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Статті в журналах з теми "Engineering preparation"

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Автор: Grafiati

Опубліковано: 10 грудня 2022

Оновлено: 29 січня 2023

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1

Mohanty, Atasi, and Deepshikha Dash. "Engineering Education in India: Preparation of Professional Engineering Educators." Journal of Human Resource and Sustainability Studies 04, no. 02 (2016): 92–101. http://dx.doi.org/10.4236/jhrss.2016.42011.

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2

Oleinik, Pavel Pavlovich, Larisa Stsnislavovna Grigoryeva, and Viktor Isaevich Brodsky. "Outstripping Engineering Preparation of Construction Sites." Applied Mechanics and Materials 580-583 (July 2014): 2294–98. http://dx.doi.org/10.4028/www.scientific.net/amm.580-583.2294.

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Анотація:

The basic scheme of intensive implementation preparatory work, the general form of the formulas for determining the structure and amount of preparatory work performed prior to the start of construction.

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3

Hasanova, A. M., F. Y. Aliyev, S. B. Mammadli, D. R. Nurullayeva, and B. A. Mammadov. "Preparation of Oligo (Hexene-1-So-Indenes) and Investigation of Its Products as Additives to Oils." International Journal of Engineering Research and Science 3, no. 11 (November 30, 2017): 21–26. http://dx.doi.org/10.25125/engineering-journal-ijoer-nov-2017-6.

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4

Vlasov, A. "Simulation training complex for preparation engineering staff." Актуальные направления научных исследований XXI века: теория и практика 3, no. 5 (December 2, 2015): 55–59. http://dx.doi.org/10.12737/16205.

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5

Bondi, Hermann. "Preparation for careers in engineering and science." IEE Proceedings A Physical Science, Measurement and Instrumentation, Management and Education, Reviews 135, no. 4 (1988): 227. http://dx.doi.org/10.1049/ip-a-1.1988.0035.

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6

Lifshits, V. M., A. E. Korobeynikova, and I. V. Dunichkin. "Aeration modes and engineering preparation of slopes." Vestnik MGSU, no. 9 (September 2018): 1043–54. http://dx.doi.org/10.22227/1997-0935.2018.9.1043-1054.

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7

Gong, Ying, Guang Ting Han, Yuan Ming Zhang, Jin Feng Zhang, Wei Jiang, Xiao Wei Tao, and Sheng Chuan Gao. "Preparation of alginate membrane for tissue engineering." Journal of Polymer Engineering 36, no. 4 (May 1, 2016): 363–70. http://dx.doi.org/10.1515/polyeng-2015-0065.

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Abstract Sodium alginate was provided with good processibility according to physical and chemical characterization of itself. Alginate scaffold has been used for preparation of soft or hard tissue engineering, but the structure of the scaffold needs to be improved for better performance for skin tissue engineering. In this study, highly porous alginate membrane was formed with ionic crosslinking. High molecular weight (Mw=3.0×105) alginate showed the best film-forming property. Therefore, the appropriate molecular weight should be selected for improving its performance. With freeze-drying technology and pre-freezing at -10°C, we have built the honeycomb materials (porosity=92.06%). Changing the pre-freezing temperature can regulate pore structure to some extent. With the increased dosage of sodium alginate, the porosity and the pore size of the materials were reduced, whereas tensile strength and elongation at break increased. Water absorption performance of the materials was good. The above studies lay a foundation for construction of skin tissue engineering scaffold.

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8

Perevislov, S. N., M. V. Tomkovich, A. S. Lysenkov, and M. G. Frolova. "Preparation and Properties of Reinforced Engineering Materials." Refractories and Industrial Ceramics 59, no. 5 (January 2019): 534–44. http://dx.doi.org/10.1007/s11148-019-00267-4.

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9

Yang, B., R. Nazari, D. Elmo, D. Stead, and E. Eberhardt. "Data preparation for machine learning in rock engineering." IOP Conference Series: Earth and Environmental Science 1124, no. 1 (January 1, 2023): 012072. http://dx.doi.org/10.1088/1755-1315/1124/1/012072.

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Abstract Digitalization in rock engineering has resulted in significant technological advancements and the increasing use of machine learning techniques. As rock engineering transitions into becoming more data-driven, machine learning can help rock engineers improve the efficiency and utilization of large data sets in the design process. While machine learning is a powerful tool, the success of machine learning algorithms is intrinsically related to the quality and quantity of data available. It is commonly accepted that machine learning algorithms that are trained on poor quality data will result in poor and inaccurate (i.e. highly subjective) results. To limit the human factors that result from using data that represent qualitative assessments rather than objective measurements of physical properties, it is imperative to improve the data analysis and preparation/labelling process. Data preparation is especially important when applying machine learning to rock engineering problems due to the inductive and empirical nature of the design process as a result of the inherent variability of geological materials. Despite data preparation accounting for more than half of the machine learning process, there is limited research on data preparation for machine learning in rock engineering. This paper aims to fill this gap by providing a set of guidelines on the necessary data preparation steps for applying machine learning to rock engineering problems, thereby helping rock engineers improve the performance of their machine learning models.

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10

Resende, Daniel, Camila Dornelas, Maria I. B. Tavares, Lucio Cabral, Luis Simeoni, and Ailton Gomes. "Preparation of Modified Montmorillonite with Benzethonium and Benzalconium Chloride for Nanocomposites Preparation." Chemistry & Chemical Technology 3, no. 4 (December 15, 2009): 291–94. http://dx.doi.org/10.23939/chcht03.04.291.

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Modified clays were intercalated with benzethonium chloride and benzalkonium chloride by exchanging the sodium ions. The organoclays obtained were characterized by X-ray diffraction (XRD); thermogravimetric analysis (TGA) and low field nuclear magnetic resonance (NMR), through proton spin-lattice relaxation time measurements (T1H). From the characterization data, the formation of organically modified clays was confirmed. These products can probably be used to prepare PVC nanocomposites with superior processing characteristics due to better chemical structure of clay surfactants.

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11

Ayoola, Wasiu, Stephen Durowaye, Kenneth Andem, Olujide Oyerinde, and Jesutofunmi Ojakoya. "Effects of Surface Preparation on the Corrosion Behavior of Mild Steel." Tikrit Journal of Engineering Sciences 29, no. 1 (November 1, 2021): 16–25. http://dx.doi.org/10.25130/tjes.29.1.2.

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Surface preparation of engineering materials is necessary for preventing corrosion and subsequent failure of materials in service. There are different methods of surface preparations that can affect engineering materials in different ways. This study investigated the effect of surface preparation on the corrosion behavior of zinc sprayed and unsprayed mild steel. Quantitative analysis and potentiodynamic polarization techniques were used to evaluate the immersed samples of different surface preparations. The results indicated that the least corrosion rate was observed for the uncoated sample prepared with CC1200 grit paper at 0.041 mpy and successive samples in the order of CC220 grit paper at 0.047 mpy < P60 grit paper at 0.052 mpy < filing at 0.064 mpy and grinding at 0.074 mpy after 42-days of immersion. The prepared samples that were further coated with zinc spray demonstrated a similar trend. The sample prepared with CC1200 grit paper and further coated with zinc spray exhibited the lowest corrosion rate of 1.35 x 10-9 mpy. Potentiodynamic polarization results further suggested that the same behavior was observed in the quantitative analysis.

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12

BURNOUF, THIERRY. "BLOOD-DERIVED, TISSUE ENGINEERING BIOMATERIALS." Biomedical Engineering: Applications, Basis and Communications 16, no. 06 (December 25, 2004): 294–304. http://dx.doi.org/10.4015/s1016237204000414.

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Fibrin sealant and platelet gels are human blood-derived, biodegradable, non toxic, surgical products obtained by mixing a fibrinogen concentrate or a platelet rich plasma with thrombin, respectively. Fibrin sealant is now a well known surgical tool increasingly used to stop or control bleeding, or to provide air and fluid tightness in many surgical situations. Platelet gels are newly developed preparations that are of specific interest because they contain numerous physiological growth factors and cytikines that are released upon the activation of blood platelets by thrombin. These growth factors, including PDGF, TGF-β 1, BMP, and VEGF have been shown to stimulate cell growth and differentiation with special clinical benefits for soft and bony tissue healing and regeneration. Platelet gels allow surgeons to manipulate the cellular environment of surgical sites and to guide tissue regeneration. A specific interest of such products is observed for the induction of osteogenesis and chondrogenesis. Advances in the preparation, clinical use, and safety of these two important classes of blood-derived biomaterials are reviewed.

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13

Yang, Nailin, Fei Gong, Yangkai Zhou, Qiao Yu, and Liang Cheng. "Liquid metals: Preparation, surface engineering, and biomedical applications." Coordination Chemistry Reviews 471 (November 2022): 214731. http://dx.doi.org/10.1016/j.ccr.2022.214731.

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14

Zubarev, Yu M., N. N. Solntsev, A. V. Weber, V. N. Vedenov, and V. A. Barsukov. "ENGINEERING OF DESIGN AND TECHNOLOGICAL PREPARATION OF PRODUCTION." Spravochnik. Inzhenernyi zhurnal, no. 297 (December 2021): 28–31. http://dx.doi.org/10.14489/hb.2021.12.pp.028-031.

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The article deals with issues related to ensuring the quality of products and their reliability, which is provided, starting from the preliminary design, design, modeling, production and disposal. Thus, the reliability of the product design is evaluated at all stages of its life cycle. Two main periods of the life cycle are considered – the development and modeling of new products, the second - its development, production and implementation. When mastering the production of new equipment, an important place is given to the formation and development of technologies that also have their own life cycle and affect the profit and competitiveness of the manufactured product.

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15

Costa, Vilma Conceição, Hermes Souza Costa, Wander Luiz Vasconcelos, Marivalda de Magalhães Pereira, Rodrigo Lambert Oréfice, and Herman Sander Mansur. "Preparation of hybrid biomaterials for bone tissue engineering." Materials Research 10, no. 1 (March 2007): 21–26. http://dx.doi.org/10.1590/s1516-14392007000100006.

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16

Lawson, D. "Vocational education as preparation for university engineering mathematics." Engineering Science & Education Journal 9, no. 2 (April 1, 2000): 89–92. http://dx.doi.org/10.1049/esej:20000206.

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17

Ejima, Hirotaka, Joseph J. Richardson, and Frank Caruso. "Phenolic film engineering for template-mediated microcapsule preparation." Polymer Journal 46, no. 8 (May 14, 2014): 452–59. http://dx.doi.org/10.1038/pj.2014.32.

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18

Badiru, Adedeji B., Jeremy M. Slagley, and David A. Smith. "Project Management Application for Engineering Program Accreditation Preparation." Journal of Professional Issues in Engineering Education and Practice 136, no. 1 (January 2010): 39–47. http://dx.doi.org/10.1061/(asce)ei.1943-5541.0000005.

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19

Bitay, Enikő, and Gyula Bagyinszki. "Educational Materials and Didactic Tools in Engineering Training Practices." Műszaki Tudományos Közlemények 15, no. 1 (October 1, 2021): 7–10. http://dx.doi.org/10.33894/mtk-2021.15.02.

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Анотація:

Abstract Educational materials are closely related to educational (didactic) tools, as they allow their preparation and presentation. The production of technical higher education (engineering training) materials or preparation can be approached from many perspectives. This article deals with some aspects of this.

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20

Peng, Haisheng, Xunpei Liu, Ran Wang, Feng Jia, Liang Dong, and Qun Wang. "Emerging nanostructured materials for musculoskeletal tissue engineering." J. Mater. Chem. B 2, no. 38 (2014): 6435–61. http://dx.doi.org/10.1039/c4tb00344f.

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21

Chang, Thomas Ming Swi. "PREPARATION*." Artificial Cells, Blood Substitutes, and Biotechnology 30, no. 5-6 (January 2002): 349–73. http://dx.doi.org/10.1081/bio-120016521.

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22

Klaffschenkel, R. A., A. Biesemeier, M. Waidmann, H. Northoff, W. Steurer, A. Königsrainer, and N. Lembert. "A Closed System for Islet Isolation and Purification Using the COBE2991 Cell Processor May Reduce the Need of Clean Room Facilities." Cell Transplantation 16, no. 6 (July 2007): 587–94. http://dx.doi.org/10.3727/000000007783465091.

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During the isolation of human islets of Langerhans the digest has repeated direct contact with the ambient atmosphere. In order to fulfill GMP requirements in clinical applications, the entire cell preparation must be performed in clean room facilities. We hypothesized that the use of a closed system, which avoids the direct exposure of tissue to the atmosphere, would significantly ease the preparation procedure. To avoid the direct atmosphere exposure we tested a modification of the isolation and purification process by performing all islet preparation steps in a closed system. In this study we compared the isolation outcome of the traditional open preparation technique with the new closed system. Pancreata from 6-month-old hybrid pigs were procured in the local slaughterhouse. After digestion/filtration the digest was cooled, collected, and concentrated in centrifugation containers and purified thereafter in the COBE2991 by top loading (control). In the control group 502 ± 253 IEQ per gram pancreas were purified. The total preparation time amounted to 12 h. In the closed system the digest was cooled and directly pumped into the COBE2991 for centrifugation followed by supernatant expelling. Bag filling, centrifugation, and expelling were repeated several times. Islets in pellet form were than purified by adding a gradient (bottom loading). Using this closed system 1098 ± 489 IEQ per gram pancreas were purified with a total cell viability of 67 ± 10% and a β-cell viability of 41 ± 13%. The total preparation time reduced to 6 h. After 24 h of cell culture the viability of β-cells was still 56 ± 10% and was only reduced after the addition of proapoptotic IL-1 and TNF-α to 40 ± 4%, indicating that freshly isolated islets are not apoptotic. In conclusion, the closed system preparation is much faster, more effective, and less expensive than the traditional islet preparation. The closed system may be applicable for human islets preparations to restrict the need of clean room facilities for islet preparations to a minimum and may open the way for islet preparations without clean room demand.

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23

Dong, Tunga Lag, Xue Yan Yun, Meng Ting Li, Ye Jin, and Yoshio Inoue. "Preparation and Characterization of Bio-Hydrogels for Biomedical Engineering." Advanced Materials Research 700 (May 2013): 276–79. http://dx.doi.org/10.4028/www.scientific.net/amr.700.276.

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In this work, a new crystalline PEO cross-linked CD films combining PEO and CDs (α-CD and β-CD) was prepared, and their compositions (CD/PEO; wt/wt) ranging from 1/99 to 6/94. The hydroxyl groups of PEO withMnof 20,000 were converted to chlorine groups through reaction with thionyl chloride. PEO cross-linked CD films with various compositions were successfully prepared via the epoxy-amine reaction between amino-CD and PEO-epoxy. The thermal and swelling behavior were studied for the PEO cross-linked CD films. It was found that the cross-linked PEO films form hydrogel in water, achieving a swelling ratio higher than 20 times of original weight. The swelling properties of these cross-linked films depend on the fraction of CDs. The crystallinity of these films was very high, and crystallization rate of PEO was accelerated by cross-linking with CDs.

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24

Dmitrievskiy, B. S., I. O. Savtsova, and A. E. Filina. "Model of Technical Preparation of Production in Mechanical Engineering." Vestnik Tambovskogo gosudarstvennogo tehnicheskogo universiteta 21, no. 1 (2015): 174–84. http://dx.doi.org/10.17277/vestnik.2015.01.pp.174-184.

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25

Xie, Yan, Naoki Kawazoe, Yingnan Yang, and Guoping Chen. "Preparation of mesh-like collagen scaffolds for tissue engineering." Materials Advances 3, no. 3 (2022): 1556–64. http://dx.doi.org/10.1039/d1ma01166a.

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Collagen meshes with large or small openings were prepared after selective removal of PLGA mesh from PLGA–collagen composite mesh or collagen-coated PLGA mesh. The collagen meshes support human skin fibroblast adhesion and promote cell proliferation.

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26

INOUE, Takahito, Katsunori TAKAHASHI, and Hiroshi YOKOYAMA. "Integrated Microfluidics for Chromosome Engineering-Preparation, Transportation and Manipulation." Archives of Histology and Cytology 65, no. 5 (2002): 465–71. http://dx.doi.org/10.1679/aohc.65.465.

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27

Weigel, Thomas, Gregor Schinkel, and Andreas Lendlein. "Design and preparation of polymeric scaffolds for tissue engineering." Expert Review of Medical Devices 3, no. 6 (November 2006): 835–51. http://dx.doi.org/10.1586/17434440.3.6.835.

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28

Hung, L. S., and C. W. Tang. "Interface engineering in preparation of organic surface-emitting diodes." Applied Physics Letters 74, no. 21 (May 24, 1999): 3209–11. http://dx.doi.org/10.1063/1.124107.

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29

Bölgen, Nimet, Fatima Plieva, Igor Yu Galaev, Bo Mattiasson, and Erhan Pişkin. "Cryogelation for preparation of novel biodegradable tissue-engineering scaffolds." Journal of Biomaterials Science, Polymer Edition 18, no. 9 (January 2007): 1165–79. http://dx.doi.org/10.1163/156856207781554064.

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30

Muthutantri, Anushini, Jie Huang, and Mohan Edirisinghe. "Novel preparation of graded porous structures for medical engineering." Journal of The Royal Society Interface 5, no. 29 (April 17, 2008): 1459–67. http://dx.doi.org/10.1098/rsif.2008.0092.

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The gradation of porosity in a biomaterial can be very useful for a variety of medical engineering applications such as filtration, bone replacement and implant development. However, the preparation of such structures is not a technologically trivial task and replication methods do not offer an easy solution. In this work, we elucidate the preparation of structures having a graded porosity by electrohydrodynamic spraying, using zirconia (ZrO 2 ), which is widely used in biomedical and other applications. The processes are generic and can be achieved using other bioactive ceramics with similar particle characteristics. The pores on the sprayed surface, the innermost surface and lengthwise cross sections have been analysed in addition to the change in depth of penetration as a function of spraying time. Control of porosity, pore size and depth of penetration has been obtained by varying parameters such as the spraying time, sintering temperature and the sacrificial template. It has been possible to obtain structures with interconnected pore networks of pore size greater than 100 μm as well as scattered pores smaller than 10 μm in size.

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31

Maeda, Hirotaka, Toshihiro Kasuga, Masayuki Nogami, and Minoru Ueda. "Preparation of bonelike apatite composite for tissue engineering scaffold." Science and Technology of Advanced Materials 6, no. 1 (January 2005): 48–53. http://dx.doi.org/10.1016/j.stam.2004.07.003.

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32

Barralet, J. E., L. Grover, T. Gaunt, A. J. Wright, and I. R. Gibson. "Preparation of macroporous calcium phosphate cement tissue engineering scaffold." Biomaterials 23, no. 15 (August 2002): 3063–72. http://dx.doi.org/10.1016/s0142-9612(01)00401-x.

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33

Hu, Shang-Hsiu, Ting-Yu Liu, Chia-Hui Tsai, and San-Yuan Chen. "Preparation and characterization of magnetic ferroscaffolds for tissue engineering." Journal of Magnetism and Magnetic Materials 310, no. 2 (March 2007): 2871–73. http://dx.doi.org/10.1016/j.jmmm.2006.11.081.

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34

Hansson, Annasara, Tiziana Di Francesco, Françoise Falson, Patricia Rousselle, Olivier Jordan, and Gerrit Borchard. "Preparation and evaluation of nanoparticles for directed tissue engineering." International Journal of Pharmaceutics 439, no. 1-2 (December 2012): 73–80. http://dx.doi.org/10.1016/j.ijpharm.2012.09.053.

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35

Hsieh, Chien-Yang, Sung-Pei Tsai, Da-Ming Wang, Yaw-Nan Chang та Hsyue-Jen Hsieh. "Preparation of γ-PGA/chitosan composite tissue engineering matrices". Biomaterials 26, № 28 (жовтень 2005): 5617–23. http://dx.doi.org/10.1016/j.biomaterials.2005.02.012.

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36

Krömker, M., K. D. Thoben, and A. Wickner. "An infrastructure to support concurrent engineering in bid preparation." Computers in Industry 33, no. 2-3 (September 1997): 201–8. http://dx.doi.org/10.1016/s0166-3615(97)00025-0.

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37

Chen, Guoping, Takashi Sato, Junzo Tanaka, and Tetsuya Tateishi. "Preparation of a biphasic scaffold for osteochondral tissue engineering." Materials Science and Engineering: C 26, no. 1 (January 2006): 118–23. http://dx.doi.org/10.1016/j.msec.2005.07.024.

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38

Min, Sang Ho, Hyeong Ho Jin, Hoy Yul Park, Ik Min Park, Hong Chae Park, and Seog Young Yoon. "Preparation of Porous Hydroxyapatite Scaffolds for Bone Tissue Engineering." Materials Science Forum 510-511 (March 2006): 754–57. http://dx.doi.org/10.4028/www.scientific.net/msf.510-511.754.

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Анотація:

Porous hydroxyapatite (HAp) scaffolds were successfully prepared by using the HAp slurry based on the replication of polymer sponge substrate. The effect of HAp content in slurry on the pore morphology and size, and density, porosity, and mechanical strength of porous scaffolds was investigated. The scaffolds with average pore sizes ranging from 200 to 400 µm had an open, relatively uniform, and interconnected porous structure. As the HAp content increased, the porosity of scaffold decreased while the density increased. These phenomena were attributed to the fact that the pores became interconnected with more dense and thicker pore walls with increasing HAp content in slurry. The results suggest that the density, porosity, and compressive strength of the porous HAp scaffold were significantly affected by the content of the HAp powder in the slurry.

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39

Bulavin, V. F., T. G. Bulavina, V. V. Yahrichev, A. S. Stepanov, and A. A. Frolov. "Digital support of production small business preparation in engineering." Journal of Physics: Conference Series 1399 (December 2019): 033045. http://dx.doi.org/10.1088/1742-6596/1399/3/033045.

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40

Ivanković, Marica, Hrvoje Ivanković, Maja Antunović, Anamarija Rogina, Antonia Ressler, and Leonard Bauer. "Preparation of 3D Porous Scaffolds for Bone Tissue Engineering." Kemija u industriji 68, no. 9-10 (2019): 457–68. http://dx.doi.org/10.15255/kui.2019.030.

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Анотація:

Inženjerstvo koštanog tkiva brzorastuće je polje istraživanja usmjereno na razvoj bioaktivnih 3D poroznih nosača, kao privremenih izvanstaničnih matrica, koji podržavaju prianjanje, umnažanje i diferencijaciju stanica te potiču stvaranje koštanog tkiva in vivo. Više od deset godina istraživanja naše grupe posvećena su razvoju novih materijala i postupaka za pripravu 3D poroznih nosača za inženjerstvo koštanog tkiva. Kao mogući nosači istraživani su porozni skeleti morskih organizama te kompozitni materijali i hidrogelovi na temelju biorazgradljivih polimera i bioresorbirajuće hidroksiapatitne keramike. U ovom radu dan je prikaz naših istraživanja i glavnih postignuća, objavljenih u međunarodnim znanstvenim publikacijama.

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41

Frontini, Patricia M., Marta Rink, and Andrea Pavan. "Development of polyurethane engineering thermoplastics. I. Preparation and structure." Journal of Applied Polymer Science 48, no. 11 (June 15, 1993): 2003–22. http://dx.doi.org/10.1002/app.1993.070481114.

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42

Hu, Liming, and Minheng Chen. "Preparation of ultrafine powder: the frontiers of chemical engineering." Materials Chemistry and Physics 43, no. 3 (March 1996): 212–19. http://dx.doi.org/10.1016/0254-0584(95)01640-g.

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43

Ghomi, H., M. H. Fathi, and H. Edris. "Preparation of nanostructure hydroxyapatite scaffold for tissue engineering applications." Journal of Sol-Gel Science and Technology 58, no. 3 (March 8, 2011): 642–50. http://dx.doi.org/10.1007/s10971-011-2439-2.

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44

Efanov, M. V., and P. P. Chernenko. "Preparation of nitrogen-containing humic preparations from peat." Solid Fuel Chemistry 44, no. 1 (February 2010): 61–64. http://dx.doi.org/10.3103/s036152191001012x.

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45

Kong, Dequan, Rong Wan, and Yonghui Wang. "Sample Preparation Methods Affect Engineering Characteristic Tests of Municipal Solid Waste." Advances in Civil Engineering 2020 (June 26, 2020): 1–13. http://dx.doi.org/10.1155/2020/9280561.

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Анотація:

The output of municipal solid waste (MSW) has sharply increased over the recent years, which induces many severe problems (environmental pollution, deteriorating human health, and increased land occupation). Engineering parameters form the research basis for MSW treatment, which can be greatly influenced by the applied sample preparation methods. Currently, the preparation method of MSW samples mostly refers to the geotechnical test standard. The suitability and accuracy of this method for MSW are less studied, especially when considering biodegradation, so further research is needed. Depending on whether the material is dried or remains wet during preparation, the samples made by traditional geotechnical test standards are referred to as dry method samples or wet method samples, respectively. To study the influence of the sample preparation methods on the MSW engineering properties of MSW, the compression tests, direct shear tests, and biodegradation compression tests were conducted for both types of samples (dry and wet). The results show that the data dispersion of the wet method samples is stronger. The average test data variance of wet samples was 1.43–8.85 times higher than that of dry samples. In both the direct shear test and the compression test, the differences in engineering parameters caused by the sample preparation method were less than 12.3% and 8.9%, respectively. In biodegradation compression tests, the difference in engineering parameters reached up to 33.7%. In general, the dry method is preferred for tests that do not consider biodegradation, while the wet method is more suitable for tests that consider biodegradation. The research can be used as a reference toward improving the simplicity and accuracy of MSW tests.

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Wang, Xue Jun, Tao Lou, Zhen Yang, and Kun Peng He. "Preparation and Characterization of Porous PLGA Scaffold for Tissue Engineering." Advanced Materials Research 898 (February 2014): 322–25. http://dx.doi.org/10.4028/www.scientific.net/amr.898.322.

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Scaffold plays an important role in tissue engineering. In this study, porous PLGA scaffold was successfully prepared by mixed solvent systems using the thermally induced phase separation method. The PLGA scaffold shows fibrous matrix and interconnective pores, and the scaffold has high porosity and compressive modulus with dioxane/THF solvent system, which could be a very promising scaffold for tissue engineering.

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47

Verma, Sunil Kumar, Anjali ., Diksha Dubey, and Rishi Kumar Verma. "Recent advancements in Skin tissue engineering in the application of Nanotechnology." Research Journal of Biotechnology 18, no. 2 (January 15, 2023): 127–36. http://dx.doi.org/10.25303/1802rjbt1270136.

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Skin tissue engineering's principal purpose is to facilitate the rapid establishment of a construct which will support and aid the entire functional skin regeneration with all the skin appendages and innumerable layers i.e. epidermis, dermis, fatty subcutaneous with altogether effective operational and scar-free assimilation of nerve network and vascular system to the host tissue. The development in skin tissue engineering research is in such a way that the use of biomaterials and nanotechnology for tissue engineering applications has increased day by day and it is foreseen that additional innovative skin tissue biomaterials using nanotechnology are imminent. Now, in skin tissue engineering, the success is reliant on the skillful surgical procedures along with wound bed preparation and so anticipation is that in coming times, expertise will not be dependent on these limiting factors, but on increasing rate of recovery and tissue replacements.

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Czerwińska-Lubszczyk, Agnieszka, Michalene Grebski, and Dominika Jagoda-Sobalak. "Competencies of Graduates – An Industry Expectation." Management Systems in Production Engineering 30, no. 2 (May 19, 2022): 172–78. http://dx.doi.org/10.2478/mspe-2022-0021.

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Abstract Changes in the environment of industry may affect the expectations related to the competencies of the employees. Changes to the education system and curricula may be required. The main purpose of this research paper was to analyze the expectations of the industries related to competencies of graduates of engineering programs. The paper presents preliminary research. The survey was conducted at twenty-eight companies within the area of technical university in Poland. Based on the survey, data was collected related to the level of preparation of engineering graduates as well as the industry expectations related to the preparation of engineering graduates. This was done for the purpose of determining the gap between industry expectations and the level of preparation of the engineering graduates. Enterprises expect a wide range of competences from engineering graduates. The most important areas of competence included soft competences and practical knowledge and skills. The biggest gap between industry expectation and graduate’s preparation are the soft skills. Recommendations were suggested which would be incorporated in the engineering curriculum for the purpose of continuous quality improvement.

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McInnes, Adam D., Michael A. J. Moser, and Xiongbiao Chen. "Preparation and Use of Decellularized Extracellular Matrix for Tissue Engineering." Journal of Functional Biomaterials 13, no. 4 (November 14, 2022): 240. http://dx.doi.org/10.3390/jfb13040240.

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The multidisciplinary fields of tissue engineering and regenerative medicine have the potential to revolutionize the practise of medicine through the abilities to repair, regenerate, or replace tissues and organs with functional engineered constructs. To this end, tissue engineering combines scaffolding materials with cells and biologically active molecules into constructs with the appropriate structures and properties for tissue/organ regeneration, where scaffolding materials and biomolecules are the keys to mimic the native extracellular matrix (ECM). For this, one emerging way is to decellularize the native ECM into the materials suitable for, directly or in combination with other materials, creating functional constructs. Over the past decade, decellularized ECM (or dECM) has greatly facilitated the advance of tissue engineering and regenerative medicine, while being challenged in many ways. This article reviews the recent development of dECM for tissue engineering and regenerative medicine, with a focus on the preparation of dECM along with its influence on cell culture, the modification of dECM for use as a scaffolding material, and the novel techniques and emerging trends in processing dECM into functional constructs. We highlight the success of dECM and constructs in the in vitro, in vivo, and clinical applications and further identify the key issues and challenges involved, along with a discussion of future research directions.

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Agnihotri, Nitika, Ravinesh Mishra, Chirag Goda, and Manu Arora. "Microencapsulation – A Novel Approach in Drug Delivery: A Review." Indo Global Journal of Pharmaceutical Sciences 02, no. 01 (2012): 01–20. http://dx.doi.org/10.35652/igjps.2012.01.

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The review of Microencapsulation is a well-established dedicated to the preparation, properties and uses of individually encapsulated novel small particles, as well as significant improvements to tried-and-tested techniques relevant to micro and nano particles and their use in a wide variety of industrial, engineering, pharmaceutical, biotechnology and research applications. Its scope extends beyond conventional microcapsules to all other small particulate systems such as self-assembling structures that involve preparative manipulation. The review covers encapsulation materials, physics of release through the capsule wall and / or desorption from carrier, techniques of preparation, many uses to which microcapsules are put.© 2011 IGJPS. All rights reserved.

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