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The process of additive manufacturing (AM), commonly known as 3D printing, is a method of constructing a component by progressively adding material in layers using digital 3D design information. As part of 'Industry 4.0,' many industrial technologies are rapidly increasing to thrive in the twenty-first century. This study goes over seven different types of additive manufacturing in great detail. These technologies make it possible to make complex, high-value parts quickly and in small quantities without using as much energy or material or making as many tools as subtractive manufacturing does. Besides, AM also possesses some particular challenges, like post-processing, material unavailability, software issues, etc. The application of AM is expanding rapidly from micro to macro-scale sectors. 3D printing technology will change industrial operations in the following years. Eventually, the elected technology will be closely related to the proposed function. [ABSTRACT FROM AUTHOR]

Milk yield, protein and fat content are regulated by milk protein genes. However, genetic makeup of different milk protein genes of cattle available in Bangladesh is not known. This study determined the genetic variants of kappa-casein (κ-CN) and a-lactalbumin (α-LA) gene in cattle. DNA was extracted from 50 blood samples collected from indigenous and crossbred cattle. Polymerase chain reaction (PCR) was performed with gene specific primers. For genotyping PCR products of κ-casein gene was digested with HindIII and HaeIII restriction enzymes while the PCR products of α-LA gene was digested with Bsp1286I. Overall from all the tested samples we could amplify specific DNA viz. 935 and 429 bp for κ-CN and α-LA genes, respectively. In case of κ-CN gene 30 samples were analyzed for genotyping and of these 66.67, 30.00 and 3.33% samples were genotyped as AA, AB and BB, respectively. AA genotype was found dominant for κ-CN gene. Allele frequency for A was 82%. AA genotype was found higher in indigenous (0.366) than crossbred (0.30) animals. Homozygous BB genotype was not found in crossbred animals. For a-LA gene 50 samples were genotyped and all the samples (100%) were belonging to AA genotype. Three genetic variants of κ-CN gene viz. AA, AB & BB and one genotype (AA) of α-LA gene were detected in tested samples. Alleles of both the genes are reported to be associated with higher milk, protein, and fat yields. [ABSTRACT FROM AUTHOR]

Abstract: We have investigated the thermoluminescent response and fading characteristics of germanium- and aluminium-doped SiO2 optical fibres. These optical fibres were placed in a solid phantom and irradiated using 6 and 10MV photon beams at doses ranging from 0.02 to 0.24Gy delivered using a linear accelerator. In fading studies, the TL measurements were continued up to 14 days post-irradation. We have investigated the linearity of TL response as a function of dose for Ge-, Al-doped optical fibre and TLD-100 obtained for 6 and 10MV photon irradiations. We have concentrated on doses that represent a small fraction of that delivered to the tumour to establish sensitivity of measurement for peripheral exposures in external beam radiotherapy. [Copyright &y& Elsevier]