bluuebunny/crossref_metadata_2025 huggingface dataset:
Ocorrência de animais com anticorpos anti-Leptospira spp. na região de Uberlândia, MG, 2011-2014
Authors: Mendes Alex Ferreira , Buiatte Ana Beatriz Garcez , Gomes Dayane Olímpia , Ciuffa Andreia Zago , Reis Thais Fernanda Martins dos , Lima Anna Monteiro Correia
Published: May 2019

A Leptospirose é uma doença cosmopolita de grande relevância para a Medicina Veterinária por ocorrer em diversas espécies domesticas e silvestres, podendo causar prejuízos nos setores produtivos e preocupações para a saúde pública. Assim, o objetivo do trabalho foi avaliar a frequência de bovinos, bubalinos, caninos selvagens, caninos, caprinos, equinos, felinos, ovinos, roedores e suínos sororeagentes ao teste para leptospirose e quais sorogrupos foram mais prevalentes. Para tal, foram compilados os resultados dos exames de leptospirose obtidos pelo teste de Soroaglutinação Microscópica realizados no Laboratório de Doenças Infectocontagiosas da Faculdade de Medicina Veterinária da Universidade Federal de Uberlândia, entre os anos de 2011 a 2014. A espécie que apresentou maiores índices de soropositividade foi a bovina, o sorogrupo mais prevalente foi o Sejroe.
Transmission Control Protocol Performance Monitoring for Simulated Wired University Computer Network using OPNET
Authors: Hasan Ammar , Rashid Tarik A. , Ismael Birzo , AL-Salihi Nawzad K.
Published: May 2019

Computer networks need protocols to govern all transmission and presentation processes. The transmission control protocol (TCP) is one of the most important protocols that have the compatibility to work with all types of computer networks, overcoming all architectural and operating system differences. Nowadays, networks depend on the TCP protocol to control data flow between all types of connected computers, whether it is client or server, over any type of media whether it is wired or wireless networks, for all network topologies. A simulation of a university campus network has been conducted to determine TCP protocol features; those features are taken into consideration as one of the most important network parameters. In all digital networks, the data transmission is not a continuous transmission – instead, it is a discreet transmission, presenting itself as packets. These packets transfer and propagate within the network between computers, and network nodes using the TCP protocol depending on the address, which is embedded in its header. TCP has a great influence on the network speed. The network simulator OPNET provides an easy way of campus design, predicting, and estimating the performance of networks in a university campus environment. In this research, wiredconnections reach all computer network users at fixed points to maintain higher Mbps and ensure reliable communications between all the campus network nodes, as well as to increase the overall network performance taking into account the future expansions for the university campus network design.
Political Stability and Security Status
Authors: Biro Ribaz Chato
Published: May 2019

Political stability and security have become important factors of sustainable economic progress for the developing countries, especially states with the experience of war and instability. Kurdistan Region of Iraq (KRI) as a semi-autonomous region tried to improve the level of political stability and security status, to gain more foreign direct investment (FDI) and economic growth. Consequently, KRI has become the safest region in Iraq and enjoyed political stability and safety. Therefore, during the last decade, KRI has occurred as a new destination of FDI in the Middle East and has received notable progress in most of the economic sectors. The aim of this study is to evaluate the role of political stability and security status on the FDI attractions and their consequences on economic development. However, it will investigate the factors that make the KRI safer than the rest of Iraq.
Kajian Upaya Peningkatan Pelayanan Angkutan Kota Di Balikpapan Propinsi Kalimantan Timur
Authors: Noviyanti Noviyanti
Published: May 2019

CihJ of Balikpapan in zst Kalimantan Province is a cihJ of industn;, trade, EerUices and tourism, hasa ven; strategic position and has great economic potential both locally, regionally, nationally andinternationally. With the development of East Kalimantan Balikpapan particularly influential onvarious aspects including the transportation sector. To develop and realize the transportation StJStemnecessan; to determine appropriate policies and planning, so that the implementation of developmentcan be implemented with efficient transportation. To establish poliaj and good planningslwuld be supported btJ a number of data and information such as travel demand patterns andbottom-up approach, so that wisdom really made in accordance with local needs.Data were analyzed using Qualitative Descriptive Analysis Method is reviewing the condition ofurban transportation management and characteristics of the study area, too many overlapping routepermit, the existence of terminals and facilities that are not in accordance with the regulations, transportationplanning is not in accordance with the forecast demand and needs. whereas the expectedresults of the study are compiled in urban transportation planning effective and efficienJ in the studiedregion and as inputs for the improvement of urban transportation planning in order to improve transportation services.
Discourse Features Of Women’s Language In The Social Media As Influenced By Formal Education
Authors: Indrayani Maria Harumi , Simanjuntak Risa Rumentha
Published: May 2019

This research has a purpose to find the ways women express themselves through written form in social media, relationship between educational backgrounds of women and their language choice, and the markers of the women’s discourse. This research uses qualitative method by doing stratified random sampling and giving questionnaires. The data is analyzed by analyzing participants’ language choice in social media post and formal education status, then finding the similarities and differences, analyzing the relation between participants’ formal education status and their language choice in social media post, and analyzing the markers of women’s discourse in social media. The results of this study found that some women uses coherence and cohesive consistently, while some women choose to have very casual writing style. This study confirms that women tendency to use more standard forms is more likely to be driven by their awareness of using proper language, rather than as a way of claiming such status (Holmes, 2008). Lastly, this study figured that women usually use intra-sentential code-switch more often and women’s tendency to be more sensitive is the caused why women used a lot of adjective words related to feelings.
Need Analysis as the Foundation to Develop Supplementary Material for Tenth Grade Students
Authors: Mulyaningsih Tri , Yuliana Yohanes Gatot Sutapa
Published: May 2019

This research used a descriptive method to explore the needs of tenth grade students in learning English writing. In order to achieve this purpose, classroom observation, questionnaire, and interview were conducted to collect the data. In addition, several related documents such as 2013 curriculum, syllabus, the current English textbook used were analyzed. The results showed that the students are in intermediate level. Moreover, they had difficulties to write in correct grammar. Furthermore, there was also a need to provide the topics related to art and culture and daily life in the language material. Malay culture became the choice of the students to be the theme of their learning material. Moreover, the learning material needed to be completed with the teacher’s book which could give guidance to the teacher about the instruction or method that could be used in the classroom. Finally, the findings would be used as the base for developing the English writing material.
Kemampuan Siswa SMA IPA dan IPS dalam Menjawab Soal HOTS Mata Pelajaran Bahasa Indonesia Berdasarkan Hasil UN 2017
Authors: Safari Safari
Published: May 2019

Tujuan utama studi ini adalah untuk mengetahui apakah terdapat perbedaan rata-rata skor kemampuan siswa SMA IPA dan IPS dalam menjawab soal HOTS mata pelajaran Bahasa Indonesia hasil UN 2017? Populasi penelitian ini adalah siswa SMA yang sedang belajar pada tahun 2016, sedangkan sampelnya adalah siswa SMA kelas 12 yang mengikuti UN 2017. Berdasarkan hasil analisis t-tes dengan program SPSS dan Mplus diperoleh hasil seperti berikut. Pertama, berdasarkan nilai rata-rata nasional menunjukkan bahwa kemampuan siswa SMA IPA dalam menjawab soal HOTS adalah lebih tinggi (mean 68,18, standar deviasi 11,66) daripada kemampuan siswa SMA IPS (mean = 55, 68 standar deviasi 12,69). Nilai ini berdasarkan klasifikasi hasil ujian nasional masih tergolong cukup dan kurang. Kedua, perbedaan kemampuan siswa SMA IPA dan IPS terhadap kemampuan “menjawab soal HOTS mata pelajaran Bahasa Indonesia” adalah terbukti. Artinya terdapat perbedaan yang signifikan kemampuan siswa SMA IPA dan IPS terhadap kemampuan “menjawab soal HOTS” (P-value= 0,00). Kesimpulan penelitian ini adalah terdapat perbedaan yang signifikan kemampuan siswa IPA dan IPS dalam menjawab soal HOTS mata pelajaran Bahasa Indonesia hasil UN 2017. Kemampuan siswa IPA dan IPS dalam menjawab soal HOTS adalah cukup dan kurang.
Penerapan Analisis Teori Klasik Model Rasch dan Computer Based Test Moodle: Sebuah Pilot Studi
Authors: Ramdani Zulmi , Widyastuti Tria , Ferdian Flavina Rinta
Published: May 2019

Keberhasilan dalam sebuah proses pembelajaran ditentukan oleh penggunaan media dan teknologi yang sesuai. Model Tes Berbasis Komputer Moodle merupakan suatu strategi evaluasi yang digunakan untuk menentukan kapasitas dan kompetensi siswa lebih cepat dan lebih efisien. Studi deskriptif dilakukan terhadap 122 mahasiswa yang mengambil mata kuliah metodologi penelitian dengan menggunakan program tersebut. Hasil menunjukkan bahwa tidak terdapat banyak perbedaan secara statistik dengan menggunakan pendekatan klasik. Selain itu, analisis dengan menggunakan Model Rasch juga tidak banyak berbeda dengan analisis sebelumnya tetapi Model Rasch ini mampu melihat secara spesifik persentase kemampuan siswa dengan aitem, beserta aktivitas menebak jawaban tertentu. Skor dalam koefisien reliabilitas dan properti psikometri lainnya mengasumsikan bahwa model berbasis komputer ini efektif untuk melihat sejauhmana perubahan-perubahan dalam pembelajaran itu dapat dilihat. Hal lainnya yang juga ditemukan adalah bahwa faktor kesiapan dan pengetahuan siswa dalam menggunakan program komputer ini sama pentingnya dalam mendorong dan meningkatkan program dan kualitas pendidikan dengan model berbasis komputer ini.
KEARIFAN LOKAL SUKU SASAK SEBAGAI MODEL PENGELOLAAN KONFLIK DI MASYARAKAT LOMBOK
Authors: Zuhdi Muhammad Harfin
Published: May 2019

Kearifan lokal sebagai suatu kekayaan budaya yang mengandung nilai pandangan, kebijakan, dan kearifan hidup masyarakat dalam banyak ragam variannya, seperti tercermin dalam konsep krama, sesenggak. perteke, atau lelakaq. Namun saat ini kearifan lokal masih belum difungsikan secara optimal, padahal kearifan lokal dapat dijadikan rujukan sebagai model dalam pengelolaan konflik dan masalah sosial di masyarakat. Keterlibatan kearifan lokal dapat diupayakan melalui pembangunan perdamaian untuk mencegah dan melokalisir konflik di masyarakat, karena melibatkan kearifan lokal terbukti mampu mempertahankan harmoni sosial. Artikel ini berupaya mendeskripsikan kearifan lokal suku Sasak dengan pendekatan kualitatif berbasis content analisis. Dalam upaya pengelolaan konflik harus ada keterlibatan tokoh agama dan tokoh adat dalam mendorong hadirnya peningkatan apresiasi masyarakat terhadap kearifan lokal. Oleh karena itu, untuk menjadikan kearifan lokal sebagai model dalam pengelolaan konflik, maka perlu direvitaliasi dan disosialisasikan secara sistematis dan massif sehingga dapat fungsional sebagai model pengelolaan konflik di masyarakat Lombok. Pendekatan multikultural berbasis kearifan lokal ini merupakan model penting yang dapat dimanfaatkan untu pngelolaan konflik di wilayah ini.Local wisdom can be defined as a local cultural treasure that contains the values of life policy, life viewpoints, and living wisdom. Local wisdom not only applied locally to a particular culture or ethnic, but also to be a cross-cultural or cross-etnical known as the concept of Bhineka Tunggal Ika (Unity in Diversity) in which there are teachings of mutual assistance, tolerance, hard work, and mutual respect. Local wisdom can be used as a reference in solving problems in the community.In the related reconciliation efforts, it was revealed that there was the involvement of religious and traditional leaders in encouraging the enhancement public appreciation of local wisdom. The local wisdom of the Sasak tribe varies widely, as reflected in the concept of krama, sekenggak. perteke, or lelakaq. Sasak local wisdom needs to be revitalized and socialized systematically and synergistically by traditional leaders, religious leaders and stakeholders in the region to function as a model of conflict management in Lombok society. This multicultural approach based on local wisdom is an important model that can be utilized to minimize conflicts in the region.
Making Foreign Aid Work: Issues of Cost Effectiveness of Educational Aid in Pakistan
Authors: Khan Asif , Baig Tasawar , Beg Saadia , Khan Hafiz Ghufran Ali
Published: May 2019

The quality of inclusive and accountable institutions in a donor-recipient country determines the effectiveness of foreign aid. This study examined whether the role of donor agency or the implementing agency was more helpful in the successes of two foreign-funded educational interventions in Northern Pakistan. The two interventions, each focusing on teachers’ development program and the capacity development of principals, were funded by two different international donors. The study also provided a comparison of the two international donors working styles and their strategies applied for the execution of their respective projects. The findings of the study, which were generated through qualitative methods, noted wide variations not only in the working strategies of the two donors, but also the role of the executing agency. It was noted that multiple factors determined the productivity of the two projects; one of the elements that contributed the success or failure of the two project was their design or road map. Based on the findings of this study, it was maintained that a proactive role of both the entities is crucial for the success of such interventions.
Brand-Centered Human Resource Practices and Brand Citizenship Behavior: The Notion to Develop Competitive Advantage
Authors: Rehman Asad Ur , Salleh Salniza Bt Md. , Ahmad Norzieiriani bt.
Published: May 2019

The Brand citizenship behavior (BCB) is relatively a new aspect in marketing literature. Researchers have given a label of BCB to the discretionary behavior that employees’ exhibit for the successful delivery of brand promise. In internal branding, the role of an employee is recognized as critical in delivering the service as promised by the brand. As practitioners and academicians argue that, an employee’s brand-aligned behavior that goes above and beyond the job responsibility can be an asset for the company and is difficult for competitors to imitate. Drawing on employees’ brand- aligned behavior to build the strong organization brand this study conceptualized that, the successful implementation of internal branding doctrine could be strengthened by brand-centered human resource practices and develop a new route for companies to build the competitive advantage. Thus, the study found that the human resource practices such as fair recruitment process, training programs, and socialization practice could enhance the employees’ brand citizenship behavior.
DAMPAK CYBERBULLYING TERHADAP DEPRESI PADA MAHASISWA PRODI NERS
Authors: Aini Khusnul , Apriana Rista
Published: May 2019

Perkembangan jejaring sosial saat ini sangat pesat, dan paling banyak pengguna jejaring sosial adalah remaja dalam hal ini adalah mahasiswa. Jejaring sosial juga dijadikan sebagai tempat mengeluarkan segala bentuk luapan emosi, dan sering juga mengungkapkan kemarahan dalam bentuk caci maki dan hinaan pada orang lain yang disebut dengan cyberbullying. Penelitian ini bertujuan untuk mengetahui dampak cyberbullying terhadap depresi mahasiswa Prodi Ners STIKES Widya Husada Semarang. Teknik dalam pengambilan sampel  menggunakanpurposive sampling dan sampel dalam penelitian ini adalah mahasiswa tingkat I dan II yang berjumlah 70 mahasiswa.Penelitian ini menggunakan desain studi cross sectional, kuantitatif dengan menggunakan instrument penelitian berupa kuisioner tentang pengalaman cyberbullying dan  pengukuran kejadian depresi berdasarkan Beck’s Depression Scale. Data dianalisi dengan uji Range Spearman. Menunjukkan hasil p-value 0,02 (<0,05)dan r= 0,273. Kesimpulan yang dapat diambil dalam penelitian ini adalah cyberbullying berdampak pada kejadian depresi pada mahasiswa.Dari hasil tersebut diharapkan upaya pencegahan cyberbullying pada mahasiswa serta penanganan kasus depresi yang diakibatkan karena kejadian cyberbullying. Kata kunci: Dampak, cyberbullying, depresi THE IMPACT OF CYBERBULLYING TO STUDENTS’ DEPRESSION OF NURSING PROGRAM HIGHER SCHOOL ABSTRACTThe development of social networking today is very fast, and  the most of social networking users in this case are students. Social networks also serve as the point of issuing any form of emotion, and often express anger in the form of verbal abuse and insults at others called cyberbullying. This study aims to determine the impact of cyberbullying against  students’ depression of Nursing Program  Widya Husada School of Health Sciences. Techniques in sampling used  purposive sampling and the sample in this study were students of level I and II which amounted to 70 students. This study used cross sectional study design, quantitative by using research instrument in the form of questionnaire about cyber bullying experience and measurement of depression incidence based on Beck's Depression Scale. Data were analyzed by quantitative descriptive with Spearman Range test. The result shown p-value 0,02 (<0,05) and r= 0,273. The conclusions of this research is cyberbullying impact on the incidence of depression of students. From the results of this study is expected to prevent cyber bullying efforts on students and handling cases of depression caused by the incidence of cyber bullying. Keywords : Impact, cyberbullying, depression
Perancangan Jaringan Wifi Dengan Menggunakan Mikrotik Pada SMP Negeri 3 Mallusetasi Kabupaten Barru
Authors: Musdalifa Musdalifa , Panu Surahmin Adna
Published: May 2019

Penelitian ini bertujuan untuk melakukan (1) Perancangan Topologi jaringan WIFI dengan Menggunakan Router Mikrotik Pada SMPN 3 Mallusetasi kabupaten Barru, (2) Instalasi dan konfigurasi Router Mikrotik ke jaringan Pada SMPN 3 Mallusetasi kabupaten Barru. Metode penelitian yang digunakan meliputi; studi pustaka, wawancara, dan studi lapangan. Studi pustaka dilakukan untuk mengumpulkan basis pengetahuan dalam perancangan. Studi lapangan dilakukan untuk mengumpulkan data dan informasi mengenai kondisi yang ada dan juga evaluasi  atas perancangan yang dihasilkan. Hasil yang dicapai adalah rancangan lokasi accsess point dan area jangkauan accsess point. Kesimpulan yang didapat adalah dengan melakukan pembangunan sistem jaringan nirkabel untuk proses belajar mengajar di SMPN 3 Mallusetasi Kabupaten Barru, sehingga pembelajaran computer dan internet di sekolah menjadi lebih optimal.
Peruvian Subduction Surface Model for Seismic Hazard Assessments
Authors: Vergaray Astupina Luis Fernando , Aguilar B. Zenón , Cornejo Renzo S.
Published: May 2019

Throughout the years seismic hazard calculations in Peru have been developed using area sources models, having to date a great variety of models, however, since they are discretized planar models, they cannot adequately represent the continuity and subduction characteristics of the Nazca Plate. The main objective of this work is the developing of a surface subduction model (SSM), useful for seismic hazard assessments as well as the revision and control of previous models used in this sort of assessments. In this study a spatial interpolation was performed employing the Local Polynomial Interpolation method to capture short-range variation in addition to long-range trends. The data base is based on the compilation of seismic catalogs from Peruvian and international institutions such as the IGP, the USGS, the ISC and others, subsequently, in order to have independent events the elimination of duplicate events, aftershocks and foreshocks was carried out. Then, by interpolation of the focal depths of the independent events, a subduction surface model (SSM) was generated as well as a Standard Error Surface which supports a good correlation of the model. Furthermore, 14 transversal sections of the SSM was employed to compare with the hypocenter’s distributions, evidencing a good correlation with the spatial distribution of the events, in addition to adequately capturing the subduction characteristics of the Nazca Plate. Finally, a comparison was made between 2 Peruvian area models for seismic hazard and SSM developed in the present research, evidencing that seismic source models of the area type have deficiencies mainly in the depths they consider, thus is recommended the use of the present model for future seismic hazard assessments.
Physiochemical Characterization and Dematerialization of Coal Class F Flyash Residues from Thermal Power Plant
Authors: Akhtar Mohammad Nadeem , Akhtar Janisaar , Tarannum Nazia
Published: May 2019

Class F flyash has a low percentage content of lime and is considered as a leading category of flyash generated in India with an average utilization of nearly 55% of flyash produced by the coal-burning power plant. The coal Class F flyash residue sample has been collected from Harduaganj, Thermal Power Station India. The paper illustrates the outcome of the study carried out to examine all the relevant features of the chemical and physical properties of Class F flyash sample. Elementary quantitative results from point analysis, SEM/EDS, FTIR, and pH analysis have been done in the chemical analysis of the study. The physical characterization of the sample is done by several experimental approaches to compare all the relevant features of Class F flyash sample and common soil. The main objective of this study is to evaluate whether the locally available Class F flyash from Harduaganj Thermal Power Station India, will provide satisfactory performance in fully or partially replacement of common soil. The performance evaluation of flyash and soil in different test results included bulk density, specific gravity, plasticity, maximum dry density, optimum moisture content, and permeability in accordance with the relevant IS or ASTM standards. Finally, the reported research recommended the selection of Class F flyash sample with low-lime content that provided the close correlation of its physical properties to the common soil.
A Comparative Study on the Flexural Behaviour of Rubberized and Hybrid Rubberized Reinforced Concrete Beams
Authors: Alasmari Hasan Aied , Abu Bakar B. H. , Noaman A. T.
Published: May 2019

This paper aims to investigate the flexural behaviour of the rubberized and hybrid rubberized reinforced concrete beams. A total of fourteen beams, 150×200 mm in cross-section with 1000 mm in length, were subject to a laboratory test over an effective span of 900 mm. The sand river aggregate was replaced by 10%, 12.5%, and 15% of crumb rubber (volume).   The hybrid structure contained two double layers: 1) rubberized reinforcement concrete at the top layer of the beam and 2) reinforcement concrete at the bottom layer of the concrete beam. The static responses by the flexural test of all the beams were evaluated in terms of their fresh properties, failure patterns, total energy, flexural strength, stiffness, and ultimate deflection, modulus of rupture, strain capacity, and ductility index. The results showed that there were improvements when the hybrid beams were used in most cases such as failure pattern, ultimate load, stiffness, modulus of rupture, and stress. The rubberized concrete beams showed improvements in the strain capacity as illustrated in strain gauges and stress-strain curves, toughness, ultimate deflection, and ductility index. The findings of the study revealed an improved performance with the use of the hybrid beams. This has resulted in the implementation of innovative civil engineering applications in the engineering sustainable structures.
Helikobakter pilori Tedavisinde Kullanılan Klaritromisin, Amoksisilin ve Lansorazolün İnsan İdrar Numunesinde Çok Değişkenli Kalibrasyon Yöntemleri ile Kantitatif Tayini
Authors: PEKCAN ERTOKUŞ Güzide
Published: May 2019

Bu çalışmada kronik
aktif gastrit ve peptik ülser hastalığında rolü olan Helikobakter pilorinin yok edilmesi için kullanılan klaritromisin,
amoksisilin ve lansoprazol etken maddelerinin eş zamanlı spektrofotometrik
olarak tayini yapılmıştır. Elde edilen verilere, çok değişkenli kalibrasyon
yöntemleri - kemometrik metotlar başarı ile uygulanmıştır.
Absorbans-konsantrasyon arasındaki ilişkiden yola çıkılarak sentetik karışım
yardımıyla idrar numunesinde her bir aktif maddenin tayini gerçekleştirilmiş ve
veriler MLR (Çoklu doğrusal regresyon), , PLS (Kısmi en küçük kareler yöntemi)
ve PCR (Temel bileşen regresyonu) ile değerlendirilmiştir. MLR (Çoklu doğrusal
regresyon), PLS (Kısmi en küçük kareler yöntemi) ve PCR (Temel bileşen
regresyonu) kemometrik kalibrasyon metotlarındandır ve bu yöntemlerle elde
edilen sonuçlar son derece hızlı ve en önemlisi güvenilirdir.
Sabit Bekleme Zamanlı Tip II Sayaç Sürecinde Ortalama Değer ve Varyans Fonksiyonlarının Parametrik Tahmini
Authors: PEKALP Mustafa Hilmi , AYDOĞDU Halil
Published: May 2019

Bu çalışmada gecikmeli bir
yenileme süreci olarak oluşturulan sabit bekleme zamanlı tip II sayaç sürecinin
ortalama değer ve varyans fonksiyonları analitik olarak elde edilmektedir. Gecikmeli
yenileme süreçleri ile ilgili uygulamalarda genellikle dağılım fonksiyonları
şekilsel olarak bilinirken bazı parametreleri bilinmez. Bu durumda ortalama
değer ve varyans fonksiyonları veriden tahmin edilmek zorundadır. Bu çalışmada
tip II sayaç sürecinin ortalama değer ve varyans fonksiyonları analitik olarak
elde edildikten sonra, analitik ifadelerine bağlı biçimde, parametrik olarak bu
fonksiyonların değerlerinin tahmin edilmesi üzerinde durulmakta ve bazı tahmin
ediciler önerilmektedir. Bu tahmin edicilerin performansları küçük örneklem
hacimleri için yan, hata kareler ortalaması kriterlerine göre bir simülasyon
çalışması ile değerlendirilmektedir.
Tanacetum kotschyi (Boiss.) Grierson ve Tanacetum tomentellum (Boiss.) Grierson Ekstraktlarının Fenolik Madde İçeriği ve Biyolojik Aktiviteleri
Authors: SAVCI Ahmet , ALAN Yusuf , KOÇPINAR Enver Fehim , KURŞAT Murat , TOPDEMİR Sıraç , KARATAŞ Mizbah , ÇAKMAK Birsen
Published: May 2019

Bitkiler, iyileştirici
etkilerinden dolayı, eski zamanlardan beri tedavi amaçlı olarak kullanılmaktadır.
Bu çalışmada Bitlis ve Van illerinden toplanan Tanacetum kotschyi (Boiss.) Grierson (ateş pireotu) ve Tanacetum tomentellum (Boiss.) Grierson
(yıldızlı pireotu)’dan elde edilen etanol ekstraktlarının 14 farklı fenolik
içeriği HPLC ile belirlenmiştir. Fenoliklerin geneli antioksidan olarak
bilindiğinden dolayı bitkilerin antioksidan özellikleri de bilimsel pek çok
çalışmada önemli sayılmıştır. Bu nedenle soxhlet ekstraksiyon metodu ile bu
bitkilerden etanol ekstraktları hazırlanmış ve in vitro şartlarda biyolojik aktiviteleri araştırılmıştır. Bu
amaçla ilk olarak bu ekstraktların total antioksidan aktiviteleri, DPPH ve ABTS
radikal giderme aktiviteleri, FRAP ve CUPRAC indirgenme metodları ile demir ve
bakır indirgeme kuvvetleri ölçülerek antioksidan güçleri, antioksidan oldukları
kanıtlanmış çeşitli standartlar (Bütillenmiş hidroksianisol: BHA, Bütillenmiş
hidroksitoluen: BHT ve α-tokoferol: α-toc) ile karşılaştırılmıştır. Toplumda
bitkiler, mikroorganizma kaynaklı pek çok cilt hastalığı başta olmak üzere,
günümüzün en önemli hastalıklardan olan kanser gibi DNA hasarına bağlı bazı
hastalıklarda da alternatif bir tedavi yöntemi olarak kullanıldığı ve bu
yönüyle bitkilerin pek çok farmakolojik araştırmanın ilgi odağı olduğu
yadsınamaz bir gerçektir. Bu nedenle bu çalışmada ekstraktlar, farklı türlerden
müteşekkil olan 10 adet mikroorganizma üzerinde denenerek antimikrobiyal
aktiviteleri, Pbr322 plazmid DNA’sı üzerinde denenerek DNA koruyucu
aktiviteleri araştırılmıştır. Fenolik sonuçlarına göre T. kotschyi ve T.
tomentellum ekstraktlarında gallik asit, T. kotschyi ekstraktında ise salisilik asit varlığı tespit
edilememiştir. Buna ek olarak bazı antioksidan aktivite sonuçlarında her iki
bitkiden elde edilen etanol ekstraktlarının standartlara benzer aktiviteye
sahip olduğu belirlenmiştir. Oyuk agar metodunun kullanıldığı antimikrobiyal
aktivite sonuçlarına göre; T. tomentellum
ekstraktının Staphylococcus aureus üzerinde, T. kotschyi ekstraktının ise Candida
albicans ve Klebsiella pneumonia
üzerinde en iyi aktiviteyi sergilediği tespit edilmiştir. Ayrıca T. Kotschyi ekstraktı Saccharomyces cereviciae üzerinde
herhangi bir aktivite göstermezken, genel olarak ekstraktların bütün test
mikroorganizmaları üzerinde antimikrobiyal etkiye sahip olduğu gözlenmiştir.
Son olarak ekstraktların DNA üzerindeki koruyucu etkisi araştırılmıştır. T. kotschyi ekstraktının, plazmid DNA
üzerinde koruyucu bir etkisinin olmadığı, T.
tomentellum ekstraktının ise H2O2+DMSO’un DNA
üzerindeki süpürücü etkisini ortadan kaldırarak kararlı hale gelmesinde etkili
olduğu tespit edilmiştir. Bu çalışmadan elde edilen veriler, ekstraktların
genel olarak güçlü biyolojik aktivitelere sahip olduğunu göstermektedir.
Lineer-Kuadratik Anizotropik Saçılma için Kritiklik Probleminde Yansıtıcı Özdeğerleri
Authors: TÜRECİ R. Gökhan
Published: May 2019

Tek-hızlı nötron
transport teoride son zamanlarda çalışılan lineer-kuadratik anizotropik saçılma
fonksiyonu belirli kritik levha kalınlıkları için yansıtıcı öz değerlerini
çözmek amacıyla kullanılır. Lineer-kuadratik anizotropik saçılma özelliği
gösteren nükleer materyale sahip bir düzlem reaktör göz önüne alınmıştır ve
problem yansıtıcı sınır koşullarını içermektedir. Amaç belirli ikincil nötron
sayılarına ve belirli reaktör kalınlıklarına göre yansıtıcı katsayılarını
bulmaktır. Sayısal sonuçlar Modified FN yöntemi kullanılarak
bulunmuştur.
Quality Control Tests of SPECT- CT
Authors: TUNÇMAN GENÇ Duygu , KOVAN Bilal , DEMİR Bayram , TÜRKMEN Cüneyt
Published: May 2019

The one of the aim of
nuclear medicine is diagnosis of an abnormal metabolic activities in target
organs.  In a routine nuclear medicine
imaging procedure, a radiopharmaceutical is used. Radiopharmaceutical’s
radionuclide part emits gamma radiation. This radiation is dedected by Gamma
Camera or Single Photon Emission Computed Tomography (SPECT). A computed
tomography (CT) device was added to the SPECT(SPECT- CT). To combine anatomical
images. Image quality of this device is important for accurate diagnosis and
treatment of diseases. By means of quality control tests, performance changes
of device are dedected. A various quality control parameters such as
uniformity, sensivity, resolution, linearity have been developed for Gamma
cameras, SPECT. Quality control test results are should be verify by comparing acceptable
results. In this study, quality control tests of SPECT-CT are performed as
proposed by the National Electrical Manufacturers Association ( NEMA) and it was
aimed to investigate some correction methods.
Polimerik Nanoküreler Üzerine Enzim İmmobilizasyonu ve Optimizasyonu
Authors: KURNAZ YETİM Nurdan , HASANOĞLU ÖZKAN Elvan , SARI Nurşen
Published: May 2019

Enzimler, pek çok
endüstride kullanılan, maliyetleri oldukça yüksek olan önemli materyallerdir.
Katalitik tepkimelerde enzimler için şartlar uygun olsa bile yüksek sıcaklık,
yüksek veya düşük pH ve organik/inorganik çözücülerin varlığında enzimler aktifliklerini
kolaylıkla kaybedebilirler. İmmobilizasyon işlemi ile birlikte, enzimlerin
ekonomik açıdan kullanılabilirliğini sağlamak mümkündür. Bu amaçla,
(aminometil) polistiren (APS) kaynaklı nanokürelere glukoz oksidaz (GOx) enzimi
immobilize edildi ve optimizasyon parametreleri (pH, sıcaklık, tekrar kullanım
sayısı, depolama kararlılığı, substrat derişimi) belirlendi. Serbest ve
immobilize enzim için Michaelis-Menten eşitliği ile Km
ve Vmak değerleri hesaplandı. Özellikle Pt(IV) iyonu içeren
immobilize enzimin substratına karşı yüksek ilgi gösterdiği tespit edildi. 12
ay sonunda immobilize enzimlerin yaklaşık % 85 aktifliklerini korudukları
görüldü.
MoO3 Tampon Tabakasının CdTe-Bazlı Güneş Hücresinin Verimliliği Üzerine Etkisinin İncelenmesi
Authors: ÖZEN Yunus
Published: May 2019

Bu çalışmada, MoO3
tampon tabakasının CdS/CdTe güneş hücresinin verimliliği üzerine etkisi
araştırıldı. Cam/FTO/SnO2/CdS/CdTe/Au ve Cam/FTO/SnO2/CdS/CdTe/MoO3/Au
olmak üzere iki adet numune üretildi. MoO3 tabakası CdTe ve arka
kontağın metal elektrotu arasına tampon tabaka olarak büyütüldü. Güneş
hücreleri cam/flor katkılı kalay oksit alttaş üzerine Sıçratma (Sputtering)
sistemi ile büyütüldü. MoO3 tampon tabakası içeren CdS/CdTe güneş
hücresinin morfolojik özellikleri atomik kuvvet mikroskobu (AFM) ve taramalı
elektron mikroskobu (SEM) ölçümleri ile incelendi. Ayrıca, güneş hücre
yapılarının elektriksel çıkış parametrelerini belirlemek için hem geleneksel CdTe-bazlı
güneş hücresinin hem de MoO3 tabakası içeren CdTe-bazlı güneş
hücresinin fabrikasyonları yapıldı. Akım-voltaj ölçümleri oda sıcaklığında
karanlık ve 1.5G ışık altında yapıldı. Enerji dönüşüm verimlilik değeri 1
Güneş’de geleneksel ve MoO3 tabakası içeren güneş hücreleri için
sırasıyla %8.93 ve %10.31 olarak elde edildi. MoO3 tabakasının
CdTe-bazlı güneş hücresine entegrasyonunun hücre verimliliğini %15.45 oranında
arttığı gözlemlendi.
2,4,6-Trinitrofenol ve Trinitrotoluen ile 1-Bromopiren Arasında Oluşan Yeni Enerjik Ko-kristalin Karakterizasyonu ve Enerjik Performans Özellikleri
Authors: ŞEN Nilgün , BOZKUŞ Sinecan İrem
Published: May 2019

Ko-kristallendirme, 1:1
molar oranda Pikrik asit ile 1-Bromopiren ve TNT ile 1-Bromopiren arasında
çözücü buharlaştırma yöntemiyle hazırlandı ve ko-kristallerin yapısı tek
kristal ve toz X ışını kırınımı, Kütle spektrometresi, Kızılötesi
spektroskopisi ile karekterize edildi. Kırınım verileri analizi,
ko-kristallerin öncelikle donor-alıcı (elektron verici-elekton alıcı) π…π
istifleme etkileşimlerinden oluştuğunu ortaya koydu. Darbe hassasiyeti testleri
sonucu yapılan ölçümler ile TNT: 1-Bromopiren ve Pikrik Asit: 1-Bromopiren
ko-kristalleri, saf TNT, Picric Acid'e kıyasla önemli ölçüde azaltılmış darbe
duyarlılığını göstermiştir. Elde edilen yeni enerjik ko-kristaller detaylı calışması
ile  yoğunluk, oksijen dengesi, erime
noktası, ayrışma sıcaklığı, patlama performansı (hız, basınç) gibi önemli
fiziksel ve kimyasal özelliklerin değiştiğini ortaya koymaktadır.
Ko-kristalizasyon calişmasi ile  yeni
keşfedilen alternatif enerjik maddelerin iyileştirilmiş özelliğe sahip olduğunu
ve mevcut enerjik materyalin fiziksel ve kimyasal özelliklerini değiştirmenin
etkili bir yöntem olduğunu vurgulamaktadır.
(±)-(1SR,8RS,10RS)-9,9,10-Tribromtrisiklo[6.2.1.02,7]undeka-2,4,6-trien Molekülünün Hesaplamalı Kimya Yöntemiyle Lokal ve Global Kimyasal Aktivite ve DNA Bazları ile Yük Transferinin Tayini
Authors: DEMİRCİOĞLU Zeynep , ERSANLI Cem Cüneyt
Published: May 2019

Moleküler
yapıya ait tüm kuramsal hesaplamalar Gaussian 09 program kullanılarak B3LYP
yoğunluk fonksiyoneli ve 6-311G(d,p) baz seti ile hesaplanmıştır. Bu çalışmanın amacı
lokal ve global kimyasal aktivite parametrelerini inceleyerek yapının elektrofilik
ve nükleofilik doğasını anlamaktır. Elektrofilik ve nükleofilik doğa, sertlik
ve yumuşaklık parametreleri, MEP, net yükler (MPA ve NPA) ve Fukui
fonksiyonları ile belirlenmektedir. Kuantum kimyasına ait moleküler sistemlerde
NBO analizi, stabilizasyon enerjisi E(2),
konjüge etkileşimler veya yük transferini incelemek için etkin bir yöntemdir.
ECT (elektrofilik-bazlı yük transferi) yönteminde DNA bazları ve çalışılan molecule ait yük geçişleri
ΔN yük transfer
parametresi hesaplanarak belirlenmektedir. Bunların yanısıra, yapıya ait lineer olmayan optik,
(Non Linear Optical, NLO), özellikler dipol moment, kutuplanabilirlik ve hiperkutuplanabilirlik parametreleri ile belirlenmiştir.
Pemahaman Konsep Mekanika: Menentukan Arah Percepatan Pendulum, Sulitkah?
Authors: Saputri Diana Eka , Taqwa Muhammad Reyza Arief , Aini Fitria Nur , Shodiqin Muhammad Ibnu , Rivaldo Lugy
Published: May 2019

This article discusses to reveal students' conceptual understanding in determining the direction of acceleration in two-dimensional movements, with special cases of pendulum motion. To achieve this goal, there are 3 reasoned multiple choice questions which are part of 20 conceptual kinematics questions. The study was conducted on 37 first year physics education master students at Universitas Negeri Malang. This research is quantitative descriptive. Research data shows that students' understanding is still low, only 4 (10.81%) students answer the first question correctly, 3 (8.11%) students answer the second question correctly, and 24 (64%) students answer question correctly. Based on the answer analysis, students are indicated due experience errors, such as (1) the acceleration of the object is always in the direction of motion, (2) at the highest point the object pauses, accelerates zero, and (3) the pendulum had zero acceleration in lowest position because the velocity is maximum.
EFFECTIVENESS OF THE GUIDED DISCOVERY MODEL BASED VIRTUAL LAB PhET TOWARD MASTERY STUDENTS’ CONCEPT ON TOPIC PHOTOELECTRIC EFFECT
Authors: Habibbulloh Muhammad
Published: May 2019

Research has been conducted to determine the effectiveness of the guided discovery model based on the virtual lab PhET (Physics Education technology) on mastering students' concepts in the photoelectric effect material. The purpose of this study is describing the feasibility of learning, student activity, and the effectiveness of the model applied to the mastery of student concepts. This type of research is quantitative descriptive with the design of one group pretest-posttest. The data obtained were in the form of learning accuracy questionnaires, student activities, and the results of the pretest and posttest mastery of students' concepts. Analysis of data on implementation and activities of students used percentage of agreement, while mastery of students' concepts was analyzed descriptively quantitatively through homogeneity, normality, and N-gain test. Based on data and analysis, it was concluded that the implementation of categorical learning was very good, student activities were in good category, and guided discovery models based on virtual labs PhET were effectively used to improve mastery of students' concepts in the photoelectric effect material.
PEMANFAATAN ABU SEKAM PADI SEBAGAI BAHAN BAKU PEMBUATAN SILICA GEL
Authors: Syahril Aan
Published: May 2019

Penelitian pembuatan silica gel dari abu sekam padi ini bertujuan untuk mengetahuiwaktu operasi optimum, konsentrasi NaOH terbaik dan karakteristik silicagel yang dihasilkan. Penelitian ini dilakukan dengan variasi waktu 40, 50,60, 70 dan 80 menit, variasi konsentrasi NaOH 1 M, 2 M dan 3 M. Penelitianini menghasilkan waktu reaksi optimum untuk konversi silika yaitu 60 menitdan untuk rendemen pada waktu 70 menit dengan konversi silika 98% danrendemen 24,73%. Konsentrasi NaOH paling optimum dalam reaksi denganabu sekam padi adalah 3M dengan kadar air sebesar 2% dan keasaman sebesar1,35 mmol/gr. Berdasarkan karakterisasi dengan spektrofotometri IR, silica geltelah berhasil dibuat ditandai dengan munculnya serapan gugus fungsi –OHdan silianol pada panjang gelombang 3.471,86 – 3.456,43 cm-1 dan Si-O-Siatau siloksan pada panjang gelombang 1.110,99 cm-1; 1.101,35. Karakteristiksilica gel yang dihasilkan hampir sama dengan silica gel komersial. Absortifitasterbaik didapat pada SG 70.3 (silica gel pada waktu 70 menit dengan konsentrasiNaOH 3M) dengan daya adsorpsi 9,952 mg/gr dan efisiensi adsorpsi99,5%.
PENGARUH KITOSAN TERHADAP SIFAT ANTI MIKROBA EDIBEL COATING
Authors: Kadir Abdul
Published: May 2019

Tujuan penelitian ini adalah mengetahui pengaruh konsentrasi kitosan sebagaiedible coating terhadap mutu daging sapi yang disimpan pada suhu refrigeratorselama 4 hari. Penelitian ini terdiri dari dua tahap, yaitu pembuatan kitosandan pembuatan edible coating. Rancangan percobaan yang digunakanRancangan Acak Lengkap (RAL) dengan empat perlakuan dan dua kali ulangan.Konsentrasi kitosan yang digunakan sebagai perlakuan sebesar 1%, 1,5%,dan 2% serta 0% (sebagai pembanding). Karakterisasi kitosan yang digunakanadalah kadar air 10%, kadar abu 1,5%, derajat deasetilasi 80,42% dan rendemen 20%. Hasil analisis statistik menunjukkan bahwa perlakuan kitosan memberikan pengaruh yang berbeda nyata (p<0,05) terhadap nilai pH dan kadar air daging sapi. Daging sapi yang diberi perlakuan kitosan 1%, 2% dan 3% mampu menghambat kemunduran mutu akibat mikroba. Hasil uji TPC (Total Plate Count) untuk daging sapi yang diberi perlakuan kitosan 1%, 1,5% dan 2% memiliki nilai TPC yang lebih rendah dibandingkan daging sapi kontrol, yaitu sebesar 3,1 x 105 ,1,9 x 105 dan 3,3 x 103, sedangkan daging sapi kontrol memiliki nilai yang lebih tinggi selama penyimpanan 4 hari, yaitu sebesar 2,8 x 106.
PENGGUNAAN KATALIS HETEROGEN UNTUK PRODUKSI BIODISEL
Authors: Kurniasih Eka
Published: May 2019

Biodiesel biasanya produksi dengan menggunakan katalis homogen. Katalishomongen mempunyai kelemahan yaitu menghasilkan produk samping berupasabun. Karena adanya kelemahan pada katalis homogen, maka sekarang mulaidikembangkan pengganti katalis homogen dengan menggunakan katalisheterogen. Kelebihan katalis heterogen yaitu mudah dipisahkan di akhir proses.Peada penelitian ini digunakan katalis heterogen H-zeolit untuk mengatasimasalah yang timbul karena penggunaan katalis homogen dalam produksibiodiesel. Katalis H-zeolit disintesa dari zeolit alam Ujong Pancu melaluiproses aktivasi, impregnasi KI/KIO3 dengan menvariasikan konsentrasi larutanimpregnator 2,5%, 5%, 7,5%, 10%, 12,5%, dan proses kalsinasi. Penelitianbertujuan mengetahui pengaruh konsentrasi katalis zeolit dengan impregnasiKI/KIO3 terhadap kandungan ester, densitas. Hasil analisa kandungan estermenggunakan Gas Chromatografi (GC) menunjukkan konversi metil ester yangterbaik terdapat pada produk biodiesel yang menggunakan katalis H-Zeolitimpregnasi KIO3 dengan konsentrasi 12,5% memperoleh kandungan ester63,51 %. Dari analisa densitas diperoleh 0,88142 g/cm3 yaitu berada padarentang yang telah ditetapkan oleh syarat mutu biodiesel 7182:2015, yaitu0,850-0,890 g/m3. Nilai viskositas yaitu 3,5 Cp dan nilai flash point yaitu 97°C
SINTESA SURFAKTAN NON IONIK COCO DILAURILAMIDA MELALUI REAKSI ESTER AMIDASI ENZIMATIS
Authors: Kurniasih Eka
Published: May 2019

Di Indonesia permintaan akan kebutuhan surfaktan terus meningkat setiaptahunnya dan Indonesia juga masih membutuhkan impor surfaktan dalam jumlahyang besar. Sebagian besar surfaktan yang diproduksi masih menggunakanminyak bumi sebagai bahan baku, sementara cadangan minyak bumi terusmenipis dan tidak dapat diperbaharui. Oleh karena itu, seiring denganperkembangan teknologi kini surfaktan dapat diproduksi dengan bahan bakualternatif yang berasal dari sumber daya alam yang ramah lingkungan dan mudahterdegradasi. Coco dilaurilamida merupakan salah satu surfaktan alkanolamidayang berfungsi sebagai bahan penstabil dan pengembang busa. Coco dilaurilamidaadalah sebutan yang diberikan pada surfaktan yang diperoleh dari reaksi asamlaurat (C12H23COOH) dengan dietanolamina menggunakan bahan baku minyakkelapa murni (VCO), dimana VCO ini mengandung asam laurat yang tinggi.Sintesa surfaktan non ionik dari minyak kelapa murni (VCO) dilakukan melaluitahap esterifikasi pada temperatur 650C menggunakan katalis H2SO4 (10% v/v)selama 2 jam. Setelah tahap esterifikasi, dilanjutkan dengan tahap amidasimenggunakan biokatalis enzim Rhizomucor meihei dengan rasio 0,1%, 0,2%,0,3%, 0,4%, 0,5% (b/b) dan rasio mol metil laurat terhadap dietanolamina 1:1,1:2, 1:3, 1:4, 1:5 (b/v) pada temperatur 500C selama 4 jam. Setelah waktu reaksitercapai diperoleh dua lapisan. Coco dilaurilamida berada pada lapisan atas,sedangkan hasil samping berupa air pada lapisan bawah. Dari hasil penelitiandiketahui proses produksi optimum berada pada rasio enzim Rhizomucor meihei0,1% (b/b), rasio mol metil laurat : dietanolamina 1:1 dan temperature 500Cdengan konversi sebesar 82,5%.
Analisis Permasalahan Pelaporan Keuangan Dana Gampong Pada Gampong Meunasah Mesjid Kota Lhokseumawe
Authors: Arifai Muhammad , Dani Teuku Fakhrial , Faisal Faisal , Yolanda Dewi
Published: May 2019

Praktik pembukuan bendahara gampong menjadi sarana penting untuk mengungkapkan informasi secara akurat dan transparan. Perubahan tata kelola keuangan gampong yang menempatkan peran aktif aparatur desa dilihat sebagai persoalan yang menarik untuk diteliti dikarenakan kewajiban yang diemban oleh aparatur gampong tidak hanya berdampak pada pembangunan masyarakat gampong namun juga memberikan efek negatif terhadap praktik korupsi dan penyalahgunaan anggaran di gampong. Penelitian ini bertujuan untuk menganalisis permasalahan pembukuan dana gampong pada gampong Mesjid Puenteut Kota Lhokseumawe, sebagaimana yang diamanat dalam Qanun No. 5 Tahun 2003 dan Permendagri nomor 113 tahun 2014 tentang pelaksanaan tata pemerintahan gampong yang mandiri dan pengelolaan keuangan desa. Penelitian ini menggunakan pendekatan kualitatif model analisis simulasi dengan sampel aparatur Gampong Mesjid Puenteut Kota Lhokseumawe. Hasil penelitian menunjukkan bahwa masih terdapat permasalahan yang sangat teknis dalam penatabukuan akuntansi gampong sesuai dengan standar akuntansi desa. Hal ini sejalan dengan eksekusi anggaran yang bersumber dari dana desa, alokasi dana gampong, bagi hasil pajak daerah serta sisa pembayaran tahun lalu sebanyak Rp 1.697.010.354 yang dilihat masih terdapat kesalahan baik disengaja maupun tidak disengaja. Hasil penelitian ini memberikan implikasi pada masih rendahnya pemberdayaan gampong yang selama ini telah dilaksanakan oleh Badan Pemberdayaan Masyarakat Kota Lhokseumawe beserta pihak lain yang terlibat sehingga diperlukan adanya penanganan berkelanjutan dalam bentuk pendampingan.Kata Kunci: Bendaharawan Gampong, Anggaran Pendapatan dan belanja Gampong, Laporan keuangan