bluuebunny/crossref_metadata_2025 huggingface dataset:
Kadar Sianida Singkong Rebus dan Singkong Goreng
Authors: Purwati Yeni , Thuraidah Anny , Rakhmina Dinna
Published: October 2018

Cassava is the third staple food often used by people to make a variety of products. Carbohydrates from cassava also contains toxic compound such as cyanide which can inhibit the action of respiratory enzymes. Cyanide in cassava can be removed by boiling or frying process. The aim of research was to find out the cyanide level differences between boiled cassava and fried cassava. This type of research was experiment, with design of comparative studies approach. Cyanide levels were examined in 10 samples with 2 treatments using Argentometry Volhard titration method. The result showed the average of cyanide levels in boiled cassava was 0.772 ppm and in fried cassava was 1.069 ppm. The percentage of cyanide levels reduction in boiled cassava was 28,78%, while for the fried cassava was 0%. The statistical test obtained the value of p <0.05, that showed there was significant difference of cyanide level between boiled cassava and fried cassava. Based on these results, it is advisable to choose the boiling process for cassava consumption. Next research can be conducted on comparative levels of cyanide in the cassava root and cassava leaves.
Foreign Learning Platforms in Russian Education System: Potential Capacity Evaluation and Risks Forecasting
Authors: Onosov A. A. , Bryzgalina E. V. , Savina N. E. , Tumanov S. V.
Published: October 2018

The article deals with an analytical description of problems caused by integration of foreign learning platforms into the Russian education system.  It provides the main results and conclusions reached within the frame of the  fundamental quantitative research project. The project goals were the  following: to study Russian experience in using learning platforms, foreign  ones in particular; to study abundance of foreign learning platforms; to  reveal and specify typical risks caused by their functioning in Russian  education sphere. The authors analyze statistical information obtained  through processing the data of survey of experts in online education. They  consider colligated opinions and assessments by professional community of  integration and application of foreign learning platforms, online courses  arrangement on them and the complex of those potential threats for Russian  education that could be caused by their use. The work notes that learning  platforms are an innovative form of education activities management, but  their integration in the national system of education is connected with a  number of risks. The article gives a contemporary review of learning  platforms in the Russian educational field in terms of their nominal  recognition, their real demand for by the experts in online education and their long-term benefits for national education. The principal criteria for  the choice of learning platforms usage in education are stated and  summarized on the basis of the empirical data. The study contains a  description of a complex of main tasks for Russian education; in the professional environment their successful solving is linked to the shift to  online education technology. Within the frame of forecasting and evaluation  of risks in education there have been defined some threats which are typical  for both domestic and foreign learning platforms as well as those which are  specific for the latter ones. Risks interpretation is based on theoretical  preliminary studies and experts’ survey data related to the subject. The  categorical range of risks obtained includes content risks, social, economic  and political risks, psychological and pedagogical risks, management risks. The authors raise the problem of regulation of foreign learning  platforms integration into the Russian education system. The work contains  the arguments for and against control in this sphere.
Communicative Language Teaching Method in Teaching the Kazakh Language to Russian-Speaking Technical Students in Kazakhstan
Authors: Aubakirov N. M. , Dolgopolova A. A.
Published: October 2018

The article deals with the specifics of teaching Kazakh language to Russian-speaking technical students at Karaganda State Technical University, Kazakhstan, in the light of the nationwide trilingualism policies. The paper explains ineffectiveness of the traditional grammar-translation method used today in many educational institutions. It  has been hypothesized that Kazakh language teachers should use the  Communicative language teaching (CLT) methodology, which is rather popular in the West and widely used for teaching foreign languages, in particular English, with its adaptation for Kazakhstan’s conditions. The study  gives a model of a communication-based lesson and proves its effectiveness  in teaching Kazakh language to Russian-speaking students as well as  suggests the possibility of its widespread implementation for training adult population in Kazakhstan.
Application of Interactive Training in Studying Economic Disciplines
Authors: Musienko S. O.
Published: October 2018

The need for applying interactive teaching methods is dictated by the current legislation of the Russian Federation. It is widely known in the academic  world that active and interactive teaching methods are more effective. They  increase students’ motivation to study, as well as the learning efficiency and  quality. The article describes the characteristics of interactive learning, as  well as the possibility of its application to the study of economic disciplines.  The emphasis is placed on the methodology for implementing interactive  forms of learning relating to theoretical questions, which, unlike the  consideration of practical aspects, remains insufficiently covered. An example of conducting classes in an  interactive form is presented. The presented form of interactive training allows  studying of the majority of economic phenomena, concepts, categories.
Domestic Education as a System and an Object of Management
Authors: Ivakhnenko E. N.
Published: October 2018

The article proposes communicative conceptualization of the notion of “education system”. The turn of modern theoretical sociology toward the  system-communicative theory (N. Luhmann), in the author’s opinion, marked not only a waiver of structural and functional approaches to the analysis and management  of social systems, but also a refrain from the relapses of their criticism built on  the notion of “ideal norm”. The author also makes an attempt to implement the  logic of the development of operationally closed recursively evolving systems as  a tool for analyzing some actions of the regulator on reforming Russian higher  education, which were directly transferred to higher education institutions within the last 10–15 years.
Ressourcenleichten Konsum gestalten – die Stellschrauben der Außer-Haus-Gastronomie
Authors: Speck Melanie , Bienge Katrin , Engelmann Tobias , Langen Nina , Teitscheid Petra , El Mourabit Xenia
Published: October 2018

Nachhaltiger Konsum im privaten Haushalt gilt als wichtiger Hebel für eine nachhaltigere Entwicklung unserer Gesellschaft. Doch die Möglichkeiten der Einflussnahme sind dort begrenzt. Weitere Hebel, wie der Außer-Haus-Konsum (hier am Beispiel der Außer-Haus-Verpflegung), sollten deshalb nicht unterschätzt und weiter ausgebaut werden. Diese Hebelwirkung wird am Beispiel des Forschungsprojektes „NAHGAST – Entwicklung, Erprobung und Verbreitung von Konzepten zum nachhaltigen Produzieren und Konsumieren in der Außer-Haus-Gastronomie“ thematisiert.
It’s good to talk! Reflective Discussion Forums to support and develop Reflective Practice among Pre-Hospital Emergency Care Practitioners in Ireland.
Authors: O'Connor Chris , O'Hara Joe
Published: October 2018

Background

Since the mid 1980’s, reflective practice has become formally acknowledged and adopted as a key strategy for learning and has become one of the cornerstones of medical education for doctors, nurses, and many of the allied healthcare professions. In the education of pre-hospital emergency care practitioners in Ireland, it is only in the last decade that the notion of reflective practice has been tentatively approached.  Indeed until recently it has largely been ignored by practitioners and educators alike, who have been slow to engage with this new way of learning. This paper explores the attitudes of practitioners to the use of a reflective discussion forum to encourage and support reflection and reflective practice among pre-hospital emergency care practitioners in Ireland.  It also examines the experiences of practitioners who participated in a collaborative reflective discussion forum.

Literature

The research was informed by reviewing literature from a number of areas including:  Adult Learning, Reflective Practice, Educational Research directly relating to Emergency Medical Services (EMS), and EMS & Nursing Journals and publications.

Methodologies

This paper is part of a larger project which consisted of three cycles of action research.  Data was collected via an online survey questionnaire, and by conducting a series of semi-structured interviews with participants in the reflective discussion forum.  These included all three clinical levels of pre-hospital emergency care practitioners and the three hierarchical levels within the organisation.

Findings

The collaborative reflective discussion forum was found to be beneficial.  Among the benefits cited were, the opportunity to draw on the experience of more experienced colleagues, the development of critical thinking skills, and the potential for use as part of a mentoring process.  It was also felt that the collaborative nature of the forum had the potential to improve workplace relationships through the empowerment of the staff. Concerns were raised regarding the potential for abuse and misuse, particularly in relation to the areas of patient confidentiality and a lack of trust within organisations.

Recommendations

The establishment of a regular Reflective Discussion Forum within organisations as a key learning strategy. Any collaborative forum must be chaired by a trusted, experienced and highly skilled facilitator. A learning contract for all participants and faculty, including a confidentiality agreement, must be in place prior to the establishment of any collaborative forum.
Editorial: Kriminalität und Zivilisationsverlust
Authors: Redaktion Prokla
Published: October 2018

Editorial: Kriminalität und Zivilisationsverlust
Wird der »Osten« zum »Süden«?
Authors: Przeworski Adam
Published: October 2018

In retrospect, it is easier to acknowledge the »necessary« collapse of Eastem European socialism than explaining it in terms of what brought it about. The Theory of Totalitarianism had blurred the view on the social dynamics of real-socialist societies, in the course of which the binding-force of state-sustaining ideology had been increasingly eroded over the past decades. In the end, this was also among those in power - hence the bloodless course ofthe uprisings. What will the future hold: flourishing capitalism, as in the case of Spain, or a South-American-type poor capitalism?
Neotraditionalistischer Staatssozialismus
Authors: Ettrich Frank
Published: October 2018

By discussing the theoretical concepts of »totalitarianism« and »pluralism«, a frame of reference for analysing state-socialist societies is presented which determines the latter as »neo-traditionalist«. Within this context, which analyses real-socialist countries as politically constituted labour societies, great significance is attached to social mechanisms of integration beyond force and violence. Peaceful agreements and willingness to consent were secured within labour and authority structures by, particularly, institutionalised clienteleism.
Nationalismus und Politik in Osteuropa
Authors: Magas Branka
Published: October 2018

Der Determinismus des von Gellner behaupteten Deutungsmusters läßt sich bestreiten. Das Problem Osteuropas ist nicht die ethnische Heterogenität als solche, sondern die Verteilung gesellschaftlicher Macht auf verschiedene gesellschaftliche Gruppen ausgeübt wird. Nicht kontrovers ist allerdings, daß zwischen der nicht existierenden Demokratie in der ehemaligen Sowjetunion und der destruktiven Kraft des Nationalismus ein enger Zusammenhang besteht. Die neuentstehenden »demokratischen Parteien« sind zutiefst nationalistisch geprägt.
Aufstand in Los Angeles
Authors: Mayer Margit
Published: October 2018

Siebenundzwanzig Jahre nach den »Watts Riots« brach in Los Angeles wieder Aufruhr aus - mit »Nachbeben« in Las Vegas, Atlanta, Seattle, Tampa und anderen Großtädten. Ausgelöst durch den Freispruch vier weißer Polizeibeamter, deren brutales Zusammenschlagen eines Schwarzen die Nation dank eines Zufalls ausnahmsweise mitbezeugen konnte, entluden sich Protest, Wut und Gewalt in amerikanischen Innenstädten, die in vielem an die überwunden geglaubten Rassenunruhen der 60er Jahre erinnerten. Der Ausbruch an Gewalt legte aber auch die tiefe Kluft bloß, die sich während der »booming 80s«, von der breiten Öffentlichkeit unbemerkt, durch die amerikanische Gesellschaft gegraben hat: nach 36 Stunden Anarchie und Terror wurde sie plötzlich anerkannt, in allen Medien und von den wahlkämpfenden Politikern thematisiert und (re-)definiert: die Kluft zwischen Weiß und Farbig, die Kluft zwischen Suburbia und Innenstadt....
Die Kunst zahnloser Kritik
Authors: Narr Wolf-Dieter
Published: October 2018

Die Beschaulichkeit der »kommunitären« Sozialphilosophie und das Lob, das sie gutbürgerlichen Tugenden spendet, indiziert die Erschöpfung kritischer Energien. Die Apologie des Partikularen geht mit der Unfähigkeit einher, die allgemeinen Herrschaftsverhälmisse in den gegenwärtigen Gesellschaften konkret zu benennen, und schlägt in Indifferenz um.
Kettenmoleküle und Assoziationsketten - Metaphern in der Gentechnologie und Genomanalyse
Authors: Gill Bernhard
Published: October 2018

Molecular genetics, which used to study individual genes and today examines whole genomes, is connected to mechanical and information-theoretical images. According to the author' s thesis, these metaphors have a large influence on the context of discovery, argumentation and application in Biology and Medicine. They form the ground on which a common world-view of science and society is established, however, they lead to socially and ecologically dangerous errors of judgement.
Alternativen zu Schocktherapie und Verschuldung
Authors: Wittkowsky Andreas
Published: October 2018

Die ausführlichste Analyse der sowjetischen Wirtschaft wurde in einer Gemeinschaftsstudie von Weltbank, IWF u.a. unternommen. Die daraus abgeleiteten Reformszenarien sind gleichwohl defizitär, da sie von illusorischen Annahmen über die Funktionsweise von Märkten ausgehen. Zur Vermeidung von einem transformationsbedingten Marktversagen schlägt der Autor u. a. wohldosierte industriepolitische Maßnahmen vor, die die Sozialpolitik als integralen Teil einer Stabilisierung anerkennen. Internationale Hilfe hätte sich enger am historischen Marshall-Plan zu orientieren, insbesondere an dessen hohem Schenkungsteil; neben einer institutionalisierten Kooperation wären »Gegenwertfonds« als Mittel der Kapitallenkung einzusetzen.
Das Leben des Fötus von Erlangen
Authors: Herrmann Martina
Published: October 2018

Die Fortschritte der Medizin werfen ethische Fragen auf, die sich nicht durch allgemeine Prinzipien entscheiden lassen. Mit fortschreitenden Diagnosemöglichkeiten scheinen sich zugleich die Kriterien zur Unterscheidung von Leben und Tod zu verschieben, ebenso wie die perinatale Medizin den moralischen Status eines Fötus immer weiter vorzuverlagern scheint. Dies macht die Beantwortung ethischer Fragen, sobald sie sich praktisch stellen, zu einem äußerst komplexen Problem.
Lise Öğrencilerinin Yaşam Doyumu Düzeylerinin Çeşitli Değişkenler Açısından İncelenmesi
Authors: YAZICI ÇELEBİ Gülin , ÇELEBİ Bülent
Published: October 2018

Ergenlik dönemi belirtilerinin en yoğun
yaşandığı zaman aralığına denk gelen lise yılları aynı zamanda önemli
kararların verildiği bir dönemdir. Bir yandan yaşanan fiziksel duygusal ve
zihinsel gelişimlere uyum sağlamak bir yandan meslek seçimine karar vermek
diğer yandan da bütün dünya ile savaş halinde olmak dönemi daha da zorlu hala
getirmektedir. Fırtınalar içinde geçen bu yıllarda yaşamdan doyum almak her
zamankinden daha zor hale gelebilmektedir. Bu araştırmanın amacı ergenlik
döneminde yaşam doyumu üzerinde etkili olabilecek faktörlerin araştırılmasıdır.
Araştırma ilişkisel tarama modeli kullanılmıştır. Araştırmanın çalışma grubunu
farklı liselerde öğrenim gören 311 lise öğrencisi oluşturmaktadır. Veri toplama
aracı olarak araştırmacılar tarafından geliştirilen kişisel bilgi formu ve Türkçe
uyarlaması Köker (1991) ve Yetim (1993) tarafından yapılan Yaşam Doyumu Ölçeği Kullanılmıştır. Elde edilen
veriler SPSS 20 programı ile analiz edilmiştir. Normallik analizleri sonucunda
kullanılacak istatistiksel tekniklere karar verilmiş, değişkenler arasındaki
ilişkilerin belirlenmesinde Spearman korelasyon katsayısı, ikili değişkenlerin
incelenmesinde t-testi, 3 ve daha fazla kategorili değişkenlerde Annova
kullanılmıştır. Araştırma sonuçları yaşam doyumunun  cinsiyet değişkeni, okul türü, kardeş sayısı,
akademik başarı açısından anlamlı bir fark olmadığını göstermektedir. Aile ile
olan ilişkilerden duyulan memnuniyet ile yaşam doyumu arasında pozitif yönde
güçlü (.65)  bir ilişki olduğu
bulgulanmıştır. Ayrıca sınıf düzeyi yükseldikçe yaşam doyumu düzeyinin düştüğü
görülmüştür. Elde edilen bulgular literatür ışığında tartışılarak
yorumlanmıştır.
Pemodelan Nilai Keseimbangan antara Compound Value dan Future Value Menggunakan Aplikasi Geogebra
Authors: Ghozi Saiful
Published: October 2018

AbstractThis study discussed how to utilize Geogebra in the modeling of financial mathematics problem. The balance between compound value and future value will be determined by geometric and algebraic approach. Specific problems are presented in this article. By using slider in Geoegebra, and in same interest (i), n period when balance happened can be determined. On the applet that had been made, n period where happened balance between S and FV could automatically determined by moving principal parameter (P) and annuity (A). Keywords: compound value, future value, balance, geogebra  AbstrakArtikel ini membahas bagaimana menggunakan aplikasi Geogebra untuk membuat pemodelan matematika keuangan. Akan dihitung nilai kesetimbangan antara nilai majemuk (Compound Value) dan nilai yang akan datang (Future Value) baik dengan pendekatan aljabar maupun Geometri. Contoh yang spesifik dibahas di artikel ini. Dengan fasilitas slider yang ada pada Geogebra, pada parameter bunga (i) yang sama, didapat nilai n periode dimana terjadi kesetimbangan antara Compound Value dan Future Value. Sekaligus juga di peroleh nilai-nilai kesetimbangan pada periode tertentu. Pada applet yang telah dibuat, periode dimana terjadi kesetimbangan antara S dan FV dapat secara otomatis ditentukan dengan pergerakan parameter pokok hutang (P) dan nilai parameter cicilan anuitas (A). Kata kunci: nilai majemuk, nilai yang akan datang, kesetimbangan, geogebra
Rancangan Aplikasi Pelayanan Kesehatan Berbasis Geographic Information System (GIS) Versi Android di Kota Pekanbaru
Authors: Fitri Triyani Arita , Arsyad M Naofal
Published: October 2018

Sejalan dengan kemajuan zaman, layanan di sektor kesehatan diharuskan untuk meningkatkan kualitas. Khususnya di kota Pekanbaru perlu ada sinergi antar berbagai unit seperti rumah sakit, puskesmas, klinik, klinik, dan apotek. Pengguna layanan tidak mengetahui secara jelas lokasi layanan medis di wilayah tersebut. Termasuk kualitas masing-masing. Hal ini disebabkan luasnya daerah perkotaan dan kurangnya akses terhadap informasi. Salah satu pilihan dalam mencapai target ini adalah dengan menggunakan dukungan teknologi informasi dan komunikasi (TIK). Makalah ini bertujuan untuk menggambarkan mekanisme pengembangan perangkat lunak berbasis GIS (Sistem Informasi Geografis) yang dapat diakses pada sistem android untuk memperoleh informasi pelayanan medis. Pencapaian ini dilakukan dengan melakukan identifikasi awal, analisis dan perancangan sistem, pelaksanaan kegiatan. Identifikasi awal adalah untuk mengklasifikasikan jenis layanan medis dan posisi geografis mereka. Selanjutnya, kegiatan ini dilanjutkan dengan menganalisa kebutuhan sistem diikuti dengan pembuatan desain model aplikasi. Tahap selanjutnya adalah menerapkan hasil perancangan ke perangkat lunak. Keberadaan sistem aplikasi ini diharapkan dapat mempermudah warga Pekanbaru dalam mendapatkan berbagai informasi yang berkaitan dengan lokasi pelayanan medis, jalur terpendek (jalur) untuk mencapainya, dan kualitas (tenaga medis, fasilitas, dan kenyamanan). Selain itu, aplikasi bisa diunduh secara gratis oleh publik. Kata kunci: GIS, Layanan Medis, Android
Penentuan Total Fenol Ekstrak Umbi Bawang Dayak Hasil Ekstraksi Dengan Metode Ultrasound Assisted Extraction (UAE) dan Ultrasonic-Microwave Assisted Extraction (UMAE)
Authors: Sasongko Ashadi , Nugroho R Wahyu , Setiawan C Edra , Utami Indah W , Pusfitasari Memik D
Published: October 2018

Bawang dayak (Eleutherine americana) merupakan tanaman khas Kalimantan yang memiliki semua kandungan fitokimia antara lain alkaloid, glikosida, flavonoid, fenolik, steroid dan tanin. Senyawa fenolik berpotensi sebagai antioksidan.Ekstraksi senyawa bahan alam secara konvensional membutuhkan waktu yang lama dan dapat memicu kerusakan senyawa sehingga perlu metode yang lebih cepat dan efesien seperti metode Ultrasound Assisted Extraction (UAE) danUltrasound-Microwave Assisted Extraction (UMAE). Tujuan dari penelitian ini adalah untuk mengekstrak dan menentukan kadar senyawa fenolik dalam bawang dayak. Hasil yang optimal didapatkan dari waktu sonikasi selama 30 menit danvolume pelarut sebesar 240 mL.Penggunaan microwave dalam ekstraksi justru menimbulkan degradasi senyawa fenolik. Kata kunci: total fenol, bawang dayak, Eleutherine americana, UAE, UMAE
Perbandingan Metode Pemekatan Kuderna Danish dan Rotary Evaporator dalam Penentuan Total Petroleum Hydrocarbon(TPH) Secara Kromatografi Gas
Authors: Gunawan Adrian , Sasongko Ashadi , Sabila Rusy Dina
Published: October 2018

Total Petroleum Hydrocarbon (TPH) adalah istilah yang digunakan untuk menggambarkan keluarga besar senyawa kimia yang berasal dari minyak mentah. Metode pemekatan awal yang digunakan untuk analisis TPH adalah Kuderna Danish evaporator, yang kemudian mengalami modifikasi sehingga pemekatan dapat pula dilakukan dengan rotary evaporator. Metode percobaan pada penetapan TPH secara kromatografi gas terdiri dari preparasi, pengujian, dan pengolahan data. Parameter verifikasi yang diuji antara lain linearitas, presisi, dan akurasi. Uji beda nyata pada konsentrasi 100 dan 500 mg/L menghasilkan nilai F hitung sebesar 3.6493 dan 1.8586 dengan nilai T hitung sebesar 4.4734 dan 1.9376. Nilai T hitung pada konsentrasi 100 mg/L lebih besar dari T tabel yaitu 2.18 sehingga pada konsentrasi tersebut kedua metode menunjukkan perbedaan nyata, namun nilai F hitung dan T hitung yang diperoleh pada konsentrasi 500 mg/L lebih kecil dari nilai F tabel dan T tabel, yaitu 5.820 dan 2.18 yang menunjukkan bahwa kedua metode tidak berbeda nyata pada selang kepercayaan 95 %. Kata kunci :  dokosana, kromatografi gas, kuderna danish evaporator, rotary evaporator, total petroleum hydrocarbon
Kajian Hasil Pengukuran Undercarriage Bulldozer Komatsu D375A-5 di PT. Pama Persada Nusantara	site Batukajang
Authors: Akbar Syaeful , Anhar Wahyu
Published: October 2018

Peranan komponen undercarriage pada bulldozer sangat penting, karena sangat mepengaruhi performa kerja dari bulldozer. Komponen undercarriage merupakan consumable part atau komponen habis pakai, yang rata-rata menghabiskan biaya + 60% dari total maintenance cost. Komponen ini harus diganti jika tingkat keausannya melebihi batas yang ditentukan oleh pabrik. Jika terlambat melakukan penggantian, maka performa kerja akan menurun, dan sebaliknya jika terlalu cepat dilakukan penggantian, maka akan terjadi pemborosan biaya. Oleh karena itu penggantian komponen undercarriage secara tepat sangat penting. Program monitoring pengukuran undercarriage perlu dilakukan untuk memonitor laju tingkat keausan komponen agar dapat diprediksi kapan waktu yang tepat untuk melakukan penggantian. Sudah barang tentu alat dan metode pengkuran harus tepat, agar hasil pengukuran akurat sehingga keputusan yang diambil adalah keputusan yang tepat. Penelitian ini bertujuan menginvestigasi, apakah alat dan metode yang digunakan dalam pengukuran komponen undercarriage adalah tepat dan akurat, dan untuk membuktikannya, dapat dilakukan dengan cara menguji hasil pengukuran yang dilakukan. Jika sebaran data hasil pengukuran berdistribusi normal, maka dapat disimpulkan alat dan metode pengukuran yang dilakukan sudah tepat dan benar. Berdasarkan hasil uji normalitas data terhadap hasil pengkuran komponenn undercarriage menunjukan bahwa alat dan metode pengukuran yang dilakukan mayoritas baik, karena angka signifikannya > 0,05 sedangkan hasil pengukuran komponen link-pitch, idler, dan sprocket tidak meyakinkan, karena nilai signifikan < 0,05. Oleh karena itu perlu dilakukan penelitian lebih lanjut, apakah alat atau metodenya yang tidak tepat, ataukah mungkin tingkat keausan yang terjadi pada komponen-komponen tersebut tidak normal.
Theoretical study on the influence of sprayed water temperature and minimum temperature difference to the efficiency of a humidification – dehumidification desalination unit
Authors: Vo Quoc Kien , Le Hiep Chi , Nguyen Tuyen Van , Nguyen Trinh Thi Minh
Published: October 2018

The main content of the paper focuses on the theoretical study of the heat exchange between sprayed water and air in a humidification – dehumidification unit. The gained results [7] have been validated by using Hou data [1] and show that, in order to achieve the maximum GOR, the mass flow rate ratio between sprayed water and air depends on the sprayed water temperature and the minimum temperature difference ∆tmin. Particularly, the spayed water temperature should be from 70oC to 75oC when the minimum temperature difference ∆tmin= 5oC.
Application And Comparison Of Different Extraction Methods of capsaicin from chili, Capsicum annuum L.
Authors: Tran Khoa Anh , Nguyen Tuyet Thi Ngoc , Le Phung Thi Kim
Published: October 2018

The extraction of chili oil and capsaicin from chili using some different method such as Soxhlet, maceration, ultrasound-assisted extraction, microwave-assisted extraction and supercritical carbon dioxide with ethanol as a modifier was studied in this work. The results showed that the main component of chili oil is polyunsaturated fatty acids (representing 77.4%); mainly oleic acid and linoleic acid. The highest yield of oil and capsaicin were 0,5358g/g and 2,9534mg/g material; achieved from microwave-assisted extraction method. However, the highest selectivity was 1.77% with supercritical fluid extraction method. With additional co-solvent, the concentration of capsaicin increased but the selectivity decreased.
Assessing the effectiveness flocculation water fishery by some flocculation auxiliaries extracts from plants
Authors: Dao Trung Minh , Bui Huong Thi Thu , Ngo Dinh Kim , Nguyen Ngan Vo Chau
Published: October 2018

This study applied one chemical coagulant, PAC, and three biological coagulant aids include Moringa seed gum, Cassia seed gums and polymer. The results indicated that the best dose of PAC be used as coagulants was 480 mg/L. Using polymer as aids with PAC could remove 66.70 % of COD, 66.86 % of SS, 39.01 % of color from studied wastewater. Using Moringa seed gums as aids with PAC could remove 69.34 % of COD and, 69.61 % of SS, 36.25 % of color from studied wastewater. Similarly, using Cassia seed gums as aids with PAC could remove 70.54 % of COD, 68.34 % of SS and 35.94 % of color from fish blood. These results, showed natural products such as Moringa seed gums or Cassia seed gums would be efficient workable substitutes for synthetic chemical polymer.
Editorial: Spring 2018
Authors: Andersson Per , Nyström Sofia , Skonhoft Johannesen Hedvig
Published: October 2018

Welcome to a new volume of the Nordic Journal of Vocational Education and Training. In this first issue of 2018 we are proud to present a new associate editor of our journal. Associate professor Hedvig Skonhoft Johannesen from OsloMet - Oslo Metropolitan University in Norway has joined the editorial group, and we look forward to fruitful cooperation with the journal.

In this issue of NJVET we have seven contributions – six peer-reviewed research articles and one magazine article – from Sweden, Norway, and Denmark. The topics of the articles address assessment in empirical and analytical approaches, VET students’ as well as teachers’ boundary learning, digital storytelling as an approach to vocational didactics, drop out from vocational education, and finally the quality of vocational education.
Risk of Introduction of Bovine Tuberculosis (TB) Into TB-Free Herds in Southern Bahia, Brazil, Associated With Movement of Live Cattle
Authors: Avila Luciana N. , Gonçalves Vitor S. P. , Perez Andres M.
Published: October 2018

Bovine tuberculosis (TB) is a zoonotic disease, endemic in Brazil, with an impact on public health and trade. TB causes direct and indirect financial losses to infected farms and regions. Our study aimed at quantifying the risk of introduction of TB into TB-free herds of southern Bahia, Brazil, via movement of live cattle from other regions of the State. Results suggest that the annual risk of introducing TB into free farms of southern Bahia, either through legal or illegal trade of live cattle, is very low, varying, on average, between 0.001 and 0.006 depending on the region of origin of the animals. Noteworthy, illegal movements accounted for 90% of the risk demonstrating the importance of compliance with official regulations. These results are useful to inform both veterinary authorities and farmers in making decisions related to the regionalization of the control for TB in the country, with the ultimate goal of eliminating this major zoonotic disease from an important dairy region of Brazil.
A Mathematical Model of the Plane-Parallel Movement of an Asymmetric Machine-and-Tractor Aggregate
Authors: Bulgakov Volodymyr , Pascuzzi Simone , Nadykto Volodymyr , Ivanovs Semjons
Published: October 2018

Technological peculiarities of cultivation and harvesting of some agricultural crops make it necessary to use asymmetric machine-and-tractor aggregates. However, for the time being there is no sufficiently complete, analytical study of the steady movement of such machine-and-tractor aggregates. This necessitates the development of a theory of stable movement of the aggregates which would allow choosing their optimal kinematic and design parameters. On the basis of the results of mathematical simulation, a system of linear differential equations of the second order is obtained describing transverse displacement of the center of masses of the aggregating wheeled tractor and turning of its longitudinal axis of symmetry by some angle around the indicated center of mass, as well as the deviation angle of the rear-trailed harvester from the longitudinal axis of the tractor at any arbitrary moment of time. This system of differential equations can be applied for numerical calculations on the PC, which will make it possible to evaluate the stability of the movement of the asymmetric machine-and-tractor aggregate when it performs the technological process.
Soil Type-Dependent Interactions of P-Solubilizing Microorganisms with Organic and Inorganic Fertilizers Mediate Plant Growth Promotion in Tomato
Authors: Mpanga Isaac , Dapaah Harrison , Geistlinger Joerg , Ludewig Uwe , Neumann Günter
Published: October 2018

The use of plant growth-promoting microorganisms (PGPMs) as bio-effectors (BEs) to improve the nutrient acquisition of crops has a long history. However, limited reproducibility of the expected effects still remains a major challenge for practical applications. Based on the hypothesis that the expression of PGPM effects depends on soil type and the properties of the applied fertilizers, in this study, the performance of selected microbial inoculants was investigated for two contrasting low-fertility soils supplied with different organic and inorganic fertilizers. Greenhouse experiments were conducted with tomato on an alkaline sandy loam of pH 7.8 and an acidic loamy sand of pH 5.6 with limited phosphate (P) availability. Municipal waste compost, with and without poultry manure (PM), rock phosphate (RP), stabilized ammonium, and mineral nitrogen, phosphorus and potassium (NPK) fertilization were tested as fertilizer variants. Selected strains of Bacillus amyloliquefaciens (Priest et al. 1987) Borriss et al. 2011 (FZB42) and Trichoderma harzianum Rifai (OMG16) with proven plant growth-promoting potential were used as inoculants. On both soils, P was identified as a major limiting nutrient. Microbial inoculation selectively increased the P utilization in the PM-compost variants by 116% and 56% on the alkaline and acidic soil, while RP utilization was increased by 24%. This was associated with significantly increased shoot biomass production by 37–42%. Plant growth promotion coincided with a corresponding stimulation of root growth, suggesting improved spatial acquisition of soluble soil P fractions, associated also with improved acquisition of nitrogen (N), potassium (K), magnesium (Mg), and calcium (Ca). There was no indication for mobilization of sparingly soluble Ca phosphates via rhizosphere acidification on the alkaline soil, and only mineral NPK fertilization reached a sufficient P status and maximum biomass production. However, on the moderately acidic soil, FZB42 significantly stimulated plant growth of the variants supplied with Ca–P in the form of RP + stabilized ammonium and PM compost, which was equivalent to NPK fertilization; however, the P nutritional status was sufficient only in the RP and NPK variants. The results suggest that successful application of microbial biofertilizers requires more targeted application strategies, considering the soil properties and compatible fertilizer combinations.
Ab Initio Simulation of Attosecond Transient Absorption Spectroscopy in Two-Dimensional Materials
Authors: Sato Shunsuke A. , Hübener Hannes , De Giovannini Umberto , Rubio Angel
Published: October 2018

We extend the first-principles analysis of attosecond transient absorption spectroscopy to two-dimensional materials. As an example of two-dimensional materials, we apply the analysis to monolayer hexagonal boron nitride (h-BN) and compute its transient optical properties under intense few-cycle infrared laser pulses. Nonadiabatic features are observed in the computed transient absorption spectra. To elucidate the microscopic origin of these features, we analyze the electronic structure of h-BN with density functional theory and investigate the dynamics of specific energy bands with a simple two-band model. Finally, we find that laser-induced intraband transitions play a significant role in the transient absorption even for the two-dimensional material and that the nonadiabatic features are induced by the dynamical Franz–Keldysh effect with an anomalous band dispersion.
Interruption Cost Evaluation by Cognitive Workload and Task Performance in Interruption Coordination Modes for Human–Computer Interaction Tasks
Authors: Lee Byung Cheol , Chung Kwanghun , Kim Sung-Hee
Published: October 2018

Interruption is a widespread phenomenon in human–computer interaction in modern working environments. To minimize the adverse impact or to maximize possible benefits of interruptions, a reliable approach to evaluate interruption cost needs to be established. In this paper, we suggest a new approach to evaluate the interruption cost by cognitive workload and task performance measures. The cognitive workload is assessed by pupil diameter changes and National Aeronautics and Space Administration (NASA) task load index. Task performance includes task completion time and task accuracy in a series of controlled laboratory experiments. This integrated approach was applied to three interruption coordination modes (i.e., the immediate, the negotiated, and the scheduled modes), which were designed based on McFarlane’s interruption coordination modes. Each mode consists of cognitive and skill tasks depending on the degree of mental demands providing four different task sets of interruptive task environments. Our results demonstrate that the negotiated mode shows a lower interruption cost than other modes, and primary task type and task similarity between primary and peripheral tasks are crucial in the evaluation of the cost. This study suggests a new approach evaluating interruption cost by cognitive workload and task performance measures. Applying this approach to various interruptive environments, disruptiveness of interruption was evaluated considering interruption coordination modes and task types, and the outcomes can support development of strategies to reduce the detrimental effects of unexpected and unnecessary interruptions.
Intertextuality and Mise en Abyme in Nobuhiro Suwa’s H Story and A Perfect Couple. Between European Modernity and Japan
Authors: Muñoz-Garnica Miguel
Published: October 2018

Nobuhiro Suwa, often called “the most French of Japanese directors”, has a complex relationship with European cinematic modernity. His two feature films H Story (2001) and A Perfect Couple (2005) can provide useful case studies, as they were created in dialogue with two key references of that modernity: Hiroshima mon amour (1959, Alain Resnais) and Journey to Italy (Viaggio in Italia, 1954, Roberto Rossellini), respectively. Both films tend to confront and gloss their previous pairs, but they are also continuations of their concerns and their aesthetical discoveries. The presence of intertextuality elements connecting those films, as well as the use of myse en abyme structures are deeply analyzed in this article to attain a greater understanding on how this process of transcultural dialogue works. Besides, both films exemplify different ways of developing the references on which they are built, namely deconstruction for H Story and reconstruction for A Perfect Couple.
Effect of Residual Na+ on the Combustion of Methane over Co3O4 Bulk Catalysts Prepared by Precipitation
Authors: Choya Andoni , De Rivas Beatriz , Gutiérrez-Ortiz Jose , López-Fonseca Rubén
Published: October 2018

The effect of the presence of residual sodium (0.4 %wt) over a Co3O4 bulk catalyst for methane combustion was studied. Two samples, with and without residual sodium, were synthesized by precipitation and thoroughly characterised by X-ray diffraction (XRD), N2 physisorption, Wavelength Dispersive X-ray Fluorescence (WDXRF), temperature-programmed reduction with hydrogen followed by temperature-programmed reduction with oxygen (H2-TPR/O2-TPO), temperature-programmed reaction with methane (CH4-TPRe), ultraviolet–visible–near-infrared diffuse reflectance spectroscopy (UV-vis-NIR DRS), Raman spectroscopy and X-ray photoelectron spectroscopy (XPS). It was found that during calcination, a fraction of the sodium atoms initially deposited on the surface diffused and migrated into the spinel lattice, inducing a distortion that improved its textural and structural properties. However, surface sodium had an overall negative impact on the catalytic activity. It led to a reduction of surface Co3+ ions in favour of Co2+, thus ultimately decreasing the Co3+/Co2+ molar ratio (from 1.96 to 1.20) and decreasing the amount and mobility of active lattice oxygen species. As a result, the catalyst with residual sodium (T90 = 545 °C) was notably less active than its clean counterpart (T90 = 500 °C). All of this outlined the significance of a proper washing when synthesizing Co3O4 catalyst using a sodium salt as the precipitating agent.
Fluorescein Diacetate Hydrolysis Using the Whole Biofilm as a Sensitive Tool to Evaluate the Physiological State of Immobilized Bacterial Cells
Authors: Dzionek Anna , Dzik Jolanta , Wojcieszyńska Danuta , Guzik Urszula
Published: October 2018

Due to the increasing interest and the use of immobilized biocatalysts in bioremediation studies, there is a need for the development of an assay for quick and reliable measurements of their overall enzymatic activity. Fluorescein diacetate (FDA) hydrolysis is a widely used assay for measuring total enzymatic activity (TEA) in various environmental samples or in monoculture researches. However, standard FDA assays for TEA measurements in immobilized samples include performing an assay on cells detached from the carrier. This causes an error, because it is not possible to release all cells from the carrier without affecting their metabolic activity. In this study, we developed and optimized a procedure for TEA quantification in the whole biofilm formed on the carrier without disturbing it. The optimized method involves pre-incubation of immobilized carrier in phosphate buffer (pH 7.6) on the orbital shaker for 15 min, slow injection of FDA directly into the middle of the immobilized carrier, and incubation on the orbital shaker (130 rpm, 30 °C) for 1 h. Biofilm dry mass was obtained by comparing the dried weight of the immobilized carrier with that of the unimmobilized carrier. The improved protocol provides a simple, quick, and more reliable quantification of TEA during the development of immobilized biocatalysts compared to the original method.
The Interplay among PINK1/PARKIN/Dj-1 Network during Mitochondrial Quality Control in Cancer Biology: Protein Interaction Analysis
Authors: Salazar Celia , Ruiz-Hincapie Paula , Ruiz Lina María
Published: October 2018

PARKIN (E3 ubiquitin ligase PARK2), PINK1 (PTEN induced kinase 1) and DJ-1 (PARK7) are proteins involved in autosomal recessive parkinsonism, and carcinogenic processes. In damaged mitochondria, PINK1’s importing into the inner mitochondrial membrane is prevented, PARKIN presents a partial mitochondrial localization at the outer mitochondrial membrane and DJ-1 relocates to mitochondria when oxidative stress increases. Depletion of these proteins result in abnormal mitochondrial morphology. PINK1, PARKIN, and DJ-1 participate in mitochondrial remodeling and actively regulate mitochondrial quality control. In this review, we highlight that PARKIN, PINK1, and DJ-1 should be regarded as having an important role in Cancer Biology. The STRING database and Gene Ontology (GO) enrichment analysis were performed to consolidate knowledge of well-known protein interactions for PINK1, PARKIN, and DJ-1 and envisage new ones. The enrichment analysis of KEGG pathways showed that the PINK1/PARKIN/DJ-1 network resulted in Parkinson disease as the main feature, while the protein DJ-1 showed enrichment in prostate cancer and p53 signaling pathway. Some predicted transcription factors regulating PINK1, PARK2 (PARKIN) and PARK7 (DJ-1) gene expression are related to cell cycle control. We can therefore suggest that the interplay among PINK1/PARKIN/DJ-1 network during mitochondrial quality control in cancer biology may occur at the transcriptional level. Further analysis, like a systems biology approach, will be helpful in the understanding of PINK1/PARKIN/DJ-1 network.
An Empirical Study on Security Knowledge Sharing and Learning in Open Source Software Communities
Authors: Wen Shao-Fang
Published: October 2018

Open source software (OSS) security has been the focus of the security community and practitioners over the past decades. However, the number of new vulnerabilities keeps increasing in today’s OSS systems. With today’s increasingly important and complex OSS, lacking software security knowledge to handle security vulnerabilities in OSS development will result in more breaches that are serious in the future. Learning software security is a difficult and challenging task since the domain is quite context specific and the real project situation is necessary to apply the security concepts within the specific system. Many OSS proponents believe that the OSS community offers significant learning opportunities from its best practices. However, studies that specifically explore security knowledge sharing and learning in OSS communities are scarce. This research is intended to fill this gap by empirically investigating factors that affect knowledge sharing and learning about software security and the relationship among them. A conceptual model is proposed that helps to conceptualize the linkage between socio-technical practices and software security learning processes in OSS communities. A questionnaire and statistical analytical techniques were employed to test hypothesized relationships in the model to gain a better understanding of this research topic.
Combination Therapy for Reconstructive Periodontal Treatment in the Lower Anterior Area: Clinical Evaluation of a Case Series
Authors: Nemcovsky Carlos E. , Beitlitum Ilan
Published: October 2018

Clinically, periodontal regeneration may be achieved by the application of barrier membranes, grafts, wound-healing modifiers, and their combinations. Combination therapy refers to the simultaneous application of various periodontal reconstructive treatment alternatives to obtain additive effects. This approach may lead to assemblage of different regenerative principles, such as conductivity and inductivity, space provision and wound stability, matrix development and cell differentiation. The application of autogenous connective tissue grafts during periodontal regenerative treatment with enamel matrix proteins derivative (EMD) has been previously reported. The present case series present a modified approach for treatment of severe periodontally involved lower incisors presenting with thin gingival biotype, gingival recession, minimal attached and keratinized gingiva width and muscle and/or frenum pull. In all cases a combination therapy consisting of a single buccal access flap, root conditioning, EMD application on the denuded root surfaces and a free connective tissue graft was performed. Clinical and radiographic outcomes were consistently satisfactory, leading to probing depth reduction, clinical attachment gain, minimal gingival recession, increased attached and keratinizing gingival width, elimination of frenum and/or muscle pull together with radiographic bone fill of the defects. It may be concluded that the present combination therapy for reconstructive periodontal treatment in the lower anterior area is a valuable alternative for indicated cases.
Synchronous Reference Frame Repetitive Control of a Single-Phase Three-Level Dual-Buck Photovoltaic Inverter
Authors: Lee Jung-Yong , Cho Younghoon
Published: October 2018

This paper proposes a synchronous reference frame (SRF) control strategy for a single-phase, three-level, dual-buck photovoltaic (PV) inverter. The concept of virtual d-q transformation is adapted to the current control of the inverter, and the repetitive controller is implemented in the SRF. With the proposed control strategy, the memory allocation quantity for the repetitive controller is decreased and the capability of the current reference tracking is maximized. Thus, the proposed method significantly reduces the total harmonic distortion (THD) of the output current in both the continuous conduction mode (CCM) and the discontinuous conduction mode (DCM). In addition, the distortion of the output current is mostly composed of odd harmonics. Odd harmonic expressed to the even harmonic in SRF can be calculated using Park’s transformation. Therefore, a repetitive controller can improve dynamics by considering only even harmonic components in SRF rather than including all harmonics. The simulation and the experimental results verify the effectiveness of the proposed control strategy. The proposed method not only reduces the THD of the output current in both the CCM operation and the DCM operation, but also improves the dynamics of the current controller.