bluuebunny/crossref_metadata_2025 huggingface dataset:
Magnetic properties of hematite (α − Fe2O3) nanoparticles synthesized by sol-gel synthesis method: The influence of particle size and particle size distribution
Authors: Tadic Marin , Panjan Matjaz , Tadic Biljana Vucetic , Lazovic Jelena , Damnjanovic Vesna , Kopani Martin , Kopanja Lazar
Published: October 2019

Using the sol-gel method we synthesized hematite (α − Fe2O3) nanoparticles in a silica matrix with 60 wt % of hematite. X-ray diffraction (XRD) patterns and Fourier transform infrared (FTIR) spectra of the sample demonstrate the formation of the α − Fe2O3 phase and amorphous silica. A transmission electron microscopy (TEM) measurements show that the sample consists of two particle size distributions of the hematite nanoparticles with average sizes around 10 nm and 20 nm, respectively. Magnetic properties of hematite nanoparticles were measured using a superconducting quantum interference device (SQUID). Investigation of the magnetic properties of hematite nanoparticles showed a divergence between field-cooled (FC) and zero-field-cooled (ZFC) magnetization curves and two maxima. The ZFC magnetization curves displayed a maximum at around T
B = 50 K (blocking temperature) and at T
M = 83 K (the Morin transition). The hysteresis loop measured at 5 K was symmetric around the origin, with the values of coercivity, remanent and mass saturation magnetization H
C10K ≈ 646 A/cm, (810 Oe), M
r10K = 1.34 emu/g and M
S10K = 6.1 emu/g respectively. The absence of both coercivity (HC300K = 0) and remanent magnetization (Mr300K = 0) in M(H) curve at 300 K reveals super-paramagnetic behavior, which is desirable for application in biomedicine. The bimodal particle size distributions were used to describe observed magnetic properties of hematite nanoparticles. The size distribution directly influences the magnetic properties of the sample.
NMR study of Au/Al nanosytems in solution
Authors: Kislyuk Victor , Melnyk Andrii , Buryak Nikolay , Trachevskij Volodymyr
Published: October 2019

Nuclear magnetic resonance spectroscopy (NMR) 1H, 35Cl, 27Al and 13C was applied to study underlying processes at the various stages of the synthesis of Au/Al nanoparticles. 35Cl spectrum was downfield shifted by 2.6 ppm as to the reference signal of the hydrated Cl− ion in NaCl solution. The evolution of the NMR spectra points to the formation of the stabilized shell around the gold containing nucleus. The shell restricts the supply of the reducing agents, which is the condition for the formation of Au2+ state at the concentration range in question. The electron paramagnetic resonance (EPR) spectra reveal formation of both Au2+ (g = 2.17) and Au+ (g < 2) intermediates incompletely reduced as well as Au0 clusters (g = 2.062) with odd number of atoms. The latter is coupled in many cases by the narrow signal with g = 2.0048 attributed to the radical in the supporting surrounding (tannin containing matrix in our case).
Amorphous silicon PEC-PV hybrid structure for photo-electrochemical water splitting
Authors: Mikolasek Miroslav , Kemeny Martin , Chymo Filip , Ondrejka Peter , Huran Jozef
Published: October 2019

The paper presents fabrication and characterization of amorphous silicon carbide (a-SiC:H) based structures for photo-electrochemical (PEC) water splitting. The increase of the photocurrent of PEC upon the decreased of CH4 flow during the deposition is associated with the decrease of the band gap and increased absorption of light in a-SiC:H. Photocurrent of 50 µA/cm2 is achieved for PEC structure prepared with the lowest CH4 flow during the deposition. An ITO/a-SiC:H/Si silicon heterojunction structure forming a simple photovoltaic cell (PV) with efficiency of 9.66% was prepared to support additional voltage hereby forming a hybrid PEC-PV system. ASA simulation revealed that a photocurrent of 0.62 mA/cm2 and solar to hydrogen efficiency of 0.76% can be achieved for hybrid a PEC-PV structure with 5 PVs connected in series behind the PEC cell. Further opportunities for increasing the performance are discussed and summarized.
Structural and optical characterization of Cu doped ZnO thin films deposited by RF magnetron sputtering
Authors: Toma Maria , Ursulean Nicolae , Marconi Daniel , Pop Aurel
Published: October 2019

Cu doped transparent ZnO thin films (CZO) were sputtered on soda lime glass substrates at three different distances between substrate and target. The effects of copper doping on the structural and optical properties were investigated by X-ray diffraction (XRD) and transmittance measurements. The XRD results indicated that CZO thin films have a preferential crystallographic orientation along the hexagonal wurtzite (002) axis. With increasing the distance between substrate-target, from 4 cm to 8 cm, the refractive index of the CZO films decreased. In the visible wavelength region, the average value of the transmittance was above 80%. Thus, significant changes in the structural and optical properties have occurred due to the decrease of the distance between the target-substrate and the residual compressive stress at the film-substrate interface arising during deposition.
The Organisation of Cultural and Social Life in Selected Successful Villages
Authors: Bahna Vladimír
Published: October 2019

This paper compares the methods of organisation of cultural and social life in three municipalities which were awarded the “Village of the Year” title, namely the municipalities of Oravská Lesná, Liptovská Teplička and Spišský Hrhov. The research in these three municipalities suggests several historical and socio-economic similarities between the villages of Oravská Lesná and Liptovská Teplička, which contrasts with the situation in Spišský Hrhov. These similarities and differences between the municipalities are also manifested at the level of their cultural and social life and development strategies. On one hand, we have the traditional mountainous villages with stable long-term and internally driven demography; on the other hand, a changing municipality with a high rate of immigration. In the former case, activities related to the identity of a traditional municipality are being developed, while in the latter case, the identity of the municipality is being actively created also through new cultural and social activities. The key factors of the municipalities’ cultural and social life in both cases are initiative inhabitants and proactive self-governments open to their initiatives.
Participatory Observation of the Celebration of Czechoslovakia’s Centenary at the All-Sokol Rally (“Let’s Get Stronger!”)
Authors: Beňušková Zuzana
Published: October 2019

The aim of this paper is to present the form of celebration of the 100th anniversary of the Czechoslovak Republic. The physical culture association Sokol played an important role in the foundation of the republic and became part of the Slovak civil associations scene in 1918. The XVIth All-Sokol Ralley (Všesokolský zlet) in 2018 was one of the official events dedicated to the celebration of Czechoslovakia’s anniversary. For this occasion, the Slovak-Czech piece of motion music „Spolu” (“Together”) was composed. Based on participatory observation of the rehearsals in the role of a trainee, as well as interviews with the author of the music and observations at the All-Sokol Ralley, I have explored the symbolism of the celebration and reflected on the participation of Slovak women in this event.
Perceived work ability index of public service employees in relation to ageing and gender: A comparison in three European countries
Authors: Pranjic Nurka , Gonzales Juan Manuel Garcia , Cvejanov-Kezunović Ljiljana
Published: October 2019

Background

Increasing longevity raised the prospect of a workplace for ageing workers. Previous studies reveal that work ability decreases with age, even among the healthy, and decreased significantly with age among women. The aim of the study is to examine the perception of work ability of public sector employees aged 55 years and older and gender differences in three European countries.

Methods

A prospective longitudinal study design and standardized “Work Ability Index” (WAI) were used. This study analysed the relationship between ageing, gender, and perceived work ability among 1653 employees aged 45.06±10.90 years (562 men and 1091 women) from Spain, Bosnia and Herzegovina and Monte Negro. The research was conducted in 2018.

Results

Older employees had a better WAI than their younger colleagues (P<0.001). The lowest prevalence rate 20% of excellent WAI was between 35 and 44 years of age. The reduction of WAI in Bosnia and Herzegovina was huge 68%, compared with 30% in Monte Negro (more than 2 times) and 14% in Spain (almost 5 times more).

Conclusion

Gender and age was not protector and predictor of excellent or reduced work ability. Work ability did not decrease with age among women and men, public sector employees. Work ability depends of health and safety, promotion and preventive activities at the workplace.
Erdheim-Chester disease: a case report with rare presentation of a catastrophic disease
Authors: Alves Rita Valério , Calixto Rita , Luz Ivan , Santos Paulo , Barreto Patrícia , Gonçalves Hernâni , Góis Mário , Viana Helena , Lobos Ana Vila
Published: October 2019

Background:

Erdheim-Chester disease (ECD) is a non-Langerhans cell histiocytoses with multiorgan xanthomatous infiltration of tissues by histiocytes, surrounded by fibrosis.

Case Presentation:

A 68-year-old Caucasian female was admitted to the emergency department for dyspnea. The patient was given empiric antibiotic therapy with Piperacilin/Tazobactam, but after 10 days the patient underwent respiratory failure accompanied with worsening of the renal function, noninvasive ventilation and diuretics for perfusion were given, but the treatment was unresponsive. Kidney Computed Tomography showed enlargement of both kidneys, suggesting an inflammatory process. A renal biopsy was performed which confirmed the diagnosis of ECD.

Conclusion:

It is an overlooked diagnosis due to its rarity, variable presentation, and the subsequent manifestations may also develop after several years.
PENGARUH CORPORATE SOCIAL RESPONSIBILITY TERHADAP KINERJA KEUANGAN PADA PERUSAHAAN PROPERTI DAN REAL ESTATE YANG TERDAFTAR DI BURSA EFEK INDONESIA TAHUN 2013-2017
Authors: Ahyani Rahmelia , Puspitasari Windhy
Published: October 2019

This study aims to examine the effect of Corporate Social Responsibility (CSR) on Financial Performance on Return On Assets (ROA), Return On Equity (ROE) and Net Profit Margin (NPM). The population used in this study is the Sub-Sector Services company of Property and Real Estate listed on the Indonesia Stock Exchange in 2013-2017. Data collection used purposive sampling method which aims to determine the samples taken with certain criteria and objectives, deliberate data collection to be included in the criteria according to the research. Based on sample collection techniques obtained as many as 175 companies.The results found that 1) Corporate Social Responsibility (CSR) had a significant positive effect on corporate financial performance as measured by ROA, 2) Corporate Social Responsibility (CSR) had a significant positive effect on corporate financial performance as measured by ROE, and 3) Corporate Social Responsibility (CSR) had a significant positive effect on the company's financial performance as measured by NPM. This research has implications for the property and real estate industry sector in improving its financial performance through CSR disclosure considering the higher the corporate social responsibility disclosure, the higher the company's financial performance.
KEADILAN ORGANISASI SEBAGAI PEMODERASI FAKTOR-FAKTOR YANG MEMENGARUHI INTENSI KECURANGAN
Authors: M Lenny Carolina , Nazir Nazmel
Published: October 2019

The purpose of this research is empirically to find out the effect of management morality, effectiveness of internal control, compensation, organizational ethical culture, and organization justice as a moderating variable on intention of fraud. This research was conducted on employees who work in the finance department at companies in the Jakarta area with a sample of 150 respondents. Sampling technique used is convenience sampling. This research is included in quantitative research. Source of data in this research is primary data. Data were collected using questionnaires distributed to respondents. Data analysis method using Structural Equation Model (SEM) with WarpPLS data processing tool version 0.6Based on the results of the analysis can be concluded that effectiveness of internal control and compensation has a negative effect on intention of fraud. While Management morality and organizational ethical culture has no effect on intention of fraud. Organization justice can only weaken the negative effect of effectiveness of internal controls and compensation on intention of fraud.
ANALISIS FAKTOR-FAKTOR YANG MEMPENGARUHI UNDERPRICING SAHAM PADA PENAWARAN UMUM PERDANA DI BEI PERIODE 2015-2017
Authors: Budi Kuncoro Himawan , Suryaputri Rossje Vitarimetawatty
Published: October 2019

This study aims to analyze the effect of debt to equity ratio, underwriter reputation, company age, type of industry, return on equity, company size, inflation rate on underpricing of shares in the initial public offering on the IDX. The data used is secondary data obtained from the financial statements of companies listed on the IDX. Determination of the sample in this study using purposive sampling technique with 3 years observation that is 2015-2017 in order to obtain a sample of 59 observing companies. The analysis technique used in this study is multiple linear regression. The analytical tool used to test the hypothesis is SPSS 22. The results of the analysis show that the variabel underwriter reputation, return on equity, and company size negatively affect underpricing, while the debt to equitry ratio, company age, industry type and inflation rate have no effect on underpricing
ANALISIS FAKTOR-FAKTOR YANG MEMPENGARUHI PENDAPATAN ASLI DAERAH KABUPATEN BANJAR NEGARA (Studi Deskriptif Pada Kabupaten Banjarnegara-Jawa Tengah)
Authors: Jatmiko Bambang , Wicaksono Ilham Gilar
Published: October 2019

The purpose of this study is to test and prove empirically the existence of correlations between variables of regional taxes, population, economic growth and regional expenditure. The problem in regional revenue (PAD) in Banjarnegara District which is not in accordance with the target set even the income is less than the target set in the previous year. The subject of this study is the Regional Financial and Asset Revenue Management Agency (BPPKAD) of Kabupaten Banjarnegara with an object of financial statements containing regional income, regional expenditure, regional tax, and gross regional domestic income (GRDP). In addition, researchers also use data on the number of population included in the productive age category, the data obtained through the official web of the Central Statistics Agency (BPS) of Banjarnegara Regency. This study uses qualitative methods with secondary data retrieval. Sampling in this study using purposive sampling. The analiss method used in this research is descriptive study. The application to process data in this study uses SPSS v.15.0. The research model used is multiple correlation, where the test aims to find correlations or relationships between two or more variables. Furthermore, the researchers also used the value for money (VFM) method to analyze the PAD owned by the Banjarnegara Regency government. The value for money method has three criteria, namely, efficient, effective and economical (3E).
Authors: Nurbaiti Annisa , Suatkab Nuraini
Published: October 2019

Fraudulent financial statement merupakan kecurangan yang paling jarang terjadi namun memiliki dampak kerugian yang paling besar dibanding jenis kecurangan lainnya. Hal ini tentu dapat membuat kekeliruan dalam hal pengambilan keputusan. Penelitian ini bertujuan menganalisis fraudulent financial statement dalam perspektif fraud diamond berupa pressure, opportunity, rationalization, dan capability. Jumlah sampel adalah sebanyak 175 yang terdiri dari 35 perusahaan properti, real estate, dan konstruksi bangunan yang terdaftar di BEI tahun 2013-2017. Teknik analisis yang digunakan dalam penelitian ini adalah analisis regresi data panel dengan menggunakan software EVIEWS 9. Hasil penelitian menunjukkan bahwa financial stability, external pressure, financial target, nature of industry, ineffective monitoring, change in auditor, opini audit, change in director berpengaruh secara simultan terhadap fraudulent financial statement. Secara parsial, financial target, nature of industry, ineffective monitoring berpengaruh positif signifikan terhadap fraudulent financial statement sedangkan financial stability, external pressure, change in auditor, opini audit, dan change in director tidak berpengaruh terhadap fraudulent financial statement
Confidence Intervals: Linking Evidence to Practice
Authors: Kamper Steven J.
Published: October 2019

Two previous Evidence in Practice articles described the shift in clinical research toward using between-group differences as the measure of treatment effectiveness. One key advantage to reporting the between-group difference (the effect estimate), as opposed to only providing a P value from a hypothesis test, is that it tells the reader about the size of the effect. Confidence intervals give the reader critical information about the precision of an effect estimate reported in a trial. Integrating information about the likely effect and its precision, along with understanding the concept of clinical meaningfulness, helps the clinician engage patients in an informed, shared decision-making process. J Orthop Sports Phys Ther 2019;49(10):763–764. doi:10.2519/jospt.2019.0706
AVALIAÇÃO DAS PROPRIEDADES MECÂNICAS E DA RESISTÊNCIA À CORROSÃO ELETROQUÍMICA DO AÇO ASTM A572 E DE JUNTAS SOLDADAS
Authors: Vidal dos Santos Fernando , Gonçalves Carneiro José Rubens
Published: October 2019

A demanda por materiais que combinassem alta resistência mecânica associada a melhor soldabilidade, tenacidade e resistência à corrosão atmosférica impulssionou a criação dos aços microligados. Este trabalho teve como objetivo avaliar a estrutura, as propriedades mecânicas e a resistência à corrosão eletroquímica numa solução de ácido sulfúrico do aço microligado ASTM A572 Grau 5- antes e após processos de soldagem GMAW - MAG e FCAW. A fim de analisar a macroestrutura e a microestrutura foram utilizadas as técnicas de estereomicroscopia e microscopia ótica, respectivamente. A avaliação das propriedades mecânicas se deu através de ensaios de microdureza e de tração. Utilizando a modelagem tridimensional computacional com o software Abaqus, foi possível realizar simulações por meio da técnica de elementos finitos, que reproduz o ensaio graficamente a partir da curva tensão versus deformação verdadeira proveniente do ensaio mecânico de tração. Não foram observadas descontinuidades nas juntas soldadas e valores de microdureza e das propriedades mecânicas de tração não indicaram fragilização do material. Verificou-se que a simulação numérica é eficiente e confiável quando comparados com os ensaios mecânicos de tração. As curvas seguiram de forma paralela no regime elástico, tendo valores um pouco menores. Os resultados do ensaio de corrosão eletroquímica mostraram que a soldagem GMAW – MAG  resultou num metal de solda com resistência à corrosão maior que do metal base, mostrando que a escolha do processo de soldagem e do metal de adição  é importante não só para estabelecer propriedades mecânicas apropriadas, mas também resistência à corrosão eletroquímica.
Materials with the CrVO4 Structure Type as Candidate Superprotonic Conductors
Authors: Wisesa Pandu , Li Chenyang , wang chuhong , Mueller Tim
Published: October 2019

To accelerate the search for novel proton-conducting oxides, we have performed a computational screen of the proton migration energy in 41 different commonly-occurring oxide structure types. The results of this screen, which are supported by a comprehensive set of density functional theory calculations, indicate that known materials with the CrVO4 structure type have an average migration energy for proton diffusion of less than 0.2 eV, with several known materials having calculated migration energies below 0.1 eV. These results indicate that materials with the CrVO4 structure type may exhibit very high proton conductivity that surpasses that of leading proton-conducting oxides. We present the results of our screen as well as diffusion dimensionality analysis and thermodynamic stability analysis for materials with the CrVO4 structure.
Fluorinated 1,2,3-Triazoles from α-Fluoronitroalkenes as Surrogates of α-Fluoroalkynes via Regioselective Cycloaddition Reactions with Organic Azides
Authors: Jana Sampad , Adhikari Sweta , Cox Michael , Roy Sudeshna
Published: October 2019

Here we show that 1-fluoronitroalkenes can serve as synthetic surrogates of 1-fluoroalkynes in [3+2] cycloaddition reactions with organic azides facilitated by a catalytic amount of trifluoroacetic acid.
Coaction of Electrostatic and Hydrophobic Interactions: Dynamic Constraints on Disordered TrkA Juxtamembrane Domain
Authors: Wang Zichen , Fan Huaxun , Hu Xiao , Khamo John , Diao Jiajie , Zhang Kai , Pogorelov Taras
Published: October 2019

The receptor tyrosine kinase family transmits signals into cell via a single transmembrane helix and a flexible juxtamembrane domain (JMD). Membrane dynamics makes it challenging to study the structural mechanism of receptor activation experimentally. In this study, we employ all-atom molecular dynamics with Highly Mobile Membrane-Mimetic to capture membrane interactions with the JMD of tropomyosin receptor kinase A (TrkA). We find that PIP2 lipids engage in lasting binding to multiple basic residues and compete with salt bridge within the peptide. We discover three residues insertion into the membrane, and perturb it through computationally designed point mutations. Single-molecule experiments indicate the contribution from hydrophobic insertion is comparable to electrostatic binding, and in-cell experiments show that enhanced TrkA-JMD insertion promotes receptor ubiquitination. Our joint work points to a scenario where basic and hydrophobic residues on disordered domains interact with lipid headgroups and tails, respectively, to restrain flexibility and potentially modulate protein function.
Solvent-Free Powder Synthesis and Thin Film Chemical Vapour Deposition of a Zinc Bipyridyl-Triazolate Framework
Authors: Stassin Timothée , Stassen Ivo , Wauteraerts Nathalie , Cruz Alexander John , Kräuter Marianne , Coclite Anna Maria , De Vos Dirk , Ameloot Rob
Published: October 2019

MAF-252, a non-porous crystalline coordination polymer, is obtained from the solvent-free reaction of ZnO with 3-(2-pyridyl)-5-(4-pyridyl)-1,2,4-triazole. MAF-252 can be synthesized in powder form and deposited as thin films, starting from ZnO powder and layers, respectively. Chemical vapour deposition (CVD) of MAF-252 enables conformal and patterned thin films, even on high aspect ratio features.
Exhaustive Reduction of Esters Enabled by Nickel Catalysis
Authors: prakash sekar , Cook Adam , zheng yan-long , Newman Stephen
Published: October 2019

We report a one-step procedure to directly reduce unactivated aryl esters into their corresponding tolyl-derivatives. This is achieved by the action of a Ni/NHC catalyst and an organosilane reducing agent that is activated in situ by stoichiometric KOtBu. The resulting conditions provide a direct and efficient alternative to multi-step procedures for this transformation that often require use of hazardous metal hydrides. Applications in the synthesis of –CD3 containing products, derivatization of bioactive molecules, and chemoselective reduction in the presence of other C–O bonds is demonstrated.
PEPPI-MS: Strategies to Enhance the Extraction of Electrophoretically Separated Proteins from Polyacrylamide Gels and Their Application to Top-Down/native Mass Spectrometry
Authors: Takemori Ayako , Anderson Lissa C , Harman Victoria M. , Brownridge Philip , Butcher David , Shima Keisuke , Higo Daisuke , Ishizaki Jun , Hasegawa Hitoshi , Suzuki Junpei , Yamashita Masakatsu , Loo Joseph A. , R. Ogorzalek Loo Rachel , Beynon Robert J. , Takemori Nobuaki
Published: October 2019

Polyacrylamide gel electrophoresis (PAGE) is a powerful technique for separating proteins from complex biological samples. However, the difficulty in recovering proteins with high yields from polyacrylamide matrices often precludes further analyses of intact proteins. Here, we propose a novel experimental workflow named Passively Eluting Proteins from Polyacrylamide gels as Intact species for MS (‘PEPPI-MS’), which allows intact mass spectrometry (MS) of PAGE separated proteins. We discovered that staining proteins with certain Coomassie brilliant blue formulations immediately after PAGE improves the efficiency of extraction in a medium with pH 7–11. Post-staining, proteins spanning a broad range of molecular weights were recovered efficiently in a 10-minute procedure. High recovery yields were also obtained from dried and archived gels. This workflow is effective for top-down proteomics analysis of the target molecular region in the gel. An alternative procedure was developed for the extraction of protein complexes exceeding 400 kDa, which were separated using native PAGE, from unstained gels. Non-covalent hemoglobin tetramer, purified from cell lysate with two-dimensional native PAGE and extracted with the mild detergent octyl-β-Dglucopyranoside, was amenable for native MS analysis. We anticipate that the established workflow will facilitate the purification, storage, and transport of proteins destined for detailed characterization by MS.
Utilizing Copper-Mediated Deprotection of Selenazolidine for Cyclic Peptides Synthesis
Authors: Zhao Zhenguang , Metanis Norman
Published: October 2019

Selenazoliline (Sez) was originally developed as a masking form of selenocysteine (Sec) for the chemical synthesis of challenging proteins. Here we utilize Sez and our recent reported copper(II)-mediated deprotection for the synthesis of cyclic peptides. This approach allows deprotection, cyclization and deselenization in one-pot, providing several different cyclic peptides in good yields. In addition, the Sec can also be retained, which enhance the oxidative folding of disulfide-rich cyclic proteins, such as the case of Kalata S.
Short Syntheses of 1-Substituted Dibenzothiophenes and 3-Substituted Naphthothiophenes
Authors: Welsh Erin N. , Burke Emily K. , Roberston Katherine , Speed Alex
Published: October 2019

The 1-substituted dibenzothiophene motif is an unusual substitution pattern. We demonstrate a simple one-pot preparation of 1-lithiodibenzothiophene via a cascade of two benzyne additions and conversion to the aldehyde, boronic ester, and iodide. This work avoids the use of precious metals or tert-butyllithium and is shorter than existing routes to these compounds. We also report an improved route to the isomeric 3-substituted naphthothiophene scaffold. These protocols will allow rapid access to families of these two related heteroacenes.
Simultaneous Generation of a [2×2] Grid-like Complex and a Linear Double Helicate: A Three-Level Self-Sorting Process
Authors: Ayme Jean-François , Lehn Jean-Marie , Bailly Corinne , Karmazin Lydia
Published: October 2019

Two constitutional dynamic libraries (CDLs)—each containing two amines, two dialdehydes and two metal salts—have been found to self-sort, generating two pairs of imine-based metallosupramolecular architectures sharing no component, a [2×2] grid-like complex and a linear double helicate. These CDLs provided unique examples of a three-level self-sorting process, as only two imine-based ligand constituents, two metal complexes and two architectures were selected during their assembling out of all the possible combinations of their initial components. The metallosupramolecular architectures assembled were characterized by NMR, mass spectroscopy, and X-ray crystallography.
A Minimalistic Hydrolase Based on Co-Assembled Cyclic Dipeptides
Authors: Kleinsmann Alexander , Nachtsheim Boris
Published: October 2019

This paper describes minimalistic cyclic dipeptides acting as esterase-mimicks in a self-assembled hydrogel state. It demonstrates that cyclic dipeptides could have acted as enzyme-precursors on a primordial earth and hence be important for abiogenesis.
PENYIMPANGAN PRINSIP KESANTUNAN BERBAHASA DALAM INTERAKSI BELAJAR-MENGAJAR BAHASA INDONESIA SISWA KELAS XI SMA NEGERI 2 PANCA RIJANG SIDENRENG RAPPANG [The Deviations of Language Politeness Principle in Learning-Teaching Interaction in Bahasa Indonesia of Class XI Students at SMAN 2 Panca Rijang Sidenreng Rappang]
Authors: Musyawir Musyawir
Published: October 2019

The research aims to describe the types of deviation of language politeness principle and the cause of deviation. The research was qualitative. The data of the research were all of the students’ speeches or oral conversation discourse and speech information situation. The data source was obtained from the students of class XI at SMAN 2 Panca Rijang Sidenreng Rappang.The data of the research were collected by recording, note-king, and unstructured interview technique. The data of the research were analyzed through four stages, namely data collections, data reduction, presentation, as well as data analysis and conclusions/verification. The results of the research reveal that the deviations of language politeness principle which were occurred in learning-teaching interaction in Bahasa Indonesia of class XI students at SMAN 2 Panca Rijang Sidenreng Rappang are single and double deviation. The causes of the deviation of language politeness principle in learning-teaching interactions in Bahasa Indonesia of class XI students at SMAN 2 Panca Rijang Sidenreng Rappang cover (1) deviation caused by the speakers intentionally accused the speaking partner, (2) intentionally speak not accordance with the context, (3) protective on opinion, (4) the speaker’s emotional impulse, (5) direct critic with harsh words, (6) mocking, and (7) no sympathy given to the speaking partner.              Penelitian ini bertujuan untuk mendeskripsikan jenis-jenis penyimpangan prinsip kesantunan berbahasa dan penyebab penyimpangan. Jenis penelitian ini tergolong penelitian kualitatif. Data dalam penelitian ini adalah seluruh tuturan siswa atau wacana percakapan lisan dan informasi situasi tutur. Adapun sumber data diperoleh dari siswa kelas XI SMA Negeri 2 Panca Rijang Sidenreng Rappang. Teknik pengumpulan data yang digunakan adalah teknik rekam, teknik catat, dan wawancara tidak terstruktur. Analisis data melalui empat tahapan,yakni pengumpulan data, reduksi data, penyajian sekaligus penganalisisan data dan penyimpulan /verifikasi. Hasil penelitian  menunjukkan  bahwa  penyimpangan  prinsip kesantunan berbahasa yang terjadi dalam interaksi belajar-mengajar bahasa Indonesia siswa kelas XI SMA Negeri 2 Panca Rijang Sidenreng Rappang, yakni penyimpangan tunggal dan penyimpangan ganda. Penyebab penyimpangan prinsip kesantunan berbahasa dalam interaksi belajar-mengajar bahasa Indonesia siswa kelas XI SMA Negeri 2 Panca Rijang Sidenreng Rappang meliputi (1) penyimpangan disebabkan oleh penutur sengaja menuduh mitra tutur, (2) sengaja berbicara tidak sesuai dengan konteks, (3) protektif terhadap pendapat, (4) dorongan rasa emosi penutur, (5) kritik secara langsung dengan kata-kata kasar, dan (6) mengejek, serta (7) tidak memberikan rasa simpati kepada mitra tutur.
Reflexões em torno do teatro-música de Constança Capdeville
Authors: Magalhães Filipa
Published: October 2019

Constança Capdeville é a maior representante do teatro-música em Portugal. As suas composições vão além do musical, incluindo recursos extramusicais, como adereços, luzes, imagens, elementos teatrais e gravações em fita magnética.Esses recursos foram introduzidos nas suas obras, seja para estabelecer ambientes, estados emocionais ou para definir espaços. As obras de teatro-música de Capdeville, apesar de seu sucesso, também suscitaram reações controversas no público. Na perspetiva da compositora, a ópera e o concerto tradicional tinham terminado e, portanto, o conceito do palco deveria ser repensado. Capdeville referiu que, muitas vezes, teve que resolver esse problema criando os seus próprios palcos. Neste artigo, discutiremos o conceito de teatro-música no contexto da música contemporânea portuguesa e as suas influências nas composições de Capdeville.
Listening | the open – music as disruptive topological experience
Authors: Sá Joana
Published: October 2019

This article reflects on the relation between music body(ies)1, body(ies) of music2 and notions of musical ‘space-time’ in the composition and performance process of Listening | the open, a trilogy for disruptive bodies, by Joana Sá.Bringing into discussion new possible notions of space of music as both intrinsic and extrinsic dimensions of music body(ies), and of the body(ies) of music, it proposes approaching music as a disruptive topology. Presentingstrategies that are beyond the dualities of control/out of control, self/other, it emphasizes the fragment or fragmentation as a crucial basic topological event for triggering the musical processes.
Fathers perceptions and personal experiences of Complementary feeding of children 6 to 23 months in south-western Zimbabwe
Authors: Moyo Shamiso Alice , Schaay Nikki
Published: October 2019

Background: The role of fathers in infant and young child feeding has not been explored in Zimbabwe. To date, local research studies on the role of parents in infant and young child feeding have focused more on the mothers than the fathers, and more on breastfeeding than complementary feeding practices, which begin from 6 months of age.

Purpose of study: To explore the knowledge and extent of involvement of fathers in the complementary feeding of children 6 to 23 months in Zimbabwe.

Method: Through a qualitative approach, 10 fathers with children aged 6 to 23 months participated in the study. Local key informants were used to validate information given by fathers. Thematic analysis was used to identify emergent themes.

Results: There has been a notable change in behaviour among the fathers in comparison to what they did 10 years ago. For example, they support their wives with household activities such as playing with the child, fetching water and firewood in bulk and cooking simple meals for their children, though the latter was generally reported as being done only during the mothers’ absence. Some of the fathers however, are still mindful of what the predominant culture defines as a father’s role in child feeding and thus only do selective activities.

Major conclusion: This qualitative study, a first of its kind, delved into some of the experiences and perceptions of fathers in the complementary feeding of infants 6 to 23 months in Zimbabwe. Rich exploratory insights into the subject matter have been provided and can thus be expanded upon in future research.
People’s Health Movement: A Call to Action on Nutrition, Food Security and Food Sovereignty.
Authors: Schuftan Claudio , Sanders David , Prasad Vandana
Published: October 2019

This is a position paper of the People's Health Movement.
Comportamiento de las Complicaciones en Adolescentes Embarazadas en la E.S.E Hospital la Divina Misericordia Magangué Bolívar, Durante el Año 2015.
Authors: Gómez Mejía Wendy Luz , Ramos Ely Cala , Guerra Hernández Katherine , Torres Walter
Published: October 2019

Introducción. El embarazo en adolescentes es una condición que mundialmente va en aumento; se considera que esto se debe a múltiples factores entre los cuales se podría mencionar: la constitución de la familia, las condiciones sociales y culturales y de los medios de comunicación.  Las tasas de fertilidad adolescente en la región de América Latina y el Caribe no han descendido en la misma proporción que las de nivel global. De hecho, la División de Población del Departamento de Asuntos Económicos y Sociales de Naciones Unidas prevé que serán las más altas del mundo y se mantendrán estables entre 2020 y 2021 (1).

Objetivo. identificar las complicaciones frecuentes y los factores de riesgo en las adolescentes embarazadas, en el ESE Hospital la Divina Misericordia Magangué bolívar, año 2015.

Materiales y Métodos. como muestra, se tomaron 30 gestantes adolescentes, de un total de 484, mediante el análisis de historias clínicas, el cual incluyó mediciones antropométricas (peso, talla, edad,) y determinación del estado nutricional.

Resultados. Los 30 casos evidenciaron complicaciones durante su gestación. Dos casos con un 6,7% correspondieron a adolescentes tempranas, mientras que 28 casos 93,3% fueron adolescentes tardías.

Conclusiones. Las complicaciones obstétricas como la anemia severa con 14 casos, 58,3% evidencia un alto impacto en el estrato I de la población de estudio.
Rapid and selective extraction of trace amount of Pb(II) in aqueous samples using a magnetic ion-imprinted polymer and detection by flame atomic absorption spectrometry
Authors: Babaee Saeed , Hosseini Seyed Ghorban , Mirzaei Mohammad
Published: October 2019

A magnetic Pb(II) ion-imprinted polymer was synthesized using magnetic Fe3O4@SiO2 nanospheres as supporter, n-benzoyl-n-phenyl hydroxylamine as ligand, 4-vinyl pyridine as monomer, ethylene glycol dimethacrylate as crosslinker and 2,2′-azobis(isobutyronitrile) as the initiator. The template was removed from the polymer using 4 mL of HCl (2 mol L-1). The chemical structure, morphology-particle size, elemental analysis, thermal behavior and magnetic properties of the sorbent were evaluated using Fourier-transform infrared spectroscopy, scanning electron microscopy & ImageJ software - Energy dispersive X-ray system, thermal gravimetric analysis and vibrating sample magnetometry. Various parameters such as pH, equilibrium extraction time, temperature and the eluent were optimized. The results showed the sorbent adsorption capacity was 92.3 mg g-1 in pH 6.0 media, equilibrium time of 7 min at 40 °C. Calibration linearity was 2-150 µg L-1 with detection limit of 0.3 µg L-1. The prepared sorbent had high selectivity and was successfully applied to the removing of lead in real samples.
PEDAGOGICAL TRAINING OF LEARNING
ENGINEER
Authors: Kukharenko Volodymyr
Published: October 2019

Digital technologies command determines the information and
professional competence of a teacher. The first competences help him to
organize a modern educational process, others provide access to the
latest professional information. Studies show that serious complex
strategies for the use of digital technologies are beginning to emerge,
and a teacher is becoming a leader in future education. Digital
technologies are becoming more complicated and there is an urgent need
for new professionals - learning engineers who have to provide new
strategies in education. The paper considers a complex of open distance
courses for the training of teachers to use new educational technologies.
The courses use the results of the annual polls of the world's pedagogical
community to identify popular pedagogical instruments. They form
teachers’ personal knowledge mastery. This contributes to the
development of a personal learning environment and a teacher's personal
learning network. The learning engineer's training system should consist
of software engineering and the proposed teaching block. The last block
includes sections for the formation of skills of personal knowledge
mastery, the design of a distance course, the development of the
structure, organization of distance and blended learning, expertise of the
distance course. All sections of the pedagogical unit were tested in open
distance courses at the Research Laboratory of Distance Learning at NTU
"KhPI". During 2013-2018 open distance learning courses were learnt by
more than 2,600 teachers of Ukraine and 370 of them successfully
completed the training. The next step should be to integrate efforts with
IT specialists, identify competencies of the learning engineer and prepare
a training program for a specialist in the future.
SELECTION OF THE DISTANCE
LEARNING MANAGEMENT SYSTEM FOR
PEDAGOGICAL HIGHER EDUCATION
INSTITUTIONS
Authors: Mukoviz Oleksii , Ihnatenko Nataliia , Kovtun Oksana
Published: October 2019

The article deals with various distance learning management system for
pedagogical higher education institution. The most prominent distance
learning management systems are mostly focused on: Moodle, WebCT,
BlackBoard, eFront, Claroline, Metacoon, SharePoint LMS and Virtual
University. Having analyzed the best platforms for creating of distance
learning system in pedagogical higher education institution, it is stated
that Moodle is leading according to the number of users. Moodle platform
is a software suite for creating distance learning courses and websites
that works with open source IMS and SCORM. As a result of the analysis
and comparisons of the abovementioned platforms, based on
pedagogical, didactic, organizational, technical, financial distance
learning features, the distance learning management system in State
Higher Educational Institution «Pereiaslav-Khmelnytskyi Hryhorii
Skovoroda State Pedagogical University» on the basis of Moodle platform
is developed. The platform works in different web browsers. There are no
special requirements for hardware and operating system. Moodle
platform can be installed on any server with any operating system using
arbitrary databases. The platform is free for users. Moodle distance
learning management system consists of 35 modules: Chat module, Task
module, Forum module, Log module, Test module, Resource module,
Research module, Seminar module and so on. Moodle distance learning
management system enables distance learning in higher education at an
affordable innovation level, creates a calendar of learning process events,
creates formal algorithms for the teacher's activity in the educational
process, thereby achieving a high level of interactivity and achievement
of the required level of quality, skills.
PECULIARITIES OF PROJECT
ACTIVITIES OF FUTURE PRIMARY
SCHOOL TEACHERS
Authors: Pavliuk Bohdan
Published: October 2019

The peculiarities of project activity of future primary school teachers
during professional training in higher education institutions are
considered in the article. One of the activities that helps to shape the
professionalism of future primary school teachers is project activity,
which is an integral part of the work of future professionals during the
educational process. The article focuses on ICT as a tool used in project
activities. With the help of ICT, future professionals will be able to help
create a standalone product project. Therefore, when using ICT in
primary school, future primary school teachers should learn to give
students the freedom to choose and equip them with the necessary tools.
Future primary school teachers should recognize as a core value
students’ personalities, their personal and subjective qualities as the
basis for organizing the educational process. At the heart of modern
education reforms there is not only gaining knowledge at the lessons in
primary school , but also students' independent search and project
activity. In the course of the research we found that the use of ICT in
project activities can be divided into the following blocks: the use of ICT
in the creation of projects (information search, typing and description of
information found); discussion of projects (network communication); use
of ICT in presenting results. Analyzing the processes that contribute to
the formation of project competence of future primary school teachers in
the process of vocational training, we have identified the following stages
of work during the project work in the project activity process:
motivational; design; activity-related; reflexive evaluation. The stages of
project work proposed by us during the project activity of future
elementary school teachers help to shape the project competence of
future specialists during vocational training.
USING GOOGLE LENS AUGMENTED
REALITY TOOL TO PROVIDE STEM
EDUCATION IN BIOLOGY LESSONS
Authors: Shapovalov Viktor , Shapovalov Yevhenii , Bilyk Zhanna
Published: October 2019

Implementation of approaches which increase student’s motivation to
study is embedded in national and international strategic programs, in
particular, the New Ukrainian School concept and the Education 2030
strategy (UNESCO), and the main trends are outlined in the Europe
development strategies 2020 and Europe 2030. A promising approach to
enhancing student motivation is to use information technology in
teaching. Augmented reality tools allow to immerse a student in the
learning process through the combination of the real world and the
virtual environment. However, these approaches are hardly used in the
Ukrainian educational process. This is due to the lack of an intuitive
software interface. Google Lens is one of the promising augmented
reality tools that increase students' motivation for learning. It is
affordable and easy to use and has a multilingual interface. Google Lens
is integrated with Google Photos and Google Camera, which can be used
on any Android device running Android 4.4 or higher and iOS. According
to the study, the accuracy of Google Lens recognition is 92.6%. Only in
7.4% of cases, Google Lens did not give a positive result. This indicator
is quite high and much higher than a possibility of a teacher to determine
species diversity of plants. Thus, the use of this tool, especially in the
conditions of expeditions and excursions, is relevant. For the first time
the article highlights the peculiarities of Google Lens, such as the lack of
ability to analyse endemic plants (ethno-Ukrainian), which rarely
represented in the web-resources, and the impact on the quality of the
analysis of the basic parameters of photography. Google Lens
characterised by high potential for use in STEM / STEAM classes because
it facilitates the implementation of the scientific method. To encourage
the use of this tool, we have developed a technique that is available
online on the website stemua.science.
THE DIAGNOSTICS OF THE ADMINISTRATIVE AND QUALITOLOGICAL
COMPETENCY OF STUDENTS IN HEI
Authors: Oksana Kondur , Mykhaylyshyn Galyna , Ridei Nataliia
Published: October 2019

One of the positive effects of globalization processes is providing international quality
of education, promoting the development of information and communication technologies and
their dissemination in education. Globalization manifestations of ensuring the quality of education
are: training a specialist of innovative type; international mobility of trained labor force; mutual
recognition of qualifications by countries in order to enable recruitment of specialists from other
countries; rapid response to the development of the modern economy by training specialists of new
qualifications with knowledge of new technologies; increasing the number of foreign students;
increasing the number of paid-for-study students who consider high-quality education a significant
investment; maintenance of the level of competitiveness of the country in the world export market
of education. The purpose of the article is to develop methods for diagnosing the formation of
ОНЮМКtТoЧ qЮКlТtв ЦКЧКРОЦОЧt spОМТКlТsts’ managerial and qualitative competence. The criteria for
the diagnostics are: motivational-axiological, cognitive, active. The method developed by us
involves formal and informal types of theoretical and practical training of educational systems
quality specialists. It has been approbated. The quality of the method is statistically confirmed
using the Pearson method and single factor analysis dispersion. In the future, the developed
methodology for diagnostics of managerial and qualitative competence is proposed to be
improved. This improved version is used to identify teachers with a high level of competency.
From these teachers, in the future, one can form experts on the quality of education at different
levels: local (for institutions of higher education), regional and even national.