bluuebunny/crossref_metadata_2025_split huggingface dataset:
Electrospinning of Chitosan Biopolymer and Polyethylene Oxide Blends
Authors: Varnaitė-Žuravliova Sandra , Savest Natalja , Baltušnikaitė-Guzaitienė Julija , Abraitienė Aušra , Krumme Andres 
Published: June 2019

Abstract
The objective of this study is to investigate the morphological (scanning electron microscopicy images), thermal (differential scanning calorimetry), and electrical (conductivity) properties and to carry out compositional analysis (Fourier-transform infrared) of produced nonwoven fibrous materials adapted in biomedical applications as scaffolds. The orientation of produced nanofilaments was also investigated because it is considered as one of the essential features of a perfect tissue scaffold. Viscosity and electrical conductivity of solutions, used in the manufacturing process, were also disassembled because these properties highly influence the morphological properties of produced nanofibers. The nanofibrous scaffolds were fabricated via conventional electrospinning technique from biopolymer, synthetic polymer, and their blends. The chitosan (CS) was chosen as biopolymer and polyethylene oxide (PEO) of low molecular weight as synthetic polymer. Solutions from pure CS were unspinnable: beads instead of nanofibers were formed via spinning. The fabrication of pure PEO nanomats from solutions of 10 wt%, 15 wt%, and 20 wt% concentrations (in distilled water) turned out to be successful. The blending of composed CS solutions with PEO ones in ratios of 1:1 optimized the parameters of electrospinning process and provided the opportunity to fabricate CS/PEO blends nanofibers. The concentration of acetic acid (AA) used to dissolve CS finely spuninned the nanofibers from blended solutions and influenced the rate of crystallization of manufactured fiber mats. The concentration of PEO in solutions as well as viscosity of solutions also influenced the diameter and orientation of formed nanofibers. The beadless, highly oriented, and defect-free nanofibers from CS/PEO solutions with the highest concentration of PEO were successfully electrospinned. By varying the concentrations of AA and low molecular weight PEO, it is possible to fabricate beadless and highly oriented nanofiber scaffolds, which freely can found a place in medical applications.
Shingles: More than Meets the Eye
Authors: Komitova Radka T. , Grklanov Vasko A , Lindas Konstantinos K. , Ganeva Petya V. 
Published: June 2019

Abstract
Low-dose once weekly methotrexate (MTX) is the first-line disease-modifying antirheumatic drug (DMARD) to treat rheumatoid arthritis and psoriasis. Although methotrexate is generally considered to have a good safety profile it can occasionally induce severe side effects such as pancytopenia, mucositis, disorders of kidney and liver. Oral mucositis should alert physicians to MTX toxicity. We report a 64-year-old woman with a severe drug reaction including disseminated shingles, oral mucositis and pancytopenia only three days after starting a therapeutic low-dose of MTX. Initially, mucositis and myelosuppression couldn’t be accounted for by the underlying disease. In taking the patient’s history, MTX intake 10 days ago was missed, the patient reporting only current medications. However, there was more to the skin rash than meets the eye. Only after further inquiry did the patient reveal the intake of 2 doses of MTX and the subsequent withdrawal of medication. Arriving at the correct diagnosis in difficult cases, as in the case presented, requires further evaluation, including repeat history taking and eliciting more details if diagnosis remains elusive.
Electromagnetic Interference Issue in Safety Systems Applied at Airports
Authors: Siergiejczyk Mirosław , Rosiński Adam , Paś Jacek 
Published: June 2019

Abstract
The proper operation of electronic devices used in transport facilities is possible by protecting them against the effect of adverse electromagnetic fields. At present, all kinds of facilities, including critical infrastructure facilities, intended for functioning in peace conditions and emergency states, are equipped with power systems and numerous electronic devices, including electronic safety systems. On the basis of observing the process of their operation, it can be concluded that an artificially generated intended or unintended electromagnetic field, within various frequency ranges, may negatively affect the operation of electronic devices. It was found that the operation of the electronic safety systems applied at airports may be subject to interference as a result of the impact of adverse electromagnetic fields. Therefore, it is necessary to analyse the impact of electromagnetic interference on the operation of these systems. This article presents a developed author’s operation process model including electromagnetic interference within low frequencies. The reliability and operation analysis of the electronic safety systems carried out by the authors allows for numerical assessment of various types of solutions – both technical and organisational ones. As a result, they can be implemented, in order to minimise the impact of electromagnetic interference on the system functioning. This is a new approach to this issue, as there are currently designed and installed security systems at airports, but there is no analysis of the impact of electromagnetic interference on their functioning. In further research concerning this issue, the authors plan to further develop reliability-operational models, which will differentiate between the states of partial fitness. It will allow for more accurate mapping of the operation of the electronic safety systems which are applicable at airports.
An Analysis and Testing of Functional Availability Military Vehicles, in the Aspect of Reliability
Authors: Przybysz Kamil 
Published: June 2019

Abstract
The paper pertains to matters related to the quantification of functional availability of military vehicles, with reference to exploitation intensity and reliability aspects. The conducted exploitation research paved the way for elaborating methods of determining functional availability for military vehicles, in particular focusing on exploitation intensity and reliability. The essential research was conducted using the developed mathematical model based on the probabilistic, stochastic Markov process, which allowed modelling the process of changes in the exploitation states of military vehicles. In the course of the research, which enabled the authors to estimate the functional availability value, four-layered probes of the military vehicles were used (different types and makes), from the second exploitation phase, with varied mileage from the beginning of the exploitation and average mileage per year.
Mixed structure Zn(S,O) nanoparticles: synthesis and characterization
Authors: Dhupar Anu , Kumar Suresh , Sharma Vandana , Sharma J.K. 
Published: June 2019

Abstract
In the present work, mixed structure Zn(S,O) nanoparticles have been synthesized using solution based chemical coprecipitation technique. Two different zinc sources (Zn(CH3COO)2·2H2O and ZnSO4·7H2O) and one sulfur source (CSNH2NH2) have been used as primary chemical precursors for the synthesis of the nanoparticles in the presence and absence of a capping agent (EDTA). The structural, morphological, compositional and optical properties of the nanoparticles have been analyzed using X-ray diffraction (XRD), scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDX), Fourier transmission infra-red (FT-IR) and UV-Visible (UV-Vis) spectroscopy. XRD revealed the formation of mixed phases of c-ZnS, h-ZnS and h-ZnO in the synthesized nanoparticles. The surface morphology was analyzed from SEM micrographs which showed noticeable changes due to the effect of EDTA. EDX analysis confirmed the presence of zinc, sulfur and oxygen in Zn(S,O) nanoparticles. FT-IR spectra identified the presence of characteristic absorption peaks of ZnS and ZnO along with other functional group elements. The optical band gap values were found to vary from 4.16 eV to 4.40 eV for Zn(S,O) nanoparticles which are higher in comparison to the band gap values of bulk ZnS and ZnO. These higher band gap values may be attributed to the mixed structure of Zn(S,O) nanoparticles.
Land Degradation and Management within Upper Racova Catchment
Authors: Claudia Samoilă Grigoraș , Ion Ioniță , Lilian Niacșu , Georgel Grigoraș , Maria Blebea-Apostu Ana 
Published: June 2019

Abstract
Land degradation has been recognized as an important environmental threat in the Moldavian Plateau of eastern Romania. This study was designed to estimate the magnitude of land degradation and to review land management in a small catchment in the Central Moldavian Plateau. Several methods were deployed to estimate soil erosion losses, gully distribution, landslide inventory and reservoir sedimentation rates. Results obtained in the study area of 7,766 ha, of which 31% is arable and 32% native forest, show that the mean value of soil losses by water erosion on agricultural land is 19.0 t ha−1y−1. By adding the woodland contribution, this value significantly decreases to 12.8 t ha−1y−1. Then, a large proportion of land (58%) is covered by landslides. Most of them are shallow and dormant (stable), and the active ones form only ~2% of the total landslide area. Siltation rates determined using 137Cs reflect the impact of land management on deposition patterns in reservoirs. Proper conservation measures were applied over a 20-year time-span from 1970-1990. Since 1991 the contour farming system collapsed and returned to the traditional ‘up-and-down slope’ farming system on very small plots.
Extreme Variabilities of Rainfall and Runoff Regime within Vulnerable Hydrographic River Basins. Case Study: Elan River Basin, 2016 (Romania)
Authors: Tudorache Andreea-Violeta 
Published: June 2019

Abstract
The present paper analyzes the extreme variabilities of rainfall and runoff regime within vulnerable hydrographic river basins, focused on a case study: Elan river basin, year 2016. This year, due to excess rainfall, the Elan River basin was affected by torrential rainfall, warned against by orange and red code hydrological forecasts. For this reason, this study makes an analysis of the spatial and temporal variability of the surface runoff also considering the main flood events occurring in this river basin. The impact of liquid precipitation on the surface runoff will be highlighted by a statistical analysis of the relationship between monthly average flows and the sum of monthly precipitation in the river basin. The monthly flows series from the Murgeni and Poșta Elan hydrometric stations were capitalized through appropriate statistical analyses. Maximum flows were reported to the thresholds values corresponding to the Defense Levels.
PELATIHAN PLYOMETRIC DENGAN DEPTH JUMP MENINGKATKAN DAYA LEDAK OTOT TUNGKAI LEBIH BESAR DARIPADA PELATIHAN STANDING JUMP PADA PEMAIN BOLA VOLI PUTRA
Authors: Pratama I Gede Widyatmika , Tirtayasa Ketut , Pinatih Gde Ngurah Indraguna , Adiatmika Putu Gede , Muliarta Made , Griadhi Putu Adiartha 
Published: June 2019

ABSTRACTBackground: Volleyball is a popular sport that is competitive. In volleyball, the volleyball player must play the volleyball over the net. The physical factor that supports that ability is explosion power of legs muscles. One of the ways to increase the explosion power of legs muscles is plyometric exercise. The exercises that were given in this research were plyometric depth jump and standing jump exercises to increase the explosion power of legs muscles. Purpose: The objective of this exercise is to compare the effect of both exercises for increasing the explosion power of legs muscles. Method: This research used experimental method Pre Test and Post Test Group Design in six weeks and frequency of three times a week. The samples are 22 people who are divided into two groups through ordinal pairing technique. The first group was given plyometric depth jump exercise and the second group was given standing jump exercise. The measurement of the explosion power of legs muscles used jump MD that was measured before and after exercises in every groups. Next, the average result was compared with statistical test of t- paired test. Result: The average of the explosion power of legs muscles pre test of the first group was 39.73 ± 3.74 centimeters and the post test was 55.64 ± 4.03 centimeters are statistically significant (p<0.05). Otherwise, on the second group, the pre test was 39.73 ± 3.58 centimeters and the post test was 51.36 ± 3.85 centimeters are statistically significant (p<0.05). The increasing of the explosion power of legs muscles between both groups are significant (p<0.05). The percentage of increasing of plyometric depth jump was 40.05% and for the standing jump was 29.27%. Conclusion: Plyometric depth jump increased the explosion power of legs muscles is bigger than standing jump exercise for all students on the men’s volleyball extracurricular of SMK Triatma Jaya Badung.Keywords : Plyometric depth jump and standing jump exercises, the explosion power of legs muscles, volleyball.
PELATIHAN MODEL BEEF CONCEPT DISERTAI PUSH UP DAN JOGGING LEBIH MENINGKATKAN KETEPATAN SHOOTING FREETHROW BOLA BASKET DARI PADA PELATIHAN MODEL BEEF CONCEPT DISERTAI DUMBEL DAN JOGGING
Authors: Gangga Permana I Kadek Arya , Astawa Putu , Wihandani Desak Made , Tirtayasa Ketut , Jawi I Made , Komang Satriyasa Bagus 
Published: June 2019

ABSTRACTIntroduction: The objective of a basketball game is to insert the ball into the opponent's basket and keep our basket alone so as not to concede the ball. This becomes important because it determines points to improve the ability and maximize points in the game so this needs to be trained. Free throw shots can be done using one hand or two hands. Whereas a free throw is a shot given to a player for committing an offense. This shot is done in the exact position behind the line of free shots in accordance with the rules. Purpose:This study aims to compare training model 1 (beef concept with push up and jogging) and training model 2 (beef concept with dumble and jogging) to improve the accuracy of free throw shooting.This research was conducted on 40 students of SMP Negeri 1 Kuta Selatan who were chosen in simple random which has fulfilled inclusion and exclusion criteria. The sample was divided into two groups so that each group was 20 people and given different treatment for six weeks. Group 1 was given model 1 training and Group 2 was given a model 2 training. Methods:The data obtained were analyzed by paired t- test to find the difference between before and after training in both groups and t-independent test to find the difference of shooting free throw accuracy between groups both before and after the training. The meaning limit is 0.05. The research design used is experimental design Randomized Pre and Post test Group Design. According to Pocock's (2008) theory, each group consisted of 20 groups of 1 and group 2. All groups were given preliminary tests, between treatment one and two treatment were given concurrent training, then each treatment was observed.Results:The result showed that the accuracy of free throw shooting between groups after training was 3.85 ± 1.09 in group 1 and in group 2 was 2.90 ± 1.12. The average accuracy of free throw shooting in training model 1 was higher than with model 2 training which was statistically significantly different with p = 0,010 (p <0,05).Conclution:From the results of this study it is concluded that the training of model 1 further improves the accuracy of free throw shooting rather than training model 2, Suggestion: in practice it is suggested to use training model 1 to improve the accuracy of free throw shooting.
Keywords: beef concept, push up, jogging, dumble, free throw shooting
KEBIJAKAN PENANGGULANGAN KEKERASAN TERAHADAP ANAK DI KOTA AMBON
Authors: Salamor Yonna Beatrix , Saimima Judy Marria 
Published: June 2019

Dewasa ini banyak tindak pidana yang terjadi di kalangan masyarakat. Salah satu tindak pidana yang sering terjadi, yaitu tindak pidana kekerasan terhadap anak. Tindak kekerasan terhadap anak saat ini kerap terjadi baik merupakan kekerasan secara fisik, psikis maupun seksual. Berbagai kasus kekerasan terhadap anak yang muncul kepermukaan, ternyata tidak hanya terjadi di kota-kota besar di Indonesia tetapi banyak juga terjadi di kota-kota kecil atau daerah yang mash kental dengan budaya ketimuran. Salah satu daerah yang termasuk banyak terjadi kekerasan terhadap anak adalah di Provinsi Maluku khususnya Kota Ambon. Tujuan penelitian ini adalah mengetahui bentu-bentuk penanggulangan kekerasan terhadap anak yang terjadi di Kota Ambon. Metode yang digunakan dalam penelitian ini adalah Yuridis Empiris, dimana data yang didapat tidak hanya dari penelitian lapangan tetapi juga melalui berbagai literatur. Berdasarkan penelitian, maka ditemukan dalam tahun 2017 menurut data unit PPA Polres P. Ambon & P.P. Lease bentuk kekerasan yang terjadi antara lain kekerasan terhadap anak, percabulan terhadap anak, persetubuhan terhadap anak dan aborsi dengan jumlah kasus 106 kasus.
Pengujian neuroticism sebagai moderator pada hubungan antara sensitivitas atasan dengan perilaku kerja kontraproduktif bawahan (studi kasus di PT XYZ)
Authors: Hartati Tri 
Published: June 2019

Penelitian ini bertujuan untuk mengetahui peran neuroticism sebagai moderator pada hubungan antara sensitivitas atasan dengan perilaku kerja kontraproduktif-organisasi. Karyawan menunjukkan perilaku kerja kontraproduktif yang tinggi, indikatornya adalah datang terlambat, menggunakan waktu kerja untuk kepentingan pribadi, memperpanjang waktu istirahat melebihi yang ditentukan. Perilaku kerja kontraproduktif merupakan perilaku sukarela yang melanggar norma/aturan organisasi atau aturan anggota-anggotanya, atau keduanya. Sensitivitas atasan yaitu perilaku memahami, perasaan tulus, dan kesiapan menolong yang ditunjukan oleh atasan kepada bawahannya. Neuroticism yaitu suatu kecemasan, tidak aman, kesadaran diri, dan temperamental, dengan dasar perilaku seperti cemas, gelisah, dan ketakutan yang tidak rasional. Sampel dalam penelitian ini sebanyak 123 partisipan. Tehnik pengambilan sampel dengan menggunakan simple random sampling. Metode yang digunakan untuk analis data yaitu descriptive statistic untuk mengetahui gambaran masing-masing variabel, parametrik pearson untuk menguji matriks korelasi, serta Moderated Regression Analysis (MRA) untuk menguji peran neuroticism sebagai moderator. Hasil pada penelitian ini adalah neuroticism belum terbukti dapat berperan sebagai moderator dalam hubungan antara sensitivitas atasan dengan perilaku kerja kontraproduktif. Kata kunci: Perilaku kerja kontraproduktif, sensitivitas atasan, neuroticism
Discursos desde la catástrofe. Prensa, solidaridad y urgencia en Chile, 1906-2010
Authors: Moya Rojas Pablo 
Published: June 2019

Los terremotos y sus consecuencias en el mundo y en Chile han sido trabajados en diferentes libros y artí­culos como Earthquakes: science and society (1999) y "Seismicity anomalies of M 5.0 earthquakes in Chile during 1964-2015" (2018). El libro que reseñamos se suma a la bibliografí­a que aborda esta temática, aportando con fuentes que describen los más significativos terremotos del último siglo; pero además presenta una novedosa propuesta, que contraviene las ideas de autores como Jorge Larraí­n en su libro Identidad Chilena (2001) y Rolando Mellafe en su artí­culo "El acontecer infausto en el carácter chileno: una proposición de historiade las mentalidades" (1980), en cuanto a que el fatalismo, en este caso materializado a través de los terremotos y la solidaridad, son rasgos que identifican a todo chileno.
Hubungan Antara Manajemen Waktu dan Prokrastinasi Akademik Mahasiswa PG-PAUD FKIP UNILAK
Authors: Reswita Reswita 
Published: June 2019

Mahasiswa yang mempunyai kualitas Sumber Daya Manusia (SDM) yang unggul dapat ditunjukkan dengan perilaku disiplin, kreativitas, maupun etos kerja yang tinggi dalam mengerjakan tugas dan kewajibannya selama mengikuti proses pembelajaran di perguruan tinggi. Apabila seorang mahasiswa memiliki konsep belajar yang baik maka seorang mahasiswa tidak akan melakukan penundaan dalam melaksanakan kuliahnya. Namun sebagian mahasiswa masih melakukan penundaan dalam tugas akademiknya yang dikenal dengan prokrastinasi akademik. Banyak ahli berusaha memberikan penyelesaian bagi masalah prokrastinasi. Beberapa ahli atau penulis buku menyarankan penggunaan manajemen waktu. Dengan menerapkan manajemen waktu diharapkan ada manfaat yang bisa diperoleh oleh mahasiswa. Penelitian ini bertujuan untuk mengetahui hubungan antara manajemen waktu dengan prokrastinasi akademik mahasiswa PG-PAUD FKIP UNILAK semester 6 tahun 2017/2018 yang berjumlah 29 orang. Penelitian ini merupakan penelitian korelasi. Data dikumpulkan dengan menggunakan angket dan dianalisis menggunakan analisis korelasi dengan bantuan program statistical package for social sciences (SPSS) for windows versi 21. Hasil penelitian menunjukkan bahwa terdapat hubungan antara manajemen waktu dan prokrastinasi akademik mahasiswa dengan taraf signifikansi 0,022.
Economic-geographical study of Сhina in the domestic geographical literature
Authors: Aguirrechu A. A. , Mironenko K. V. 
Published: June 2019

The paper provides an overview of the economic and geographical studies of China carried out in our country. There are several stages of the formation and development of this area of China country studies. The origin of research dates back to the early 1930s, when China research was national interests of our country. The main period of study of this country by domestic economic geographers fell down in the 1950s — on the one hand, the period of the most favorable relations between the USSR and China, on the other — the period of the maximum flourishing of regional studies in our country. The cooling in political relations between the countries in the first half of the 1960s dramatically reduced the interest of economic geographers in Chinese studies, although Oriental studies in the field of humanities continued. Subsequent periods are associated with the resumption of economic and geographical research in China, but in much lesser amount, which is particularly due to the general reduction trend in regional studies.