bluuebunny/crossref_metadata_2025 huggingface dataset:
Analysis of Shape and Dimensional Deformation of the Gear Made by Digital Light Processing (DLP) Additive Technology and Measured by Industrial Tomography
Authors: Michal Dávid , Hrušecký Róbert , Görög Augustín , Milde Ján , Šimon Štefan
Published: May 2020

Industrial tomography is currently the fastest growing sector of non-destructive research. Until recently, the use of computed tomography in industry has been limited mostly to defects in materials due to lack of accuracy. Modern measuring machines combining metrology and tomography can extract information about the external geometry and volume of the part with high precision from a single scan. This article deals with the transmission gearing scanning, which is a functional component used in the mechanical transmission design. It is imperative that it does not contain internal defects that can largely render the transmission ineffective due to the strain caused by stress. The component is produced by Digital Light Processing (DLP) additive technology. The chosen production method ensures greater strength of the part. The part will be made of material call as „Proto GRY “on a FabPro1000 printer from the company 3D Systems, Inc. The production process of the model will depend on the change in the orientation of the part.
Verification of Friction Models Implemented in the Simulation Software
Authors: Evin Emil , Tomáš Miroslav
Published: May 2020

Modern approaches in simulations of sheet metal stamping processes are based on definition the friction coefficient as not constant, but the different value in different regions, considering the nature of the actual deformation process in each individual region. In this contribution the regression and analytical models to determine the friction coefficients under blankholder and on the die drawing edge by strip drawing test are presented. These models were verified by experimental strip drawing test under the same contact conditions. Zn coated steel sheets for the automotive industry were used in experiments and simulations – extra deep drawing quality DX54D and high strength steel TRIP. The results indicate, that friction coefficients are not constant and depend on the pressure on the die contact surfaces. Friction coefficients were determined also at the cup test by the regression model of drawing versus blankholding force. Conformity of friction coefficients obtained by the cup and the strip tests was confirmed. Model of friction applied in FEM simulation was verified by cup test and good conformity was found out.
Combination of an Improved 3D Geometry and Coupled Eulerian-Lagrangian Formulation for Turning Simulation
Authors: Dimopoulos Christos , Karkalos Nikolaos E. , Kundrák János , Markopoulos Angelos P.
Published: May 2020

This paper examines whether the Coupled Eulerian-Lagrangian formulation, combined with a thought-out 3D geometry, used recently in turning processes, can provide accurate simulation results. Oblique cutting cases were analyzed with the aid of commercial software for Finite Element analysis. An evaluation of the simulation results was performed by comparing the cutting forces and temperatures of the simulation with experimental turning results. Overall, simulation results with good correlation with experimental data were observed for cutting forces, including axial force distribution and temperature prediction, showing that this approach can be used in turning simulations, regardless of cutting conditions involved.
Psychological predictors of the use of complementary and alternative medicines during pregnancy within a sample of Swiss women
Authors: Blondé Jérôme , Desrichard Olivier , Kaiser Barbara
Published: May 2020

Past works have witnessed increased prevalence of complementary and alternative medicines (CAM) among women during pregnancy. This study aimed to identify psychological antecedents underlying CAM use through the exploration of various predictors. Drawing upon the literature on the use of CAM in contexts unrelated to pregnancy, this research explored the role of various predictors: perceived stress, beliefs about medicine, health locus of control (HLOC), health literacy, bullshit receptivity, and belief in conspiracy theories (CT). 376 Swiss women were recruited to complete a web-based questionnaire in which the use of different kinds of CAM was investigated. We performed hierarchical regression analyses with backward method to assess the overall variance explained by the predictors, as well as their unique contributions. We measured the number of CAM used during last pregnancy and frequency of use. Analyses showed that CAM use was positively associated with perceived stress, beliefs about medicine, internal HLOC, and belief in CT. In contrast, negative relationships were found with external HLOC, bullshit receptivity, and health literacy. By illuminating such factors, this research contributed to explaining why women may be tempted to choose CAM in place of conventional medicine, which may be of particular interest for health professionals in the planning of communication strategies aimed at limiting risks associated to their use during pregnancy.
Monitoreo de la calidad del agua del lago Chinchaycocha, mediante técnicas de teledetección espacial.
Authors: Ayala Jesús Christian , Herrera Díaz Marco Antonio
Published: May 2020

Las técnicas de teledetección o percepción remota se pueden usar para la estimación de variables de calidad del agua como clorofila, partículas suspendidas totales y transparencia de agua. Este artículo presenta algoritmos empíricos para su estimación que utilizan los datos del sensor Operational Land Imager (OLI, por sus siglas en inglés), del satélite Landsat 8/LCDM. Los datos se tomaron en el lago Chinchaycocha, pues el mismo presenta sustancias nutritivas que generan el aumento de la producción de algas y otras plantas acuáticas, las cuales deterioran la calidad del agua. Se obtuvieron ecuaciones empíricas para estimar la clorofila a partir de la relación en los valores de reflectividad, con la utilización del método de Chávez, entre las bandas 3 y 5 del sensor OLI; la transparencia mediante el disco de secchi, por la de la influencia en las bandas 3 y 4, y partículas totales suspendidas de la influencia en la banda 5; todo lo cual arrojó como resultado mapas del lago Chinchaycocha donde se muestran los valores de estos parámetros de calidad del agua. La investigación valida la efectividad de las técnicas utilizadas.
New for Lithuania aphid species of the tribe Eulachnini (Hemiptera: Aphididae, Lachninae): is there any threat to local coniferous forests?
Authors: Danilov Jurij , Havelka Jekaterina , Rakauskas Rimantas
Published: May 2020

Information about Eulachnini species in Lithuania concerns fragmentary faunistic data, therefore, their diversity, abundancy and ecological specificity is insufficiently studied. The aim of this work was to present available information on the new to Lithuania Eulachnini aphid species detected on coniferous plants in Lithuania in 2004 - 2017, with special regard to their potential impacts on forestry. Partial COI sequences (652 bp) were used to confirm morphology-based identification of new to Lithuania Eulachnini species and to investigate their genetic diversity and relationships with samples collected in other countries. Twenty-seven aphid species of the tribe Eulachnini were detected in 2004 – 2017 in Lithuania. Eight of them are reported from Lithuania for the first time: Cinara (Cinara) brauni, C. (C.) kochiana, C. (C.) neubergi, C. (C.) laricis, C. (C.) pectinatae, C. (C.) piceae, Eulachnus brevipilosus and E. nigricola. Five species of Eulachnini (C. (C.) piceae, C. (C.) nuda, C. (C.) piceicola, C. (C.) pinea, and C. (C.) pini) appeared to be most promising honey dew producers because their host plants, Picea abies and Pinus sylvestris, are the most common conifers in Lithuania. Although five species of Eulachnini were listed in the identification key of forest pests in Lithuania, none of them were of particular importance for now. Out of the recently reported species, only Cinara piceae may be a potential forest pest as it appeared to be rather common in Lithuania and it has been reported as a pest of firs in nurseries of Czech Republic and Northern Caucasus. Most of the samples from Lithuania represented COI haplotypes, which were not previously detected in other countries.
Evaluation of proteome profiles of Salix spp. pollen and relationship between glucose oxidase activity and pollen content in willow honey
Authors: Čeksterytė Violeta Leonora , Borutinskaitė V , Matuzevičius D , Treigytė G , Navakauskas D , Kurtinaitienė B , Navakauskienė R
Published: May 2020

Proteins from hand- and bee- collected pollen were isolated and separated in sodium dodecyl sulphate polyacrylamide gel electrophoresis (SDS-PAGE) and two-dimensional gel electrophoresis (2DE) system as well by direct gel-free mass spectrometry (MS) analysis. Total thirty six plant proteins with known functions and three uncharacterized were identified using mass spectrometry (MS) techniques from fourteen protein spots separated in 2D gel electrophoresis. Our study revealed two forms of profilin proteins with their slight different mass 14.19 kDa and 14.09 kDa and beta actin fragment was 33.25 kDa both in hand and bee collected pollen as well proteins of thioredoxin family with molecular weight - 47.29 kDa.  The antioxidant enzyme glucose oxidase (GOX) activity was investigated in twelve samples of monofloral willow honey, having Salix spp. pollen from 44.7 % to 80.2 %. Data of paired regression analysis between Salix spp. pollen content and GOX activity show moderate and negative correlation coefficient (r= - 0.56).

Keywords: willow pollen; honey; protein expression; separation; two-dimensional electrophoresis; mass spectrometry
Rancangan Explosive Detector Untuk Mengetahui Keberadaan Serta Jenis Bahan Peledak Dengan Membandingkan Besar Nilai Medan Magnet Menggunakan Arduino
Authors: Suprapto Yuyun , Zakariya K. M. Erwin
Published: May 2020

This design was created as an alternative Explosive Detector equipment as well as provide additional help if at an airport not provided the proper equipment. Its equipment is not yet available Explosive Detector at some airport and its equipment is expensive, the writer wanted to make a design Explosive Detector with a low costand designed with the latest technology. The design of Explosive Detector capable of detecting the presence and type of explosives by calculating a large magnetic field as well as large comparing magnetic field so they will know what kind of explosives were detected. The draft Explosive Detector uses Magnetometer sensor as the basic concept.
Analisis Perbandingan Velocity Dan Shear Stress Perkembangan Boundary Layer Flat Plate Menggunakan Turbulent Model k – ε (Standard, Realizable, RNG)
Authors: S.P. Setyo Hariyadi
Published: May 2020

Pengertian lapisan batas adalah daerah dimana aliran mengalami hambatan karena adanya tegangan geser yang besar pada permukaan benda, sehingga partikel-partikel fluida terpaksa berhenti pada sekitar permukaan benda karena geseran viskos. Aliran fluida sejati mana pun selalu menunjukkan adanya suatu daerah yang alirannya terhambat, yaitu dekat batas yang kecepatannya relatif terhadap batas bervariasi antara nol pada batas hingga suatu harga yang dapat diduga dari solusi aliran potensial di titik yang agak jauh dari situ. Daerah yang alirannya terhambat ini disebut lapisan batas (boundary layer) dan ketebalan lapisan batas itu sendiri dinyatakan dengan δ.Proses pembentukan lapisan batas mungkin poling baik bila divisualisasikan dengan membayangkan aliran di sepanjang sebuah pelat rata. Misalkan ada aliran seragam sebuah fluida tak dapat mampat mendekati pelat dengan kecepatan freestream. Ketika fluida mencapai tepi sebelah depan, tegangan geser yang besar terbentuk dekat dengan permukaan pelat karena partikel-partikel fluida yang tiba di situ terpaksa berhenti dan partikel-partikel yang cukup dekat dan normal terhadap plat dihambat oleh geseran viscous. Lapisan batas menebal dalam arah yang sama dengan arah aliran, akibatnya perubahan kecepatan dari nol dipermukaan pelat hingga jarak tertentu pada jarak δ semakin jauh menjadi semakin besar. Laju perubahan kecepatan tadi menentukan gradient kecepatan di permukaan plat dan karena itu tegangan gesernya juga. Studi numerik telah dilaksanakan untuk menguji kinerja aerodinamis pada plat datar dengan menggunakan beberapa turbulent model k – ε (Standard, Realizable, RNG). Kecepatan freestream yang digunakan yaitu kecepatan 10 m/s dan pada kondisi udara standard. Parameter yang dievaluasi meliputi shear stress dan profil kecepatan. Dari penelitian tersebut didapatkan bahwa dengan penggunaan turbulent model k – ε Realizable menghasilkan yang terbaik dibandingkan turbulent model yang lain.
Analisa Unjuk Kerja Flap Sebagai Penambah Koefisien Gaya Angkat
Authors: S. Rifdian I.
Published: May 2020

The process of takeoff and landing is a crucial factor in the phase of flight, other than because it is on the critical height but also the critical speed. At the time of the landing process required a low speed (no stall), as well as providing a high braking effect is obtained for a smooth landing and sliding distance is relatively short. At that result, in the process of landing a maximum flap deflection is used to produce CLmax and drag the highest. At the time the plane accelerate speeds for takeoff, immediately attempted to get the low takeoff speed (no stall), as well as provide a small braking effect to immediately achieved a high rate of speed. Thus required a small flap deflection of flaps on takeoff position.
Rancangan Sistem Monitoring Suhu dan Kelembaban Perangkat Set Top Box pada Internet Protocol Television Mengunakan Jaringan Local Area Network (LAN)
Authors: Suprapto Yuyun , Kurnia Nur Alviani , Warsito Totok , Rifai Moch.
Published: May 2020

This design was created to facilitate the monitoring the factor of the internet protocol television damage through technician server room. Cause of damage factor that will be monitoring are temperature, humidity and voltage on the device. Component used to monitoring the temperature and humidity is DHT22 sensor on the set top box device on internet protocol television. Basic concept of this design is DHT sensor will send the information about temperature and humidity alteration to Arduino UNO that will be processed by Arduino UNO. Data received from sensor processed by Arduino UNO and sent by ethernet shield to computer server. It will be discussed more clearly in this paper and more completely about the work principle of monitoring set top box system design on internet protocol television.
Analisa Kinerja Bandar Udara Kota
Authors: Pahala Fitrady , Kusno Kusno
Published: May 2020

Penelitian ini berupaya untuk menentukan potensi Halim Perdanakusuma Airport sebagai Bandar Udara Kota Jakarta di masa mendatang. Analisa Kinerja terhadap airport kota dilaksanakan di Halim dan Soekarno-Hatta dengan asusmsi bahwa kedua Bandar udara tersebut berada pada wilayah cakupan daerah dan letak geografis yang sama.

Metode penelitian berupa analisa kinerja digunakan untuk mengukur kinerja masing-masing Bandar udara dengan membandingkan Halim dengan Soekarno-Hatta sebagai Bandar udara utama yang melayani Kota Jakarta. Beberapa factor kunci akan diukur dengan seksama terkait dengan perkembangan lalu-lintas penumpang, dan kinerja keluaran bandara dengan beberapa parameter, meliputi produktifitas, efektifitas pembiayaan dan kinerja pendapatan.

Berdasarkan hasil penelitian ini diketahui bahwa Halim diprediksikan diharapkan mampu mengakomodasi 3,9 juta hingga 6 juta penumpang untuk lima tahun mendatang, dengan asumsi bahwa 10 persen lalu lintas di Soekarno-Hatta akan beralih ke Halim dan karena ini terminal penumpang di Halim perlu untuk dikembangkan. Dari sisi kinerja, Halim belum memiliki kemajuan produktifitas secara signifikan, namun di sisi lain mampu mengembangkan sisi non-aeronautik sehingga 50 persen dari total pendapatan berasal dari sisi non-aeronautik.

Akhirnya, berdasarkan hasil dari analisa kinerja di Halim dan Soekarno-Hatta diketahui bahwa beberapa aspek dan kinerja dari Bandar Udara Halim dapat dikembangkan dan memperlihatkan bahwa Halim mampu beroperasi dan sebenarnya memiliki potensi untuk dikembangkan sebagai Bandar Udara Kota Jakarta di masa mendatang.
English Learning Strategy as Foreign Language Relating to Demographic Factors on First Grade Cadets of POLTEKBANG
Authors: Rochmawati Laila , Wijanarko Aris , Fatmawati Fatmawati , S. Meita Maharani
Published: May 2020

The determing of language learning strategies that are often used by cadets in the Surabaya aviation polytechnic and knowing the correlation between the age, gender, major and educational background of each cadet are the goals in this reseach. Chi-Square test and Pearson product moment correlations test was used in order to determine whether or not common effect of age, gender, major and educational background of each cadet displayed significant differences on Language Learning Stratrgy of students. The results stated that the most frequently-used strategies were metacognitive strategies. The least frequently-used ones were affective strategies. The results of Pearson product moment correlations revealed that gender were the only demografic factors that were significantly correlated with the learners’ learning strategy. The relationship between learners’ learning strategy and gender was found to be positively significant .002 (sig < .005), learning strategy use associated with gender were significantly correlated.
STUDI EKSPERIMEN OIL FLOW VISUALIZATION PADA AIRFOIL NACA 0012 DENGAN TRAPEZOIDAL VORTEX GENERATOR MENGGUNAKAN OPEN CIRCUIT SUBSONIC WIND TUNNEL
Authors: Hariyadi Setyo , Aldo putra Habibie
Published: May 2020

Pada pembuatan suatu pesawat terbang, suatu analisis sebelum terbang terhadap kinerja aerodinamika dari pesawat tersebut sangat diperlukan, terutama untuk daerah dimana metoda analitik/empirik tidak dapat menjangkaunya seperti perkiraan CLmax, karakteristik stall dan lain-lainnya. Satu hal penting yang harus diperhatikan dalam pendesainan suatu pesawat yaitu pemilihan airfoil dan modifikasinya. Modifikasi airfoil dilakukan untuk menunda separasi aliran dan meningkatkan performa airfoil, salah satunya dengan vortex generator. Hal ini dapat diindikasikan dengan tertundanya separasi aliran yang melintasi permukaan atas dari airfoil.

Topik yang dikaji dalam penelitian ini adalah aliran melintasi airfoil NACA 0012 dengan penambahan vortex generator. Tujuan penelitian ini adalah untuk membandingkan karakteristik aliran fluida dengan dan tanpa penambahan vortex generator. Profil vortex generator yang digunakan adalah trapezoidal vortex generator dengan konfigurasi straight dan ditempatkan pada x/c = 20% arah chord line dari leading edge. Variasi yang digunakan adalah bilangan Reynolds (Re) dan sudut serang (α) pada airfoil. Kecepatan freestream yang digunakan yaitu kecepatan 10 m/s dan 20 m/s, pada sudut serang (α) 0°, 4°, 10°, 12°, 15°,dan 17°.

Dari penelitian ini didapatkan performa aerodinamika dan fenomena aliran di sekitar airfoil. Perihal ini ada peningkatan performa aerodinamika pesawat dari sudut serang 0° sampai sudut serang 12° terbukti dengan meningkatnya kecepatan transisi dari laminar boundary layer menjadi turbulent boundary layer.
Pengaruh Strategi Active Sharing Knowledge Terhadap Respon Afektif Taruna Diploma III Manajemen Transportasi Udara Mata Kuliah Pendidikan Pancasila di Politeknik Penerbangan Surabaya
Authors: Kusno Kusno
Published: May 2020

Penelitian ini dilatar belakangi oleh Taruna yang memiliki respon afektif yang kurang dalam proses pembelajaran. Jenis penelitian ini adalah penelitian eksperimen, yang bertujuan untuk mengetahui pengaruh strategi pembelajaran aktif tipe active knowledge sharing terhadap respon afektif Taruna pada pokok bahasan pancasila di Politeknik Penerbangan Surabaya. Sampel dalam penelitian ini adalah Taruna MTU sebagai kelas kontrol dengan jumlah Taruna 24 orang dan Taruna MTU sebagai kelas eksperimen dengan jumlah Taruna 24 orang yang dipilih secara purposive sampling. Data hasil penelitian dianalisis dengan analisis dalam hal kerjasma sebesar 81,1 dengan kategori sangat baik, keseriusan sebesar 85,6 dengan kategori sangat baik, kejujuran sebesar 85,6 dengan kategori sangat baik, komunikasi sebesar 83,6 dengan kategori sangat baik sehingga dapat dikatakan pembelajaran active knowledge sharing berpengaruh terhadap respon afektif Taruna.
Love, matrimony and sexuality: Saudi sensibilities and Muslim women's fiction
Authors: Abdullah Muhammad
Published: May 2020

All those desires, discriminations, success stories, and confrontations that otherwise might not have seeped into mainstream discourses are subtly said through the stories that mirror Arab women‟s lives. Girls of Riyadh is a postmodern cyber-fiction that delineates subjects we usually do not get to hear much about, i.e. the quest of heterosexual love and matrimony of young Arab women from the less women-friendly geography of Saudi Arabia. Though in the last two decades the scholarship on alternative discourses produced by Muslim women have been multitudinous, there is a scarcity of critical investigations dealing with creative constructions of postfeminist, empowered Muslim woman, not battling with patriarchal power structures, but negotiating aspects that matter most in real life: human associations and familial formations. This paper engages with the categories of love, marriage, and sexuality, drawing upon the lives of four educated, successful, „velvet class‟ Saudi women. The significance of this study is linked with carefully challenging some of the stereotypes about Arab women as victims of forced marriages and their commonly perceived discomfort with love at large. The study reveals that it is men who need to “man up” against cultural conventions since women are increasingly expressive in their choices and brave enough to face the consequences audaciously.
Walled in Roles: Woman as a wife and mother in Mohsin Hamid's Moth Smoke (2000)
Authors: Rehman Sabina
Published: May 2020

This paper discusses veils and walls in Mohsin Hamid’s novel Moth Smoke (2000) and shows how the woman in the novel, named Mumtaz, responds to her role as a wife and a mother. This essay has three parts: the first part compares the figure of Mumtaz with the seventeenth-century Mughal empress upon whom the character in the novel is based. The second part shows how Mumtaz tries to free herself from the walls of socially assigned roles and resists predetermined gender roles. The third part then analyses how names and titles function as veils to hide the individual behind a constricting network of nomenclature. Acquiring a male pseudonym, Mumtaz, defies the walls of a gender-specific identity.
Antimicrobial activities of soaps containing Senna alata leaf extract
Authors: Aminuddin Muhammad Fairuz , Basri Aida Maryam , Taha Hussein , Abidin Adlan Mursyid , Ahmad Norhayati
Published: May 2020

Senna alata is an important ethnomedicinal plant and is often used traditionally to treat skin diseases. Hence, it can be a potential attractive ingredient for natural skincare products. In this study, we determined the potential of producing antimicrobial soaps by using S. alata leaf extract, either aqueous crude extract or essential oil, as the key ingredient and also virgin coconut oil as the base. Although S. alata essential oil is not feasible yet to be considered for soap production due to its poor extraction yield, the aqueous leaf crude extract had shown promising potential. Our antimicrobial assays showed the aqueous extract exhibited antifungal activity but did not show any antibacterial activity under the conditions tested. Similarly, the prototypes of S. alata soap containing the aqueous extract also showed an antifungal activity against Saccharomyces cerevisiae. Therefore, the potential use of S. alata for antimicrobial soaps warrants further consideration and studies.
Coral diversity and coral reef environment in Brunei Darussalam
Authors: Tanaka Yasuaki
Published: May 2020

This article reviews the coral diversity and coral reef environment in Brunei Darussalam, in comparison with the other regions in the South China Sea (SCS). Extensive surveys on corals had not been conducted in Brunei Darussalam for a long time but the recent efforts of coral identification have revealed that approximately 400 species of scleractinian corals inhabit in Brunei seawaters, which is close to the highest diversity in the SCS. The most dominant coral family in species number was Acroporidae, which accounted for 30% of the whole coral species. Using the published data on coral diversity in the SCS, multivariate analyses showed that the number of coral species in any tested coral familiy (Acroporidae, Agariciidae, Fungiidae, Lobophylliidae, Merulinidae, and Poritidae) in a region was significantly correlated with the total number of coral species in the region, indicating that the coral diversity in any family reflects the coral diversity in the whole ecosystem. Although the high coral diversity was confirmed in Brunei Darussalam, several threats to corals have also been reported. Regular monitoring of the coral reef status is required to promptly detect undesirable environmental changes in the future.
Computational study of modification of cyanidin as high efficient organic sensitizer for dye sensitized solar cells
Authors: Galappaththi Kalpana , Ekanayake Piyasiri , Petra Mohammad Iskandar
Published: May 2020

We report results of computational study of a newly designed cyanidin based molecular structure, P02, as efficient sensitizers for dye sensitized solar cells (DSSCs). To design this P02, widely used promising natural dye sensitizer cyanidin [1] is combined with α-cyanocinnamic acid and the resultant structure is computationally simulated by using SPARTAN’10 software package [2].The moleculer geometries, electronic structures, absorption spectra and deprotonation enengies of newely designed organic sensitizer are investigated through density functional theory(DFT) and time-dependent density functional theory(TDDFT) approach using GAUSSIAN’09W software package [3]. Furthermore DFT and TDDFT computational calculations are performed on cyanadin too, as reference. The solvation effect in ethanol are included in all calculations.The computational studies on the new dye have shown broadening of the absorption spectra in visible region with significant shifting towards a longer wavelength  compared to the cyanidin. Our computational study results indicated that the new dye P02 should exhibit better performance as a sensitizer due to its improved optical properties.
Rapid detection of pork DNA in food samples using reusable electrochemical sensor
Authors: Munirah Hafizah , Roy Sharmili , Ying Jean L.Z. , Rahman Ibrahim A. , Ahmed Minhaz Uddin
Published: May 2020

This study aims to demonstrate the potential use of reusable electrochemical sensor for detecting pork DNA in solution. The approach was based on electrochemical principle in which the electrostatic interaction between DNA and redox species will generate detectable signal upon introduction of electrical charge. In this study, Ruthenium Hexaamine (RuHex) was used as the redox species and result was based on the output current. Coupled with highly specific Polymerase Chain Reaction (PCR) primers designed for pork DNA, this study has successfully demonstrated the reliability of proposed novel detection approach that utilized reusable electrochemical sensor and can potentially be developed into a rapid detection tool for halal and kosher food industry.
Impact of Intelligent Biofeedback during Rehabilitation of Professional Athletes: A Model for Next Generation Smart Healthcare System
Authors: Malik Owais Ahmed , Senanayake SMN Arosha
Published: May 2020

This paper presents a general framework of intelligent biofeedback for smart healthcare system and its impact on healthcare of professional athletes, especially during rehabilitation monitoring. The application of machine learning techniques along with various wireless wearable sensors facilitated in building a knowledge base system for healthcare monitoring of the subjects and providing a visual/numeric biofeedback to the clinicians, patients and healthcare professionals. The validated system can potentially be used as a decision supporting tool by the clinicians, physiotherapists, physiatrists and sports trainers for quantitative rehabilitation analysis of the subjects in conjunction with the existing recovery monitoring systems. Based on the results achieved, a conceptual design and model for next generation smart healthcare system/devices for professional athletes has been proposed.
First record and conservation value of Periophthalmus malaccensis Eggert from Borneo, with ecological notes on other mudskippers (Teleostei: Gobiidae) in Brunei
Authors: Polgar Gianluca
Published: May 2020

The mudskipper Periophthalmus malaccensis is first recorded in Borneo, from two mangrove areas of Brunei Darussalam. The distribution and habitat types where this and other ecologically similar mudskippers (Periophthalmus and Periophthalmodon species) were found in Brunei are also described, from field surveys conducted in Bruneian coastal wetlands from 2013 to 2015. P. malaccensis has a relatively restricted geographic distribution, and probably got extinct in historical times in Singapore. In Brunei, this species occurs at low population density in high intertidal habitats, which are highly impacted by anthropogenic destruction and fragmentation. For these reasons, the conservation status of this species should be evaluated.
An introduction to locally convex cones
Authors: Roth Walter
Published: May 2020

This survey introduces and motivates  the foundations  of the theory oflocally convex cones which aims to generalize the well established theory of locally convex topological vector spaces. We explain the main concepts,provide definitions, principal results, examples and applications. For details and proofs we generally refer to the literature.
Removal of acid blue 25 from aqueous solution by using common salts and seawater to induce the salting out effect
Authors: Kooh Muhammad Raziq Rahimi , Dahri Muhammad Khairud , Lim Linda , Hoon Lim Lee
Published: May 2020

This study used common salts (monovalent and divalent salts) and seawater to cause aggregation of an acid dye, AB25 to a particle size large enough to be removed by simple filtration using a filter paper. All the common salts (CaCl2, Mg(NO3)2, KNO3, KCl, NaCl) were able to produce high removal efficiencies of AB25 (100 mg/L, unadjusted pH) at 99.4%, 90.3%, 98.4%, 99.3% and 99.3%, respectively, while a 2.5x dilution of seawater was successful in removing up to 93.8% of AB25. These findings proved the effectiveness of this method which is a much simpler and direct approach to dye wastewater remediation.
Phytochemical characterization of essential oils from shoots, mature leaves and branchlets of Litsea elliptica (Lauraceae) collected in Brunei Darussalam
Authors: Pillai Manoharan Karuppiah , Hj Yakop Farazimah binti , Metussin Nurzaidah binti , Sheikh Abd Hamid Malai Haniti binti , Hj Mohd Yasin Hartini binti , Hj Abdul Majid Hj Mohamed bin , Young David James
Published: May 2020

Essential oils from shoots, mature leaves and branchlets of Litsea elliptica were analyzed for their phytochemical compositions by GC-MS. A total of 12 compounds were identified from all three essential oils of L. elliptica.7-Decen-2-one (44.60%), 9-decen-2-ol (23.65%) and 2,7-octadienyl acetate (13.80%) were the major constituents of the essential oil from the shoots. p-Menthan-8-ol, (18.57%), 7-decen-2-one (10.62%), 9-decen-2-ol (25.09%) and α-terpineol (34.54%) were the major constituents of the essential oil from the mature leaves. Geranyl acetate (58.51%) and α-terpineol (20.95%) were the major constituents of the essential oil from the branchlets. L. elliptica has therapeutic applications in traditional medicine. Essential oils and/or extracts from various parts of this plant are reported to have promising biological and pharmacological activities.
Restrukturisasi Sistem Pelatihan Kepemimpinan dalam Membentuk Calon Pemimpin Masa Depan: Pendekatan Studi Literatur
Authors: Helmy Zahron , Jamil Ahmad Syariful
Published: May 2020

Kepemimpinan yang efektif adalah bagian integral dari efektifitas suatu organisasi pemerintah. Oleh karena itu, artikel ini bertujuan memaparkan mengenai studi pengembangan system pelatihan kepemimpinan dalam rangka mempersiapkan calon pemimpin masa depan. Pelatihan kepemimpinan bagi organisasi pemerintah di Indonesia pada dasarnya telah menjadi konsen pemerintah sejak lama. Hasil evaluasi menunjukkan bahwa secara umum penyelenggaraan pelatihan kepemimpinan sudah efektif. Akan tetapi, pelatihan kepemimpinan masih membutuhkan perbaikan khususnya pada dampak pelatihan terhadap kinerja organisasi. Pelatihan cenderung dianggap sebagai beban biaya, belum sebagai investasi yang dapat diukur tingkat pengembalian. Kondisi tersebut menuntut lembaga pelatihan kepemimpinan dapat mengembangkan kerangka strategi pendekatan secara holistic. Pendekatan tersebut dapat dilakukan melalui: 1) pengembangan calon peserta program pendidikan dan pelatihan melalui manajemen talenta; 2) restrukturisasi program pendidikan pelatihan melalui inovasi model program, pengembangan lembaga dan buying leaders dan 3) Integrasi program pendidikan dan pelatihan dengan lelang jabatan melalui pemanfaatan talent pool. Adanya integrasi dari ketiga pendekatan tersebut diharapkan dapat menghasilkan calon pemimpin masa depan yang handal dan berkarakter.
The Place Of Sonoelastography In Characterization Of Parotid Masses
Authors:   SELMAN CEVHEROGLU,   OMER OZBERK,   ISMET TOLU,   MEHMET ALİ ERYILMAZ
Published: May 2020

Objective: In this study, we investigated the effectiveness of sonoelastography, a new noninvasive test in the benign malignant differentiation of parotid lesions.

Materials and methods: In this study, 34 patients who were admitted to Konya Education and Research Hospital Radiology Clinic-Ultrasonography Department between June 2012 and October 2013 with a preliminary diagnosis of parotid gland mass were examined prospectively. The ultrasonelastography results of the patients were recorded to compare with their definitive histopathological diagnosis. The evaluation was performed using a 12 MHz probe with a Toshiba aplio MX device (Toshiba Medikal, Nasu; Japan) with real-time elastography software. After the elastograms were obtained, the strain of the mass and adjacent normal parotid tissue was measured and proportioned with the help of 'region of interest' (ROI) in the relevant area.

Results: The youngest of the 34 patients evaluated was 14 years old, the oldest was 85 years old, and the mean age was 51.76. Twenty patients were male (58.82%) and 14 were female (41.18%). In the histopathological evaluation of the cases, 47.05% were diagnosed as benign tumor, 38.24% were other benign lesions and 14.71% were diagnosed as malignant tumor. Considering only tumoral masses, 16 of 21 cases (76.19%) were benign (11 pleomorphic adenoma, 5 Whartin tumor) and 5 (23.81%) were malignant. Mean strain rate values were calculated as 1.67 ± 1.29 for benign masses and 2.27 ± 1.55 for malignant masses. No statistically significant difference was found in comparison of strain mean of malignant and benign masses (p = 0.357).

Conclusion: We observed that sonoelastography was not effective in distinguishing malignant and benign masses of the parotid gland.
Retrieval of Aerosol Combined with Assimilated Forecast
Authors: Yoshida Mayumi , Yumimoto Keiya , Nagao Takashi M. , Tanaka Taichu , Kikuchi Maki , Murakami Hiroshi
Published: May 2020

Abstract. We developed a new aerosol retrieval algorithm combining a numerical aerosol forecast. In the retrieval algorithm, the short-term forecast from an aerosol data assimilation system was used for a priori estimate instead of spatially and temporally constant values. This method was demonstrated using the Advanced Himawari Imager onboard the Japan Meteorological Agency’s geostationary satellite Himawari-8, and the results showed spatially finer distributions than the model forecast and less noisy distributions than the original algorithm. We validated the new algorithm using ground observation data and found that the aerosol parameters detectable by satellite sensors were retrieved more accurately than a priori model forecast by adding satellite information. Moreover, the retrieval accuracy was improved by using the model forecast as compared with using constant a priori estimates. By using the assimilated forecast for a priori estimate, information from previous observations can be propagated to future retrievals, thereby leading to better retrieval accuracy. Observational information from the satellite and aerosol transport by the model is incorporated cyclically to effectively estimate the optimum field of aerosol.
The extremely warm summer 2018 in Sweden – set in a historical context
Authors: Wilcke Renate A. I. , Kjellström Erik , Lin Changgui , Matei Daniela , Moberg Anders
Published: May 2020

Abstract. Two long-lasting high pressure systems in summer 2018 lead to long lasting heat waves over Scandinavia and other parts of Europe and an extended summer period with devastating impacts on agriculture, infrastructure and human life. We use five climate model ensembles and the unique 263 year long Stockholm temperature time series along with a composite 150 year long time series for whole Sweden to set the latest heat-wave in summer 2018 in historical perspective. With 263 years we are able to grasp the pre-industrial time well and see a clear upward trend in temperature itself as well as heat wave indicators. With five climate model ensembles providing 20 580 simulated summers representing the latest 70 years, we analyse the likelihood of such a heat event and how unusual the 2018 Swedish summer actually was. We find that conditions as those observed in summer 2018 show up in all climate model ensembles. An exception is the monthly mean temperature for May for which 2018 was warmer than any member in one of the five climate model ensembles. However, even if the ensembles generally hold individual years like 2018, the comparison shows that such conditions are rare. For the indices assessed here, anomalies such as observed in 2018 occur maximally in 5 % of the ensemble members, sometimes even in less than 1 %. For all indices evaluated we find that probabilities of a summer like in 2018 have increased from relatively low values for the one ensemble extending back to 1861–90 and for all five ensembles including 1951–80 to the most recent decades (1989–2018). An implication is that anthropogenic climate change has strongly increased the probability of a warm summer such as the one observed 2018 to occur in Sweden. Despite this, we still find such summers also in the pre-industrial climate, however, with a lower probability.
Comparison of generalized non-data-driven lake and reservoir routing models for global-scale hydrologic forecasting of reservoir outflow at diurnal time steps
Authors: Gutenson Joseph L. , Tavakoly Ahmad A. , Wahl Mark D. , Follum Michael L.
Published: May 2020

Abstract. Large-scale hydrologic forecasts should account for attenuation
through lakes and reservoirs when flow regulation is present. Globally
generalized methods for approximating outflow are required but must contend
with operational complexity and a dearth of information on dam
characteristics at global spatial scales. There is currently no consensus on
the best approach for approximating reservoir release rates in large spatial
scale hydrologic forecasting, particularly at diurnal time steps. This
research compares two parsimonious reservoir routing methods at daily steps: Döll et al. (2003) and Hanasaki et al. (2006). These reservoir routing
methods have been previously implemented in large-scale hydrologic modeling
applications and have been typically evaluated seasonally. These routing
methods are compared across 60 reservoirs operated by the U.S. Army Corps of
Engineers. The authors vary empirical coefficients for both reservoir
routing methods as part of a sensitivity analysis. The method proposed by
Döll et al. (2003) outperformed that presented by Hanasaki et al. (2006)
at a daily time step and improved model skill over most run-of-the-river
conditions. The temporal resolution of the model influences model
performances. The optimal model coefficients varied across the reservoirs in
this study and model performance fluctuates between wet years and dry years,
and for different configurations such as dams in series. Overall, the method
proposed by Döll et al. (2003) could enhance large-scale hydrologic
forecasting, but can be subject to instability under certain conditions.
Very high-resolution modelling of submesoscale turbulent patterns and processes in the Baltic Sea
Authors: Onken Reiner , Baschek Burkard , Angel-Benavides Ingrid M.
Published: May 2020

Abstract. In order to simulate submesoscale turbulent patterns and processes
(STPPs) and to analyse their properties and dynamics, the Regional
Ocean Modeling System (ROMS) was run for June 2016 in a subregion of
the Baltic Sea. To create a realistic mesoscale environment, ROMS with
500 m horizontal resolution (referred to as R500) is one-way nested
into an existing operational model, and STPPs with horizontal scales
<1 km are resolved with a second nest of 100 m resolution
(R100). Both nests use 10 terrain-following layers in the vertical.
The comparison of the R500 results with a satellite image shows fair
agreement. While R500 is driven by realistic air–sea fluxes, the
atmospheric forcing is turned off in R100 because it prevents the
generation of STPPs and blurs submesoscale structures. Therefore, R100
provides deep insight into ageostrophic processes and associated
quantities under quasi-adiabatic conditions that are approximately met
in no-wind or light-wind situations. The validity of the results is
furthermore limited to the selected region and the time of the year.
STPPs evolve rapidly within a about a day. They are characterized by
vertical speeds of 𝒪(10) m d−1 and relative vorticities
and divergences reaching multiples of the Coriolis parameter. Typical
elements of the secondary circulation of two-dimensional
strain-induced frontogenesis are identified at an exemplary front in
shallow water, and details of the ageostrophic flow field are
revealed. The conditions for inertial and symmetric instability are
evaluated for the whole domain, and the components of the tendency
equation are computed in a subregion. While anticyclonic eddies are
generated solely along coasts, cyclonic eddies are rolled-up streamers
and found in the entire domain. A special feature of the cyclones is
their ability to absorb internal waves and to sustain patches of
continuous upwelling for several days, favouring plankton growth. The
kinematic properties show good agreement with observations, while some
observed details within a small cyclonic eddy are only partly
reproduced, most likely due to a lack of horizontal resolution or
nonhydrostatic effects.
High-resolution late Holocene sedimentary cores record the long history of the city of Cádiz (south-western Spain)
Authors: Salomon Ferréol , Bernal-Casasola Darío , Díaz José J. , Lara Macarena , Domínguez-Bella Salvador , Ertlen Damien , Wassmer Patrick , Adam Pierre , Schaeffer Philippe , Hardion Laurent , Vittori Cécile , Chapkanski Stoil , Delile Hugo , Schmitt Laurent , Preusser Frank , Trautmann Martine , Masi Alessia , Vignola Cristiano , Sadori Laura , Morales Jacob , Vidal Matutano Paloma , Robin Vincent , Keller Benjamin , Sanchez Bellón Ángel , Martínez López Javier , Rixhon Gilles
Published: May 2020

Abstract. Today, coastal cities worldwide are facing major changes
resulting from climate change and anthropogenic forcing, which requires
adaptation and mitigation strategies to be established. In this context,
sedimentological archives in many Mediterranean cities record a
multi-millennial history of environmental dynamics and human adaptation,
revealing a long-lasting resilience. Founded by the Phoenicians around 3000 years ago, Cádiz (south-western Spain) is a key example of a coastal
resilient city. This urban centre is considered to be one of the first
cities of western Europe and has experienced major natural hazards during its
long history, such as coastal erosion, storms, and also tsunamis (like the
one in 1755 CE following the destructive Lisbon earthquake). In the framework of an international, joint archaeological and
geoarchaeological project, three cores have been drilled in a marine
palaeochannel that ran through the ancient city of Cádiz. These
cores reveal a ≥50 m thick Holocene sedimentary sequence. Importantly,
most of the deposits date from the 1st millennium BCE to the 1st
millennium CE. This exceptional sedimentary archive will allow our
scientific team to achieve its research goals, which are (1) to reconstruct
the palaeogeographical evolution of this specific coastal area; (2) to trace
the intensity of activities of the city of Cádiz based on archaeological
data, as well as geochemical and palaeoecological indicators; and (3) to
identify and date high-energy event deposits such as storms and tsunamis.
Water- and land-borne geophysical surveys before and after the sudden water-level decrease of two large karst lakes in southern Mexico
Authors: Bücker Matthias , Flores Orozco Adrián , Gallistl Jakob , Steiner Matthias , Aigner Lukas , Hoppenbrock Johannes , Glebe Ruth , Morales Barrera Wendy , Pita de la Paz Carlos , García García Emilio , Razo Pérez José Alberto , Buckel Johannes , Hördt Andreas , Schwalb Antje , Perez Liseth
Published: May 2020

Abstract. The present geophysical study was motivated by the need to determine suitable coring locations for paleolimnological studies in two karst lakes (Metzabok and Tzibaná) of the Lacandon Forest in Chiapas, southern Mexico. We used seismic and transient electromagnetic methods to map the sediment thickness below the lake floor. When lakes were filled in March 2018, we collected seismic data with a sub-bottom profiler (SBP) and transient electromagnetic (TEM) data with a floating single-loop configuration. The latter aimed at assessing the TEM method as an alternative to seismic methods for the investigation of lake sediments and geology. After the first campaign, water levels of both studied lakes dropped dramatically by July 2019, leaving Lake Metzabok (maximum depth ~ 25 m) dry and Lake Tzibaná (~ 70 m) with a water level decreased by approx. 30 m. After the sudden drainage of the lakes, we complemented water-borne measurements by a survey carried out on the exposed lake floor in October 2019, when lake levels were still low. During this second campaign, we collected time-domain induced polarization (TDIP), and seismic refraction tomography (SRT) data on the desiccated bed of Lake Metzabok and some dry parts of Lake Tzibaná. By comparing the various data sets, we find that (i) SBP and TDIP phase images consistently resolve the thickness of the fine-grained lacustrine sediments covering the lake floor, (ii) TEM and TDIP resistivity images consistently detect the upper limit of the limestone bedrock and the geometry of fluvial deposits of a river delta, and (iii) TDIP and SRT images suggest the existence of a layer that separates the lacustrine sediments from the limestone bedrock and consists of collapse debris mixed with lacustrine sediments. While our results do not imply that resistivity-based methods could generally replace seismic reflection surveys for lake-bottom reconnaissance, they clearly show that TEM and TDIP surveys can provide important complementary information and resolve additional geological units or bedrock heterogeneities.