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"Chlorella pyrenoidosa (C. pyrenoidosa) contains Chlorella Growth Factor (CGF), which consists of protein and polysaccharides. CGF is located inside the nucleus of cells and is beneficial to humans as a food supplement, an immunity booster, and an antioxidant. CGF formation of C. pyrenoidosa is influenced by medium composition. C. pyrenoidosa INK was cultured in a modified basal medium (MBM) with various concentrations of Mg2+ (0.5, 1.0, and 1.5 g/L) and Fe2+ (3.5×10-4 and 5.0×10-4 g/L). The experiments were run and analyzed under a completely randomized design using a 2-L bottle with three replications.The results showed that MBM with 1.0 g/L of Mg2+ and 3.5×10-4 g/L of Fe2+ yielded the optimal growth curve for C. pyrenoidosa. Analysis of protein content was carried out using the Lowry method with a spectrophotometer at λ=750 nm, and the obtained results were 0.0974 mg/mL (extract) and 6.4097 mg/ml (supernatant). Furthermore, analysis of glucose content was carried out using the phenol sulfate method (λ = 490 nm), and the obtained results were 49.331 ppm (extract) and 1566.911 ppm (supernatant). Analysis of amino acids in CGF using liquid chromatography-mass spectrometry (LC-MS) indicated the presence of tyrosine, proline, glutamate, alanine, valine, tryptopan, phenylalanine, methionine, and leucine-isoleucine.

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Pengaruh Konsentrasi Mg2+ dan Fe2+ dalam Media Kultur terhadap Pembentukan CGF oleh Mikroalga Chlorella pyrenoidosa INK dan Analisis Asam Amino dengan Kromatografi Cair-Spektrofotometri Massa. Chlorella pyrenoidosa (C. pyrenoidosa ) mengandung Chlorella Growth Factor (CGF), yang terdiri dari protein dan polisakarida. CGF terletak di dalam inti sel dan bermanfaat bagi manusia sebagai suplemen makanan, booster imunitas, dan antioksidan. Pembentukan CGF oleh C. pyrenoidosa dipengaruhi oleh komposisi medium. C. pyrenoidosa INK dikultur dalam media basal dimodifikasi (MBM) dengan berbagai konsentrasi Mg2+ (0,5, 1,0, dan 1,5 g/L) dan Fe2+ (3,5×10-4 dan 5,0×10-4 g/L). Percobaan dilakukan menggunakan rancangan acak lengkap dalam botol 2L dengan tiga kali pengulangan.Hasil penelitian menunjukkan bahwa MBM mengandung Mg2+ 1.0 g/L dan Fe2+ 3.5×10-4 g/L menghasilkan kurva pertumbuhan C. pyrenoidosa yang optimal. Analisis kandungan protein dilakukan dengan metode Lowry menggunakan spektrofotometer pada λ=750 nm, menghasilkan 0,0974 mg/mL (ekstrak) dan 6,4097 mg/mL (supernatan). Selanjutnya, analisis kadar glukosa dilakukan dengan metode fenol sulfat (λ=490 nm), hasil yang diperoleh 49,331 ppm (ekstrak) dan 1566,911 ppm (supernatan). Analisis asam amino dalam CGF menggunakan spektrometri massa kromatografi cair (KC-SM) menunjukkan adanya tirosin, prolin, asam glutamat, alanin, valin, triptopan, fenilalanin, metionin, dan leusin-isoleusin."

"Proses dispersi pigmen merupakan proses paling penting dan kompleks pada manufaktur tinta cetak. Sebuah perusahaan manufaktur tinta cetak multinasional memproduksi tinta cetak melalui produk setengah jadi atau intermediate yang kemudian dikonversi menjadi tinta cetak siap pakai. Pigmen konsentrat merupakan intermediate dengan proses manufaktur yang paling kompleks karena melibatkan proses dispersi pigmen. Namun, selama periode 2019-2021 nilai persentase Right First Time produksi pigmen konsentrat ada di bawah 70%. Analisis penyebab cacat untuk meningkatkan kualitas pigmen konsentrat sulit dilakukan karena banyaknya faktor yang terlibat dalam prosesnya. Seiring dengan perkembangan teknologi, penggunaan metode Data Mining pada dunia industri telah banyak diteliti. Salah satu aktivitas industri yang dilakukan dengan metode Data Mining adalah klasifikasi kualitas. Pada penelitian ini dilakukan pemodelan klasifikasi kualitas tinta cetak berdasarkan proses dispersi pigmen menggunakan Decision Tree, C4.5 dan CART. Penelitian ini dilakukan dengan kerangka kerja QM-CRISP-DM merujuk pada penelitian Schafer et al. (2018). Data didapatkan dari logbook produksi dan database ERP perusahaan dari tahun 2019-2021. Model dibuat dengan menggunakan 15 variabel independen dengan target variabel kehalusan partikel, cacat atau tidak cacat. Penggunaan metode over-sampling dengan metode cross-validation menghasilkan akurasi tertinggi, yaitu 83.33%. Perbaikan proses guna mendapat produk yang tidak cacat diajukan berdasarkan model yang telah dibuat.

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The pigment dispersion process is the most important and complex process in printing ink manufacturing. A printing ink manufacturing company produces ink through semi-finished or intermediate products. Pigment concentrate is an intermediate with the most complex manufacturing process because it involves a pigment dispersion process. However, during the 2019-2021 period, the percentage value of the Right First-Time percentage of concentrated pigment production is below 70%. Analysis of the causes of defects to improve the quality of pigment concentrates is difficult because of the many factors involved in the process. Along with technological developments, the use of Data Mining methods in the industrial world has been widely studied. One of the industrial activities carried out using the Data Mining method is quality classification. In this study, a modeling of the quality classification of printing ink based on the pigment dispersion process was carried out using Decision Tree, C4.5 and CART. This research was conducted using the QM-CRISP-DM framework referring to the research of Schafer et al. (2018). The data is obtained from the production logbook and the company's ERP database from 2019-2021. The model is made using 15 independent variables with particle fineness as target variable, defect and not defect. Model with balanced dataset by SMOTE and trained by cross-validation method showed accuracy at 83.33%. Furthermore, improvement actions were proposed based on the constructed model"

"To obtain the suitable Material for solving set-off problem in intaglio printing, we found the additive which are made from mixed waxs of polyethylene wax (PE wax), polytetrafluorethylene wax (RIFE wax) and carnauba wax. PE wax and PTFE wax used as already in mixed, form which called polyfluo wax. In it's production, polyfluo wax was mixed with carnauba wax in 97 % with 3 % proportion, this mixed was added with solvent in 70 To wax with 30 °/o proportion of solvent and it is heated up to 120 ° C and stirred up, then cooling off until reach the room temperature, this additive called anti set-off. In processing of intaglio printing, the ink used was added by 4 % of this additive to obtain the result of intaglio printing without set-off problem.

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Untuk mendapatkan bahan yang cocok dalam upaya mengatasi terjadinya set-off pada hasil cetak intaglio, diperoleh bahan additive yang dibuat dan campuran bahan wax, yaitu wax Poliethilen (wax PE), wax Palitetrafluorethilen (wax PTFE) dan wax Camauba. Wax PE dan wax PTFE yang digunakan sudah berupa campuran yang disebut dengan wax Polifluo. Dalam pembuatannya wax Polifluo dicampur wax Carnauba dengan perbandingan 97 % dan 3 %. Selanjutnya campuran wax ini ditambah dengan solvent dengan perbandingan 70 % wax dan 30 % solvent lalu dipanaskan sambil diaduk sampai temperatur 120 ° C , kemudian didinginkan perlahan-lahan sampai terperatur kamar. Behan additive yang dibuat ini disebut anti set-off. Dalam proses cetak intaglio tinta yang akan digunakan ditambah dengan bahan additive ini sebanyak 4 %, agar hasil cetak intaglio yang didapat tidak mengalami set-off."

"This book includes a selection of reviewed papers presented at the 9th China Academic Conference on Printing and Packaging, which was held in November 2018 in Shandong, China. The conference was jointly organized by the China Academy of Printing Technology and Qilu University of Technology (Shandong Academy of Sciences). With 8 keynote talks and over 200 presented papers on graphic communication and packaging technologies, the conference attracted more than 300 scientists.The proceedings cover the recent findings in color science and technology, image processing technology, digital media technology, mechanical engineering and numerical control, materials and detection, digital process management technology in printing and packaging, and other technologies. As such, the book is of interest to university researchers, R&D engineers and graduate students in the field of graphic arts, packaging, color science, image science, material science, computer science, digital media, and network technology."

"Tinta Poliuretan akan digunakan sebagai bahan pengikat (binder) untuk tinta yang dapat diaplikasikan ke produk-produk makanan. Proyek pabrik produksi Tinta Poliuretan ini adalah sebuah turn-key project yang dilakukan melalui serangkaian proses keinsinyuran multi-disiplin. Proses produksi ini sangat baru dan mengandalkan hasil peningkatan (scale up) dari fasilitas pabrik percontohan. Proses praktik keinsiyuran seperti dijelaskan di laporan ini dimulai dari desain, hingga menjadi fasilitas pabrik produksi Tinta Poliuretan dengan skala komersial yang dapat beroperasi sesuai harapan. Proses keinsinyuran seperti ini menjadi sebuah tren di industri secara umum, dimana investasi proses atau produk baru dan perluasan pabrik menjadi salah satu tumpuan untuk pertumbuhan bisnis di industri. Desain teknik praktis yang sejalan dengan teknologi, peralatan, dan metode yang ada di pasar, akan menghasilkan produk atau sistem yang dapat menghasilkan produk berkualitas sesuai harapan, secara aman, tepat waktu, dan sesuai anggaran dalam kasus bisnis investasi klien industri.

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Polyurethane ink will be used as a binder for ink that can be applied to food products. This Polyurethane Ink production plant project is a turn-key project carried out through a series of multi-disciplinary engineering processes. This production process is very new and relies on the results of scaling up from pilot plant facilities. The engineering practice process described in this report starts from design, to becoming a commercial-scale Polyurethane Ink production plant facility that can operate as expected. Engineering processes like this are becoming a trend in the industry in general, where investment in new processes or products and factory expansion is one of the cornerstones for business growth in the industry. Practical engineering design that is in line with existing technologies, equipment, and methods on the market, will result in a product or system that can produce quality products as expected, safely, on time, and within budget in the investment business case of industrial clients."

"This book discusses the functional ink systems of graphene and related two-dimensional (2D) layered materials in the context of their formulation and potential for various applications, including in electronics, optoelectronics, energy, sensing, and composites using conventional graphics and 3D printing technologies. The authors explore the economic landscape of 2D materials and introduce readers to fundamental properties and production technologies. They also discuss major graphics printing technologies and conventional commercial printing processes that can be used for printing 2D material inks, as well as their specific strengths and weaknesses as manufacturing platforms. Special attention is also paid to scalable production methods for ink formulation, making this an ideal book for students and researchers in academia or industry, who work with functional graphene and other 2D material ink systems and their applications.- Explains the state-of-the-art 2D material production technologies that can be manufactured at the industrial scale for functional ink formulation;- Provides starting formulation examples of 2D material, functional inks for specific printing methods and their characterization techniques;- Reviews existing demonstrations of applications related to printed 2D materials and provides possible future development directions while highlighting current knowledge gaps;- Gives a snapshot and forecast of the commercial market for printed GRMs based on the current state of technologies and existing patents."