Analisis Performansi Pada Heat Exchanger Jenis Sheel and Tube Tipe Bem Dengan Menggunakan Perubahan Laju Aliran Massa Fluida Panas (Mh)

Perpindahan panas adalah proses yang sangat penting dalam dunia perindustrian. Ekonomisnya suatu proses pabrik sering ditentukan oleh keefektifan dari pemanfaatan dan recovery panas yang dikandung suatu bahan. Banyaknya steam dan sistim pendingin yang dibutuhkan ditentukan oleh efisiensi dari alat yang digunakan. Ada banyak jenis heat exchanger yang dapat digunakan dalam industri, tergantung pada proses apa yang akan ditangani. Kemudian dari satu jenis mempunyai bermacam-macam tipe, tetapi yang penting dari karakter heat exchanger ini adalah terjadinya perpindahan panas dari fase yang bersuhu tinggi ke fase yang bersuhu rendah atau sebaliknya sesuai dengan dari fungsinya. Untuk menentukan besar kecilnya panas yang dipindahkan pada beda temperatur yang sama, ini tergantung kepada harga koefisien perpindahan panas total dari alat yang digunakan, dimana pada suatu alat heat exchanger tersebut koefisien ini dapat diperkirakan besarnya melalui perhitungan

Perancangan Overhead Crane Tipe Single Girder Kapasitas 3 Ton Di Bengkel Teknik Mesin Ft Umj

Pesawat pengangkat adalah alat yang digunakan untuk memindahkan benda atau material dari suatu tempat ke tempat yang lain. Salah satu pesawat pengangkat yang digunakan adalah Overhead Crane, yaitu kombinasi dari mekanisme terpisah dari frame atau struktur. Tipe overhead crane yang akan dirancang adalah jenis single girder (ELKE). Karena overhead crane jenis ini adalah yang cocok dengan kondisi di lapangan dan sesuai dengan kebutuhan yang ada di bengkel Teknik Mesin FT UMJ. Metode penelitian yang digunakan adalah dengan study literature, observasi kelapangan, perhitungan terhadap desain. Overhead Crane adalah suatu alat angkat yang dapat diaplikasikan dibengkel Teknik Mesin FT UMJ. Overhead Crane yang dirancang adalah tipe Single Girder berkapasitas 3 ton dengan panjang 12 meter dan bentangan 6 m. Alat ini mempunyai sumber tenaga dari listrik sehingga tidak tergantung dengan BBM. Dan dengan ini, maka pekerjaan dapat dilakukan dengan aman, cepat dan efisien

Environmental marketing of natural resources

Nowadays, more and more urgent need to preserve the environment, as the pace of consumption grow, and this causes irreparable damage to the biosphere. Therefore, many large companies began to think about the environmental safety of its products, which led to the emergence of such a thing as an environmental marketing, which is now becoming more popular

Staff training in terms of digital economy development: the experience of Polotsk State University (Republic of Belarus)

The article examines the features of the educational process in conditions of digital transformation of economy, as well as key competencies and skills that required in the digital economy. The main trends in the sphere of education are described. The experience of the Polotsk State University countries in the field of digital transformation of education is presented

The Berry phase in inflationary cosmology

We derive an analogue of the Berry phase associated with inflationary cosmological perturbations of quantum mechanical origin by obtaining the corresponding wavefunction. We have further shown that cosmological Berry phase can be completely envisioned through the observable parameters, viz. spectral indices. Finally, physical significance of this phase is discussed from the point of view of theoretical and observational aspects with some possible consequences of this quantity in inflationary cosmology.Comment: 9 pages, Modified version to appear in Classical and Quantum Gravity. arXiv admin note: text overlap with arXiv:quant-ph/0307084 by other author

Peculiarities of using G Suite for Education services in the educational process of Polotsk State University

The article begins by defining e-learning as the use of technology for teaching and learning. There is a significant interest in identifying the advantages, disadvantages and challenges of using information technologies in the studying process for full-time studying, where e-learning is a component of the educational process, rather than a substitute for it.The article then turns to a practical case study of e-learning in Polotsk State University. The indicators and features of use of the G Suite for Education platform services in the educational process of Polotsk State University are analyzed

Polotsk State University in the Educational Space of Polotsk Region

The article considers the role of university education in the regional space. It is proved that the regional university is faced with the task of working out a qualitatively new educational policy, as well as the fact that the mutual influence of the university and the region is one of the leading factors of regional development. The university provides an influx of young people into the region from other areas, leading to an increase in the number of young specialists who are actively involved in new areas of the economy. Polotsk State University is a major educational, scientific and cultural centre of the northern region of the Republic of Belarus. It has a direct impact on the improvement of the quality of life in Polotsk region, providing a wide and diverse range of professional, educational, cultural and leisure services to its population, especially young people, and organizing various types of vocational training and retraining of employees in accordance with the demand of the region for a particular profession and specialty. In addition, the university concentrates the bulk of scientific research of fundamental importance for the sustainable socio-economic and cultural development of the region

The use of new pedagogical practices and modern technologies to increase the competence level of I and II stage students of the specialty “ Physical Training” of Polotsk State University

The changes taking place in the higher education system in the Republic of Belarus require the search for new pedagogical teaching technologies, the updating of tools, methods and methodological techniques. At Polotsk State University, innovative pedagogical practices and technologies, information and communication technologies and distance learning technologies are widely used in the training of specialists in physical education. When choosing and implementing new pedagogical practices, technologies, forms and methods of teaching, constant requests for the formation of future specialists ' competencies are taken into account. The use of innovative teaching methods increases the quality of students ' knowledge, interest in studying the course and future professional activity

Detection of subclonal L1 transductions in colorectal cancer by long-distance inverse-PCR and Nanopore sequencing

Long interspersed nuclear elements-1 (L1s) are a large family of retrotransposons. Retrotransposons are repetitive sequences that are capable of autonomous mobility via a copy-and-paste mechanism. In most copy events, only the L1 sequence is inserted, however, they can also mobilize the flanking non-repetitive region by a process known as 3' transduction. L1 insertions can contribute to genome plasticity and cause potentially tumorigenic genomic instability. However, detecting the activity of a particular source L1 and identifying new insertions stemming from it is a challenging task with current methodological approaches. We developed a long-distance inverse PCR (LDI-PCR) based approach to monitor the mobility of active L1 elements based on their 3' transduction activity. LDI-PCR requires no prior knowledge of the insertion target region. By applying LDI-PCR in conjunction with Nanopore sequencing (Oxford Nanopore Technologies) on one L1 reported to be particularly active in human cancer genomes, we detected 14 out of 15 3' transductions previously identified by whole genome sequencing in two different colorectal tumour samples. In addition we discovered 25 novel highly subclonal insertions. Furthermore, the long sequencing reads produced by LDI-PCR/Nanopore sequencing enabled the identification of both the 5' and 3' junctions and revealed detailed insertion sequence information.Peer reviewe