bluuebunny/crossref_metadata_2025 huggingface dataset:
Student paramedic views of an international clinical and cultural learning experience
Authors: Delisle Brenda , Ebbs Phillip
Published: August 2018

Background:

Universities are now frequently exploring international placements and learning experiences for paramedicine students. This has given rise to questions about the quality and meaningfulness of overseas student experiences within the paramedic curriculum.

Aim:

This study investigates whether a university-organised overseas trip provided a useful clinical and cultural learning experience for undergraduate paramedicine students.

Methods:

A 60-question survey was administered to participants, with questions chiefly focusing on clinical and cultural experiences during the overseas trip. Statistical software was used to analyse continuous and categorical survey data.

Findings:

This international trip appears to have provided a very useful cultural learning experience, but a sub-optimal clinical learning experience for students (even despite child births, emergency room presentations and blood-draws).

Conclusions:

A validated survey instrument which builds upon current knowledge and literature could be used more widely to evaluate and better understand the dimensions of quality in overseas paramedic student placements.
A pre-hospital focus on rhabdomyolysis in elderly falls
Authors: Murdoch Samantha
Published: August 2018

More than a quarter of ambulance call-outs relate to elderly falls. Immobility following a fall can cause muscle to break down which can lead to rhabdomyolysis—a life-threatening condition that can be easily overlooked in pre-hospital care. Samantha Murdoch argues the need for training and education around this lesser-known condition
Measuring blood pressure and monitoring patterns
Authors: Thompson Sally
Published: August 2018

In each issue, the paramedic education team at Edge Hill University focuses on the clinical skills carried out by paramedics on the frontline, highlighting the importance of these skills and how to perform them. Here, Sally Thompson discusses the importance of monitoring blood pressure trends in acutely ill or injured patients
Curcumin induces apoptosis in trophoblast model cell line
Authors: Nurseta Tatit , Irwanto Yahya , Wiyasa I W.A. , Rahajeng Rahajeng , Imelda Imelda , Ratnawati Putu A.R.
Published: August 2018

Background: Several studies have reported that curcumin exerts chemopreventive effects in various type of cancers, through several mechanisms, however, the effect of curcumin on carcinogenesis in patients with hydatidiform mole has not yet been investigated. This study was conducted to evaluate the effect of curcumin on apoptosis, proliferation, and nuclear translocation of endothelial nitricoxide synthase in trophoblast cells induced by estradiol in complete hydatidiform mole (CHM).Methods: In this in vitro study, trophoblast cells were divided into six groups, the control group (trophoblast cells were exposed to 100 pg/mL of 17-β estradiol) and the treatment group (trophoblast cells were exposed to 100 pg/mL of 17-β estradiol in the presence of curcumin with doses: 50, 100, 200, 400, and 800 µM). At the end of study, the cell proliferation was analyzed using MTT assay and apoptosis with TUNEL test in each group thropoblast cell. eNOS translocation was assayed using confocal laser scanning microscopy at the various dose of curcumin.Results: Curcumin at the doses of 200, 400, and 800 µM significantly decreased the proliferation and increased the apoptotic index in curcumin-treated group compared to those in the control group (p<0.05). All doses of curcumin treatment significantly decreased the nuclear eNOS expression compared to that in the control group. The three highest doses of curcumin increased cytoplasmic eNOS expression compared to that in control group.Conclusion: Curcumin inhibits the proliferation and modulates the apoptosis of trophoblast cells induced by estradiol in CHM involvement.
Use of 2D and multislice transperineal ultrasonography to describe the degree of perineal laceration following vaginal delivery
Authors: Santoso Budi I. , Djusad Suskhan , Hakim Surahman , Moegni Fernandi , Meutia Alfa P. , Priyantini Tyas
Published: August 2018

Background: Perineal tear is the most common complication after vaginal delivery. Pill-rolling test is a widely used clinical evaluation method to determine the degree of perineal tear. However, the evaluation results of anal sphincter complex (ASC) differ between clinical examination and 2D/multislice transperineal ultrasonography (TPUS). This study aims to describe measurement variation between these modalities.Methods: This cross-sectional study was conducted at Cipto Mangunkusumo Hospital from November 2015 to May 2016. Subjects were primiparous women after vaginal delivery. Clinical examination using pill-rolling test was performed to determine the degree of perineal laceration. Suture was conducted accordingly. The subjects were subjected to 2D/multislice TPUS 72 hours after delivery to evaluate the integrity of internal and external anal sphincters. Data were collected and analyzed to determine compatibility between these examinations.Results: Among 70 prospective primiparous women, five were excluded due to unavailability to undergo 2D/multislice TPUS 72 hours after delivery. The mean duration to perform 2D/multislice TPUS was 4.5 minutes, and pain was tolerable during the examination. The compatibility values of clinical examination with 2D and multislice TPUS were 0.98 and 0.93, respectively, with Cohen’s kappa of 0.92 (95% CI 0.81–1.00) and 0.79 (95% CI 0.58–0.99), respectively.Conclusion: Clinical examination is compatible with 2D/multislice TPUS for determining the degree of perineal tear after vaginal delivery.
Overexpression of p53 in extra large (more than 10 cm) hepatocellular carcinoma
Authors: Lalisang Toar J.M. , Moenadjat Yefta , Siregar Nurjati C. , Stephanie Marini
Published: August 2018

Background: Extra large hepatocellular carcinoma (HCC) of >10 cm managed in our center shows a specific characteristic in tropical regions. This type of HCC exhibits distinct p53 expression. This study aimed to determine the association between p53 expression and tumor size and behavior. Method: Subjects with HCC who underwent surgical resection in our hospital during 2012–2015 were enrolled in thisstudy. Subject’s characteristics, tumor size, histopathology findings, and tumor behavior were variables observed. Animmunohistochemical study on p53 expression was conducted to determine its association with those variables.Results: This study involved 38 subjects with tumor size ranging from 3 cm to 25 cm in diameter and 20 subjects (52.8%) with tumor size ranging from 10 cm to 25 cm in diameter. Only 13 samples were evaluated for p53 expression. Five subjects with >10 cm (extra large) tumor showed highly/overexpressed p53 (intensity>50%), two subjects with strong p53 expression (intensity>5%–50%), and two subjects with weak expression. Three subjects with <10 cm (large) tumor showed strong expression of p53 (5%–9%) and a subject with 3 cm tumor showed weak p53 expression (<5%). Highly expressed p53 was found in patients with microvascular invasion, inflammatory response, mitosis, and necrosis.Conclusion: Overexpression of p53 was associated with extra large and poorly differentiated HCC.
Warning sign as a predictor of dengue infection severity in children
Authors: Adam Abdullah S. , Pasaribu Syahril , Wijaya Hendri , Pasaribu Ayodhia P.
Published: August 2018

Background: Dengue has emerged as a global public health problem, about 500,000 affected patients of 50–100 million cases will develop severe dengue infection. Therefore, early identification of severe dengue infection symptoms can save a patient’s life. The 2009 WHO dengue infection classification proposed seven warning signs to identify the risk of severe dengue. This study was conducted to predict the severity of dengue infection based on the number of warning signs.Methods: This was a diagnostic study conducted with a retrospective analytic observation of patients admitted to Adam Malik hospital with a diagnosis of dengue infection from January 2014–May 2016. The association between warning signs and severe dengue infection was analyzed using logistic regression. We also analyzed the sensitivity, specificity, positive predictive value and negative predictive value.Results: Of 140 patients who fulfilled the research criteria were collected from the medical records. The patients were classified as severe dengue (n=28) and nonsevere dengue (n =112). The warning signs that were associated with severe dengue were persistent vomiting (p<0.05, OR 31.9, 95%CI), fluid accumulation (p<0.05, OR 22.4, 95%CI), mucosal bleeding (p<0.05, OR 9.1, 95%CI), lethargy (p<0.05, OR 43.1, 95%CI). After analyzing the diagnostic tests, the combination of three or more warning signs showed that sensitivity of 92.9%, specificity of 78.6%, positive predictive value of 52%, negative predictive value of 97.7% was found to be associated with a severe dengue infection.Conclusion: The combination of three or more warning signs showed a high sensitivity and specificity for predicting a severe dengue infection.
Laser-written integrated platform for quantum storage of heralded single photons
Authors: Seri A. , Corrielli G. , Lago-Rivera D. , Lenhard A. , de Riedmatten H. , Osellame R. , Mazzera M.
Published: August 2018

Efficient and long-lived interfaces between light and matter are crucial for the development of quantum information technologies. Integrated photonic solutions for quantum storage devices offer improved performances due to light confinement and enable more complex and scalable designs. We demonstrate a novel platform for quantum light storage based on laser written waveguides. The new adopted writing regime allows us to attain waveguides with improved confining capabilities compared to previous demonstrations. We report the first demonstration of single-photon storage in laser written waveguides. While we achieve storage efficiencies comparable to those observed in massive samples, the power involved for the memory preparation is strongly reduced, by a factor 100, due to an enhancement of the light–matter interaction of almost one order of magnitude. Moreover, we demonstrate excited-state storage times 100 times longer than previous realizations with single photons in integrated quantum memories. Our system promises to effectively fulfill the requirements for efficient and scalable integrated quantum storage devices.
A STUDY ON THE COMPANY VALUE OF PUBLIC BANKS LISTED IN THE INDONESIAN STOCK EXCHANGE BETWEEN 2010 – 2015
Authors: Muhajir Atok , Miyasto Miyasto , Mawardi Wisnu
Published: August 2018

Company value that tends to decline is a problem that must be addressed. This is in line with the theory of company which mentions that the goal of a company is to maximize it value. This study is aimed at analyzing the effects of Loan to Deposit Ratio (LDR), Non-Performing Loan (NPL), Income Diversification and Operational Cost and Return (BOPO) on company value, with Price Book Value (PBV) and Return on Asset (ROA) as intervening variables. The study population consists of companies listed on the Indonesian Stock Exchange between 2010 and 2015. The sampling technique employed was purposive sampling and 26 companies were sampled according to the pre-determined criteria. Analyzes were carried out using the SPSS program, with the data undergoing a statistical testing beforehand. Results from the first regression model show that LDR has positive and significant effect on ROA, BOPO has negative and significant effect on ROA, while NPL and Income Diversification does not have any effect on ROA. On the other hand, results from the second regression model show that LDR has negative and significant effect on PBV; Income Diversification has positive and significant effect on PBV, whereas NPL and BOPO do not have any effect on PBV. Statistically, this study also shows that ROA has a mediating effect on the relationship between Income Diversification and BOPO against PBV.
GLASS CEILING: SEBUAH STUDI LITERATUR
Authors: Muslim Muhamad Ihwanul , Perdhana Mirwan Surya
Published: August 2018

Nowadays, women's involvement in the workforce are continues to increase. However, the number of womens participate in the upper management are still limited. Such condition might be caused by glass ceiling phenomenon – obstacles hindering women’s career advancement. This study presents antecedents of glass ceiling phenomenon both in profit and non-profit organizations. Extensive literature review were conducted to gain conclusion on factors hindering women’s career advancement. Managerial implication and opportunity for further research were discussed.
KAJIAN PENGARUH KERJASAMA PERDAGANGAN INDONESIA – CHILE TERHADAP PENINGKATAN PERDAGANGAN INDONESIA DI WILAYAH ASIA PASIFIK
Authors: Sidabutar Victor Tulus Pangapoi
Published: August 2018

Kemitraan Trans-Pasifik (TPP) merupakan perjanjian perdagangan antara dua belas negara di daerah Asia – Pasifik dengan tujuan untuk mendorong terjadinya liberalisasi perdagangan di negara anggota terutama dalam hal penetapan tarif, proteksi perdagangan dan persamaan perekonomian. Indonesia menunjukkan keinginannya untuk masuk kedalam TPP guna memperluas pangsa pasar ekspor Indonesia. Indonesia saat ini telah memiliki kerjasama perdagangan dengan hampir dengan seluruh negara anggota TPP, kecuali dengan Chile salah satunya. Analisa dilakukan dengan menganalisa data perdagangan Indonesia-Chile di tahun 2011 hingga 2015; menganalisa hasil perdagangan Chile dengan negara Kanada, Singapura dan Vietnam dan juga berdasarkan hasil simulasi yang dilakukan Petri (2016).  Hasil simulasi menunjukkan bahwa kerjasama TPP dapat menguntungkan negara yang terlibat didalamnya, terlihat dengan meningkatnya PDB dari negara anggotanya. Selain itu, TPP juga meningkatkan lebih banyak arus investasi masuk daripada investasi keluar terutama investasi masuk yang berasal dari negara dengan perekonomian yang tinggi. Tetapi perjanjian perdagangan bebas (FTA) Indonesia dengan negara mitra dagang utama juga harus dipertimbangkan sebelum Indonesia bergabung dalam TPP.
Developing the rotational synchronous teaching (RST) model: Examination of the connected classroom climate
Authors: Lee Yanhong , Yang Harrison Hao , MacLeod Jason , Dai Jinjun
Published: August 2018

The multiple synchronous smart classroom learning environment (MSSC) is an alternative educational context that describes several active learning classrooms, connected through synchronous broadcasting technology. MSSC provides conceptually new capabilities to maximise both student learning and instructor efficiency. However, MSSC lacks an empirically validated instructional model, which limits effectiveness, particularly in relation to student interaction. Therefore, this study designed, developed, and implemented the rotational synchronous teaching (RST) model: a practical instructional approach for simultaneously teaching large student audiences, while maintaining smaller interactive classroom atmospheres. The RST model was tested in a mixed method research design that relied on survey (n = 305) and interview (n = 8) data of college students collected at the conclusion of the spring semester 2017. The effects of this RST model on student connected classroom climate obtained results matching previous research in traditional face-to-face classroom contexts. These preliminary findings indicate that the MSSC can effectively cultivate social interaction among students in a large instructional context with an approapriate instructional approach. The results of this study also suggest the need to expand future research toward comparative methodologies that examine additional variables, including academic achievement.
Foreign in London: Diaspora as a traumatic experience in Samuel Selvon’sThe Lonely Londoners
Authors: Flajšarová Pavlína
Published: August 2018

Stuart Hall inBlack Britainclaims that “the experience of black settlement has been a long, difficult, sometimes bitterly contested and unfinished story.” Such is the case in Samuel Selvon’s 1956 novelThe Lonely Londoners, which depicts the trauma of diaspora for West Indian newcomers. People from the Caribbean who settle in the “mother country” experience total disillusion because they are not welcomed by the white British. The paper focuses on the influence British politics has had upon the Windrush generation of immigrants. It shows how the characters cope with animosity, loneliness and the sense of failed promise that all lead to the traumatic experience of living in total isolation in a foreign city far from their native islands. The immigrants face xenophobia, suffer from being the “other”, invisible and segregated. They try to cope with the trauma of “not belonging anywhere”, i.e. being uprooted from their homes in the West Indies. In the aftermath of the decolonization process they fail to come to terms with their new living conditions, and as there is no return ticket to the Caribbean, they experience the ever-growing trauma of unsuccessful resettlement.
Iconization of the deathly affliction in Andersen’s Fairytales1
Authors: Čechová Mariana
Published: August 2018

The contribution focuses on a thematological interpretation of the existentials of misery and extinction, using a corpus of selected fairy tales by Hans Christian Andersen. In explaining the specificity of Andersen’s concept and presenting life’s givenness (the parameters of being-in-the-world) he verifies the relevance of several existentials which were explained by Heidegger in connection with the use of factual existence (Dasein). The use of existentials as real facts in describing a textual model of the world is justified by the thematic concept as a proposition of modes of existence by Ricouer.
Oxidation and Hydrogen Behaviur in Zr-2Mn Alloy
Authors: Zienkiewicz N. , Paradowska J. , Serbiński W. , Gajowiec G. , Hernik A. , Zieliński A.
Published: August 2018

The purpose of the present research was to determine the oxidation and hydrogenation behavior in the new Zr-2Mn alloy. The oxidation of alloy was performed at temperatures between 350°C and 900°C for 30 minutes. The hydrogen charging was made for 72 h at a current density 80 mA/cm2. The charged samples were heat treated at 400°C for 4 h to obtain a uniform hydrogen profile content across the sample. The oxidation resulted in an appearance of non-uniform oxide layers of thickness increasing with temperature. The surface damage was observed at higher temperatures 700 and 900°C. After charging with hydrogen followed by annealing no hydrides were found. The observed effect is evidence that the oxide layers may form effective barriers against hydrogen diffusion even if they are partially degraded. The absence of hydrides or hydride cracking may be caused by an absence in Zr-Mn alloys of such phase precipitates, which may trap diffusive hydrogen and initiate the hydrides. The positive influence of manganese on the formation of the thick oxide layer and relative resistance to delayed hydride cracking may be attributed to its affinity of oxygen, the ability to form thick and compact oxide layers during oxidation, the formation of solid solution in zirconium and no precipitates enhancing nucleation of hydrides.
Wear Resistance of the Cermet Cutting Tools After Aluminum (Al+) and Nitrogen (N+) Ion Implantation
Authors: Morozow D. , Narojczyk J. , Rucki M. , Lavrynenko S.
Published: August 2018

In the paper, the issue of the cermet cutting tools wear resistance was addressed. The tool inserts made out of cermet composites were exposed to the ion implantation with ions of nitrogen N+ and with combination of nitrogen N+ and aluminum Al+ ions. In order to assess the impact of the ion implantation, the samples of stainless steel EZ6NCT25 were turned with the standard cutting tools and with the inserts after ion implantation. The results in general confirmed better wear resistance of the ion implanted inserts. In particular, they performed 20-40% smaller friction. After some time, when the destruction of the implanted surface layer took place, the friction coefficient rose up to the value typical for non-implanted inserts. For the implanted inserts, the wear index VB appeared to be lower, and even visual assessment revealed distinguishably smaller wear than in case of tools without ion implantation.
Reflective practice tools in ESL: Two retrospective evaluations
Authors: Unlu Zuleyha , Kulekci Erkan
Published: August 2018

This article evaluates the use of reflective practice (RP) tools by focusing on the main critiques on RP. In the literature, RP has often been criticised for its design-related problems, RP’s being directed by problem identification purposes rather than empirical data, and RP practitioners’ loss of contact with their discourse communities due to the undue emphasis on practical knowledge. Therefore, this article suggests methodological and data triangulation of RP tools as well as highlighting the community of inquiry framework to overcome the aforementioned problems While doing this, the authors reflect on their own RPs, both of which were conducted at a refugee centre in Philadelphia, USA. In this examination, the critical role of reflective tools is highlighted.
Schooling and Cohort Size: Evidence from Vietnam, Thailand, Iran and Cambodia
Authors: Falaris Evangelos M. , Thai Thuan Q.
Published: August 2018

In many developing countries, the annual number of births has reached a peak in recent years and has declined since that time. We investigate how the schooling that individuals complete responds to the changes in the number of potential labor market competitors implied by changes in the annual number of births. We use census data from Vietnam, Thailand, Iran and Cambodia and document a similar pattern in all of them: holding other characteristics constant, individuals born during the upswing of the demographic cycle complete less schooling than individuals born during the downswing of the demographic cycle. Our estimates suggest that individuals' schooling choices mitigate the possibly adverse economic effects of the demographic cycle. For developing countries that are at earlier phases of the demographic transition, our study lets us predict schooling levels as the demographic transition moves forward.
The first loess map and related topics: contributions by twenty significant women loess scholars
Authors: Fitzsimmons Kathryn , McLaren Sue , Smalley Ian
Published: August 2018

Women scholars have contributed to the study of loess. Charlotte Hibbert made the first map of loess distribution and there were many subsequent achievements. The twenty people selected represent a subjective choice; there is no overall biobibliographical metric that can be applied. The twenty are mss: Hibbert, Owen, Swineford, Conea, Marković-Marjanović, Fotakieva, Ivanova, Davin, Coude-Gaussen, Wintle, Matviishina, Gerasimenko, Billard, Grabowska-Olszewska, Sycheva, Mavlyanova, Rendell,Łanczont, Klukanova, Morozova. The INQUA Loess Commission provides a convenient temporal divide, and also a divide in style of loess investigation: early studies pre-Commission; Loess Commission activities; modern scientific loess research post-Commission (after 2003).

Topics

Hypotheses of loess formation, aeolian vs. fluvial, aeolian vs. in-situ, desert loess, Danubian loess, INQUA Loess Commission, Dating techniques, hydroconsolidation, loessification, Ukraine, Russia, Central Asia, loess structure.

The paper by Jelena Marković-Marjanović in the 1961 INQUA Loess Symposium was one of the key pioneering documents in the development of loess stratigraphy; it should be more widely recognized.
Cold Plasma: The Way to Improve the Repeatability of Sald ICP-MS Analysis
Authors: Stiborek Marek , Preisler Jan , Shekargoftar Masoud , Kanickŷ Viktor , Kelar Jakub
Published: August 2018

This work deals with the preparation of model biological microsamples for Substrate-Assisted Laser Desorption Inductively Coupled Plasma Mass Spectrometry (SALD ICP-MS). This technique provides the direct and fast analysis of liquid samples deposited onto polyethylene terephthalate (PET) plates (substrates) in the form of dried droplets with minimal sample preparation and submicrolitre sample volume requirements. Furthermore, SALD ICP-MS allows for the direct analysis of samples in organic solvents, which cannot be directly nebulised to ICP-MS. These benefits are, however, balanced out by the low degree of repeatability of the assay, which is typically about 30%. One of the approaches to increase the repeatability is a modification of the substrate surface by Diffuse Coplanar Surface Barrier Discharge (DCSBD) with the addition of an internal standard to the sample. Using this approach, a relative standard deviation (RSD) of less than 10% for model biological samples can be achieved. The only limitation of this technique is the occurrence of the so-called “aging effect”, i.e. the gradual return of the modified physicochemical surface properties to their original state
Smart Battery Charging Station for ElectricVehicle Using Half Bridge Power Converter
Authors: Ananthapadmanabha B. R. , Maurya Rakesh , Arya Sabha Raj , Chitti Babu B.
Published: August 2018

This paper presents a concept of smart charging station using bidirectional half bridge converter for an electric vehicle. This battery charging station is useful for charging applications along with harmonics and reactive power compensation in a distribution system. A filter which is adaptive to the supply voltage frequency is used for the estimation of the 50 Hz component of load current. Due to additional features of vehicle charger, associated with the power quality improvement, there will be a drastic reduction in the current drawn from utility to meet the same load demand. The charging station presented in this paper is termed as smart with several function. The proposed smart charger is able to improve power quality of residential loads or other loads, not only during charging/discharging of the vehicle battery, but also in the absence of the vehicle. The Simulink model is developed with MATLAB software and its simulation results are presented. The level of current distortion during charging and and discharging mode is recorded 1.6 % and 2.4 % respectively with unity supply power factor during experiments. The performance of converter is evaluated during charging modes both in constant current (CC) and constant voltage (CV) modes.
Starch behaviour in potato at temperatures close to cellular membrane breakdown
Authors: Blahovec Jiří , Kouřím Pavel
Published: August 2018

A combined thermal analysis (including a dynamic mechanical analysis and a dielectric thermal analysis) was applied to the cortex tissues of long-stored potatoes in the temperature range of 30-90°C, with the constant air relative humidity of 90%. Two heating rates, i.e. 1°C min−1 and 0.5°C min−1, were used for temperature scanning. The obtained results were found to differ in the inspected temperature range, indicating either a different mode of drying or differences in the starch gelatinization mechanism, the latter being usually controlled by water availability in contact with starch in both tests. The observed results indicate new possibilities in the cooking strategies that are usually applied to potatoes.
Effect of self-heating on the processing quality of rapeseed
Authors: Gawrysiak-Witulska Marzena , Siger Aleksander , Rudzińska Magdalena , Stuper-Szablewska Kinga , Rusinek Robert
Published: August 2018

The paper concerns the effect of adverse thermal phenomena on the processing quality of rapeseed. A measurement station was developed for the study, composed of a model cylindrical silo with a capacity of 3.85 m3, which was filled with seeds of winter rape cv. Suzy (2.5 t). In the conducted experiment, the silo was filled with three layers of seeds, the bottom layer witha moisture content of 7%, the middle layer with a moisture content of 12.7%, and the top layer with a moisture content of 7%. The experiment was carried out with temperature and humidity sensors in the vertical and horizontal axes, placed in a distance of 0.15 m from one another. The increase in temperature in the intergranular space measured during the self-heating pheno-menon can be divided into two stages: I – slow (up to approx. 150 h)and II – significant (from 150 h, 2-3ºC per day). As a result of the development of the self-heating phenomenon, the processing quality of rapeseed deteriorated. Indeed, under increased temperature the quality changes were so significant that they rendered the seeds unfit for any kind of consumption purposes.
Viscoelastic response of apple flesh in a wide range of mechanical loading rates
Authors: Stropek Zbigniew , Gołacki Krzysztof
Published: August 2018

The cylindrical samples of ‘Beni Shogun’ apples cultivar in a range of deformation velocities from 0.0002 to 1 m s−1 were studied using stress relaxation tests. In the work, experimental courses of the force response were described via the Maxwell model, and the effects of deformation velocity on the Maxwell model parameters as well as the maximum and residual force were determined. The maximum force increased with the increase of the deformation velocity, which proved the response of apple flesh to be of viscoelastic nature. The residual force described the state of the material after the strain and was much higher under the quasi-static than impact loading conditions. The three relaxation times decreased with the increasing deformation velocity. For the shortest relaxation time (order of magnitude 0.1 s) there was a rapid decrease in the velocities under the quasi-static loading conditions and it remained on a steady and low level under the impact loading conditions. A definite limit was observed between the medium relaxation time (order of magnitude 1 s) for the lowest deformation velocity of 0.0002 m s−1 and the other relaxation times obtained at higher deformation velocities. The values of the longest relaxation time (order of magnitude 100 s) were much larger under the quasi-static than the impact loading conditions.
Effect of biochar on the unsaturated hydraulic conductivity of two amended soils
Authors: Villagra-Mendoza Karolina , Horn Rainer
Published: August 2018

Water and solute transports in the vadose zone depend on the distribution, size, shape and configuration of the pores. They affect the soil hydraulic properties and, consequently, the directly related processes such as water storage, infiltration, groundwater recharge, and also erosion and runoff. Soils amended with biochar are prompt to improve their physical and hydraulic properties. Biochar addition alters not only porosity, the water retention pattern and the derived pore distribution, but also the hydraulic conductivity under saturated and unsaturated conditions. In our work, two different doses (2.5 and 5% dry wt.) were added to two textured soils (sand and sandy loam). The unsaturated hydraulic conductivity and saturated hydraulic conductivity were measured under laboratory conditions. The obtained results show the positive effect of biochar on the hydraulic functions. For the sandy soil, the higher the dose of biochar, the more constant and relatively higher is the hydraulic conductivity up to - 40 kPa. At less negative matric potentials (< -10 kPa), the unamended sandy loam soil showed a slightly higher unsaturated hydraulic conductivity, compared to the amended soils. These results underline that biochar addition enhances the transport of water under unsaturated conditions by reducing the formation of larger pores while also intensifying the finer inter-particle pore formation.
Influence of straw incorporation-to-planting interval on soil physical properties and maize performance
Authors: Dahri Imtiaz A. , Tagar Ahmed A. , Adamowski Jan , Leghari Naimatullah , Shah Ali R. , Soomro Shakeel A.
Published: August 2018

Long-term soil disturbance due to regular tillage destroys the soil structure, particularly by reducing the soil organic matter content. This, in turn, can lead to declining crop yields. This study assessed the influence of wheat (Triticum æstivum L.) straw incorporation and timing prior to seeding at 6 Mg ha−1 (S+), relative to no straw (S−), on maize (Zea mays L.) growth and yield parameters, as well as on soil characteristics. There were four intervals between straw incorporation and maize seeding, i.e. 60, 45, 30 and 15 days before sowing. Compared to the S− (control), soil dry bulk density increased (p ≤ 0.05) under all S+ treatments. A significantly greater proportion of undesirable small aggregates (<0.5 mm), and a lesser proportion of desirable medium sized (0.5-8.0mm) aggregates, occurred under S− treatment, as compared to

$S_{60}^ +$

treatment. A similar, but less pronounced, trend was observed under

$S_{45}^ +$

treatment. This trend was also evident for the

$S_{30}^ +$

and

$S_{15}^ +$

treatments. Generally, incorporation of straw 60 days prior to sowing led to achieving the best soil structure in terms of aggregation. Compared to S−, the soil organic matter showed a weakly significant (0.05 ≤ p ≤ 0.06) increase under straw amendment. Seedling emergence, plant height, cob length, the number of grain rows per plant, the number of grains per cob, as well as 1000 grain weight and yield were the highest under

$S_{60}^ +$

, and the lowest under S−. The present study suggests that more research is necessary over longer time periods between straw incorporation and seeding on different crops, and in different soil types, in order to study the effects on soil properties, and on the growth and yield of crops.
Implementation of Modular Trucks into Road Transport
Authors: Muślewski Łukasz , Landowski Bogdan , Woropay Maciej , Migawa Klaudiusz
Published: August 2018

In this article, an analysis of modular truck application in the road transport in Poland has been made. Terminology has been unified. Classification and law regulations applicable in different European countries and all over the world have been discussed. An analysis of existing solutions has been made and an optimal variant for road freight transport, including the condition and parameters of the road infrastructure in Poland, has been proposed. The study presents initial conceptual assumptions of this project as well as advisability of using these modular trucks, on the basis of a selected research object – the analyzed transport company. On this example, an analysis of costs and potential profits to be generated from transport services performed using the proposed modular trucks and with reference to costs borne by the investigated company with the use of currently operated transport means, has been made.
Numerical Simulation of the Process of a Technical Object State Changes
Authors: Landowski Bogdan
Published: August 2018

The article presents a construction method and an example of a model of a technical object operation process as well as the main stochastic assumption which is a mathematical model of an object state changes. The model of the operation process was built using an analysis of the state space and operation-related events of the analyzed technical objects. An example of numerical simulation of the technical object state change process as a tool to be used to support the analysis of the considered process. Numerical simulation of the stochastic process being a model of a technical object state change process makes it possible to determine the process characteristics impossible to determine in an analytical way.
Identification Method of Content Changes of Information Contained Inside Files
Authors: Szleszyński Artur
Published: August 2018

The thesis shows the use of message hash function for integrity attribute change identification in sensitive information asset. Changes introduced to file content may suggest confidentiality attribute violation. It has been verified in what way random changes introduced into file content affect function. The minor number of bytes changed in comparison to file size that was assumed, derives from potential benefits for the attacker. Large number of changes in the file may suggest the situation of encrypting it. Such an action leads to accessibility attribute violation
Verification Postdiagnostic Decisions Tested of Artillery Fuses
Authors: Ampuła Dariusz
Published: August 2018

A statistical analysis of multiyear laboratory test results and dynamic tests chosen type of artillery fuses is presented in this article as the aim to testify influence of natural ageing process on quality indicators during long - time exploitation. The influence of exploitation time on taking shooting test decisions relating the quality of lots after conducted laboratory tests and on different inconsistencies classes which stepped out during these tests were analysed. The analysis of exploitation time influence on diagnostic decisions taking after conducted shooting tests and on occurrence inconsistences in the establish classes were also presented. The conducted statistical analysis suggested assumption, that there is possibility of changing of estimate module in the test’s methodology applied until now. The modification of this estimate module will not influence negatively on the quality of further diagnostic tests conducted, and it will not influence negatively on correct evaluation of prediction process tested elements of ammunition which the artillery fuses are. Performed the statistical analysis can be essentially relevant to modify tests methodology of the artillery fuses.
Assessment of the Fuel Thermal Degradation Process on the Basis of the Deposit Content Analysis
Authors: Sarnecki Jarosław , Gawron Bartosz , Głąb Jadwiga
Published: August 2018

The publication subject is the issue related to the assessment of phenomena occurring during the jet fuel thermal degradation process. The research in this article was carried out on a specialised laboratory station, according to the author’s own methodology. The assessment of the fuel degradation process was conducted on the basis of an analysis of the content of deposits collected on filters with a diameter of 0.8 µm and 3.0 µm. The filters were additionally analysed under a microscope. The results indicate that a degree and intensity of the fuel thermal degradation process are affected by the technology of the tested fuel and the test temperature. The article was prepared on the basis of the results obtained within the framework of the research project No. 2011/01/D/ST8/06567 funded by National Science Centre.
Mobile Composite Airfield Element of Security and Reliability in Air Transport
Authors: Wesołowski Mariusz , Barszcz Piotr , Blacha Krzysztof
Published: August 2018

The problem of safety of the flight operations will be valid as long as there will be aviation, both civil and military. Ensuring the safety was, is and will be one the most important issues in the functioning and development of aviation.

The safety of flight operations affect the implementation of all the elements involved in this process, which can be summarized in three groups, namely: man, the aircraft and the environment, including airfield pavements. Airfield pavements are elements that can be intentionally destroyed by military action as well as a result of random unexpected situation (failure, catastrophe, natural disaster). The reconstruction of airfield pavements in crisis situations and in military operations should enable to restore the operational availability of destroyed elements in the shortest possible time.
Thermal Resistance of Airfield Concrete Pavements and Consequences for the Maintenance Thereof
Authors: Linek Małgorzata , Piotrowska-Nowak Patrycja , Nita Piotr
Published: August 2018

The project presents the approximate method to specify temperature changes which may cause and intensify the pavement slabs destruction. Criteria of thermal concrete resistance in case of pavement structure were specified. Defining the acoustics performance, the degree of changes occurred in surface layer and changes in basic mechanical parameters as criteria of pavement thermal condition were suggested. The process of cement concrete damage in case of pavement structure, as a result of combined temperature changes and vehicle traffic was also discussed. Criteria of fragile damage of concrete slab and allowable stress of concrete layer in case of pavement structure were described. Types of heat flow within the pavement were discussed and associated with the occurred damages. The destruction process of concrete pavements under the influence of temperature was presented. The publication contains the proposal of reducing the effects of the aforementioned factors on the range of the occurred stress. The analysis does not include the complex issue of thermal stress within concrete pavement, caused by hot exhaust gas stream.
A-priori Estimates Near the Boundary for Solutions of a class of Degenerate Elliptic Problems in Besov-type Spaces
Authors: El Baraka Azzeddine , Masrour Mohammed
Published: August 2018

In this paper, we give a priori estimates near the boundary for solutions of a degenerate elliptic problems in the general Besov-type spaces

B

p
,
q

s
,
τ

$B_{p,q}^{s,\tau }$

, containing as special cases: Goldberg space bmo, local Morrey-Campanato spaces l
2,λ and the classical Hölder and Besov spaces

B

p
,
q

s

$B_{p,q}^s $

. This work extends the results of [13, 2, 15] from Hölder and Besov spaces to the general frame of

B

p
,
q

s
,
τ

$B_{p,q}^{s,\tau }$

spaces.
New conformable fractional integrals of Ostrowski type using new generalized (s, m, ϕ)-preinvex mappings
Authors: Kashuri Artion , Liko Rozana
Published: August 2018

In the present paper, the notion of new generalized (s, m, ϕ)-preinvex mapping is introduced and some new integral inequalities for the left-hand side of Gauss-Jacobi type quadrature formula involving new generalized (s, m, ϕ)-preinvex mappings along with beta function are given. Moreover, some generalizations of Ostrowski type inequalities for new generalized (s, m, ϕ)-preinvex mappings via conformable fractional integrals are established. At the end, some applications to special means are given.
A bifurcation result involving Sobolev trace embedding and the duality mapping of W
1

,p
Authors: El Khalil Abdelouahed
Published: August 2018

We consider the perturbed nonlinear boundary condition problem

{

-

Δ
p

u

=

|
u
|

p
-
2

u
+
f

(

λ
,
x
,
u

)

 
in
 
Ω

|

∇
u

|

p
-
2

∇
u
.
ν

=

λ
ρ

(
x
)

|
u
|

p
-
2

u
 
on
 
Γ
.

$$\left\{ {\matrix{ { - \Delta _p u} \hfill & = \hfill & {\left| u \right|^{p - 2} u + f\left( {\lambda ,x,u} \right)\,{\rm{in}}\,\Omega } \hfill \cr {\left| {\nabla u} \right|^{p - 2} \nabla u.\nu } \hfill & = \hfill & {\lambda \rho \left( x \right)\left| u \right|^{p - 2} u\,{\rm{on}}\,\Gamma .} \hfill \cr } } \right.$$

Using the Sobolev trace embedding and the duality mapping defined on W
1,
p
(Ω), we prove that this problem bifurcates from the principal eigenvalue λ
1 of the eigenvalue problem

{

-

Δ
p

u

=

|
u
|

p
-
2

u
 
in
 
Ω

|

∇
u

|

p
-
2

∇
u
.
ν

=

λ
ρ

(
x
)

|
u
|

p
-
2

u
 
on
 
Γ
.

$$\left\{ {\matrix{ { - \Delta _p u} \hfill & = \hfill & {\left| u \right|^{p - 2} u\,{\rm{in}}\,\Omega } \hfill \cr {\left| {\nabla u} \right|^{p - 2} \nabla u.\nu } \hfill & = \hfill & {\lambda \rho \left( x \right)\left| u \right|^{p - 2} u\,{\rm{on}}\,\Gamma .} \hfill \cr } } \right.$$
A posteriori error estimates for mixed finite volume solution of elliptic boundary value problems
Authors: Benkhaldoun Fayssal , Seaid Mohammed , Mahamane Amadou
Published: August 2018

The major emphasis of this work is the derivation of a posteriori error estimates for the mixed finite volume discretization of second-order elliptic equations. The estimates are established for meshes consisting of simplices on unstructured grids. We consider diffusion problems with nonhomogeneous diffusion coefficients. The error estimates are of residual types and are formulated in the energy semi-norm for a locally postprocessed approximate solutions. The estimates are fully computable and locally efficient that they can serve as indicators for adaptive refinement and for the actual control of the error. Numerical results are shown for two test examples in two space dimensions. It is found that the proposed adaptive mixed finite volume method offers a robust and accurate approach for solving second-order elliptic equations, even when highly nonhomogeneous diffusion coefficients are used in the simulations.
Edge spread function for the paper-ink system
Authors: Itrić Katarina , Modrić Damir , Milković Marin
Published: August 2018

The importance of accurate identification of the edge spread function for the paper-ink system is closely related with the possibility of separating mechanical and optical dot gain. Our approach is based on the precise fit of the edge spread function, ESF. Namely, all of the research so far incorporates symmetric ESF, in contrast to the research reported so far, in which only the symmetric ESF has been considered¸ which is not realistic, due to the presence of dot gain. This approach, based on image analysis, allows us to identify uniquely the domain of impact of each contribution. Six different paper-ink systems are analyzed and discussed, and all of them show a satisfactory correlation with the proposed model.
Identifying Barley Genotypes for Optimum Input Conditions in the WANA Regions
Authors: Verma R.P.S. , Visioni A. , Gyawali S. , Singh M.
Published: August 2018

Barley (Hordeum vulgare L.) is an important cereal crop for its high demand for grain feed and forage/grazing for the animals as well as for human food in the WANA region under the low rainfall situations and thus creating an urgent need for developing high yielding barley genotypes. A total of 542 hulled and hulless genotypes with seven checks were evaluated at three locations with diverse agro-ecological conditions, Terbol in Lebanon and Marchouch and Allal Tazi in Morocco. The aim of this study was to understand the nature of genotype × environment interaction (GEI), quantify the genotypic variability and identify high yielding genotypes. The mixed models were fitted to evaluate heritability and predicted means to identify genotypes with specific adaptation to the locations using GGE-biplot. GEI across locations was significant for days to heading, days to maturity, plant height, spike length and grain yield. On a trial-wise analysis, days to maturity was most heritable (49 – 50% broad sense heritability on mean basis) while the grain yield was the least (5 – 13%). The genotype G427 (4812 kg/ha) at Marchouch, the check VMorales (4889 kg/ha) at Allal Tazi and G528 (6995 kg/ha) at Terbol were the highest yielding genotypes. Several hulled and hulless genotypes with higher grain yield and early flowering time in the three environments were identified for utilization by the national programs globally. The test locations, Marchouch and Allal Tazi, were found comprising one mega environment while Terbol showed maximum discrimination of genotypes for grain yield.
Correlations and Heritability of the Characters Determining the Seed Yield of the Panicle Inflorescence Forms of Alfalfa (Medicago x varia T. Martyn)
Authors: Bodzon Zbigniew
Published: August 2018

Phenotypic correlation coefficients and heritability of the characters determining seed yield of panicle inflorescence forms of alfalfa was examined. Seed yield per plant, which was positively correlated with 10 generative and morphological traits, depended upon the number of pods per panicle and the number of seeds per pod. Variability of these characters determined about 60% of the variability of seed yield. Multiple linear regression and phenotypic correlations show that simultaneous selection for increased pod number per panicle and increased seed number per pod and number of branches per panicle resulted in enhanced seed yield potential. The share of the additive genetic effects in the phenotypic variance for number of pods per panicle was low and about 23%, while for number of seeds per pod and seeds per panicle amounted to about 75-77% and 56-57% respectively.