bluuebunny/crossref_metadata_2025_split huggingface dataset:
Development of Information Models for Increasing the Evaluation Efficiency of Wireless Channel Parameters of 802.11 Standard
Authors: Mykhalevskiy D. M. , Kychak V. M. 
Published: November 2019

Abstract
The objective of the research is to develop information models in order to improve the efficiency of evaluating the parameters of the wireless channels in 802.11 standard. A feature of the information model of the wireless channel of 802.11 standard is an opportunity to evaluate the efficiency of transferring the information block taking into account the complete packet and frame transmission cycle in the event of errors in frames. In addition, the model accounts for the existence of other subscribers in the network and the mechanism of competition for the physical resource of the frequency channel. It has been established that channel efficiency is mostly affected by the presence of destabilizing factors in the channel, which lead to an increase in the number of service information and an increase in the transmission cycle due to the creation of reciprocal queries.
Optimization of the Selection Method for Reconstruction of Outworn Gas Distribution Pipeline
Authors: Koposovs A. , Bode I. , Zemite L. , Dzelzitis E , Odineca T. , Ansone A. , Selickis A. , Jasevics A. 
Published: November 2019

Abstract
Currently, problems related to the operation and exploitation of safe gas distribution networks are deepening in Latvia and Eastern Europe, as the number of outworn underground gas pipelines is steadily increasing. It should be noted that there is a rather wide choice of technology and materials for gas distribution pipeline reconstruction, while at the same time there is no universal method that equally meets all possible work requirements. Therefore, it is an urgent task to understand the operational algorithm, while choosing optimal reconstruction option, classifying and determining the criteria affecting the choice, and determining the scope of each reconstruction method. For this reason, it is necessary to develop a scientifically based methodology for selecting the optimal method for the reconstruction of outworn gas distribution pipelines. Therefore, there are the following tasks that need to be accomplished: to carry out a complex analysis of reconstruction methods and factors determining the choice of an optimal gas distribution pipeline reconstruction method as well as perform the analysis of current state and development of gas supply network; to develop an algorithm for selecting an optimal gas distribution pipeline reconstruction method based on a multi-criteria approach; to develop a mathematical model for the selection of an optimal reconstruction method and scientifically based complex evaluation procedures taking into account technical and economic criteria; to analyse the interaction of the polyethylene gas pipeline with the steel frame during the post-reconstruction process using U-shaped pipe; to develop recommendations for the optimisation of gas distribution network reconstruction programmes. As a result of these tasks, a scientifically justified methodology for the selection of an optimal method for the reconstruction of the gas distribution pipes has been developed.
Mechanisms of Electron Scattering in Uniaxially Deformed Silicon Single Crystals with Radiation Defects
Authors: Luniov S.V. , Lyshuk V.V. , Maslyuk V.T. , Burban O.V. 
Published: November 2019

Abstract
Temperature dependencies for Hall mobility of electrons for the uniaxially deformed n-Si single crystals, irradiated by the flow of electrons Ω=1·1017 el./cm2 with the energy of 12 MeV, are obtained on the basis of piezo-Hall effect measurements. From the analysis of these dependencies it follows that under the uniaxial pressure (0–0.42) GPa and (0–0.37) GPa along crystallographic directions [100] and [111], respectively, the deformation-induced increase of the Hall mobility has been observed. On the basis of the proposed theoretical model of mobility, this increase is explained by the decrease of the amplitude of a large-scale potential with an increase in the magnitude of uniaxial deformation and, accordingly, the probability of electron scattering on this potential. The slight discrepancy between the obtained experimental results and the relevant theoretical calculations at the low temperatures is due to the fact that the electron scattering on the radiation defects, created by the electron radiation, was not taken into account in the calculations. The decrease in Hall mobility of electrons along with an increase in temperature for unirradiated and irradiated silicon single crystals is explained by the growth of the probability of electron scattering on the optical phonons that are responsible for the intervalley scattering in silicon. The obtained results can be used in designing and modelling on the basis of n-Si single crystals of various electronic devices of micro- and nanoelectronics, which can be subject to the extreme conditions of action of the significant radiation and deformation fields.
Multiphase extraction of ephedrine from Pinellia ternata using bionic liquid-modified polymer
Authors: Fang Luwei , Tian Minglei , Lin Liangwen , Row Kyung Ho 
Published: November 2019

Abstract
Multiphase extraction (MPE) was applied as a developed, convenient and efficient method in separation of ephedrine from Pinellia ternata. Firstly, in order to increase the adsorption efficiency, bionic liquid-modified polymer was created. Comparing the effects of all sorbents under variables conditions, the highest amount of 5.8 mg/g can be adsorbed on dual imidazole ionic liquid modified polymer (Im-Im-Poly) in methanol/water (70:30, v/v) solution at 25°C within 30.0 min. Then the Im-Im-Poly was applied in MPE, after 7 times repetition of extraction, around 1.0 mg/g of ephedrine from Pinellia ternata was detected. After washing by water, ethanol and methanol, and elution by methanol/acetic acid (99.0:1.0, v/v), ephedrine was successfully separated.
Treatment of vinasse liquid from sugarcane industry using electro-coagulation/flocculation followed by ultra filtration
Authors: Karchiyappan Thirugnanasambandham , Delcolle Roberta D. , Goncalves Gustavo L. , Vareschini Daniel T. , Gimenes Marcelino L. 
Published: November 2019

Abstract
In this present work, vinasse, a by-product of sugarcane industry, was examined using combined treatment methods to purify it. Electrocoagulation/flocculation, ultrafiltration were applied as pre-treatment and post-treatment, respectively. The effectiveness of combined process was evaluated based on colour, turbidity and chemical oxygen demand (COD) removal. The efficiency of electrochemical reactor was investigated according to process variables such as retention time, electrode distance and electrolyte dose. From the results, the price to treat unit vinasse is found to be 2.5 US$/m3 under optimum conditions. FT-IR analysis of sludge obtained shows the results of electro-coagulation process. Ultrafiltration as post treatment experiments showed the enhanced removal efficiency of colour (91%), turbidity (88%) and COD (85%). The results showed that electrocoagulation followed by ultrafiltration is a suitable combined technique to reduce the colour, turbidity and COD from vinasse liquid.
Loessoid Soils Improvement – Laboratory Tests and Road Engineering Applications
Authors: Nguyen Cong Dinh , Burlacu Catalin , Boti Ioan 
Published: November 2019

Abstract
Moisture-sensitive or collapsible soils are materials with high porosity that under the loads transmitted by the superstructure or even under its own weight present additional settlements once the soil is saturated. This category includes loess deposits and other high silt content soils with uneven porosity. A method often used for foundation on these soils is the realization of local loessoid material compacted columns. This paper presents, on one hand, the experimental laboratory programs aiming to achieve some optimal mixtures of local material (loess) and different other materials (sand, bentonite, cement) in order to improve the values of the mechanical parameters of the soil and so, to limit the settlements. On the other hand, it presents a lot of settlement calculations for different case scenarios.
Study of the Influence of Fibres Type and Dosage on Properties of Concrete for Airport Pavements
Authors: Dicu Mihai , Matei Andreea , Voiniţchi Constantin Dorinel 
Published: November 2019

Abstract
The paper follows the potential practice of fiber reinforced concrete (FRC) as a solution for airport`s runway pavements, in order to increase the bearing strength, resulting in decreasing the height of the concrete layer that is currently used.
Experimentally, the study focuses on the properties of fiber reinforced Portland cement concrete using 3 different percentages (0.5%, 1% and 1.5% of the concrete volume) and 4 different types of fiber (for 1% percentage – hooked steel fiber 50 mm length, hooked steel fiber 30 mm length, crimped steel fiber 30 mm length and polypropylene fiber 50 mm lenght), using as reference a plain concrete with 5 MPa flexural strength.
More exactly, the study presents the change in compressive and flexural strength, shrinkage, thermal expansion factor, elastic modulus and Poisson`s ratio over fiber type and dosage.
For the highest performance concrete (7 MPa flexural strength), it has been made a study using two methods for rigid airport pavements design (general method and optimized method), and one method for evaluation of bearing strength (ACN – PCN method), which is compared to a plain 5 MPa concrete. Furthermore, the decrease in the slab`s thickness proportionally to the growth of the flexural strength is emphasized by evaluating the slab`s height for a high performance 9 MPa concrete using both design methods.
Clinical, Dermatoscopical and Laboratory Essentials of Fish Tank Granuloma
Authors: Dobrosavljević Danijela , Luković Bojana , Brašanac Dimitrije , Kosovac Olivera 
Published: November 2019

Abstract
In immunocompetent individuals Mycobacterium marinum (M. marinum) infection usually presents with localized skin lesions, better known as “swimming pool granuloma” or “fish tank granuloma” (FTG). When establishing the diagnosis of FTG, doctors encounter several problems in the clinical practice: granulomas are detected in less than two thirds of biopsies and acid-fast bacilli are identified only in a minority of cases. Majority of disseminated and aggressive FTG forms are unrecognized at the beginning, and occur in immunosuppressed patients, including organ transplant patients. Functional impairment or even amputation of the extremity, visceral involvement and lethal outcome have been reported. Although more than one thousand cases of FTG have been reported worldwide, dermatoscopy of FTG, as a diagnostic aid, has not been reported yet. Presenting the case of FTG of recent onset where, guided by dermatoscopy, microorganisms were isolated and identified from the biopsy material, we summarize the essentials of clinical and laboratory diagnostics of M. marinum infection.
Analisis Nilai Karakteristik Tokoh Utama pada Novel Haid Pertama Karya Enny M.
Authors: Tutu Muliati 
Published: November 2019

AbstrakPenelitian ini bertujuan memperoleh pengetahuan tentang karakter tokoh utama dalam novel Haid Pertama karya Enny M. Penelitian ini adalah penelitian pustaka dan merupakan penelitian deskriptif kualitatif. Sumber datanya adalah novel Haid Pertama, merupakan hasil karangan atau imajinasi Enny M. yang berwujud menjadi kenyataan dalam bentuk karya yang utuh yaitu novel. Teknik yang digunakan adalah teknik observasi tidak langsung atau biasa dikenal dengan istilah observasi berstruktur. Hasil analisis data yang dihimpun, peneliti menentukan faktor-faktor edisi atau deskripsi tokoh utama sesuai dengan bukti atau petunjuk yang ditentukan. Jadi dapat dikatakan bahwa gambaran karakter tokoh utama dalam novel Haid Pertama yaitu Diena, adalah gambaran karakter seorang tokoh yang masih gadis belia segolongan SMP yamg masih kekanak-kanakkan, selalu mencari hiburan dirinya, sedikit kasar, rajin berusaha dan suka berpenampilan menarik atau tampil beda di hadapan teman-temannya.Sifat kekasaran yang dimiliki Diena merupakan akibat kegelisahan dari keterlambatan datang haidnya, karena ia merasa cemas dan gelisah kalau nantinya Diena akan menjadi wanita yang tidak normal atau mandul, serta merasa malu terhadap teman-temannya dan orang lain. Namun sifat kekasaran Diena tidak menjadi sebuah karakter remaja yang bersifat kepribadiannya. Karena setelah berumur 14 tahun, tepat hari ulang tahunnya Diena mendapatkan hadiah ulang tahun dari yang Kuasa dengan sebuah kado yang istimewa yang selama ini Diena dambakan, yaitu haid pertamanya.Kata Kunci: Nilai, karakterisik, tokoh utama, novel Haid pertama
Kadar Lemak dan Air Pada Cookies dengan Substitusi Tepung Ubi Ungu dan Kacang Tanah
Authors: Izza Nadia Karomatul , Hamidah Nanik , Setyaningrum Yahmi Ira 
Published: November 2019

Cookies are crispy textured cakes. The main ingredient used to make cookies is wheat flour. Substitution of flour with purple sweet potato is done because purple sweet potato has content such as wheat flour. Purple yam flour contains amylose of 24.79% and amylopectin of 49.78%.This research was conducted to analyze on fat level and water content in cookies. The study design was a Randomized Block Design. The treatment level was divided into 4 groups with the proportion of purple sweet potato flour: F0 (0%: 0%), F1 (55%: 20%), F2 (45%: 30%), and F3(35%: 40 %). Fat content analysis used was the soxhlet method. There was a significant effect (ρ = 0,000) on the amount of fat content in cookies. The highest fat content found in F3 was 38.85%.Water content analysis used was the Thermogravimetric method. Statistical analysis of water content using friedmen with a reliability level of 95%. There was a significant effect (ρ = 0,000) on the amount of water content in cookies. The lowest water content was in F3 of 38.85%. The higher the addition of peanut flour, the lower the water content of cookies. Keywords: Cookies, Purple Sweet Potatoes, Ground Peanuts, Fat Levels, Water Content
SİBER GÜVENLİK POLİTİKASI: ABD, RUSYA VE ÇİN ÜZERİNE KARŞILAŞTIRMALI BİR ANALİZ
Authors: GÖÇOĞLU Volkan , AYDIN Mehmet Devrim 
Published: November 2019

Ülke sınırlarının ulusal güvenlik politikası açısından taşıdığı önem,
son yıllarda giderek hızlanan küreselleşme süreci ile birlikte azalmaya
başlamıştır. Küreselleşme ile birlikte dünyada, ülkelerin güç dağılım kanalları
yeniden şekillenmiş, asimetrik güç ilişkileri ortaya çıkmış ve ulusal güvenlik
ihtiyaçları yeniden tanımlanmıştır. Son yıllarda yaşanan teknolojik gelişmeler
siber güvenlik kavramını ortaya çıkarmış ve siber güvenlik, ulusal güvenliğin
önemli bir unsuru haline gelmiştir. İnternetin, ülkelerin sınırlarını aşan
yapısı, internet ağlarının bireysel hizmetlerin ve amaçların ötesinde devletin
kritik altyapılarında ve kamu hizmetlerinin yürütülmesinde kullanılması, gün
geçtikçe gelişen e-devlet uygulamaları, siber güvenliğin ulusal güvenlik
içerisindeki önemini daha da pekiştirmiştir.
Bu bağlamda, çalışmada ABD, Rusya ve Çin’in siber güvenlik politikaları,
özellikle bu üç ülkede yayınlanan resmi politika belgeleri temelinde
incelenmekte ve karşılaştırmalı bir analiz yapılmaktadır.
Population Structures of the Two Banded Seabream, Diplodus vulgaris and the White Seabream, Diplodus sargus Reveal New Records in Maximal Age
Authors: DARMANİN Sandra Agius , KARAKULAK F. Saadet , VELLA Adriana 
Published: November 2019

The common two-banded seabream Diplodus vulgaris and Diplodus sargus were sampled from
non-commercial fishing catches around the Maltese Islands between July 2012 and December
2017. A total of 1550 (D. vulgaris N=1204, D. sargus N=346) specimens were collected. In this
study, age, growth, length-weight relationship (LWR), condition factor (K) and relative condition
factor (Kn) were investigated. Ages ranged from 0 to 17 years for D. sargus and 0 to 16 years for
D. vulgaris. A positive allometric growth was observed for D. sargus while growth in D. vulgaris
was isometric. Average Kn was found to be 0.99 and 1.01 in D. vulgaris and 0.97 and 1.00 in D.
sargus for males and females respectively. The growth parameters of the von Bertalanffy equation
were: L∞=26.71 and 30.86 cm, K= 0.275 and 0.286 year-1
and tₒ = -2.27 and -1.61 year for all
individuals of D. vulgaris and D. sargus respectively. This study is the first reference on the LWR
equation parameters, Kn, K and Age for these species around the Maltese Islands and establishes
a new maximum age for D. vulgaris of 16 years.
Positive Association Between Cognitive Function and Cerebrospinal Fluid Orexin A Levels in Alzheimer’s Disease
Authors: Shimizu Soichiro , Takenoshita Naoto , Inagawa Yuta , Tsugawa Akito , Hirose Daisuke , Kaneko Yoshitsugu , Ogawa Yusuke , Serisawa Shuntaro , Sakurai Shu , Hirao Kentaro , Kanetaka Hidekazu , Kanbayashi Takashi , Imanishi Aya , Sakurai Hirofumi , Hanyu Haruo 
Published: November 2019

Background: Recently, many studies have investigated the association between orexin A and Alzheimer’s disease (AD). However, it remains to be determined whether the observed changes in orexin A levels are associated with pathological changes underlying AD, or cognitive function. In particular, a direct association between cerebrospinal fluid (CSF) orexin A levels and cognitive function has not been reported to date. Objective: The aim of this study was to identify whether there is a direct association between the orexinergic system and cognitive function in AD. Methods: For this study, we included 22 patients with AD and 25 control subjects who underwent general physical, neurological, and psychiatric examinations, neuroimaging, and CSF collection by lumbar puncture were enrolled. Correlations between CSF orexin A levels and CSF AD biomarker levels (i.e., levels of phosphorylated tau [p-tau], Aβ42, and Aβ42/Aβ40) were assessed to confirm the results of previous studies. Moreover, the correlation between CSF orexin A levels and Mini-Mental State Examination (MMSE) and Japanese version of the Montreal Cognitive Assessment (MoCA-J) scores were analyzed. Results: There was a significant positive correlation between CSF orexin-A levels and cognitive function (MMSE scores: r = 0.591, p = 0.04, MoCA score: r = 0.571, p = 0.006) in AD patients. Conclusion: This is the first study to our knowledge demonstrating an association between cognitive function and CSF orexin A levels in AD. Our results suggest the possibility that orexinergic system overexpression is not always a negative factor for cognitive function In AD.
Nasal CPAP complications in very low birth weight preterm infants
Authors: Guimarães A.R. , Rocha G. , Rodrigues M. , Guimarães H. 
Published: November 2019

BACKGROUND: Nasal trauma due to nasal CPAP (nCPAP) use is a commonly reported complication in infants under 1500 g of birth weight and 32 weeks of gestation. With the rise of nCPAP as the gold standard for non-invasive respiratory support, preventive measures should be considered. OBJECTIVE: To assess the prevalence and risk factors of nasal injury in very low birth weight (VLBW) preterm infants with nCPAP. METHODS: We retrospectively analyzed neonates hospitalized between 2012 and 2017, with less than 1500 g and 32 weeks of gestational age who received more than 12 hours of nCPAP. Demographic, antenatal and clinical data, along with information regarding respiratory support and nCPAP complications, were collected. We used Fischer’s classification to grade nasal trauma. RESULTS: A total of 135 infants were evaluated. Mean gestational age was 28 weeks (SD 2) and mean birth weight 1072 g (SD 239). Nasal trauma was reported in 65% of patients and it was of stage I, II and III in 49%, 16% and 1% of patients, respectively. The multivariate logistic regression revealed that the risk of trauma was greater in neonates with a longer duration of nCPAP ventilation (OR = 1.098, 95% CI: 1.055–1.142; p < 0.001) and in patients submitted to oxygen therapy (OR = 3.174, 95% CI: 1.014–9.929, p = 0.004). The median of days after nCPAP administration until the onset of an identifiable lesion was 4. CONCLUSION: Nasal trauma is a frequent complication in VLBW preterm infants using nCPAP for long periods. Preventive measures in patients who are at greater risk of skin breakdown are of major clinical importance for a better outcome.
SUHU DAN KELEMBABAN TANAH PADA TIGA PENGGUNAAN LAHAN DI KOTA SAMARINDA PROVINSI KALIMANTAN TIMUR
Authors: Assolihat Nurul Kamila , Karyati Karyati , Syafrudin Muhammad 
Published: November 2019

The different land uses influence to the soil temperature and humidity in the different soil depths. The objective of this study was to know the soil temperature and humidity in the different soil depths (5 cm, 10 cm, 20 cm, and 30 cm) in three land uses (young secondary forest, settlement area, and open area). The average soil temperature in the young secondary forest were 27.6°C, 27.4°C, 27.0°C, dan 26.9°C. The average soil temperature in the soil depths of 5 cm, 10 cm, 20 cm, and 30 cm were 27.5°C, 27.4°C, 27.0°C, and 26.8°C in the settlement area. The average soil temperature in the open area were 27.6°C, 27.4°C, 27.0°C and 26.9°C. The average soil humidity in the young secondary forest were in depth of 5 cm, 10 cm, 20 cm and 30 cm were 78.5%, 78.8%, 79.1% and 79.4%. The average soil humidity in the settlement area were 76.4%, 78.5%, 79.3%, and 80.2% in the depths of 5 cm, 10 cm, 20 cm, and 30 cm. The average soil humidity in the depths of 5 cm, 10 cm, 20 cm, and 30 cm were 69.2%, 69.6%, 70.3%, dan 70.8% in the open area.