Silence de l’image, violence du regard
Authors: Marty Éric
Published: June 2020

La singularité de Georges Didi-Huberman tient dans la tentative de sauver l’image et le discours de l’image de l’inconsistance. Elle oscille entre le « quand même » de l’image religieuse et le « malgré tout » de l’image de camps d’extermination, entre l’acte et le spectacle.
Irriguer le cours des lettres
Authors: Viard Bruno
Published: June 2020

Dans l’histoire des études littéraires, le structuralisme a désavoué la tradition républicaine de Gustave Lanson et Pierre Leroux, pourtant marquée par une attention louable à l’historicité et de à psychologie. On peut le vérifier sur la question de l’amour-propre.
Ce que l’hindouisme recouvre
Authors: Dwivedi Divya , Mohan Shaj , Todaro Benedetta , Delrez Angel
Published: June 2020

L’image de l’Inde indépendante associée à l’autorité de Gandhi cache l’oppression millénaire des castes inférieures, assurée au XX e siècle par l’invention de l’hindouisme.
Au risque de la folie : penser le soin en Unité pour malades difficiles. Apport des outils projectifs
Authors: Béraud Paul , Ravit Magali
Published: June 2020

Le travail clinique en psychiatrie (plus précisément en Unité pour Malades Difficiles) avec des patients psychotiques réputés dangereux mobilise des défenses qui, au sein de la dynamique thérapeutique, favorise bien souvent des stratégies de soins en appui sur des logiques de contrôle ou sur des outils d’anticipation du risque. Au regard de ces pathologies confrontant à toutes les formes les plus énigmatiques de la pensée et de l’être, le travail clinique – dans son ambition salvatrice – peut être désavoué puisque tout rapport à la pensée converse avec l’intolérable. Dans ce contexte, les outils projectifs, qui à la fois rendent possible l’évaluation clinique tout en préservant la rencontre et son approche subjectivante, fonctionnent comme des embrayeurs du soin. La démarche projective entre ainsi au service d’un apprivoisement de la pensée quand celle-ci se présente comme une menace. C’est à partir de la rencontre clinique d’un patient ayant tué sa mère par strangulation, en appui sur la passation du Rorschach (en test et re-test), que nous envisagerons comment ces outils contribuent à identifier, nommer et mettre au travail ce qui relève des processus de pensée.
Filiations à venir…
Authors: Marchal Jean-Luc
Published: June 2020

Quels seraient les éléments indispensables et fondamentaux qui devraient sans relâche être mis en œuvre et travaillés afin de mener à bien, ou tout du moins le mieux possible, ce que nous pensons essentiel et au cœur de toute formation pour futurs travailleurs sociaux ? Dans la veine d’un travail de recherche mené autour de la question de la transmission « au sujet » et de la transformation « du sujet » dans le processus de formation, C’est la question qui a d’une certaine façon conclu cet écrit.
Trouble ou symptôme
Authors: Allio Deborah
Published: June 2020

La psychiatrie publique est actuellement démantelée. Le discours de la science privilégie les thérapies cognitivo-comportementales qui traquent le trouble. Pourtant, l’homme ne peut être réduit à une machine reconditionnable. La clinique lacanienne montre bien l’utilité et la fonction du symptôme pour le sujet, comme en témoigne la vignette clinique proposée.
Ambiance survoltée
Authors: Corlay Teddy
Published: June 2020

En esat , c’est le travail collectif qui rend les institutions vivantes. À partir d’un témoignage en tant que moniteur d’atelier, l’accompagnement social (tel que la résolution de conflit) peut parfois prendre le dessus sur l’accompagnement technique ; créer la surprise par un « coup de bluff » peut permettre d’améliorer, voire de régler la situation particulière.
Revestimiento de mortero termocrómico en fachada: impacto en la eficiencia energética del edificio
Authors: Gavira M. J. , Pérez G. , Acha C. , Guerrero A.
Published: June 2020

Los materiales termocrómicos, con propiedades ópticas variables con la temperatura, optimizan el aprovechamiento de la energía solar por la envolvente del edificio para mejorar su eficiencia energética. El objeto de este estudio es determinar el impacto de un revestimiento de mortero termocrómico (MT) en fachada sobre la eficiencia energética del edificio en un clima mediterráneo. Se propone una metodología de cálculo para implementar las propiedades ópticas variables del mortero en la simulación energética. Se estudia un revestimiento de MT con absortancia solar entre 0,65 y 0,60, y una temperatura de transición entre 20ºC y 35ºC. El mortero muestra color gris oscuro para temperaturas bajas y color claro para temperaturas altas. El edificio presenta una demanda energética anual un 3 % inferior que con revestimiento de propiedades ópticas no variables. La reducción de demanda de calefacción puede llegar a un 8%.
Aux origines de Toulouse
Authors: Vaginay Michel
Published: June 2020

On lit encore parfois que la naissance de Toulouse se confond avec la fondation de la civitas romaine sous Auguste. C’est pourtant faire fi des textes antiques et des nombreuses données archéologiques concernant l’âge du Fer. Les uns et les autres concourent en réalité à donner l’image d’une cité gauloise florissante occupant une place majeure en Gaule dès le IIe s. av. n. è. Paradoxalement, les chercheurs discutent encore la localisation et l’organisation de cette agglomération. Une relecture prudente des textes relatifs à la période considérée, confrontée à l’examen attentif des données archéologiques, conduit à proposer de considérer Tolosa gauloise comme une agglomération multipolaire.
A Novel Full Stressed Energy Harvester with Varied Thickness
Authors: Zhu Guang Hong , Liu Yan Bin
Published: June 2020

This study developed a novel full stressed energy harvester composed of a cantilever with varied thickness in the length direction to harvest energy from ambient vibrations. This harvester owns a higher efficiency of energy harvesting when compared with the harvester of a uniform cross section, since the maximum bending stress is constant in each cross section. The current available models for cantilever harvesters are inapplicable to the new improved fully stressed harvester due to its unique shape. By employing Rayleigh-Ritz method, a corresponding governing equation is hence developed to model the full stressed harvester for estimating the efficiency. The influence of the geometry on the generated electric power is also discussed for the full stressed harvester. The results show that the full stressed harvester can double the electric power generated by the uniform harvester, and the full stressed harvester has a lower natural frequency.
Effects of the Usage of Wasted Diatomite and Phase Change Materials as Partial Replacement of Cement on the Mechanical Properties of Concrete
Authors: Shih Yeng Fong , Hou Wei Cheng , Kotharangannagari Venkata Krishna , Lee Ming Gin
Published: June 2020

In this study, the wasted diatomite was added to the cement mortar after heat treatment, and the potential of replacing the silica fume to prepare high-strength concrete was discussed. In addition, the diatomite was used to adsorb the polyethylene glycol (PEG) to prepare a shape-stabilized phase change material (SSPCM). Moreover, the compressive strength of concrete and its performance as a temperature-regulating building material by the addition of SSPCM were investigated. The results show that the average compressive strength of the diatomite-containing test mortar after adding a water reducing agent reaches 505.27 kg/cm2, which meets the requirements of the compressive strength of the high-strength concrete. The thermal analysis results show that the diatomite successfully adsorbs PEG and the average compressive strength of SSPCM-containing test mortar reaches 235.42 kg/cm2, which meets the basic requirements of the compressive strength of concrete. The illuminating test shows that the internal temperature of the pristine cement test mortar is mostly higher than the surface temperature. However, the test mortar prepared by adding the SSPCM has a maximum reduction of internal temperature of 2.24 °C as compared with the surface temperature. It is shown that the diatomite which adsorbed phase change material can achieve the functions of lowering the internal temperature and adjusting the temperature of building materials.
Ultra-Bright 2D Assembled Copper Nanoclusters: Fluorescence Mechanism Exploration and LED Application
Authors: Ai Lin , Tang Min , Li Ji , Chen Hsiao Hsien , Meng Hong
Published: June 2020

Novel fluorescent nanomaterials have attracted enormous interests in the applications of illumination and display besides the traditional organic fluorophors. As potential alternatives, the environmental friendly fluorescent ultra-small organic-inorganic hybrid metal nanoclusters (size < 2 nm) is a series of powerful competitors used in illuminating field, on account of the non-poisonous, large amount of storage in earth, simple synthetic route, and relative low cost. The most important one, facile regulation of the fluorescence intensity and emission colors makes metal nanoclusters more attractive candidates for illumination application. Here, through ingeniously designing the structures of capping ligands, the highly bright copper nanoclusters are obtained, which further assemble into 2D ribbons with fluorescence quantum efficiency ascending to 36.4%. Last, the light emitting diodes with excellent performance are constructed, the emission wavelength locates at 650 nm in red region, which is suitable for plant illumination.
Study on Preparation and Application of Protein Filler by Chitosan Modified Keratin
Authors: Yao Qing Da , Wang Lu , Liang Yong Xian , Wen Hui Tao , Niu Ze , Chen Jun , Dan Wei Hua
Published: June 2020

In order to make rational use of waste cattle hair, the protein filler was prepared by using chitosan modified keratin which hydrolyzed waste cattle hair, then used in retanning and filling process. The optimal modification conditions of keratin: chitosan: keratin was 20:80, pH value was 2, time was 5h, chitosan modified keratin product zeta potential was 31.3mV, nanometer particle size was 482d·nm. Chitosan-modified keratin can be used as chrome auxiliaries in the retanning process to significantly reduce total chromium in the waste liquid. At the same time, the modified keratin had good filling performance. Moreover, the softness, tearing force and tensile strength of the shoe upper leather which filled with chitosan modified keratin were improved.
Resistance-Temperature Characteristics of Cr Doped Ni0.7Mn2-xCu0.3CrxO4 NTC Thermistors
Authors: Zhang Le Jun , Li Ting Ting
Published: June 2020

Manganese-based solid solution ceramics of transition metal with spinel-type crystal structure have generated much interest as NTC thermistors in various domestic and industrial applications. Doping has been considered as one of the most important method to improve their electrical properties. In this work, Cr doped Mn-based solid solution NTC ceramics Ni0.7Mn2-xCu0.3CrxO4 (x = 0.1, 0.2, 0.3 and 0.4) were prepared by solid-state reaction method. X-ray diffraction (XRD), scanning electron microscope (SEM) and X-ray energy dispersive spectrometer (EDS) were applied to study the phase structure, surface morphology and surface element content. The results indicate that the resistance and B value increase as the substituted Cr content increases.
Effect of Process Parameters on Surface Roughness in Surface Grinding of 90CrSi Tool Steel
Authors: Hong Tran Thi , Cuong Nguyen Van , Ky Le Hong , Tung Luu Anh , Nguyen Thanh Tu , Vu Ngoc Pi
Published: June 2020

This paper aims to investigate the effect of process parameters on the surface roughness in suface grinding 90CrSi tool steel. In this paper, many process parameters including the coolant concentration, the coolant flow, the cross feed, the table speed and the depth of cut were taken into account. Based on conducting and analysing 25 experiments which were created by using full factorial design, the influence of the process parameters on the surface roughness was evaluated. Also, a predicted model to calculate the surface roughness was proposed.
Improvement of Binderless Banana Pseudo-Stem Particleboard Properties via Natural Laminating Materials
Authors: Jamaludin Mohd Ariff , Bahari Shahril Anuar , Zakaria Mohd Nazarudin , Azizan Ummu Amirah
Published: June 2020

In this study, the first objective was to investigate the basic mechanical and physical properties of the binderless banana pseudo-stem particleboard (BBP) at a targeted density of 650 kg/m3. The second objective was to examine the effect of laminates on the properties of BBP. Three types of BBP were produced, that were oil palm veneer laminated BBP, layered banana leaf laminated BBP, and BBP without lamination. No adhesive was used in the production of the BBP, but for lamination process, cold setting polyvinyl acetate (PVAc) was used. Three tests were conducted which were internal bonding (IB), static bending, and water absorption resistance tests. According to the results, BBP without lamination had the lowest IB. The lowest modulus of rupture (MOR) and lowest modulus of elasticity (MOE) in static bending was also recorded by BBP without lamination. The highest IB, MOR and MOE, were of BBP laminated with oil palm veneer. These values were followed by IB, MOR and MOE of BBP with banana leaf lamination. Highest percentage water absorption (WA) was exhibited by BBP without lamination, followed by BBP laminated with oil palm veneer, and then by BBP laminated with layered banana leaves. The types of BBP significantly influence the MOR and MOE, but did not significantly affect the IB and WA. In general, laminating the BBP using natural layered materials has significantly improved the MOR and MOE.
Degradation Behaviour of Nanosilica Enhanced Oil Palm Empty Fruit Bunch Fiber Epoxy Composites
Authors: An Anslem Wong Tsu , Debnath Sujan , Chen Vincent Lee Chieng , Reddy Moola Mohan , Pramanik Alokesh
Published: June 2020

In recent years, studies regarding natural fiber reinforced composites have been increased as they are biodegradable with good mechanical performance therefore can help to overcome the environmental issue. As the natural fibers are easy to obtain, many industries have started to make use of natural fiber composites which are light in weight and possess good mechanical properties. However, the natural fiber composites also possess certain limitations most importantly their high moisture absorption ability which makes them incompatible at degradable environment. The fiber constituents of natural fiber composite may have different type of interactions at different environmental conditions. In addition, the involvement of nanoparticles in the composite may be the solution to overcome the deficiencies. In this research, the degradation behaviour of Oil palm empty fruit bunch (OPEFB) fibers reinforced epoxy composites upon exposure to degradable environmental conditions and the effect of adding nanoparticles have been studied. The tensile tests were conducted before and after the exposure to different environmental conditions including plain water, moist soil, brine solution, and cooking oil. Results shows that the addition of 10wt% of OPEFB fiber to the epoxy composites had improved the mechanical tensile strength up to 15.97% and composites exposed to brine solution have the most prominent sign of degradation in mechanical properties in both composites with and without nanosilica. Nevertheless, the composites with nanosilica have shown up to 24.28% improvement in tensile strength after exposure to different environmental conditions. The improvement were attributed due to filling the voids of the composites with nanosilica and good interfacial adhesion between the nanofiller, fiber, and matrix.
Ceramic Membrane Production from the Mixture Composition of Clay, Zeolite, Activated Carbon with Micro Particle Size
Authors: Saifuddin Saifuddin , Faridah F. , Elwina E. , Zaz Iva An
Published: June 2020

The study has been done in membrane production from the ratio of clay, zeolite and activated carbon. The goal of this study is to make membrane from clay, zeolite and activated carbon with micro particle size using Planetary Ball Milling Fritsch Pulverisette. The comparison of clay, zeolite and activated carbon is 80% : 10% : 10%, 70% : 20% : 10%, 60% : 30% : 10%, 50% : 40% : 10% with temperature combustion 600 °C, 700 °C dan 800 °C. Activated zeolite done with using HCl 2 M and then heated at 150 °C for 3 hours. Size particle from zeolite is 140 mesh with using Planetary Ball Milling Fritsch Pulverisette to reduce size of zeolite become 140 mesh with a rotation speed of 350 rpm for 6 hours. The result of this study shows that the highest flukes membrane found in clay, zeolit and activated membrane at 50%: 40%: 10% with temperature combustion at 800 °C around 4,859 L/jam.m2. The compressive strength on clay: zeolite: activated carbon ( 80%: 10%: 10%) with temperature burning at 600 °C around 39,6977 kg/cm2. Characterization testing using Scanning Electron Microscopy (SEM) on ceramic membranes with clay composition: zeolite: activated carbon = 50%: 40%: 10% at a combustion temperature of 600 °C obtained by membrane pore size of 2,699 μm. Adsorption with the optimum time obtained at 1 hour with a concentration of 0,2333 ppm. The highest effect of membrane composition on cation exchange capacity (CEC) is in the composition of 50%: 40%: 10% with a combustion temperature of 600 °C which is equal to 1.1 mgrek/g..
Eco-Friendly Thermal Insulation Structures Based on Natural and Biodegradable Materials for Environmentally Durable Development
Authors: Ene Alexandra Gabriela , Mihai Carmen
Published: June 2020

Worldwide, natural fiber insulation is in high demand, offering not only thermal comfort but also soundproofing. Another important aspect for which these biodegradable materials is popular is that it presents no health risk. Due the soft texture, natural fibers can be introduced very simply in any type of construction. Regardless of the vertical or inclined mounting, the stapling or gluing of the material gives stability. For example, the wool insulation is made from natural fibers, washed and treated. These wool fibers are held together either mechanically or using up to 12% polyester fibers to form semi-rigid tiles/mattresses or rollers. With a higher price than mineral wool, natural insulation is ideal for eco-friendly wooden houses. Depending on the type of construction, the wool can be mounted in a single layer or several layers, of different thicknesses [1]. For the evaluation of the thermal efficiency of the wool panel’s insulation four variants of insulating panels based on 100% wool were accomplished. Using a specialized simulation program, it is found that the heat losses through the walls themselves represent 86% of the total heat loss and the heat losses through the windows/doors to the outside represent 14% of the total heat losses.
The MicroRNA miR-22 Represses Th17 Cell Pathogenicity by Targeting PTEN-Regulated Pathways
Authors: Wang Li , Qiu Rong , Zhang Zhaoyang , Han Zhijun , Yao Chao , Hou Guojun , Dai Dai , Jin Wenfei , Tang Yuanjia , Yu Xiang , Shen Nan
Published: June 2020

Multiple sclerosis is a chronic autoimmune disease driven by pathogenic Th17 cells. In this study, we dissected the role of miR-22 in pathogenic Th17 cells by autoantigen-specific disease models. We first showed that miR-22 was upregulated in peripheral lymphoid organs and spinal cords of mice developed autoimmune encephalomyelitis. Although miR-22 was upregulated in multiple Th cell subsets, it was dispensable for Th cell differentiation in vitro. Whereas miR-22−/− mice exhibited milder symptoms of disease in an active experimental autoimmune encephalomyelitis model, adoptive transfer of miR-22−/− 2D2 Th17 cells into naive recipient mice promoted higher disease incidence and severity compared with mice transferred with control 2D2 Th17 cells. Global transcriptional analysis of miR-22–deficient pathogenic Th17 cells revealed upregulated genes in phosphatase and tensin homologue (PTEN)–mediated pathways, and Pten was further identified as one of its potential targets. Therefore, we identified that Th17 cell–intrinsic miR-22 could protect mice from autoimmunity by targeting PTEN-regulated pathways.
Aggiornamenti in tema di malattia cerebrovascolare: prevenzione, terapia e riabilitazione
Authors: Bandini Guest Editors: F. , Fontanella A. , Manfellotto D.
Published: June 2020

IntroduzioneF. Bandini, P. Gnerre

Epidemiologia e classificazioneM. Stornello, E. Sanzaro

I fattori di rischioT.M. Attardo

Prevenzione primariaS. Spolveri

Cause rare di strokeM. Zedde

L’attacco ischemico transitorioM. Guarino, S. Belluoccio

Ictus ischemico: assistenza in fase acutaF. Di Blasio

Trombolisi endovenosaP. Candelaresi, V. Andreone

Trombectomia meccanicaP. Candelaresi, G. Leone, V. Andreone, M. Muto, M. Muto

Modelli organizzativi nella gestione dell’ictus ischemicoR. Iannacchero, A. Siniscalchi, D. Bosco

Emorragia cerebrale intraparenchimale spontaneaM. Masato, A. Bruscagnin

Emorragia subaracnoideaL.A.A. Lanterna, M. Pantusa, A. Montalbetti, L. Savarese, P. Gritti, M.L. Colleoni

Ictus a possibile doppia genesi. Cardioembolica o aterotrombotica?S. Ascione, P. Ripa, G. Grimaldi

Ictus criptogenetico: la ricerca della fibrillazione atriale e del forame ovale pervio. Come e quandoM. Botta

Le complicanze in fase acutaC. Di Carmine, G. Francolini, S. Bedetta, L. Mucci, G. Frausini

Prevenzione secondaria dell’ictus ischemicoL. Gentile

La riabilitazione dell’ictusP. Milia, G. Regesta

La riabilitazione post-ictusA. Greco, F.R. Greco

Trombosi venosa cerebraleA. Iannuzzi

Gestione della disfagia e prevenzione delle complicanzeR. Rapetti, F. Bertoncini, L. Vestito
Functional and biochemical changes in the thyroid gland following exposure to therapeutic doses of external beam radiotherapy in the head-and-neck cancer patients
Authors: Randhawa Amritjot Singh , Yadav Hanuman Prasad , Banipal Raja Paramjeet Singh , Goyal Gitanjali , Garg Pardeep , Marcus Sapna
Published: June 2020

Context:

Majority of the head-and-neck cancers are locoregionally advanced at the time of diagnosis. Hence, radiotherapy (RT) portals will invariably cover the whole neck and thus, the thyroid gland which may lead to its dysfunction.

Aims:

The purpose of this study is to identify the functional and biochemical changes in the thyroid gland following RT to the neck using single-photon emission computed tomography-computed tomography (SPECT-CT) and thyroid function tests (TFTs).

Subjects and Methods:

In this prospective study, 45 patients of the head-and-neck cancer, receiving RT with or without chemotherapy were investigated. Baseline TFTs and thyroid scans (on SPECT-CT) were done, and the same were repeated at the completion of RT, at 3 and 6 months.

Results:

All patients received a minimum of 30 Gy to the whole neck. Baseline TFTs and thyroid scans were normal. None of them developed hypothyroidism clinical or subclinical (C/S) at the completion of RT. Six patients developed hypothyroidism (four subclinical, two clinical) at 3 months of the completion of treatment. At 6 months of follow-up 14 patients (31.1%) developed hypothyroidism (ten subclinical, four clinical) with P≤ 0.01. All patients having clinical or subclinical hypothyroidism had decreased uptake on thyroid scan. Patients having decreased uptake on thyroid scan only, with normal TFTs and no symptoms of hypothyroidism were zero at the completion of RT, 1 at 3 months follow-up, and seven at 6 months follow-up.

Conclusions:

Hypothyroidism (C/S) is an under-recognized but significant complication of therapeutic doses of RT to the neck. In our study, we recognized hypothyroidism as early as 3 months following the completion of RT. Hence, tests to evaluate functional and biochemical changes in the thyroid gland should be instituted as early as 3 months following RT.
Pricing and profiting in copyright: introducing an Islamic perspective
Authors: Adam Ainee
Published: June 2020

The economic rights granted to copyright holders are, at times, an obstacle to the public's right of access to knowledge as the works are priced beyond the means of their consumers. Recognizing this, the three-step test in Article 13 of the Trade-Related Aspects of Intellectual Property Rights Agreement provides exceptions and limitations to the copyright holders’ economic rights. It is, however, arguable that the test is inadequate in balancing the rights and interests of the copyright holders and the public.

It is observed that most of the available literature on this issue is based on Western principles and thought. This article, therefore, proposes that scholarship from an alternative set of knowledge could potentially shed some light on the matter. In particular, it suggests that an Islamic perspective on pricing and profiting could provide a more appropriate balance that would grant equitable access to knowledge, research and education to the general public, while ensuring that copyright holders (and authors) remain incentivized to produce high-quality literary work. In so doing, the article introduces one of the first steps in applying Islamic economic principles to contemporary copyright issues.
Are foreign copyright works protected in Nigeria?
Authors: Sodipo Bankole
Published: June 2020

Despite Nigeria's treaty obligations, Nigerian courts have, in the last quarter of a century, consistently but erroneously held that the Nigerian copyright statute does not protect copyright works of foreign persons. The purport of the decisions is that foreign persons cannot sue to protect their copyright in Nigeria. Given that the decisions of three trial courts and a Court of Appeal decision were never appealed to the Supreme Court, they arguably remain good precedent. The decisions suggest that foreign direct investors who need copyright protection are exposed in Nigeria. Relying on two of these cases, a leading intellectual property law text echoed this erroneous position.

This article demonstrates that the decisions were reached in ignorance of applicable statute. As such, the decisions should not be followed by trial courts irrespective of the rule of binding judicial precedent. The article outlines various mechanisms within the copyright statute that extend the protection of the Nigerian copyright statute to foreign works. This article goes further than previous works. Unlike earlier works, this article suggests the path trial courts should tread, despite the rule of precedent, in distinguishing this line of cases to hold that foreign corporations incorporated in many treaty countries and foreign works emanating from many treaty countries are protected in Nigeria. Unlike earlier works, this article demonstrates that lower courts may refer this issue to higher courts for interpretation and guidance under the case stated procedure. Whilst other works made passing references to the Copyright (Reciprocal Extension) Order 1972 (the 1972 Order), that arguably extends copyright to foreign works under the Copyright Act 1970, none cited judicial authority that held that the 1972 Order made under the repealed Copyright Act 1970 is still valid under the current Copyright Act. None referred to the Interpretation Act that supports this judicial authority. Unlike previous work, this article reveals that if the Microsoft case that is the most significant of these cases is appealed to the Nigerian Supreme Court, the court will extend the time within which the Microsoft Corporation can appeal and reverse Microsoft and the line of cases identified in this article.