Quasi-Continuous Production and Separation of Lysozyme Crystals on an Integrated Laboratory Plant

Vacuum crystallization with subsequent solid–liquid separation is a suitable method to produce and separate the temperature-sensitive protein lysozyme. The conventional process is performed batch-wise and on different devices, which in turn leads to disadvantages in terms of energy efficiency, contamination risk and process control. This publication therefore focuses on the application of the previously multistage process to a quasi-continuous, integrated single plant. The transfer occurs successively and starts with the substitution of the batch vessel by a process chamber. Afterwards, the filtration scale is increased and the formerly deployed membrane is replaced by an industrial filter cloth. Based on the results of these experiments, the complete process chain is successfully transferred to an integrated laboratory plant.

Acoustic Safety Management at the Locksmith’s Workplace Mechanic-Repairman to Replace the Filter Material in the Technological Process of Obtaining of Apatite Concentrate

In this work, measures are being developed to reduce the noise level at the workplace of a mechanic-repairman to replace filter cloth. Based on the results of production control and a thorough assessment of working conditions, the source of noise was determined to be the VDN-17 fan. The analysis of Russian and foreign studies in the field of the negative impact of noise on the human health and methods of dealing with industrial noise has been carried out. As a result, a technical method of reducing negative impact of noise was selected and the acoustic efficiency of the muffler for the VDN-17 fan was calculated.

Pengaruh Strategi Pemasaran, Pemberdayaan, dan Pelatihan Terhadap Produktivitas Pengrajin Kain Tapis di Kabupaten Pringsewu

The purpose of this study was to see the effect of Marketing Strategy, Empowerment and Training on the productivity of the marketing filter cloth craftsmen. The number of respondents studied was 78 people, using saturated samples. Data collection was done by distributing questionnaires. The analysis technique used is multiple linear regression. The findings in this study are Marketing Strategy, Empowerment and Training have a positive and significant effect on employee work productivity.