bluuebunny/crossref_metadata_2025 huggingface dataset:
Ahmad Amin Perspective of As-Sunnah
Authors: Umar Atho'illah
Published: July 2021

Moslems faith towards the position and autenthicity of hadits or sunnah in the period of the prophet SAW are unquestioned, because if ever they found anything that brought doubt or unclear they could easily confirm it to the prophet SAW. Contrary to the time after his passing until now, the issues of hadist has been complicated, which lead to opened the veil to see his being as a religious authority. As did by Ahmad Amin in his book Fajr al-Islam, who criticize some things in the hadist. According to him, the originality of the hadist after the passing of the prophet worth to be questioned. This paper trying to observe the thought of Ahmad Amin about Sunnah especially the one associated with the authencity of Sunnah after the passing of Rasulullah SAW and the critics of some ulama on his thought which against the flow of the concept of Sahabat’s honesty which have become the Ijma’ of most Ulama specifically muhaddithin.
Pola Pikir Santri Pondok Pesantren Al Muhajirin 3 Tambakberas Jombang Terhadap Ajaran Ahlusunnah Wal Jama’ah (Aswaja) Tentang Tawasut Tawazun Dan Tasamuh
Authors: Ashoumi Hilyah , AH Nailul Khikam
Published: July 2021

Pondok Pesantren Al Muhajirin 3 merupakan pesantren yang dimiliki oleh NU sebagai benteng untuk menanamkan nilai-nilai Ahlusunnah Wal Jama’ah juga pencentak bibit-bibit para pemikir yang mencerminkan karakteristik tawasut, tawazun, dan tasamuh untuk diinternalisasikan dalammenghadapi gesekan-gesekan yang ditimbulkan dari paradigma keagamaan dan kebangsaan sebagai aplikasi pola pikir para santri. Tujuan penelitian ini adalah untuk mengetahui pola pikir santri Pondok Pesantren Al Muhajirin 3 Tambakberas Jombang terhadap ajaran Ahlusunnah Wal Jama’ah (Aswaja) tentang tawasut, tawazun, dan tasamuh. Jenis penelitian yang digunakan adalah menggunakan metode dengan pendekatan deskriptif kualitatif. Pengumpulan data dilakukan dengan metode observasi, wawancara, dan dokumentasi. Teknik analisis data dilakukan dengan tiga proses analisis data yaitu datareduction (reduksidata), datadisplay (penyajian data) dan conclusion drawing/verification (penarikan kesimpulan/verifikasi). Hasil penelitian menunjukkan bahwa pola pikir santri Pondok Pesantren Al Muhajirin 3 Tambakberas Jombang masih relevan dengan nilai-nilai Ahlusunnah Wal Jama’ah yaitu taewasut, tawazun, dan tasamuh. Terbukti dalam keseharian santri Al Muhajirin 3 tidak ada yang tergiur dengan faham-faham yang beretentangan dengan Aswaja dan senantiasa menta’ati petuah, nasihat serta arahan para Kiai. Sehingga santri Al Muhajirin 3 bisa hidup dengan rukun, guyub dan meleburkan diri dalam kebersamaan.
EFEKTIVITAS MODEL PEMBELAJARAN GROUP INVESTIGATION TERHADAP HASIL BELAJAR SISWA PADA MATA PELAJARAN FIQIH KELAS XI
Authors: Izzah Siti Laylatul
Published: July 2021

The Effectiveness of Group Investigation Learning Models on Student Learning Outcomes in Subjects of Fiqh. The purpose of this research is to find out whether the group investigation learning model class XI MIPA is more effective than the conventional learning model class XI IIS 1 on the learning outcomes of students of class XI Aliah Al-Ihsan Kalikejambon on Fiqh subjects. The research is in the form of experiments with the type of experiment conducted is quasi-experimental research (Quasy Experiment Research). Based on the results of statistical calculations from the average post-test results of the control class 68.35 and the average post-test results of the experimental class 72.75 obtained calculations using the SPSS program with a significance of significance (Sig 2-tailed) is 0.034, a significance value of 0.034 <0.05. Then Ho is rejected and Ha is accepted. Thus it can be concluded that there is a significant difference between the results of the post-test of the control class and the experimental class. Thus, it can be said that the teaching and learning process carried out with the group investigation learning model in class XI MIPA is more effective than conventional learning models in class XI IIS 1 on student learning outcomes in the subject of Fiqh.

 

Keywords: Fiqh lessons, Group Investigation, Learning Outcomes

 

Abstrak

Efektivitas Model Pembelajaran Group Investigation Terhadap Hasil Belajar Siswa Pada Mata Pelajaran Fiqih. Tujuan dilakukannya penelitian ini adalah untuk mengetahui apakah model pembelajaran group investigation kelas XI MIPA lebih efektif dibandingkan dengan model pembelajaran konvensional kelas XI IIS 1 terhadap hasil belajar siswa kelas XI Madrasah Aliah Al – Ihsan Kalikejambon pada mata pelajaran Fiqih. Adapun penelitian ini berbentuk eksperimen dengan jenis eksperimen yang dilakukan adalah penelitian eksperimen semu (Quasy Experiment Reasearch). Berdasarkan hasil perhitungan statistik dari rata-rata hasil post-test kelas kontrol 68,35 dan rata-rata hasil post-test kelas eksperimen 72,75 diperoleh perhitungan menggunakan program SPSS dengan signifikansi signifikansi (Sig 2-tailed) adalah 0,034, nilai signifikansi 0,034 < 0,05. Maka Ho ditolak dan Ha diterima. Dengan demikian dapat disimpulkan bahwa terdapat perbedaan yang signifikan antara hasil post-test kelas kontrol dan kelas eksperimen. Dengan demikian, dapat dikatakan bahwa proses belajar mengajar yang dilakukan dengan model pembelajaran group investigation di kelas XI MIPA lebih efektif daripada model pembelajaran konvensional di kelas XI IIS 1 terhadap hasil belajar siswa pada mata pelajaran Fiqih.

 

Kata kunci: Pelajaran Fiqih, Group Investigation, Hasil Belajar
PENGARUH STRATEGI PEMASARAN TERHADAP FUNDING DAN LENDING DI BMT AT-TAJDID TEMAYANG BOJONEGORO
Authors: Musfia Nur , Rahmatika Arivatu Ni’mati , - Ashlihah
Published: July 2021

Baitul Mal Wat Tamwil is a sharia-based financial institution that manages the financial deposits and financing. Strategy in Marketing BMT At-Tajdid Temayang Bojonegoro Temayang planned to build community confidence that BMT At-Tajdid Temayang Bojonegoro is a business hall in which there are activities to develop Productive efforts and investments in improving the quality of economic activity and also building community confidence that at the BMT At-Tajdid Temayang Bojonegoro can manage the savings with the trust, but with the marketing strategy Whether BMT as a financial institution can compete with conventional financial institutions although the products, prices, places, and promotions have not been adequate so that the main problem will be observed by researchers.

            The results showed that the variable marketing strategy (product, price, place, promotion) simultaneously had an effect on funding and lending. It can be proved that the value F count > F table or 99.847 > 4.20. While based on a partial test of a variable marketing strategy the product has a significant effect on funding and lending, it can be proved that the product marketing strategy value T count more > T table or 3.709 > 2.059, price 0.045 > 0.50, place 0.240 > 0.50, Promotion 2.205 > 2.059. The results of this test resulted in a coesophageal determination (R ²) of 0.963 That means 96.3% of the marketing strategy variable in the influence of variable funding and lending while the remaining 3.7% in the influence of other variables that are not conscientious in research This.
PENGEMBANGAN MODEL LITERASI DIGITAL DALAM PEMBELAJARAN KITAB KUNING DI MA’HAD AL-JAMIAH UIN MAULANA MALIK IBRAHIM MALANG
Authors: Barry Muhammad Yasin Fatchul
Published: July 2021

Development of digital literacy is needed not only in formal education, but also for non-formal education such as pesantren. Therefore this study aims to describe the pattern of digital literacy development among ma'had al-jamiah students of Maulana Malik Ibrahim State Islamic University of Malang, as well as to explain the effectiveness of the use of the yellow book digital literacy model. This study uses the modified Borg and Gall R&D method, and the type of experimental research carried out to determine the effectiveness of product use. This research results in exposure to digital literacy in the ma'had that has been developed and the use of digital literacy of the yellow book through an android application that has a significant effect in increasing the ability of students to study the yellow book.
HUBUNGAN TINGKAT KECERDASAN SPIRITUAL DENGAN KEDISIPLINAN SANTRI DALAM MENJALANKAN PERATURAN PONDOK PESANTREN AL-MASRURIYYAH TEBUIRENG DIWEK JOMBANG
Authors: Waslah Waslah , Afifudin Qo'id
Published: July 2021

Penelitian ini didasari oleh kecerdasan spiritual yang dimiliki santri. Santri di pandang sebagai individu yang mempunyai karekter yang baik, hal tersebut didukung dengan tinggalnya santri di lingkungan pondok pesantren. Di pondok pesanren santri memperoleh pendidikan yang baik, seperti kesopanan, kedisiplinan, keramahan, kesopanan dan masih banyak sifat baik lainya yang diperoleh santri di pondok pesantren. Namun kedisiplinan santri belum sepenuhnya tercermin pada santri Al-Masruriyyah. Masih ada beberapa santri saat kegiatan dilaksanakan tidak mengikuti kegiatan. Pembina dan pengurus sudah melakukan pengkondisian santri di setiap kamar, tetapi mereka tidak berangkat untuk mengikuti kegiatan. Tujuan dari penelitian ini adalah untuk mengetahui tingkat kecerdasan spiritual dan kedisiplinan santri dalam menjalankan peraturan di pondok Al-Masruriyyah, serta untuk menganalisis ada atau tidaknya pengaruh tingkat kecerdasan spiritual dan kedisiplinan santri di pondok pesantren tersebut. Pendekatan yang digunakan dalam penelitian ini adalah pendekatan kuantitatif. Pengumpulan data menggunakan angket, wawancara dan dokumentasi. Untuk analisis data penelitian, peneliti menggunakan analisis korelasi product moment untuk mendapatkan hasil dari hipotesis yang telah ditetapkan. Penelitian menunjukkan bahwa Kecerdasan Spiritual Santri diperoleh kriteria tinggi, kedisiplinan santri dalam menjalankan peraturan diperoleh kriteria tinggi, serta rhitung dengan jumlah 0,556 lebih besar dari rtabel, sehingga Ha diterima yakni “terdapat hubungan antara tingkat kecerdasan spiritual dengan kedisiplinan santri dalam menjalankan peraturan Pondok Pesantren Al-Masruriyyah Tebuireng Diwek Jombang”.
Modelo de sistema multisensor con enfoque de muestreo multifrecuencia
Authors:   Grupo de Investigación Arquitecturas de Sistema de Control, Escuela de Ingeniería y Ciencias Aplicadas, Universidad de Oriente, Núcleo de Anzoátegui, Alfonsi Alfonso , Yánez Raiza ,   Grupo de Investigación Arquitecturas de Sistema de Control, Escuela de Ingeniería y Ciencias Aplicadas, Universidad de Oriente, Núcleo de Anzoátegui, Alfonsi Alfonso R. ,   Grupo de Investigación Arquitecturas de Sistema de Control, Escuela de Ingeniería y Ciencias Aplicadas, Universidad de Oriente, Núcleo de Anzoátegui
Published: July 2021

En la fase temprana de diseño de un multisensor están las especificaciones funcionales que establecen el comportamiento sus señales, donde es importante analizar la influencia de los tiempos de muestreo en el despliegue temporal entre los datos de entrada y salida disponibles del multisensor, como del enlace de comunicación que pudieran utilizar. Por tanto, en este trabajo se desarrolla un modelo de sistema multisensor considerando múltiples señales con periodos de muestreo que pueden ser diferentes del proceso y datos de estado, incluyendo la limitación temporal del enlace de comunicación. El sistema consta de los componentes: multisensor y estación base. Además, se desarrolló un modelo de simulación en Scilab/Xcos para ejercitar diferentes escenarios. El modelo ofrece un perfil temporal de la secuencia de datos sensoriales bajo diferentes esquemas de muestreo, permitiendo presentar la evolución de las señales con pérdidas o ausencias de muestras, las cuales al ser tratadas sistemáticamente con operadores multifrecuencia y funciones de interpolación para su reconstrucción, conducen a resultados utilizables para la abstracción del mundo real. Finalmente, la efectividad del modelo se ilustra mediante simulaciones numéricas.
Application of the Electrometric Method for Determining the Free Water Content in Jet Fuels
Authors:   The 25th State Scientific Research Institute of Chemmotology of the Russian Ministry of Defence, Dumbolov D. U. , Lyapich E. N. ,   The 25th State Scientific Research Institute of Chemmotology of the Russian Ministry of Defence, Suslin М. А. ,   The 25th State Scientific Research Institute of Chemmotology of the Russian Ministry of Defence, Zaitseva А. А. ,   The 25th State Scientific Research Institute of Chemmotology of the Russian Ministry of Defence
Published: July 2021

The article provides an analysis of the deficiencies of fuel purity control tools for jet engines currently in use. It presents theoretical and experimental studies of the dependence of the loaded quality of a cylindrical cavity resonator on the volume of water placed in it, on the basis of which a method of determining the concentration of free water in jet fuels by the direct electrometric method using a microwave resonator is proposed.
Improvement of Polyurea Greases Tribotechnical Properties Based on Different Dispersion Media with Different Additives
Authors:   National University of Oil and Gas «Gubkin University», Tonkonogov B. P. , Kilyakova A. Yu. ,   National University of Oil and Gas «Gubkin University», Frolov M. M. ,   National University of Oil and Gas «Gubkin University», Kotyshev I. A. ,   National University of Oil and Gas «Gubkin University», Alexanyan K. G. ,   National University of Oil and Gas «Gubkin University», Zotova M. M. ,   NPP-QUALITET LLC, Medzhibovskiy A. S. ,   NPP-QUALITET LLC, Moykin A. A. ,   NPP-QUALITET LLC
Published: July 2021

This work describes antifriction additives based on dialkyldithiophosphoric acid and molybdenum-containing friction modifiers and its influence on lubricating greases prepared with petroleum and synthetic oils tribological properties. The dependence of tribological properties of polyurea greases tribological properties on the nature, concentration of the additive (1–3 wt%) and the dispersion medium has been studied. Evaluation of antiwear and extreme pressure properties was carried out by three well-known standardized methods – FBW (four ball wear test system) and KT-2 and also using the Brugger tribometer.
Evaluation of the Economic Efficiency of the Associated Petroleum Gas Application for the GTL Technology
Authors:   National University of Oil and Gas «Gubkin University», Ozdoeva A. Kh.
Published: July 2021

The main problem still remains a rather low level of useful use of associated components of oil production and, consequently, a high percentage of combustion of associated hydrocarbon compounds. In addition, companies are increasing the amount of costs aimed at reducing volatile organic compounds and nitrogen oxide every year, which significantly reduces the productivity of equipment. Based on the analysis of existing practices, the economic prospects are evaluated and recommendations for the targeted use of APG are formulated. The study briefly outlines technologies for reducing on-site flaring that are applicable in hard-to-recover oil fields. Information on technologies is collected and evaluated from a review of previous studies, technical documents, and analysis of open international sourcess.
Features of Risk Management at Petrochemical Enterprises and Oil Refining
Authors:   Ufa State Petroleum Technical University, Branch of the University in the City of Salavat, Luneva N. N. , Evdokimova N. G. ,   Ufa State Petroleum Technical University, Branch of the University in the City of Salavat
Published: July 2021

The paper presents an analysis of risk factors at petrochemical and oil refining enterprises in general. Using the example of the petrochemical company Gazprom Neftekhim Salavat LLC, a flowchart of the risk management process is presented, which allows you to determine possible strategies and recommendations for reducing them. The calculation of the efficiency indicators of the development and implementation of the new technology in three variants is carried out on the example of bitumen production in Gazprom Neftekhim Salavat LLC. The sensitivity analysis method is used to calculate the NPV indicator for changes in the main risk factors – capital costs, price, cost of production and volume of production. It is shown that all variants of technologies are very sensitive to changes in the price of products sold and their cost and are quite resistant to factors of production volume and the level of investment. A method for calculating the efficiency indicators of the introduction and risk assessment of new technologies at oil refining and petrochemical enterprises is proposed, which will allow taking into account the peculiarities of risk management in a multi-variant scenario of technical projects.
Assessment of the Environmental Efficiency of Oil Refineries
Authors:   Ufa State Petroleum Technical University, Branch of the University in the City of Salavat, Zakharova E. A. , Likhacheva N. A. ,   Ufa State Petroleum Technical University, Branch of the University in the City of Salavat
Published: July 2021

The criteria for assessing environmental efficiency and mechanisms for selecting environmental indicators are analyzed. It is proposed to use a new criterion - the intensity of greenhouse gas emissions, which determines the ratio of the volume of greenhouse gas emissions and the result of the organization's activities. The results of the environmental efficiency assessment allow us to assess environmental risks, work out ways to reduce the anthropogenic load on the environment and develop long-term production development plans, taking into account possible changes in the state of the environment in the region of oil refining production.
KAJIAN KEBUTUHAN ANGKUTAN LAYANAN PERGERAKAN INTERNAL KAMPUS INSTITUT TEKNOLOGI SUMATERA
Authors: Rahma Siti , Wijayanti Goldie Melinda , Saraswati Zenia F
Published: July 2021

Selain fasilitas fisik berupa gedung perkuliahan dan laboratorium, fasilitas berupa moda transportasi juga dibutuhkan untuk memudahkan pergerakan sivitas akademika dalam memenuhi kebutuhan akademik maupun non akademik. Institut Teknologi Sumatera (ITERA) merupakan institusi teknologi negeri pertama di pulau Sumatera, yang berada di perbatasan kabupaten Lampung Selatan dan Kota Bandar Lampung. Dari hasil survei diketahui bahwa sebesar 27% dari sivitas akademika yaitu yang terdiri dari dosen, tenaga kependidikan/staf, dan mahasiswa tidak memiliki kendaraan pribadi. Hal ini menimbulkan suatu permasalahan aksesibilitas yaitu tidak adanya angkutan umum yang melayani pergerakan internal bagi golongan captive tersebut. Dalam merencanakan angkutan layanan internal kampus, akan dilakukan beberapa analisis untuk mengetahui seberapa pentingnya sarana pergerakan internal di wilayah kampus ITERA, dan jenis kendaraan yang dapat melayani permintaan pergerakan yang terjadi. Berdasarkan hasil survei, diketahui bahwa pergerakan internal kampus dilakukan oleh seluruh sivitas akademika ITERA, dengan waktu perpindahan puncak yaitu pada pukul 15.00-16.00 WIB. Dari analisis kondisi geometri eksisting, dapat diketahui bahwa lebar lajur pada ruas jalan lingkar internal ITERA yaitu melebihi 2,5 m yang artinya memadai untuk melayani pergerakan dengan jenis kendaraan mobil penumpang ringan atau Light Vehicle (LV) dan bus sedang atau besar sesuai dengan klasifikasi jenis kendaraan angkutan umum darat. Selain itu, dari golongan kelompok choice didapatkan lebih dari 50% responden yang menyatakan untuk bersedia menggunakan angkutan umum yang melayani pergerakan internal kampus ITERA apabila fasilitas tersebut telah tersedia.
STABILITAS PERFORMA DAN REALIBILITAS IPAL DOMESTIK DENGAN KOMBINASI AERASI SECARA INTERMITTENT DENGAN RESIRKULASI EFLUEN DAN MICROBUBBLE GENERATOR
Authors: Ahmad Johan Syafri Mahathir , Putri Hafasatya Maharani , Santoni Nurul Ainun , Saraswati Sri Puji
Published: July 2021

Berbagai macam teknologi telah diterapkan pada Instalasi Pengolahan Air Limbah (IPAL) domestik, namun tidak diketahui secara pasti realibitas dan kinerjanya. Penelitian ini membahas tentang realibilitas IPAL di Bulaksumur Residence untuk pemenuhan standar kualitas efluen jika efluen akan dibuang langsung ke lingkungan dan standar kualitas air kelas 4 jika efluen IPAL akan digunakan sebagai air penyiraman taman. IPAL beroperasi secara kontinyu dan kinerja IPAL diamati selama 82 hari. IPAL menggunakan sistem aerasi intermittent dengan memanfaatkan resirkulasi air limbah dengan pemasangan microbubble generator menunjukkan performa yang baik dan stabil. Efisiensi removal TSS, COD, PO4-P dan TN berturut-turut sebesar 68,9±12,9%, 78,4±9,8%, 45,3±8,6% dan 63,4±13,7%. Performa yang sangat baik juga terlihat pada efisiensi nitritasi, nitratasi dan denitrifikasi berturut-turut sebesar 83,1±7,9%, 97,6±2,0% dan 67,2±19,3%. Kualitas efluen untuk parameter TSS (4,6±3,4 mg/l), COD (13,9±6,6 mg/l) dan NH3-N (2,4±2,4 mg/l) menunjukkan realitibitas 100% baik untuk memenuhi standar kualitas air efluen maupun air kelas 4. Begitu pula untuk NO3-N (2,8±0,5 mg/l) juga menunjukkan realibilitas 100% untuk memenuhi standar kualitas air kelas 4. Sedangkan untuk NH3-N (2,4±2,4 mg/l) dan NO2-N (0,22±0,99) hanya menunjukkan realibilitas sebesar masing-masing 8,3%.
Analisis Dampak Beban Kerja Terhadap Kecelakaan Kerja pada Pekerja Bagian Produksi Beton di PT. Varia Usaha Beton Kota Makassar
Authors: Sujasmin A. Nur Azisah , Suharni A. Fachrin  , Ulfa Sulaeman
Published: July 2021

Beban kerja yang tinggi sehingga risiko kecelakaan kerja yang dihadapi oleh para pekerja juga tinggi. Beton Siap Pakai (BSP) merupakan salah satu bagian operasional dari PT. Varia Usaha Beton yang mempunyai tugas untuk memproduksi dan mengirim beton yang digunakan dalam pembangunan sebuah proyek. Setiap karyawan yang terlibat dalam proses produksi harus menggunakan alat pelindung diri (APD) berupa helm, sarung tangan, masker dan sepatu boot. Sedangkan untuk proses pengiriman beton dengan menggunakan truck mixer setiap hari diadakan pengecekan kondisi truck. Tentu saja beban kerja yang ditanggung karyawan pada Beton Siap Pakai tergolong berat karena mereka harus bisa memenuhi pesanan beton untuk sebuah proyek, tingginya permintaan pengiriman beton tidak selalu bisa dipenuhi tepat waktu karena kapasitas produksi serta pengiriman dengan menggunakan truck mixer terbatas. Kondisi seperti ini dapat menimbulkan stres kerja bagi karyawan yang tentunya akan berdampak pada kinerja karyawan. Tujuan dari dalam penelitian ini adalah untuk mengetahui  dampak beban kerja terhadap kecelakaan kerja pada pekerja bagian produksi beton di PT. Varia Usaha Beton Kota Makassar Tahun 2020. Jenis penilitian ini adalah penilitian kuantitatif dengan menggunakan pendekatan Cross Sectional Study. Populasi dalam penelitian ini adalah seluruh pekerja di bagian produksi beton PT.Varia Usaha Beton Kota Makassar dengan teknik total sampling yaitu sebanyak 32 responden yang ada dibagian produksi beton. Data dianalisis yang menggunakan uji chi square. Hasil penelitian yang diperoleh bahwa variabel yang berhubungan secara signifikan antara beban kerja dengan kecelakaan kerja pada pekerja bagian produksi beton PT. Varia Usaha Beton Kota Makassar (p=0,000). Diharapkan kepada pihak PT. Varia Usaha Beton Kota Makassar agar lebih ketat pengawasan keselamatan dan kesehatan kerja dengan diberi pengarahan tentang alat pelindung diri pada saat bekerja guna mengurangi angka kecelakan kerja yang ada dibagian produksi beton. Tujuan dari dalam penelitian ini adalah untuk mengetahui  dampak beban kerja terhadap kecelakaan kerja pada pekerja bagian produksi beton di PT. Varia Usaha Beton Kota Makassar Tahun 2020.
5G通信技术在城市轨道交通中的应用
Authors: 杨 玮
Published: July 2021

近年来，我国综合国力在多方面利好因素的影响下得到了显著的提升，从而为各个领域的发展壮大带来了诸多的机遇，有效地推动了我国交通运输行业的发展，并且逐渐地从老旧的单点化转变为规模化的运行模式，有效地促进了运输效率的提升，并且在确保运输安全性方面起到了良好的辅助作用。城市轨道交通是当前最为先进的一种交通模式，其最为突出的特征就是安全性高、效率快、稳定性强的优越性，5G通信技术为城市轨道交通发展起到了积极的辅助作用。
机械设计中金属材料的选择及应用探讨
Authors: 焦 鹤
Published: July 2021

近些年我国城市化进程的速度不断加快，而在发展过程中机械设计行业所发挥的作用变得越来越显著，在很大程度上推动了我国经济的发展，让城市的发展更加迅速和繁荣。而在机械设计中对金属材料的选择非常重要，金属材料的质量会在很大程度上影响机械设计的水平，因此必须要依据机械设计的实际情况来选择最为合适的，质量材质好的金属材料，由此才能更好的推动我国机械设计行业的健康发展。因此在本文中我们主要对机械设计中技术材料的选择和实际应用进行了详细的分析与探讨，以供参考。
净水机用增压泵的噪声分析及降噪技术分析
Authors: 杨 军明 , 张 焕 , 劳 科奇
Published: July 2021

现代人们的经济水平显著提高，对于生活各项设施的质量要求也随之提升。水是人们生活当中的必须资源，净水机的应用能够净化自来水质，但是一些净水机在运行时增压泵的存在比较大的噪声，影响着净水机使用的体验舒适感。基于此，文中就对净水机用增压泵的噪声分析及降噪技术分析，先对反渗透净水机增压泵运行的噪声进行测试分析，然后针对噪声的实际情况提出改善技术措施。
面向数字化工厂建设的数据应用探析
Authors: 张 焕 , 杨 军明 , 劳 科奇
Published: July 2021

数字化工厂是以产品生命周期为基础，进行数据运算，在系统虚拟环境中，对整个生产过程进行模拟、仿真、评估操作，并将相关方式应用在整个产品生命周期内的新型组织方式。为了进一步提高数字化工厂的建设质量，文中将围绕数据应用架构以及面向数字化工厂建设的数据应用方案进行分析讨论，并提出相关设计难题与应对措施，从而使机电制造业能够更好的实施自动化生产，提高工作效率。
BIM技术在建筑机电安装工程中的应用探讨
Authors: 潘 从瑞 , 原 旭 , 郎 现海 , 杨 正航
Published: July 2021

在多方面利好因素的影响下，我国综合国力得到了显著的提升，从而有效的推动了建筑工程行业的发展。在整个建筑工程项目之中，机电安装工程具有较强的复杂性，并且涉及到的层面相对较多，如果任何一个环节出现失误的情况，那么都会对建筑机电安装工程的质量造成不良影响，所以建筑施工单位应当对建筑机电安装工程加以侧重关注，加大力度从不同的角度入手来对工程质量加以保证。将BIM技术切实的运用到建筑机电安装工程之中，对于工程各项工作进行合理的规划，保证各项工作都能够有序高效的落实。其次，BIM技术在工程现场安装监督管理工作中也具有重要的作用，借助这项技术可以对现场安装工作进行全面的了解，切实的对工程安装进度加以把控，规避各类工程质量问题的发生。
核磁共振成像技术和核磁共振电气及病床开发设计思路
Authors: 曹 丁文
Published: July 2021

文中首先从核磁共振成像技术原理的角度阐述该虚拟软件开发的总体设计思路和虚拟软件整体功能框架，然后从本征组织模型建立、虚拟数据动态采集、核磁共振图像重建三个方面阐述核磁共振成像技术虚拟数据采集与图像重建方法，从软件界面、数据结构两个方面阐述核磁共振成像技术虚拟软件设计开发，最后从预扫描实验、成像实验等方面阐述核磁共振成像技术虚拟软件功能实验，并重点阐述采样数据、SE序列、IR序列、EPI序列等因素对图像成像特点的影响，为核磁共振成像技术教学提供虚拟软件支撑。
Efficiency of crosses selection for yield in red rice through diallel analysis
Authors: Águila Ricardo Montalván Del , Silva Edson Ferreira
Published: July 2021

Diallel analysis is a methodology used in the genetic improvement of plants. One of its main purposes is to provide subsidies for early identification of promising crosses for the development of high yielding inbred lines. Several articles have been published in diallel analysis, and many recommendations were made either for the selection of certain crosses of lines for hybrids or for the development of competitive inbred lines. However, articles about the validation of information predicted by these analyses and the results in the field are scarce or nonexistent. The objective of this article was to validate diallel analysis using model IV of Gardner and Eberhart published in 1966, a methodology recommended to identify promising crosses among developed inbred lines in red rice. We compared the recommendations of the diallel analysis crosses with the process end the result of inbreeding generations. Recommended crosses by the diallel analysis were different from those obtained after generations of self-fertilization and selection. However, two of the four selected parents were matched. Considerations were made about the accuracy of diallel analysis and the need to validate in practice methodologies that theoretically are of great value.
Statistical Model Based Breast Tumor Classification in Contourlet Transform Domain
Authors: Kabir Shahriar Mahmud , Tanveer Md Sayed , Shihavuddin ASM , Bhuiyan Mohammed Imamul Hassan
Published: July 2021

Determination of breast tumors from B-Mode Ultrasound (US) image is a perplexing one. Researches employing statistical modeling such as Nakagami, Normal Inverse Gaussian (NIG) distributed parametric images in this classification task have already explored but experimentation of those statistical models on contourlet transformed coefficient image in breast tumor classification task has not reported yet. The proposed method is established by considering 250 clinical cases from a publicly available database. In this database each clinical case exists as *.bmp format. In the preprocessing step firstly, the ultrasound B-Mode image is binarized to detect the lesion contour. Then contourlet transformation is employed. These contourlet sub band coefficients are shown to be modeled effectively by Nakagami and NIG distributions. These Nakagami and NIG parametric images are obtained by estimating the parameters of those prior statistical distributions locally. Few shape and statistical features are chosen according to their effectiveness on those parametric images. The benign and malignant breast tumors are classified utilizing these features with different classifiers such as the support vector machine, k-nearest neighbors, fitted binary classification decision tree, binary Gaussian kernel classification model, linear classification models for binary learning with high-dimensional etc. It is observed that classification performance of NIG statistical model based parametric version of contourlet coefficient images gained better accuracy than those of Nakagami statistical model.

GUB JOURNAL OF SCIENCE AND ENGINEERING, Vol 7, Dec 2020 P 21-26
Study of the Structural and Magnetic Properties of COFE2O4 Nanoparticles for Therapeutic Agent for Cancer Therapy
Authors: Islam M Khairul , Khan M Nasir Uddin , Shahinuzzaman M
Published: July 2021

The cobalt ferrite (CoFe2O4) nanoparticles were synthesized by chemical co-precipitation technique and characterized by X-ray diffraction (XRD), energy dispersive X-ray spectroscopy (EDX), transmission electron microscopy (TEM), vibrating sample magnetometer (VSM), and Mössbauer spectroscopy. The CoFe2O4 nanoparticles coated with biocompatible chitosan at different concentrations to produce homogeneous suspensions were also characterized by dynamic light scattering (DLS) and hyperthermia set-up. XRD data of the sample explored the particle size near about 7 nm in as-dried condition. TEM micrograph of bare CoFe2O4 nanoparticles provided the particle size nearly too about 8 nm which is in good agreement with the XRD data. This particle size after coating with chitosan became 14 nm. EDX results of this sample confirmed its nano dimension with spinel structure. VSM results of the sample in as-dried condition showed the ferromagnetic character which has been beyond proved by Mössbauer spectroscopy. The hydrodynamic diameter (Hd) and polydispersity index (PDI) of the chitosan-coated samples also provided promising results. The samples were tested for their induction heating properties with an RF magnetic field of 20 mT and a frequency of 342 kHz. We also studied therapeutic efficiency in-vitro on 9L gliosarcoma cancer cells, which revealed > 98% of mortality through hyperthermia protocol with the same RF field and frequency using chitosan-coated CoFe2O4nanoparticles.

GUB JOURNAL OF SCIENCE AND ENGINEERING, Vol 7, Dec 2020 P 69-75
Effective Strain Image Sequence Selection by Using Semi-Automated Image Processing Technique
Authors: Chowdhury Gulam Mahfuz , Hasan Md Mahedi , Ahmed Asif , Rahman Md Wahid Tousif , Reza Md Taslim
Published: July 2021

One fourth of the cancer detected in women worldwide is breast cancer which leads this as a major threat for women. There are many methods of detecting cancer among which ultra-sound strain imaging is one of the promising techniques. However, in strain sequence, not all the frames show clear tumor visibility. Consequently, in this paper we tested some well-defined algorithms to find only those frames where the tumor is comparatively clearly visible. We have used Mean Pixel Difference (MPD) and Gray- Level Co-occurrence Matrix (GLCM) to find the frames with better tumor visibility. We have tested our methods in several real-life cases and the results have been examined by a professional doctor. The MPD has an accuracy of 96.2% and the GLCM. Contrast has that of 55.55%.

GUB JOURNAL OF SCIENCE AND ENGINEERING, Vol 7, Dec 2020 P 8-13
A Comparative Study of Pricing Option with Efficient Methods
Authors: Sutradhar Sujon Chandra , Hossain ABM Shahadat
Published: July 2021

Our main objective of this paper is to introduce four individual techniques of pricing options; the techniques are Binomial method, Trinomial method, Monte Carlo simulation and Black-Scholes-Merton model. Because they play a significant role in option valuation of stock price dynamics, risk managements as well as stock market. In this paper, we briefly discuss all these four methods with their properties and behavior. We also focused on numerical technique for the higher accuracy of option pricing and compare them graphically. We use the Computer Algebra System (CAS) Python (Edition 2019.3.1) for this purpose.

GUB JOURNAL OF SCIENCE AND ENGINEERING, Vol 7, Dec 2020 P 1-7
Simplifying the Boolean Equation Based on Simulation System using Karnaugh Mapping Tool in Digital Circuit Design
Authors: Islam Md Jahidul , Hussain Md Gulzar , Sultana Babe , Rahman Mahmuda , Rahman Md Saidur , Rahaman Muhammad Aminur
Published: July 2021

In computerized integrated circuits, the fundamental principle intends to avoid the multifaceted nature of the circuitry by making it as brief as attainable and minimize the expenditure. Techniques like Quine- McCluskey (QM) and Karnaugh Map (K-Map) are often used approaches of simplifying Boolean functions. This study presents a recreation framework of simplification of the Boolean capacities by the utilize of the K- Map definition for beginner-level learners. It uses the algebraic expression of the Boolean function to decrease the number of terms, generates a circuit, and does not use any redundant sets. In this way, it gets to be competent to deal with lots of parameters and minimize the computational cost. The result of the assessment is performed in this paper by contrasting it with the C- Minimizer algorithm. In computation time terms, the result appears that our comprehensive K mapping tool outflanks in current procedures, and the relative error accomplishes a lower rate of percentage (2%), which fulfills the satisfactory level.

GUB JOURNAL OF SCIENCE AND ENGINEERING, Vol 7, Dec 2020 P 76-84
Expression of Ki-67 and Its Association with Histological Type, Grade and Stage of Colorectal Carcinoma
Authors: Jahan Sultana Israt , Md Badruddoza Shah , Asafudullah SM , Amin Md Nurul
Published: July 2021

Background & objective: The role Ki-67 as a prognostic marker has been studied in many cancers in many studies. However, only few studies reported the prognostic role of Ki-67 in colorectal carcinoma (CRC) with contradictory opinions. The present study was undertaken to assess the Ki-67 proliferation index (PI) in tissue sections of CRC and to investigate the relationship between the proliferative activity and histological type, grade and stage of the tumour.

Methods: The present cross-sectional descriptive study was conducted in the Department of Pathology, Rajshahi Medical College, Rajshahi over a period of two years from September 2017 to August 2019. All clinically suspected cases of CRC and later confirmed by histopathology were the study population. A total 44 such cases were included in the study. Tissue sections from 44 formalin-fixed and paraffin-embedded tumor specimens were examined at the Department of Pathology of Rajshahi Medical College, Rajshahi. The cases were histologically classified, graded (WHO) and staged according to TNM and modified Dukes’ staging system. Ki-67 proliferation index was calculated immunohistochemically using the monoclonal antibody MIB-1, and were studied under light microscope. Expression of Ki-67 was calculated as a percentage of labeled nuclei per 500 cells counted in consecutive five high-power fields in the most reactive areas of the slides. The staining results were categorized into groups using a cut-off value of Ki-67 determined by ROC curve analysis.

Results: In the present study the cases with high Ki-67 PI were significantly associated with high grade colorectal carcinoma (p = 0.005). TNM Stage-II and Stage-III tumours were more likely to be associated with high Ki-67 PI than those with low Ki-67 PI (p < 0.001). A significant association was observed between Ki-67 immuno-expression and modified Dukes’ staging of the tumours with Stage C being highly associated with high Ki-67 PI (p < 0.001). But histologic tumor type (mucinous and non-mucinous) was not found to be associated with Ki-67 proliferation index. Based on Receiver Operating Characteristic (ROC) curve analysis tumors with nuclear immunoreactivity ≥ 25% were considered as high proliferation index (PI) and < 25% as low PI. The Ki-67 at a cut-off value of >25% had high sensitivity (85.7%) in differentiating high grade CRC from the low-grade tumors but its specificity was moderate (67.6%) with overall diagnostic accuracy being 70.5%.

Conclusion: The study concluded that cases with high Ki-67 PI are significantly associated with high grade CRC (poorly differentiated) than the cases with low grade CRC (well and moderately differentiated). TNM Stage-II & Stage-III and modified Dukes’ stage C also more often tend to be associated with high Ki-67 PI than with low Ki-67 PI.

Ibrahim Card Med J 2020; 10 (1&2): 33-39
Comparison of Ocular Lens Thickness of Type-2 Diabetic Retinopathy Patients with Non-diabetic Control, Measured by High Resolution Ultrasonography
Authors: Deepa Khalada Parvin , Ghafoor Nusrat , Siraj Nawshin , Haque Md Ziaul , Islam Md Ubaidul , Jubaida Most Razina
Published: July 2021

Background & objective: The aim of this study was to verify whether the ocular lens of type-2 diabetic retinopathy patients was thicker (measured by high resolution Ultrasonography) than those of non-diabetic individuals.The study also evaluated the differences in lens thickness (LT) between right and left eyes of diabetic retinopathy patients, and the differences in LT between proliferative and background retinopathy cases.

Methods: This case-control study was conducted on 68 subjects (34 cases and 34 controls) aged 20-60 years in the Department of Radiology and Imaging, BIRDEM Hospital from March 2015 to February 2016. Adult patients suffering from type-2 diabetic retinopathy confirmed by slit-lamp examination were selected as cases, while apparently healthy subjects were taken as control. Patients with history of heart failure, ocular surgery, acute eye conditions, such as, conjunctivitis, scleritis, cataract or any other co-morbidities were excluded. Ocular mean lens thickness was measured by high resolution ultrasonography and was compared between case and control groups by Un-paired t-Test.

Results: The study showed that type 2 diabetic patients had significantly thicker lenses than their non-diabetic counterparts (in right eye:case 4.1 ± 0.3 mm versus control 3.7±0.1 mm, p<0.001 and in left eye:case 4.2 ± 0.3 mm vs. control 3.7±0.1 mm, p<0.001). The study also revealed that proliferative retinopathy cases had thicker lenses than any other diabetic retinopathy groups (p < 0.05) and there was also statistically significant difference of HbA1c level between proliferative and background type II diabetic retinopathy cases (p<0.05)

Conclusion: The study concluded that lens thickness is increased in type-2 diabetic retinopathy patients than that in non-diabetic healthy controls.The proliferative diabetic retinopathy cases possess thicker lens than the background retinopathy cases.

Ibrahim Card Med J 2020; 10 (1&2): 40-44
Clinical and Angiographic Characteristics of Female Patients Undergoing Coronary Angiography in a Tertiary Hospital in Bangladesh
Authors: Nasrin Sahela , Cader F Aaysha , Haq M Maksumul
Published: July 2021

Background & objective: Coronary artery disease (CAD) is increasingly prevalent among female population, particularly in South Asia, and a large number of female patients currently undergo coronary angiography for a variety of indications. The objective of this study was to investigate the clinical and angiographic characteristics of female patients undergoing coronary angiogram, in a tertiary cardiac center in Bangladesh.

Methods: This retrospective observational study was conducted at Ibrahim Cardiac Hospital & Research Institute, Dhaka, Bangladesh during the period from 1st September 2005 to 31st August 2016. A total of 7,627 female patients who underwent coronary angiography were included. Obstructive coronary artery disease (CAD) was defined as a stenosis ≥70% in at least one of the three major coronary arteries or a stenosis ≥50% in left main stem.

Result: Nearly two-thirds (64.4%) of patients comprised of age group of 41-60 years with mean age of the patients being 55.4 ± 10.2 years. Unstable angina (38.2%) was the commonest indication for coronary angiography followed by stable ischemic heart disease (25.1%), non-ST segment elevation myocardial infarction (12.8%), ST segment elevation myocardial infarction (9.3%), left ventricular failure (7.5%), post-myocardial infarction angina (6%) and atypical chest pain (1.3%). Over three quarters were hypertensive 68.3% were diabetic and 29% and dyslipidemiac. Over 40% of the patients were overweight and 20% were obese. On trans-thoracic echocardiography, 65.2% had normal left ventricular (LV) systolic function; 17.6% and 9.9% had mild and moderate LV systolic dysfunction respectively. Nearly 30% had normal epicardial coronary arteries on angiography, while 17.4%, 16.5% and 37.2% had triple vessel disease (TVD), double vessel disease (DVD) and single vessel disease (SVD) respectively. Following angiography, 33.4% were advised PCI, 30.2% optimal medical management and 15.3% CABG. A few (3.2%) were advised for revascularization either by CABG or PCI.

Conclusion: Unstable angina is the most common indication for coronary angiography among Bangladeshi females. A clustering of risk factors for CAD such as hypertension, diabetes and overweight or obesity are observed in them. Of the obstructive CADs, SVD is the most frequent finding, indicating that females undergoing CAG are likely to have diffuse CAD, although left main disease is not uncommon in this population. Further comparative studies with matched male population are recommended to find the differences in clinical and angiographic findings with respect to sex.

Ibrahim Card Med J 2017; 7 (1&2): 9-14
Management of Emphysematous Pyelonephritis and Subsequent Renal Functional Outcome
Authors: Khan Md Mohiur Rahman , Rahman Fahmin , Rahman Shafiqur , Chowdhury ATM Mowladad , Hasan Mirza Mahbubul
Published: July 2021

Background & objective: Emphysematous pyelonephritis (EPN) is an acute severe necrotizing infection of the renal parenchyma and its surrounding tissues that is caused by the presence of gas in the renal parenchyma, collecting system or perinephric tissue.The present study was intended to assess the functional status of the emphysematous kidney recovered from infection after treatment.

Methods: This prospective study was conducted on 50 consecutive cases of emphysematous pyelonephritis, who were admitted in BIRDEM General Hospital from January 2011 to June 2012. Patients with EPN were selected after taking history, clinical examination and radiological image findings. Based on clinical parameter and radiological grading, patients were categorized for medical or surgical intervention. The forms of surgeries were open drainage or nephrectomy. Renal parenchymal destruction more than 50% on CT required nephrectomy.

Results: The mean age of the patients at diagnosis was 47.5 ± 11.8 years (range: 26-70 years). The patients were predominantly female (82%), invariably diabetic and primarily presented with fever (88%) and loin pain (82%) followed by dysuria (60%). Over three-quarters (78%) of the patients had poor glycemic control (HbA1c >7%) and over half (54%) were classified as having class 1 or 2 disease and the rest had class 3 and 4 diseases. Escherichia coli was the commonest pathogen found in urine cultures (70%). Over half (56%) received medical treatment alone. In the surgical intervention group, patients were mostly toxic with spreading or severe localized infection, fever and were deteriorating or static even after three days of aggressive intravenous antibiotic treatment. Of the 22 patients who underwent surgery, nephrectomy was performed in 8(16%) and open drainage in 14(28%) cases. The overall survival rate was 94%. Average serum creatinine level was found to decrease gradually during follow up. The function of the preserved kidney was found to improve in the subsequent follow up.

Conclusion: Emphysematous pyelonephritis predominantly affects diabetic females. Kidney preservation should be the primary target in treating EPN. Adequate resuscitation, diabetic control and parenteral antibiotic are the treatment of choice. Rapid drainage and nephrectomy should be performed in advanced stages. The focus of management of patients with emphysematous pyelonephritis should not only to improve survival but also salvage of the renal unit, for the affected kidney may still function once the infection is eradicated.

Ibrahim Card Med J 2017; 7 (1&2): 57-63
Association between Food Behaviour of Pregnant Women and Status of Serum Vitamin B12 and Neonatal Outcome – A Cross-Sectional Study
Authors: Afrooz Rowshan , Ghosh Lipika , Md Faruq Abul Kalam , Islam Mitheel Ibna
Published: July 2021

Background & objective: To find the association between serum vitamin B12 and food behavior of the pregnant women and its influence on perinatal outcome.

Methods: This cross-sectional study was conducted in the Department of Obstetrics & Gynaecology, Bangabandhu Sheikh Mujib Medical University (BSMMU), Dhaka between June 2012 to July 2013. A total of 102 uncomplicated pregnant women attending at the Obstetrics & Gynaecology Department of BSMMU, Dhaka were the study population. Plasma vitamin B12 was measured by Abbott Axsym System using a Enzyme Immuno Assay Technique with the blood collected in a plain test tube. A serum vitamin B12 level of < 200 pg/mL was considered as low serum vitamin B12 level. The outcome variables were birth weight, small-for-date, neural tube defects and other congenital malformations.

Result: The selected pregnant women were housewife (74.5%) from low socioeconomic strata. They were generally urban resident (90.2%) with mean age being 26.4 years. In terms of education 17.6% were primary level, 30.4% SSC level, 31.4% HSC level and 20.6% graduate and higher level educated. Majority (90.2%) was urban resident with average monthly family income being Taka 29460. One-third (33.3%) was overweight and 6.9% obese. Two-thirds (66.7%) were at 37-39 weeks of gestation and nullipara. More than 60% received ANC (antenatal care) aregularly. Over one-third (35.3%) had low serum vitamin B12 (< 200 pg/mL). The food behaviour of the women was found to be associated with vitamin B12 deficiency. The pregnant women with low serum vitamin B12 (< 200 pg/ml) had significantly lower weekly consumption of fishes and eggs which are the rich source of vitamin B12. The weekly fish, eggs and amount of milk consumed by the pregnant women with low serum vitamin B12 were much lower than those consumed by the pregnant women with normal serum vitamin B12. The pregnant women with low serum vitamin B12 were more likely to carry a higher risk of adverse perinatal outcome. The incidences of low-birth weight and small-for-dates were staggeringly higher in women with low serum vitamin B12 (33.3% and 27.8% respectively) compared to those in women with normal serum vitamin B12.

Conclusion: The study concluded that pregnant women with low serum vitamin B12 are accustomed to taking low fish and eggs in their daily diet compared to those who have normal serum vitamin B12. The incidence of low birth weight and small-for-date babies are more prevalent in the pregnant women with subclinical deficiency of vitamin B12.

Ibrahim Card Med J 2017; 7 (1&2): 84-91
Global Burden of Non-communicable Diseases:Preparedness of Bangladesh to Combat the Menace
Authors: Amin Md Nurul
Published: July 2021

Abstract not available

Ibrahim Card Med J 2018; 8 (1&2): 5-9