bluuebunny/crossref_metadata_2025_split huggingface dataset:
Fracture Resistance of Endodontically Treated Maxillary Premolars Restored With Different Methods
Authors: Mergulhão VA , de Mendonça LS , de Albuquerque MS , Braz R 
Published: January 2019

SUMMARYPurpose:The purpose of this in vitro study was to evaluate the resistance and patterns of fracture of endodontically treated maxillary premolars (ETPs) restored with different methods.Methods and Materials:Mesio-occluso-distal cavities were prepared in 50 extracted caries-free human maxillary premolars after endodontic treatment. The teeth were divided into five groups (n=10), according to the restorative method. G1: intact teeth (control group); G2: conventional composite resin; G3: conventional composite resin with a horizontal glass fiber post inserted between buccal and palatal walls; G4: bulk-fill flowable and bulk-fill restorative composites; and G5: ceramic inlay. For direct restorations, Filtek Z350 XT, Filtek Bulk Fill Flowable Restorative, and Filtek Bulk Fill Posterior Restorative were used. Indirect restorations were fabricated from a pressable lithium disilicate glass-ceramic (IPS e-max Press) and adhesively cemented (RelyX Ultimate). All specimens were subjected to thermocycling (5°C to 55°C/5000 cycles) and additionally submitted to cyclic loading 50,000 times in an Electro-Mechanical Fatigue Machine. Next, the specimens were subjected to a compressive load at a crosshead speed of 1 mm/min until fracture. The fractured specimens were analyzed to determine the fracture pattern using a stereomicroscope, and then representative specimens were carbon coated to allow for the studying of the fracture surface under scanning electron microscopy. One-way analysis of variance (ANOVA) was used to compare fracture resistance of the groups. The results of fracture patterns were submitted to the Fisher exact test (α=0.05).Results:All specimens survived fatigue. Mean (standard deviation) failure loads (N) for groups were as follows: G1: 949.6 (331.5); G2: 999.6 (352.5); G3: 934.5 (233.6); G4: 771.0 (147.4); and G5: 856.7 (237.5). The lowest fracture resistance was recorded for G4, and the highest ones were recorded for G2, followed by that of G1 and G3. One-way ANOVA did not reveal significant differences between groups (p&gt;0.05). The highest repairable fracture rates were observed in G1 (100%) and G3 (80%).Conclusions:ETPs restored with conventional composite resin with or without horizontal fiber post, bulk-fill composite, and ceramic inlay showed fracture resistance similar to that of sound teeth. Conventional composite resin restorations exhibited the highest prevalence of unrepairable fractures, and the insertion of a horizontal fiber post decreased this prevalence. Intact teeth showed 100% of repairable fractures. It is difficult to extrapolate the results directly to a clinical situation due to the limitations of this study.
Power Generation Cost and Quality of Household Electricity Generator as a Back-up for Grid Supply in Nigeria
Authors: Koledoye Titus Olugbenga , Ogunrewo Olukolade F. , Musilim Abiodun A. 
Published: January 2019

In this paper operation data were collected to evaluate petrol (PMS) fuel when used as primary source of energy to generate electricity. The analysis highlight cost effectiveness and power quality of this means of generating electricity. For the exercise, a 2 KVA electric power generator was loaded from 800W to 1200W at 100W increment and one hour duration respectively for each load. The Data collected during generator operation include the load current, supplied voltage, power frequency, power factor and power consumed at five minutes interval for each load value. The generated Data were analyzed using mathematical and graphical approach to determine the generated power quality and unit cost of generation. The results, compared with the grid, show that the grid is far more economical and have better power quality.
An Evaluation of the Effectiveness of Applying the Mes in a Maintenance Department – A Case Study
Authors: Patalas-Maliszewska Justyna , Skrzeszewska Małgorzata 
Published: January 2019

Abstract
The issue of adapting enterprises to operate in accordance with the assumptions of the Industry 4.0 concept now requires performing highly complex and responsible analyses in manu-facturing enterprises. Based on the Industry 4.0 concept, maintenance services and also the imple-mented IT solutions in a production enterprises are now a significant factor in their development process. The article presents an analysis of the degree of use of the Manufacturing Execution Sys-tem (MES) in the maintenance department based on an example of a manufacturing company in the automotive sector of this industry. The analysis was performed in terms of the degree of ex-ecution of specific business processes in the maintenance department with the help of MES. The results of the analysis allow to confirm the possibility of adapting the enterprise to the Indus-try 4.0 concept.
Corruption and Combating Corruption: A Framework for Peace, Human Rights and Sustainable Development in Post-Independent Africa
Authors: Muma Eric Che 
Published: January 2019

Abstract
Since the introduction of democratic reforms in post-independent Africa, most states have been battling corruption to guarantee sustainable peace, human rights and development. Because of the devastating effects of corruption on the realisation of peace, human rights and sustainable development, the world at large and Africa in particular, has strived to fight against corruption with several states adopting national anti-corruption legislation and specialised bodies. Despite international and national efforts to combat corruption, the practice still remains visible in most African states without any effective accountability or transparency in decision-making processes by the various institutions charged with corruption issues. This has further hindered global peace, the effective enjoyment of human rights and sustainable development in the continent. This paper aims to examine the concept of corruption and combating corruption and its impact on peace, human rights and sustainable development in post-independent Africa with a particular focus on Cameroon. It reveals that despite international and national efforts, corruption still remains an obstacle to global peace in Africa requiring a more proactive means among states to achieve economic development. The paper takes into consideration specific socio-economic challenges posed by corruption and the way forward for a united Africa to combat corruption to pull the continent out of poverty, hunger and instability, and to transform it into a better continent for peace, human rights and sustainable development.
Structure versus Process: Exploring the Link between Distributive and Procedural Justice Beliefs and National Identification among the Peoples of Southern and Northern Nigeria
Authors: Asekun W. A. 
Published: January 2019

Abstract
Nigeria’s ethno religious plurality has persistently hindered cohesion among its many peoples. Thus, for over four decades, a debate has been ongoing over whether or not the Nigerian polity should be restructured. The present study drew from System Justification Theory to examine how the constituent groups in Nigeria are apparently kept united amidst perceptions of injustice from some of her ethnic groups. The paper also examined the extent to which the perceptions of distributive and procedural justice influence national identification. The study involved a survey of 230 federal university undergraduates. Participants responded to a scale on distributive and procedural justice beliefs as well as on measures of national identification. Results revealed that distributive and procedural justice beliefs have a significant influence on national group identification. Furthermore, respondents from the southern Nigeria showed strong identification with their ethnic groups but weak identification with the national group, while participants from northern Nigeria showed strong identification with the ethnic group and an equally strong identification with the national group. These findings suggest there is less national cohesion among Nigerian ethnic groups than is necessary for faster national development. Recommendations are therefore made on how national cohesion might be achieved in spite of cultural differences.
Study and Design Experiments in Teaching Chapter I - Chemical Component of Cellular, Biology 10
Authors: Thi Thuy Quynh Nguyen , Ha Hoang Thu 
Published: January 2019

Experiment in biological teaching is one of the important tools for deeper the student’s knowledge, and improving their practice skill. However, in the chapter I - The chemical composition of cell, Biology 10, there is no any experiment that illustrates the knowledge’s content. Therefore, this article designed some experiments which not only associated with daily life with cheap materials and chemicals, and easy to find, but also ensuring scientific and pedagogical efficiency. Experimental pedagogy has demonstrated that designed experiments can help student better understand the knowledge and interest in the subject.
Keywords
Biology 10, experiment, cellular
References
1. Đinh Quang Báo, Nguyễn Đức Thành, 2001. Lý luận dạy học sinh học. NXB Giáo dục2. Hoàng Thu Hà, Vũ Phương Liên, Nguyễn Thị Phương Vy, Trần Thị Vân Trang, 2017. Đánh giá thực trạng dạy học thí nghiệm trong dạy học các môn Vật lý, Hóa học và Sinh học tại trường Trung học phổ thông. Những xu thế mới trong giáo dục. Kỷ yếu hội thảo quốc tế. Nhà xuất bản Đại học quốc gia Hà nội.3. Đỗ Hương Trà, Trần Khánh Ngọc, Trần Trung Ninh, Trần Thị Thu Thủy, Nguyễn Công Khanh, Nguyễn Vũ Bích Hiền, 2015.Dạy học tích hợp phát triển năng lực học sinh, Quyển 1- Khoa học tự nhiên.NXB Đại học Sư phạm Hà nội.4. Nguyễn Cảnh Toàn, N.C.A.,2009. Dạy học theo định hướng hình thành và phát triển năng lực người học ở trường phổ thông. NXB Đại học Sư phạm.5. Trần Bá Hoành, 2006. Đổi mới phương pháp dạy học, chương trình và sách giáo khoa. NXB Đại học sư phạm.6. Jenet Verjovsky, Guillermina Waldegg, 2005. Analyzing beliefs and practices of a Mexican high school biology teacher. Journal of Research in Science teaching.
PENGARUH GAYA KEPEMIMPINAN, KEBIJAKAN DESENTRALISASI, DAN DISIPLIN KERJA, TERHADAP KINERJA MANAJERIAL PADA SKPD DI KABUPATEN LOMBOK TIMUR TAHUN 2018
Authors: Mudhani H L Ahmad 
Published: January 2019

In this study aims to determine whether there is an influence between leadership style, work discipline and decentralization policy on managerial performance in regional work units (SKPD) in East Lombok. Using the Saturated Sample method, 30 SKPD were taken. The analysis technique used is multiple linear regression, performs the classic assumption test (prerequisite) which includes normality test, autocorrelation test, heteroscedasticity test and multicollinearity test. After that also hypothesis testing using t-statistics to test the partial regression coefficient, and F-statistics to test the effect together with the level of 5% (0.05).Based on normality test, autocorrelation test, multicollinearity test and heteroscedasticity test, all independent variables are free from disturbances and no variables deviate from the classical assumptions (Prerequisites). This shows that the available data fulfills the requirements to use multiple linear regression equation models. From the results of the analysis show that leadership style has a positive effect on managerial performance, decentralization policy has no effect on managerial performance, and work discipline has a positive effect on managerial performance.Keywords : leadership style, work discipline, decentralization policy and managerial performance
Pengaruh Penerapan Model Pembelajaran Inkuiri terhadap Hasil Belajar dan Sikap Demokratis Siswa MA Darussalimin NW Sengkol Pada Mata Pelajaran PPKn
Authors: Mardiana Mardiana , Rispawati Rispawati , Ismail M 
Published: January 2019

Penelitian ini bertujuan untuk mengetahui ada tidaknya pengeruh penerapan model pembelajaran Inkuiri terhadap hasil belajar kognitif dan sikap demokratis sisw a MA Darussalimin NW Sengkol pada mata pelajaran PKn tahun ajaran 2017/2018. Penelitian ini menggunakan pendekatan kuantitatif dengan jenis penelitian quasi eksperimen (eksperimen semu) yaitu Nonequivalent Control Group Design. Sampel dalam penelitian ini adalah sisw a kelas XI Agama sebanyak 21 orang sisw a sebagai kelas eksperimen dan sisw a kelas XI IPA sebanyak 21 orang sisw a sebagai kelas control. Instrument pengumpulan data menggunakan tes pilihan ganda sebanyak 20 soal untuk hasil belajar kognitif dan instrument angket untuk sikap demokratis. Berdasarkan hasil uji hipotesis uji-t untuk hasil belajar diperoleh data thitung =1,85 dan t table = 1,684 dengan taraf signifikan 5% dan dk=42 jadi t hitung > t table. Sedangkan hasil analisis sikap demokratis dengan menggunakan skala likert yakni 81,36% dari sebelumnya 69,04% untuk kelas eksperimen dan 73,65% dari sebelumnya 65,08% untuk kelas control. Hal ini menunjukka hipotesis dalam penelitian diterima atau dengan kata lain ada pengaruh penerapan model pembelajaran inkuiri terhadap hasil belajar kognitif dan sikap demokratis sisw a. AbstractThis thesis aimed at finding out the effectiveness or uneffectiveness of using inquiry model in finding result of cognitive study and democratic attitude student of MA darussalimin nw sengkol in PPKn lesson in academic year 2017/2018. The sample in this research w as IX (nineth) of Islamic class. That w as 21 student as experimental class and student of IX (nineth) IPA that w as 21 studenas control class. The instrument w as collecting the data used multiple choice test, there w ere 20 questions for the resulted of cognitive study and instrument quisioner in democratic attitude. Based on the result of hipotesis experimental for the result of study the researcher got tcount = 1,85 and t table = 1,684 in taraf significant 5% and DK = 40. So tcount >t table.While analisist result of democratic attitude w as used likert scala that w as 81,36% w hich before 69,04% for experimental class and73,65% for control class. So based on the date the researcher got the other w ord it w as effective in using inquiry model to cognitive result of study and democratic attitude.Keywords: Inquiry, result of PPKn lesson and Democratic Atitude
Experimental characterization and comparison of automobile brake linings
Authors: Topuz Polat 
Published: January 2019

Abstract
In this study, characteristics of automobile disc brake linings produced by three different manufacturers were compared experimentally, these being original parts (OEM), subsidiary industrial production parts (SIPM), and brake linings of Turkish production (TM). These brake linings which vary in composition, components, wear and friction characteristics, as well as mechanical and physical properties were investigated. In addition, their environment and their usage were compared. For the ensuant chemical analyses, scanning electron microscopy (SEM), EDS (energy dispersive spectroscopy) system and XRF (X-ray fluorescence) were used. TG (thermo gravimetric analysis) was performed to determine the mass losses in the brake lining materials. Wear friction tests of the brake linings carried out according to the JIS D 4411 standard. Apart from these, the hardness, density and internal shear strength values of the brake linings were measured.
Adsorption properties of heavy metal ions in landfill leachate by Na-bentonite
Authors: Xu Xin , Liu Xiaofeng , Oh Myounghak , Park Junboum , Chen Y. Frank 
Published: January 2019

Abstract
As a result of the rapid development of industry, the heavy metal contamination of landfill leachate has become more serious. Adsorption is an effective method that can remove heavy metal ions from landfill leachate. Na-bentonite was selected as the adsorbent for the adsorption of heavy metal ions (lead, cadmium, copper) from landfill leachate in both single and competitive systems. Batch experiments were conducted to study the effects of contact time, pH value, temperature, and initial concentration on adsorption efficiency. Adsorption behavior was investigated by means of adsorption isotherms, adsorption kinetics, and adsorption thermodynamics. The study results show that: 1. The amount of heavy metal ions adsorbed by Na-bentonite increases with increasing contact time, pH value, temperature, and initial concentration of heavy metal ions. 2. Adsorption behavior is suitable for modeling with the Langmuir isotherm and a pseudo second-order kinetic model. 3. The adsorption of lead and cadmium are thermodynamically spontaneous, the adsorption of copper is not spontaneous, and the adsorption processes of lead, cadmium and copper are all endothermic using thermodynamic analysis. 4. Competitive adsorption between lead, cadmium, and copper occurs in competitive systems.
Therapeutic Effects of Hab Shabyar on Open-Angle Glaucoma: A Double-Blinded, Randomized, Placebo-Controlled Trial
Authors: BaniHabib Ebrahim Khalil , Mostafai Ali , Fazljou Seyyed Mohammad Bagher , Mohammdi Ghadir 
Published: January 2019

Background: Open-angle glaucoma (OAG) is one of the leading causes of blindness worldwide. This study evaluates the therapeutic effects of hab shabyar in patients with open-angle glaucoma. Materials and Methods: In this clinical randomized controlled trial, 50 patients with OAG were randomized into two groups. The intervention group was received a drop of timolol plus 500 mg of hab shabyar every 12 hours. The placebo group was received a drop of timolol every 12 hours plus 500 mg of wheat germ as a placebo. The intraocular pressure in patients with OAG was measured in each group and compared at before the intervention (t1), one month (t2), and two months (t3) after the intervention. Results: The mean decrease in intraocular pressure for the right eye at three times in the intervention group was statistically significant, but the mean decrease in the placebo group was not significant. Similar results were obtained for the left eye at t1 when compared to t3. The patients in the intervention group expressed more satisfaction than the patients in the placebo group (P≤0.001). Conclusion: Our study demonstrated that consumption of timolol plus hab shabyar instead of consuming of timolol alone was probably more effective for reducing intraocular pressure in patients with OAG.[GMJ.2019;In press:e1218]
Preventive Effect of Different Wild Pistachio Oils on Oxidative Stress Markers, Liver Enzymes, and Histopathological Findings in a Metabolic Syndrome Model
Authors: Jamshidi Sanaz , Hejazi Najmeh , Golmakani Mohammad-Taghi , Tanideh Nader , Heidari Esfahani Mina 
Published: January 2019

Background: Wild pistachio (Pistacia Atlantica mutica) species with wide distribution in Iran have different nutrition properties and may have therapeutic effects in metabolic syndrome. Metabolic syndrome, as a prevalent health problem, is a main risk factor for different chronic diseases such as diabetes, fatty liver and cardiovascular diseases. The present study aimed to evaluate the preventive effects of mixture, kernel, and hull oil of wild pistachio (WP) on oxidative stress markers, liver function and histopathological findings in metabolic syndrome induced rats. Materials and Methods: After oil extraction by cold press method and chemical analysis, rats were divided into 6 groups. Group 1 received normal saline; group 2 received 2cc fructose solution and 0.5cc normal saline; and groups 3, 4, 5 and 6 received 2 cc fructose solution and 0.5 cc sunflower oil, mixture, hull and kernel oils of WP for 10 weeks, respectively. Then, glycemic indices, oxidative stress, liver enzymes and histopathological examination were determined using standard laboratory tests. Results: WP Kernel and mixture oils notably decreased the fasting blood sugar and insulin resistance compared with the fructose group. Insulin level was significantly increased in the kernel oil group (P<0.05). There was no significant difference in oxidative stress, liver enzymes and histopathology parameters among the groups. Conclusion: Kernel oil of WP improved hyperglycemia, insulin resistance and insulin secretion, but the changes in oxidative stress markers, liver enzymes and histopathologic results were not significant among the groups. [GMJ.2019;In press:e1238]
Recommendation system for web article based on association rules and topic modelling
Authors: Herwanto Guntur Budi , Ningtyas Annisa Maulida 
Published: January 2019

The World Wide Web is now the primary source for information discovery. A user visits websites that provide information and browse on the particular information in accordance with their topic interest. Through the navigational process, visitors often had to jump over the menu to find the right content. Recommendation system can help the visitors to find the right content immediately. In this study, we propose a two-level recommendation system, based on association rule and topic similarity. We generate association rule by applying Apriori algorithm. The dataset for association rule mining is a session of topics that made by combining the result of sessionization and topic modeling. On the other hand, the topic similarity made by comparing the topic proportion of web article. This topic proportion inferred from the Latent Dirichlet Allocation (LDA). The results show that in our dataset there are not many interesting topic relations in one session. This result can be resolved, by utilizing the second level of recommendation by looking into the article that has the similar topic.