bluuebunny/crossref_metadata_2025_split huggingface dataset:
LOGICAL AND EXPERIMENTAL DESIGN FOR PHENOL DEGRADATION USING IMMOBILIZED ACINETOBACTER SP. CULTURE
Authors: Amara Amro Abd Al Fattah , Salem Soheir R. 
Published: October 2018

Phenol degradation processes were conducted through a series of enzymatic reactions effects and is affect by different components of the microbial metabolic flux. Using different optimization strategies like mutagenesis could lead to a successful optimization but also lead to lost of some important microbial features or to release a new virulence or unexpected characters. Plackett-Burman closes much gab between optimization, safety, time, cost, Man/hr, the complexity of the metabolic flux etc. Using Plackett-Burman experimental design lead to map the points affect in the optimization process by well understanding their request from nutrient and the best environmental condition required. In this study nine variables include pH (X1), oC (X2), glucose (X3), yeast extract (X4), meat extract (X5), NH4NO3 (X6), K-salt (X7), Mg-salt (X8) and trace element (X9) are optimized during phenol degradation by Acinetobacter sp., using Plackett-Burman design method. Plackett-Burman included 16 experiments, each was used in two levels, [-1] low and high [+1]. According to Blackett-Burman design experiments the maximum degradation rate was 31.25 mg/l/h. Logical and statistical analysis of the data lead to select pH, Temperature and Meat extract as three factors affecting on phenol degradation rate. These three variables have been used in Box-Behnken experimental design for further optimization. Meat extract, which is not statistically recommended for optimization has been used while it can substitute trace element, which is statistically significant. Glucose, which is statistically significant, did not included while it has a negative effect and gave the best result at 0 g/l amount. Glucose has been completely omitted from the media.Â pH, temperature and meat extract were used in fifteen experiments each was used in three levels, â€“1, 0, and +1 according to Box-Behnken design. Microsoft Excel 2002 solver tool was used to optimize the model created from Box-Behnken. The calculated degradation rate was 37.30 mg/l/hr at pH=7.12, Meat extract=1.6 g/l and Temperature=27.77oC. To prove the efficiency of using the Microsoft Excel 2000 solver the calculated variables are tested experimentally in vivo. The degradation rate was 38.45 mg/L/hr, which equal to 103.08% accuracy. The high accuracy level points out the efficiency of using Box-Behnken experimental design and the Excel solver to optimize its model.
Zinc-Laccase Biofuel Cell
Authors: Ahmad Abdul Aziz , Othman Raihan , Yusof Faridah , Abdul Wahab And Mohamad Firdaus 
Published: October 2018

A zinc-laccase biofuel cell adapting the zinc-air cell design features is investigated. A simple cell design configuration is employed: a membraneless single chamber and a freely suspended laccase in a quasi-neutral buffer electrolyte. The cell is characterised according to its open-circuit voltage, polarization profile, power density plot and discharge capacity at constant current. The biocatalytic role of laccase is evident from the polarization profile and power output plot. Performance comparison between a single chamber and dual chamber cell design is also presented. The biofuel cell possessed an open-circuit voltage of 1.2 V and delivered a maximum power density of 0.9 mW/cm2 at current density of 2.5 mA/cm2. These characteristics are comparable to biofuel cell utilising a much more complex system design.KEY WORDS (keyword)): Biofuel cell, Bioelectrochemical cell, Zinc anode, Laccase and Oxidoreductase.ABSTRAK: Sel bio-bahan api zink-laccase dengan adaptasi daripada ciri-ciri rekabentuk sel zink-udara telah dikaji. Sel dengan konfigurasi rekabentuk yang mudah digunapakai: ruangan tunggal tanpa membran dan laccase diampaikan secara bebas di dalam elektrolit pemampan quasi-neutral. Sel dicirikan berdasarkan voltan litar terbuka, profil polarisasi, plot ketumpatan kuasa dan kapasiti discas pada arus malar. Peranan laccase sebagai bio-pemangkin adalah amat ketara daripada profil polarisasi dan plot ketumpatan kuasa. Perbandingan prestasi di antara sel dengan rekabentuk ruangan tunggal and dwi-ruangan turut diketengahkan. Seperti dijangkakan, sel dengan rekabentuk ruangan tunggal menunjukkan kuasa keluaran yang lebih rendah jika dibandingkan dengan rekabentuk dwi-ruangan kemungkinan disebabkan fenomena cas bocor. Sel bio-bahan api ini mempunyai voltan litar terbuka 1.2 V dan memberikan ketumpatan kuasa maksima 0.9 mW/cm2 pada ketumpatan arus 2.5 mA/cm2. Ciri-ciri ini adalah sebanding dengan sel bio-bahan api yang menggunapakai rekabentuk sel yang jauh lebih rumit.
WASTE HEAT RECOVERY IN HEAT PUMP SYSTEMS: SOLUTION TO REDUCE GLOBAL WARMING
Authors: Baradey Y. , Hawlader M. N. A. , Ismail Ahmad Faris , Hrairi Meftah 
Published: October 2018

Energy conversion technologies, where waste heat recovery systems are included, have received significant attention in recent years due to reasons that include depletion of fossil fuel, increasing oil prices, changes in climatic conditions, and global warming. For low temperature applications, there are many sources of thermal waste heat, and several recovery systems and potential useful applications have been proposed by researchers [1-4]. In addition, many types of equipment are used to recover waste thermal energy from different systems at low, medium, and high temperature applications, such as heat exchangers, waste heat recovery boiler, thermo-electric generators, and recuperators. In this paper, the focus is on waste heat recovery from air conditioners, and an efficient application of these energy resources. Integration of solar energy with heat pump technologies and major factors that affect the feasibility of heat recovery systems have been studied and reviewed as well.Â KEYWORDS: waste heat recovery; heat pump.
CHALLENGES IN TEXTILE WASTEWATER AND CURRENT PALLIATIVE METHODS: AN OVERVIEW
Authors: Bello Ibrahim Adebayo 
Published: October 2018

Effluents from dye and textile industries are highly contaminated and toxic to the environment. High concentration of non-biodegradable compounds contributes to increased biochemical oxygen demand (BOD) and chemical oxygen demand (COD) of the wastewater bodies.Â Dyes found in wastewater from textile industries are carcinogenic, mutagenic or teratogenic. Biological processes involving certain bacteria, fungi, activated carbon and carbon nanotubes (CNTs) are promising methods for treating the waste water. These methods are either inefficient or ineffective.Â These complexities necessitates search for new approaches that will offset all the shortcomings of the present solutions to the challenges faced with textile wastewater management. This article reviews the past and recent methods used in the treatment of the textile dye wastewater and the future opportunities for efficient treatment of textiles wastewaters.
A Comprehensive Computational Design for Microstrip Passive and Active Linear Circuits
Authors: A. El-Badawy El-Sayed , Ibrahim S. H. 
Published: October 2018

In this paper, a complete program called HHSS2 is introduced which is a user-oriented program capable of designing linear active and passive microstrip circuits such as amplifiers, oscillators, mixers, lowpass filters, and couplers. The substrate parameters and the characteristic impedance of the microstrip lines are given to the program as a common statement. Examples for the design of a 3-GHz high gain amplifier, 2.6-GHz oscillator, ring coupler operated at 3.33 GHz, Lange coupler operated at 3.3 GHz, and maximally-flat lowpass filter operated at 2 GHz with 0.75 GHz cutoff frequency are introduced. Key Words: Computational Microstrip Circuit Design, Microwave Circuits, Computer Aided Design.
Compassion Fatigue in Nurses Working in Surgical Clinics
Authors: Denk Tuba , Köçkar Çiğdem 
Published: October 2018

This
research was carried out with a total of 207 nurses who agreed to participate
in the study in a research hospital surgical clinics between February and May
2016. The data collection tool used was the socio-demographic characteristics
form and the Quality of Life Scale for Employees, which consist of the sub-dimensions
of occupational satisfaction, burnout and compassion fatigue. As a result of
the study, it was found that as the age of increased, the rate of professional
satisfaction increased, the rate of job
satisfaction was higher for female and the rate of burnout was higher for men,
the lower level of education was cause lower professional satisfaction and
higher compassion fatigue.
Developing a Multi-channel Beamformer by Enhancing Spatially Constrained ICA for Recovery of Correlated EEG Sources
Authors: Samadzadehaghdam N , MakkiAbadi B , Eqlimi E , Mohagheghian F , Khajehpoor H , Harirchian M H 
Published: October 2018

Background: Brain source imaging based on electroencephalogram (EEG) data aims to recover the neuron populations’ activity producing the scalp potentials. This procedure is known as the EEG inverse problem. Recently, beamformers have gained a lot of consideration in the EEG inverse problem.Objective: Beamformers lack acceptable performance in the case of correlated brain sources. These sources happen when some regions of the brain have simultaneous or correlated activities such as auditory stimulation or moving left and right extremities of the body at the same time. In this paper, we have developed a multichannel beamformer robust to correlated sources. Material and Methods: We have looked at the problem of brain source imaging and beamforming from a blind source separation point of view. We focused on the spatially constraint independent component analysis (scICA) algorithm, which generally benefits from the pre-known partial information of mixing matrix, and modified the steps of the algorithm in a way that makes it more robust to correlated sources. We called the modified scICA algorithm Multichannel ICA based EEG Beamformer (MIEB).Results: We evaluated the proposed algorithm on simulated EEG data and compared its performance quantitatively with three algorithms: scICA, linearly-constrained minimum-variance (LCMV) and Dual-Core beamformers; it is considered that the latter is specially designed to reconstruct correlated sources.Conclusion:The MIEB algorithm has much better performance in terms of normalized mean squared error in recovering the correlated/uncorrelated sources both in noise free and noisy synthetic EEG signals. Therefore, it could be used as a robust beamformer in recovering correlated brain sources.
Contemporary Global Transformation of University System and the Philosophy of Education Specifications in Anglo-Saxon and American Models of Education and Research Management
Authors: Zinchenko Viktor 
Published: October 2018

In today’s world there is diversification of different models of higher education. At the same time, the multiplicity, the diversity of higher education models does not exclude their identity. Internationalization and integration of higher education in a global and international dimension raise a lot of new questions to the theory and practice. Almost every developed country has the rich experience of building the higher education system. The analysis of this experience can aid development and enrichment of the national educational system; it provides an opportunity to avoid repeating the same mistakes and to discover the new approaches to solving some problems in this area. Therefore, based on this, we consider that it is impossible to claim the creation of the strategy of modernization educational and scientific reforms, which affect the educational and scientific institution of the society in the management of scientific and educational space without analysis of the existing models, schools, directions, their classification in contemporary philosophy of education. It concern as well the sphere of the social philosophy of education as the sphere of management of education. The continuity of public education, qualitative management, their intensity can only be achieved under two conditions of the fundamental character. The first one is use of new, theoretically grounded and practically proven management, philosophically developed, accessible and technically supported high technology of social activity, education, training, and learning. The second condition is the perfect acquisition of the methodology of socio-axiological and research activity. The structure must provide the same conditions for equitable selection of civil, educational and scientific-educational actions, excluding coercion and domination. It is noted that the existence of developed civil society among the existing conditions and prerequisites for the successful formation and functioning of educational systems and effective models of multilevel educational management is necessary. Thus, we can conclude that the strategy of the modern world development proposed by the social philosophy of upbringing and education is a key in the field of social administration, philosophy, and pedagogy. This is what we exactly mean by education, science or some of the paradigms of upbringing and education as a dominant one on a certain socio-historical stage. This understanding largely depends on the manner of organization and functioning of civil society in the present and future.
Use of Metaphyseal Sleeves in Revision Knee Arthroplasty
Authors: Girkalo M. V. , Norkin I. A. 
Published: October 2018

Purpose.To study the short-term results of revision knee arthroplasty performed using metaphyseal sleeves.Patients and methods. During the period from 2013 to 2015 the total number of 40 patients was operated on. Type I femoral defects (by AORI classification) were diagnosed in 11 (27.5%), type II - in 26 (65.0%), type III - in 3 (7.5%) cases. Type I tibial defects were diagnosed in 2 (5.0%), type IIa - in 24 (65.0%), type IIb - in 11 (27.0%) and type III - in 3 (7.54%) cases. Metaphyseal femoral sleeves were used in 8 and metaphyseal tibial sleeve - in 40 patients.Results. Follow up period made up from 12 to 43 (mean 32.8) months. Excellent and good results by KSS scale were achieved in 30 (75.0%) of patients, by functional KSS scale - in 24 (60.0%) patients. Mean point by Knee Society Total Knee Arthroplasty Roentgenographic Evaluation scale in patients with femoral and tibial metaphyseal sleeves made up 2.35 versus 0.375 that confirmed the absence of progressive bone resorption. No one case of aseptic instability of the revision implant was observed. Repeated surgical intervention due to reinfection and knee joint contracture with pain syndrome was performed in 2 (5.0%) patients.Conclusion. The obtained data enable to recommend the use of metaphyseal sleeves for revision knee arthroplasty in patients with tibial and femoral defects of types II and III by AORI classification.
ANALISIS PERSEPSI MAHASISWA TERHADAP KINERJA DOSEN DAN PENGARUHNYA TERHADAP WORD OF MOUTH DENGAN KEPERCAYAAN SEBAGAI VARIABEL INTERVENING
Authors: Trifiyanto Kabul 
Published: October 2018

Penelitian ini bertujuan untuk mengetahui pengaruh persepsi mahasiswa terhdap kinerja dosen terhadap kepercayaan dan word of mouth di Sekolah Tinggi Ilmu Ekonomi Putra Bangsa Kebumen. Pengumpulan data dilakukan menggunakan kuesioner. Dengan menggunakan teknik non probability sampling, penelitian ini mengambil sampel 100 dari responden mahasiswa STIE Putra Bangsa Kebumen Semester 3 ke atas. Variabel yang digunakan dalam penelitian ini adalah kinerja dosen yang terdiri dari perencanaan pembelajaran (X1), pelaksanaan pembelajaran (X2), evaluasi hasil (X3), kepercayaan (Y1), dan word of mouth (Y2). Penelitian ini menggunakan teknik analisis deskritif, analisis top two boxes dan bottom two boxes dan statistik meliputi uji validitas, uji reliabilitas, uji asumsi klasik, uji hipotesis, analisis jalur, dan korelasi dengan menggunakan bantuan program SPPS 24 for windows.
Hasil penelitian ini menunjukkan bahwa semua variabel valid dan reliable, tidak terdapat multikolinieritas, tidak terjadi heterokesdastisitas, dan model memenuhi asumsi normalitas. Pengaruh perencanaan pembelajaran menunjukkan negatif dan tidak signifikan terhadap kepercayaan. Pengaruh pelaksanaan pembelajaran menunjukkan positif dan signifikan terhadap kepercayaan. Pengaruh evaluasi hasil menunjukkan positif dan signifikan terhadap kepercayaan. Pengaruh perencanaan pembelajaran menunjukkan negatif tapi tidak signifikan terhadap word of mouth. Pengaruh pelaksanaan pembelajaran menunjukkan positif dan signifikan terhadap word of mouth. Pengaruh evaluasi hasil menunjukkan positif namun tidak signifikan terhadap word of mouth. Pengaruh kepercayaan menunjukkan positif dan signifikan terhadap word of mouth.
STRATEGI PENGEMBANGAN BERAS MUTIARA DESA PLUMBON KECAMATAN KARANGSAMBUNG KABUPATEN KEBUMEN
Authors: Khasanah Nur 
Published: October 2018

Beras mutiara adalah salah satu produk yang diproduksi oleh kelompok keluarga miskin yang ada di Desa Plumbon. Dalam proses menuju produk unggulan daerah, perlu dirumuskannya strategi yang tepat agar beras mutiara bisa bersaing di pasar yang lebih luas. Penelitian dilakukan untuk merumuskan strategi pengembangan produk mutiara. Alat analisis yang digunakan adalah SWOT dan (Analytic Hierarchy Process) AHP. Analisis SWOT berfungsi untuk memetakan kelemahan, kekuatan, peluang dan ancaman serta merumuskan strategi yang akan digunakan untuk mencapai tujuan organisasi, sedangkan AHP digunakan untuk merumuskan skala prioritas dari strategi yang akan dilaksanakan.
Berdasarkan analisis yang dilakukan, bisa diputuskan untuk melakukan pelatihan, pengembangan dan mentoring sebagai strategi pertama. Strategi yang dilakukan pada urutan nomor dua adalah pelatihan Teknologi Informasi untuk tenaga pemasar, yang dilakukan nomor tiga adalah mendorong karyawan untuk melakukan inovasi, yang keempat adalah melakukan efisiensi produksi, yang kelima adalah melakukan inovasi, yang keenam adalah menambah supplier bahan baku, yang ketujuh melakukan perbaikan slogan, yang kedelapan meningkatkan aktivitas promosi, yang kesembilan adalah meningkatkan kapasitas produksi, yang kesepuluh adalah peningkatan aktivitas pemasaran dan yang terakhir adalah perluasan daerah pemasaran.
ANALISIS KOMUNIKASI MATEMATIS SISWA DALAM MEMECAHKAN MASALAH MATEMATIKA BERDASARKAN GAYA KOGNITIF REFLECTIVE-IMPULSIVE KELAS VII SMP NEGERI 1 SUMBERREJO
Authors: Fitri Anisa 
Published: October 2018

This research aims to analyze the ability of mathematical communicationin problem solving who had reflective cognitive style’s, and impulsive cognitive style’s in the first grade of SMP Negeri 1 Sumberrejo on mathematical written, drawing mathematically, and mathematical expression aspect’s. The research is a qualitative research with subjects in this research were eight students of class VII C SMP Negeri 1 Sumberrejo which consisting of four students with reflective cognitive style’s, four student with impulsive cognitive style’s. The subject in this research were taken by using purposive sampling technique. Data was collected by the results of written tests and interviews. Data analysis techniques used data reduction, data presentation, and conclusion.The validity of the data usetime triangulation that compared data of the first task and interview with the second task and interview. The results showed that: (1) students with reflective cognitive styles: the mathematical written ability are on the fourth level, drawing mathematically are on the third level, and mathematical expression are on the third level, (2) students with impulsive cognitive styles: the mathematical written ability are on the third level, drawing mathematically are on the second level, and mathematical expression are on the second level. Penelitian ini bertujuan untuk mendeskripsikan kemampuan komunikasi matematis siswa dengan kategori gaya kognitif yakni reflective, dan impulsive, kelas VII SMP Negeri 1 Sumberrejo pada aspek menulis matematis, menggambar secara matematis, dan ekspresi matematis. Penelitian ini merupakan penelitian kualitatif dengan subjek penelitian delapan siswa kelas VII C SMP Negeri 1 Sumberrejo yang terdiri dari empat siswa dengan gaya kognitif reflective, empat siswa dengan gaya kognitif impulsive. Penentuan subjek penelitian menggunakan purposive sampling. Teknik pengumpulan data menggunakan tes tertulis dan wawancara. Teknik analisis data yang digunakan meliputi pengumpulan data, reduksi data, penyajian data dan verifikasi.Validitas data yang digunakan dalam penelitian ini menggunakan triangulasi waktu yang membandingkan antara data tertulis dan wawancara I dengan data tertulis dan wawancara II. Hasil penelitian menunjukkan bahwa kemampuan komunikasi matematis untuk siswa gaya kognitif reflective meliputi: kemampuan menulis matematis berada pada tingkat 4, kemampuan menggambar secara matematis berada pada tingkat 3, dan kemampuan ekspresi matematis berada pada tingkat 3. Kemampuan komunikasi matematis untuk siswa dengan gaya kognitif impulsive meliputi: kemampuan menulis matematis berada pada tingkat 4, kemampuan menggambar secara matematis berada pada tingkat 2, dan kemampuan ekspresi matematis berada pada tingkat 2.
MENINGKATKAN KEMAMPUAN PEMECAHAN MASALAH MATEMATIS SISWA SMP DENGAN MODEL PEMBELAJARAN THINK TALK WRITE
Authors: Sari Astrid Chandra 
Published: October 2018

The purpose of this research are to know whether the average problem solving abilities matematis of students who were taught using Think Talk write learning model can achieve exhaustiveness learning and whether the average problem solving abilities matematis of students who were taught using Think Talk write learning model are better than average the average problem solving ability of students who were taught using the learning model of konvensional. The population in this research is VII grade students of SMP N 1 Klambu. By random sampling technique obtained two classes as a research sample, namely class VIIC as the experimental class and class VII B as the control class. The data was collected by the documentation methods, test methods and observation methods. Based on the analysis of research results is known that 83,3% of students who were taught using Think Talk write learning model can achieve exhaustiveness learning. In addition, there are significant differences between the average problem solving abilities matematis of students who were taught using the learning model of Think Talk write with students who are taught using the learning model of konvensional. From the above description it can be concluded that the application of Think Talk write learning model is effective towards problem solving ability matematis of VII grade students of SMP N 1 Klambu at the material quadrilateral.

Penelitian ini bertujuan untuk mengetahui apakah rata-rata kemampuan pemecahan masalah matematis siswa yang diajar menggunakan model pembelajaran Think Talk write dapat mencapai ketuntasan belajar dan apakah rata-rata kemampuan pemecahan masalah matematis siswa yang diajar menggunakan model pembelajaran Think Talk write lebih baik daripada rata-rata kemampuan pemecahan masalah matematis siswa yang diajar menggunakan model pembelajaran konvensional. Populasi dalam penelitian ini adalah peserta didik kelas VII SMP N 1 Klambu. Dengan teknik random sampling diperoleh dua kelas sebagai sampel penelitian yaitu kelas VII C sebagai kelas eksperimen dan kelas VII B sebagai kelas kontrol. Pengumpulan data dilakukan dengan metode dokumentasi, metode tes dan metode observasi. Berdasarkan analisis hasil penelitian diketahui bahwa 83,3% siswa yang diajar menggunakan model pembelajaran Think Talk write mencapai ketuntasan belajar. Selain itu, terdapat perbedaan yang signifikan antara rata-rata kemampuan pemecahan masalah matematis siswa yang diajar menggunakan model pembelajaran Think Talk write dengan siswa yang diajar menggunakan model pembelajaran konvensional. Dari uraian di atas dapat disimpulkan bahwa penerapan model pembelajaran Think Talk write efektif terhadap kemampuan pemecahan masalah matematis siswa kelas VII SMP N 1 Klambu pada materi segiempat.