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Artykuły w czasopismach na temat „Cutting out prepreg”

Autor: Grafiati

Data publikacji: 3 czerwca 2025

Data aktualizacji: 31 lipca 2025

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1

Zem, Luciele Milani, Katia Christina Zuffellato-Ribas, Maria Izabel Radomski, and Henrique Soares Koehler. "Rooting of semihardwood cuttings of cataia collected in four seasons." Ciência Rural 45, no. 10 (2015): 1815–18. http://dx.doi.org/10.1590/0103-8478cr20140534.

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Drymis brasiliensis Miers is a specie of the Winteraceae family, commonly known as cataia or pepper bark. This research was carried out with the aim to study the rooting of semihardwood cuttings, subjected to different concentrations of indolebutyric acid (IBA), collected in four seasons of the year (autumn, winter, spring and summer). Cuttings were prepared with 10-12cm length, keeping two halved leaves. Bases of cuttings were treated as follows: control (100% water), 0; 500; 1500; 3000; 4500 and 6000mg L-1 IBA.One hundred and twenty after the planting the following variables were assessed: r

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Mireski, Maria Cecília, Manoela Mendes Duarte, Carlos André Stuepp, and Ivar Wendling. "ROOTING OF Ficus enormis MINI-CUTTINGS WITH DIFFERENT LENGTHS." FLORESTA 49, no. 4 (2019): 615. http://dx.doi.org/10.5380/rf.v49i4.54317.

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Ficus enormis is a native species with great ecological potential, especially for ecosystems restoration. The present study aimed to evaluate the rooting, root and vegetative vigor of Ficus enormis mini-cuttings and to determine its best length for the formation of seedlings. Mini-cuttings were collected from clonal mini-garden, prepared with 2 ± 0.2 cm, 4 ± 0.2 cm, 6 ± 0.2 cm, 8 ± 0.2 cm and 10 ± 0.2 cm of length and diameter of 0.5 ± 0.2 cm. The planting was carried out in plastic boxes filled with commercial substrate based on carbonized rice hulls and coconut fiber, conditioned in a greenh

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Afaq Majid Wani, Pavani Ramavath, and M. Shiva Kumar. "To Study the Effect of Auxin Concentrations (IBA and IAA) on Growth Performance of Stem Cutting of Hardwickia binata (Roxb.)." International Journal of Current Microbiology and Applied Sciences 10, no. 11 (2021): 243–49. http://dx.doi.org/10.20546/ijcmas.2021.1011.028.

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The present studies on “Effect of Plant Growth Regulators on Growth Performance of Stem Cutting of Hardwickia binata Roxb” was carried out in the mist chamber of Institute of Forest Biodiversity, Dulapally, Kompally, Hyderabad, during January- April, 2021. The cuttings of Hardwickia binata Roxb were prepared from selected superior phenotypes from the surrounding environments of Kompally, Hyderabad. Hardwickia binata Roxb. is difficult to root and need auxin treatment and controlled environment to successful survival and rooting. The cuttings were treated with 0, 200, 500,1000, 1500, 2000 mg/l

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Kumarasinghe, P. D. G. I. H., W. R. S. Jayawardhana, and K. M. C. Fernando. "Effect of Epidermal Mucous Secretion of Earthworms and other Selected Organic Substances on Rooting of Semi-Hardwood Cuttings of <em>Citrus aurantifolia</em> and Top Cuttings of <em>Dracaena sanderiana</em>." Tropical Agricultural Research and Extension 27, no. 2 (2024): 77–86. http://dx.doi.org/10.4038/tare.v27i2.5700.

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A recent trend in plant growth and propagation is to use natural substances rather than synthetic plant growth regulators. Two experiments were conducted to find out the effect of epidermal mucous secretion (EMS) of earthworms and other organic substances including Aloe vera gel, coconut water and ripe banana on rooting of semi-hardwood cuttings of Citrus aurantifolia and top cuttings of Dracaena sanderiana compared to commercially available plant growth regulators (PGRs). Eleven treatments were prepared using sole application of EMS solution, Aloe vera gel, coconut water and ripe banana, and

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Szczepaniak, Stanisława, Zdzisław Guzikowski, and Monika Henschke. "Assessment of the usefulness of selected media used in the rooting process of lavender cotton shoot cuttings." Folia Horticulturae 28, no. 2 (2016): 195–200. http://dx.doi.org/10.1515/fhort-2016-0023.

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Abstract Lavender cotton (Santolina chamaecyparissus L.) shoot cuttings, obtained from two-year-old mother plants, were rooted in five different media under an unheated foil tunnel. Two ready-made and widely recommended media were used: Hartmann peat substrate and Ceres peat-coconut substrate, as well as three prepared mixtures: high peat + mineral soil, high peat + perlite and high peat + sand. The influence of medium type on the number of rooted cuttings and the quality of the root system was assessed for two cultivation times during a three-year study after eight weeks from the date of cutt

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Kiseleva, Elena N., Maksim A. Rachenko, Irina М. Mokshonova, and Anna M. Rachenko. "Rooting of the Cuttings of Coniferous Species of Dendroflora of the Baikal Region." Lesnoy Zhurnal (Forestry Journal), no. 5 (October 18, 2024): 27–39. http://dx.doi.org/10.37482/0536-1036-2024-5-27-39.

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The active development of production has a negative impact on the environment. Millions of cubic meters of forest are cut down annualy for production needs. These volumes need to be restored. Therefore, research in the field of reforestation is relevant and important. The aim of this study has been to evaluate the technology of rooting coniferous trees during summer grafting. Various terms of green cuttings of coniferous trees of the Pinaceae family were considered, common representatives in the region (Pinus sylvestris L., Picea obovata Ledeb., Picea obovata var. coerulea Malyschev, Pinus sib

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7

İşbilir, Mehmet Emin, Onur Saraçoğlu, Emircan Dinçer, Alperen Donat, and Ala Asi Mohammed Al-Salihi. "Paclobutrazol Uygulamalarının Karadut (Morus nigra L.) Odun Çeliklerinin Köklenme Performansı Üzerine Etkileri." Turkish Journal of Agriculture - Food Science and Technology 10, sp1 (2022): 2722–24. http://dx.doi.org/10.24925/turjaf.v10isp1.2722-2724.5682.

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Cutting reproduction is the cheapest and most practical method for plants capable of clonal regeneration. However, the difficulties in adventitious root formation in black mulberry cuttings create a disadvantage for mulberry growers. This study aimed to investigate the effect of IBA and Paclobutrazol applications on the rooting ability of black mulberry hardwood cuttings. The experiment was carried out in the polyethylene greenhouse of Tokat Gaziosmanpaşa University Agricultural Research and Application Center in February 2022. As a material, hardwood cuttings prepared from one-year-old branch

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8

ZHANG, ER-GENG, QIANG CHEN, QIN-XUE WANG, and BIAO HUANG. "PROPERTIES AND CUTTING PERFORMANCE OF TiAlSiN COATING PREPARED BY CATHODE ARC ION PLATING." Surface Review and Letters 23, no. 06 (2016): 1650055. http://dx.doi.org/10.1142/s0218625x16500554.

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TiAlSiN coating was deposited on high-speed steel (HSS) samples and cemented carbide tool inserts, respectively, by a new coating preparation procedure, and its properties and cutting performance were characterized. The coating thickness, chemical composition, microstructure morphology and mechanical properties were investigated by X-ray fluorescence measurement system, energy dispersive spectrometer (EDS), scanning electron microscope (SEM), nanoindentation, Rockwell hardness tester and ball-on-disc tribometer. A 3D orthogonal cutting experiment model was established by DEFORM-3D to study the

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9

Omar, Taha Jalal, and Sargul Ahmed Khudhur. "Effect of NAA and IAA on Stem Cuttings of Dalbergia Sissoo (Roxb)." Journal of Biology and Life Science 6, no. 2 (2015): 208. http://dx.doi.org/10.5296/jbls.v6i2.7445.

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The plant cuttings is one of the most common methods of vegetative reproduction which is, today, used extensively due to low cost. In order to study the effect of various concentrations of Naphthalene acetic acid (NAA) and Indole acetic acid (IAA) on the rooting of semi- hardwood cuttings of Dalbergia sissoo , an experiment was carried out in a private field in Koya city in 2014. In this research, the treatments were prepared to include hormone of Naphthalene acetic acid in four levels of: (0, 100, 300 and 500 ppm) and Indole acetic acid in four levels of: (0, 100, 300 and 500 ppm), and the bo

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10

Vopát, Tomáš, Martin Sahul, Marián Haršáni, Ondřej Vortel, and Tomáš Zlámal. "The Tool Life and Coating-Substrate Adhesion of AlCrSiN-Coated Carbide Cutting Tools Prepared by LARC with Respect to the Edge Preparation and Surface Finishing." Micromachines 11, no. 2 (2020): 166. http://dx.doi.org/10.3390/mi11020166.

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Nanocomposite AlCrSiN hard coatings were deposited on the cemented carbide substrates with a negative substrate bias voltage within the range of −80 to −120 V using the cathodic arc evaporation system. The effect of variation in the bias voltage on the coating-substrate adhesion and nanohardness was investigated. It was clear that if bias voltage increased, nanohardness increased in the range from −80 V to −120 V. The coating deposited at the bias voltage of −120 V had the highest nanohardness (37.7 ± 1.5 GPa). The samples were prepared by brushing and wet microblasting to finish a surface and

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11

Zhao, Yan, Yan Zhang, and Ri Ping Liu. "MD Simulation of Chip Formation in Nanometric Cutting of Metallic Glass." Advanced Materials Research 476-478 (February 2012): 434–37. http://dx.doi.org/10.4028/www.scientific.net/amr.476-478.434.

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Great prospect in ultra precision leads to the urgent requirement for the research on the nanometric machining of metallic glass (MG). Molecular dynamics simulation is carried out to find out the nanometric cutting mechanisms of MG. The MG workpiece, Cu50Zr50, is prepared using fast cooling simulation in isothermal-isobaric ensemble. Interactions of Cu and Zr atoms are described by Finnis-Sinclair potential. Morse potential is adopted for the interaction between the carbon atom in the diamond tool and the metal atom in the workpiece. Simulation results show that, different from cutting crystal

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12

Ren, Ling Hui, Kai Liu, Hai Yan Zhang, and He Ping Hou. "Cutting Software Development Based on JDF Digital Workflow." Advanced Materials Research 174 (December 2010): 307–10. http://dx.doi.org/10.4028/www.scientific.net/amr.174.307.

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JDF is the XML-based format for the job descripting and exchanging. Through the Parse of JDF document’s grammar and data structure, we have got the information of layout. Combined with technical features of cutting papers and experiences of artificial processing paths, this article have to analyze the characteristics of irregular layout, then put out a new complex algorithm of cutting path and solve the planning of irregular layout cutting path. Development a optimization software of paper cutter. The cutting software based on JDF digital workflow, can obtain layout information directly from t

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13

Luan, Ya Ning, Xiang Yang Sun, Su Yan Li, Hui Wang, and Cheng Guo. "Composts from Green Waste as Peat Substitutes for Cutting Propagation of Impatiens hawkeri." Advanced Materials Research 113-116 (June 2010): 2314–18. http://dx.doi.org/10.4028/www.scientific.net/amr.113-116.2314.

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This study was to evaluate the use of green waste compost (GWC) as a growth media for rooting of Impatiens hawkeri. The experiments were divided into two sections. In the first experiment, GWC samples were collected periodically during a 60-d rapid composting period from a single windrow. A germination test was carried out previously in order to evaluate the phytotoxicity presence of GWC using Lepidium sativum L. (cress) as an indicator. Subsequently, five growth media were prepared containing 100%, 75%, 50% and 25% by volume of GWC with the corresponding peat as diluents, plus an untreated co

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14

Suresh, S., N. Sateesh, Ramsubbiah, B. Ch Nookaraju, D. Sivanagaraju, and A. Anitha Lakshmi. "Performance Evaluation of MQL with Graphene Mixed Nano Fluids prepared at different Concentrations in Turning of Pure Titanium (TI6Al4V) Alloy." E3S Web of Conferences 309 (2021): 01041. http://dx.doi.org/10.1051/e3sconf/202130901041.

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This paper presents an investigation into the minimum quantity lubrication mode with Nano fluid during turning of titanium (TI6AL4V) alloy. In heavy cutting conditions, minimum quantity lubrication (MQL) has been observed, that, Nano-cutting fluids which have enrich thermal conductivity than base fluid, are begun to be used in MQL system. The addition of the required nano particle ratio to the base liquid is one of the most important issues that arise in this method. Therefore, this study aimed to find the optimum distribution rate of graphene nano particles having excellent properties and mac

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15

Hendrayana, Yayan, Ilham Adhya, Toto Supartono, et al. "Pelatihan Pembuatan Bibit Stek Batang Kiara Karasak (Ficus Kurzii King) untuk Rehabilitasi di Desa Cimara Kecamatan Cibeureum, Kuningan." Empowerment 8, no. 01 (2025): 23–31. https://doi.org/10.25134/empowerment.v8i01.10887.

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Cimara Village, Cibeureum District, Kuningan Regency, faces the problem of critical land which is at risk of environmental degradation due to erosion and reduced natural vegetation. This condition threatens soil fertility and reduces ecosystem function in maintaining environmental balance. One step that can be taken to restore this condition is land rehabilitation using local plants such as kiara karasak (Ficus kurzii King), which has high adaptability to the local environment and plays an important role in preventing soil erosion. The aim of this service is to provide training to the communit

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16

Ovcharenko, V. E., Yuriy F. Ivanov, A. A. Mohovikov, A. S. Ignatyev, Yu Baohai, and Hong Wei Zhang. "Formation of Nano-Sized Structural-Phase States in Surface Layers of a Cermet Alloy and the Influence of the States on the Tool Life of Cermet Plates in Metal Cutting." Applied Mechanics and Materials 770 (June 2015): 144–50. http://dx.doi.org/10.4028/www.scientific.net/amm.770.144.

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A comparative analysis of the surface-layer microstructure of a tungsten-based cermet alloy modified with pulsed high-energy electron beams generated by gas-discharge plasmas and of the tool life of metal-cutting plates prepared from this alloy is performed. The choice of a plasma-forming gas providing for the emission of electrons out of the plasma-filled cathode is shown to have a profound influence both on the formation process of nanosized structural-phase states in the surface layer of the cermet alloy and on the tool life of the metal-cutting plates prepared from this alloy.

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17

Cheng, Jian Bing, Si Qin Pang, Xi Bin Wang, and Qi Xun Yu. "Effect of Grain Growth Inhibitor on the Wear of Ultrafine Cemented Carbide Cutting Inserts." Applied Mechanics and Materials 423-426 (September 2013): 720–24. http://dx.doi.org/10.4028/www.scientific.net/amm.423-426.720.

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By using the method of low pressure sintering, both of adding and not adding grain growth inhibitor of WC-Co ultra-fine cemented carbide cutting inserts were prepared, tool life tests of continuous cutting superalloy GH2132 were carried out, respectively. ZEISS continuous zoom stereo microscope and microphotograph system were used to observe flank surface wear morphology of the cutting inserts, and analysis the topography and elements of central wear region of flank surface by X-ray energy dispersive spectrometry and scanning electron microscope. The results show that the main wear mechanism o

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18

Gordon, S., and M. T. Hillery. "A review of the cutting of composite materials." Proceedings of the Institution of Mechanical Engineers, Part L: Journal of Materials: Design and Applications 217, no. 1 (2003): 35–45. http://dx.doi.org/10.1177/146442070321700105.

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The increased use of composite materials has led to an increase in demand for facilities to machine them. There are significant differences between the machining of metals and alloys and that of composite materials, because composites are anisotropic, inhomogeneous and are mostly prepared in laminate form before undergoing the machining process. In most cases, traditional metal cutting tools and techniques are still being used. While the process of metal cutting has been well researched over the years, relatively little research has been carried out on the cutting of composite materials. This

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Ilori, Olutosin Olufisayo, Dare A. Adetan, and Lasisi E. Umoru. "Effect of Cutting Parameters on the Surface Residual Stress of Face-Milled Pearlitic Ductile Iron." International Journal of Materials Forming and Machining Processes 4, no. 1 (2017): 38–52. http://dx.doi.org/10.4018/ijmfmp.2017010103.

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The study determined the effect of cutting parameters on the surface residual stress of face-milled pearlitic ductile iron with a view to enhancing surface integrity of machined parts in the manufacturing industries. The pearlitic ductile iron used for this study was prepared and four cutting parameters were considered. The results obtained showed that the average surface residual stress of the machined surfaces was tensile and increased significantly with increase in depth of cut. Feed rate and cutting speed exhibited some effect, though not statistically significant, on average surface resid

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20

Łatka, L., E. Jonda, and T. Kiełczawa. "The influence of the laser cutting process parameters on the quality of the cut edge." Journal of Physics: Conference Series 2676, no. 1 (2023): 012001. http://dx.doi.org/10.1088/1742-6596/2676/1/012001.

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Abstract The article describes the influence of the parameters of laser cutting on the cut edge quality of 10 mm S355J2 structural steel. The cutting process was carried out with a fiber laser. The basic evaluation criteria were measurements of perpendicularity tolerance, average profile height of roughness Rz5, visual evaluation, and measurements of hardness HV10. Moreover, the factorial regression models were prepared to investigate the standardized effects of the process parameters on the cutting quality. The variable process parameters were laser beam power, cutting velocity and working ga

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21

Madhavan, V., S. Chandrasekar, and T. N. Farris. "Direct Observations of the Chip-Tool Interface in the Low Speed Cutting of Pure Metals." Journal of Tribology 124, no. 3 (2002): 617–26. http://dx.doi.org/10.1115/1.1398546.

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An experimental study of the chip-tool interface and its evolution in the low speed cutting of metals has been carried out. Specially prepared transparent glass and sapphire tools have been used to cut commercially pure metals such as lead, aluminum and copper. The chip-tool interface has been observed in situ using optical microscopy and recorded on film and video tape. By observing the motion of inhomogeneities in the chip, and profilometry of the chip and tool surfaces, it has been established that there is intimate sliding contact between the chip and the tool at and near the cutting edge.

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Usca, Üsame Ali. "The Effect of Cellulose Nanocrystal-Based Nanofluid on Milling Performance: An Investigation of Dillimax 690T." Polymers 15, no. 23 (2023): 4521. http://dx.doi.org/10.3390/polym15234521.

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Machining high-strength structural steels often requires challenging processes. It is essential to improve the machinability of such materials, which are frequently needed in industrial manufacturing areas. Recently, it has become necessary to enhance the machinability of such materials using different nanopowders. In this study, different cooling/lubricating (C/L) liquids were prepared with cellulose nanocrystal (CNC) nanopowder. The aim was to improve the machinability properties of Dillimax 690T material with the prepared CNC-based cutting fluids. CNC nanopowders were added to 0.5% distille

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Monka, Peter Pavol, Katarina Monkova, Martin Vasina, Milena Kubisova, Martin Korol, and Adriana Sekerakova. "Effect of Machining Conditions on Temperature and Vickers Microhardness of Chips during Planing." Metals 12, no. 10 (2022): 1605. http://dx.doi.org/10.3390/met12101605.

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For the machining of long and narrow surfaces and when processing multiple pieces, planing technology is used, the productivity of which can be higher than that of milling, although it is relatively slow machining. The article aims to study the degree of influence of the geometry of the tool (the angle of cutting-edge inclination and the angle of the tool-orthogonal rake), as well as the cutting conditions (cutting depth and cutting speed) on the chip characteristics (temperature and microhardness) in orthogonal and oblique slow-rate machining of steel 1.0503 (EN C45). The experiments were car

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Imada, Takumi, Keiji Ogawa, Haruki Kino, Heisaburo Nakagawa, and Hitomi Kojima. "Experimental Investigations on Cutting Phenomena in Shoulder Cutting of Hardened Die Steel with Small Diameter End Mill: Effects of Left Hand Helical Tool." International Journal of Automation Technology 14, no. 1 (2020): 26–37. http://dx.doi.org/10.20965/ijat.2020.p0026.

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This study deals with shoulder cutting phenomena in micro-end-milling of hardened die steel. Demand for micro-end-milling for products in the medical, optical, and electronics industry is increasing. However, in machining with a small diameter end mill that has diameter of e.g., 0.5 mm, the rigidity of the tool itself is low; therefore, cutting conditions must be set to low values to achieve stable machining. We revealed that cutting phenomena became unstable because the end cutting edge was damaged early in shoulder cutting. Therefore, we experimentally prepared a left hand helical tool with

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Li, Ming, Yue Yang, and Hui Chen. "Effect of WC Grain Size on the Abrasive Wear Resistance of HVOF Spraying WC-Co Coatings." Advanced Materials Research 97-101 (March 2010): 1344–47. http://dx.doi.org/10.4028/www.scientific.net/amr.97-101.1344.

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Three different WC grain size powder were used to prepare WC-Co coatings employing HVOF technique. The effect of WC grain size on the abrasive wear resistance and failure mechanism were analyzed. The results show that the abrasive wear resistance increases with the decrease of WC grain size. Nanostructured coating is high in surface plasticity. It can only be pressed out of prints, the opportunity of cutting is small. Micro-cutting wear dominates the main abrasive wear mechanism of nanostructured coating.

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Mikolajczyk, Tadeusz, Tomasz Paczkowski, Mustafa Kuntoglu, Abhishek D. Patange, and Rüstem Binali. "Research on Using an Unconventional Tool for Increasing Tool Life by Selective Exchange of Worn Cutting Edge." Applied Sciences 13, no. 1 (2022): 460. http://dx.doi.org/10.3390/app13010460.

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This paper proposes a novel scheme titled ‘selective exchange of the worn cutting edge (SEWCE),’ which uses the cutting edge for an extended time by replacing the worn-out edge. This possibility was investigated for single-edge cutting tools for several operations, such as oblique and orthogonal cutting. The unique design of the turning tool incorporating cylindrical inserts was developed, thereby providing new machining possibilities compared to marketed solutions for round inserts. The prototype tool was prepared for the demonstration by using a cylinder with radius rε = 1.5 mm. A detailed a

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Milyukova, Olga Yurievna. "Parallel implementation of the conjugate gradient method with the IC1 preconditioner based on the use of grid node reordering." Keldysh Institute Preprints, no. 61 (2023): 1–28. http://dx.doi.org/10.20948/prepr-2023-61.

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The paper proposes a method for using MPI+OpenMP technology for constructing and inverting a first-order incomplete triangular Cholesky expansion preconditioner IC1(τ) for solving system of linear algebraic equations with an arbitrary symmetric positive definite matrix on a small number of processors. Methods of using MPI and MPI+OpenMP technologies are based on the use of grid node orderings consistent with the division of the calculation area. When constructing the preconditioning matrix IC1(τ) using MPI, cutting is performed at positions in some of its rows. The use of OpenMP technology in

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Xu, Lingfeng, Mingxiang Li, Zhanhua Song, Fade Li, Jing Guo, and Ming Gao. "WC-High Entropy Alloy Reinforced Long Life Self-Grinding Silage Knife Prepared by Laser Cladding." Nanomaterials 12, no. 6 (2022): 1013. http://dx.doi.org/10.3390/nano12061013.

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The working environment of agricultural knives is bad, which makes the knives wear out easily. A wear resistant layer of AlCoCrFeNi high entropy alloy (HEA) reinforced by tungsten carbide (WC) was prepared by laser cladding on one side of the cutting edge of a 65 Mn silage knife. Both the effects of WC addition on the microstructure and mechanical properties of AlCoCrFeNi (WC)x (x = 0, 0.1, 0.2 and 0.3 in mass percentage) alloys were investigated. All experimental alloys displayed a crystalline structure of simple body centered cubic (BCC). The hardness of the cladding layer increases with the

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Deng, Zhao Hui, Zhan Pan, Qiao Ping Wu, G. F. Zhang, and B. Zhang. "Research on Finite Element Simulation and Experiment of Temperature Field in Surface Cutting Used a New PDC Cutter." Key Engineering Materials 487 (July 2011): 366–70. http://dx.doi.org/10.4028/www.scientific.net/kem.487.366.

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A new polycrystalline diamond compacts (PDC) cutter was designed and prepared. The new PDC cutter has fibers that are artificially ordered so as to have the desired geometric angles, and it has a larger number of the cutting edges, enough space for holding chips and interrupted cutting so that it is easier to release heat. According to machining properties of materials and working conditions, on the basis of the theory of thermal equilibrium of moving thermal source, the paper established the mathematical model of temperature field of interrupted cutting used the PDC cutter through reasonable

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Muhammad Adib Ibrohim and Agus Hariyono. "Pengaruh Variasi Kecepatan Putar dan Sudut Kemiringan Poros Pisau Terhadap Kualitas Hasil Pemotongan pada Mesin Pemotong Daun Bibit Bawang Merah." Jurnal Penelitian Rumpun Ilmu Teknik 3, no. 3 (2024): 175–86. http://dx.doi.org/10.55606/juprit.v3i3.4247.

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In processing agricultural products, various machining equipment is often used. One kind of machine which is being used for the processing of agricultural crop is a shallot leaf cutting machine, used to prepare seeds ready for replanting. However, this process often results in imperfect cuts, leaving leaves that are too long, this condition can slow down the growth of the shallot seedlings. This research aims to determine the effect of rotational speed and inclination angle of the cutting knife shaft in achieving optimal quality of the size of the cutting residue. The data collection method wa

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Panda, Anton, Ján Duplák, Miroslav Kormoš, and Slavko Jurko. "Bearing Rings Turning and the Impact of this Process for Resulting Durability of Selected Cutting Materials Durability." Key Engineering Materials 669 (October 2015): 278–85. http://dx.doi.org/10.4028/www.scientific.net/kem.669.278.

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Essential factors of each new discovery or piece of knowledge in science are predetermined, prepared and realized experiment. Every successfully realized experiment with obtained outputs and measurements indicates the gauge of asset that has been achieved by its execution. After analyzing of outputs final dependencies can be described that generalize whole experiment and allow entire process to be analytically identified. The production of bearings is very difficult process. Especially production of bearing rings is very complicated. Optimization of this process means significant savings for t

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Ekincioglu, Gokhan, Timucin Emre Tabaru, Sekip Esat Hayber, and Rasit Altindag. "Experimental analysis of the correlation between ultrasonic velocity and metallographic and cutting performance parameters of boron carbide-doped diamond sockets." Matériaux & Techniques 108, no. 4 (2020): 403. http://dx.doi.org/10.1051/mattech/2020033.

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The natural stone cutting process is carried out by cutting tools called diamond socket (DS) consisting of two parts diamond and matrix. DS performance in rock cutting highly depends on the production cost of the socket, cutting precision, and energy costs. However, DS performance can be demonstrated after the circular saw with DS is connected to the cutting machine and performs the cutting operation. This trial and error method causes negative effects such as time loss, an increase in labor costs, and disruption in production for natural stone processing plants. For this reason, ultrasonic ve

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Lü, Zhi Jie, Ming Feng Ding, and Jun Zhao. "Wear Mechanism of Si₃N₄/TiC Micro-Nano-Composite Ceramic Tool in Dry Machining of Nodular Cast Iron." Applied Mechanics and Materials 319 (May 2013): 79–83. http://dx.doi.org/10.4028/www.scientific.net/amm.319.79.

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In this paper, a type of Si3N4/TiC micro-nano-composite ceramic tool materials were fabricated via hot pressing technique by adding Si3N4 and TiC nanoparticles and with Al2O3 and Y2O3 as additives. Tool wear in dry machining of nodular cast iron with Si3N4/TiC micro-nano-composite ceramic tool were investigated, in comparison with a commercial Sialon ceramic tool. For determination of the wear resistance, the workpiece which is prepared to be used in the experiment, 400 mm in length and 120 mm in diameter, is machined in lathe. Turning experiments were carried out at three different cutting sp

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Milyukova, Olga Yurievna. "Combination of numerical and structural approaches in the parallel first-order incomplete triangular decomposition preconditioning method." Keldysh Institute Preprints, no. 75 (2024): 1–28. https://doi.org/10.20948/prepr-2024-75.

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A parallel version of the method of incomplete triangular Cholesky decomposition of the first order of conjugate gradients is considered, which uses a reordering of the coefficient matrix corresponding to a reordering of grid nodes consistent with the partition of the calculation domain. The construction of an incomplete triangular decomposition is carried out with cutting off by value at the internal nodes of subdomains and by value and position on the separators during coarse-grained parallelization. . Sufficient conditions for failure-free performance of the conjugate gradient method with t

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Karwat, Zbigniew. "Calibration of ultrasound tester delay time by cutting a wooden beam." Annals of WULS, Forestry and Wood Technology 110 (June 30, 2020): 131–39. http://dx.doi.org/10.5604/01.3001.0014.5625.

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Obtaining precise and reliable test results requires specific tools on one hand, and at the same time, reliability of the results should not be questioned. One of the necessary steps to achieve this goal is the calibration of the measuring device before the test. This article describes an experiment involving calibration of the device by an independent method called cutting beam calibration carried out on the ultrasonic material tester UMT 01. The standard calibration of this device is carried out by using a dedicated metal disc as a template. Calibration of the tester consisted of determining

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Shao, Lanying, Yu Zhou, Yanfei Dai, and Binghai Lyu. "Experimental Study on Flexible Fiber Assisted Shear Thickening Polishing for Cutting Edge Preparation of Core Drill." Lubricants 11, no. 2 (2023): 58. http://dx.doi.org/10.3390/lubricants11020058.

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To improve the cutting performance of the core drill, the flexible fiber assisted shear-thickening polishing (FF-STP) for cutting edge preparation was proposed to eliminate the microscopic defect and obtain proper radius of the cutting edge of the core drill. The flexible fiber was introduced into the shear-thickening polishing process to break the thickened agglomerates and improve the efficiency of cutting edge preparation. The influence of the polishing speed, abrasive concentration and the flexible fiber contact length with the core drill on the cutting edge radius r and surface morphology

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Moritz, Kolb, Tim Mayer, and Nico Rasenberger. "Standzeitoptimierung von Kreissägewerkzeugen/Optimization of the tool life of circular saw blades." wt Werkstattstechnik online 111, no. 11-12 (2021): 833–39. http://dx.doi.org/10.37544/1436-4980-2021-11-12-63.

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Dieser Beitrag beschreibt, wie sich die Standzeit von Kreissägeblättern durch Schneidkantenpräparation gezielt beeinflussen lässt. Hierfür wurden zunächst einzelne Segmente aus einem Sägeblatt herausgetrennt und Einzahnproben mit variierenden Schneidenmikrogeometrien mittels Bürstspanen präpariert. Anschließend wurde das Einsatz- und Verschleißverhalten der zuvor hergestellten Proben in einem Kreissäge-Modellversuch untersucht. &nbsp; This article describes how the service life of circular saw blades can be specifically influenced by cutting edge preparation. For this purpose, individual s

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Bur'yanov, A. I., M. A. Bur'yanov, and I. V. Chervyakov. "Methods and devices for processing the stemstock of cereal crops harvested using combine stripper harvester technology." Traktory i sel hozmashiny 85, no. 5 (2018): 9–14. http://dx.doi.org/10.17816/0321-4443-66374.

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The purpose of research is the development of methods and devices for the treatment of dense crop when harvesting grain crops with combines. Methods for utilization of dense crop are chopping with rotary shredders after threshing, cutting of recycled stalks into fragments during thrashing with tow, cutting of stripped stalks by a cleaning unit with its simultaneous laying in a roll. The development of methods was carried out taking into account the requirements for tillage carried out after the harvest of cereal crops on the fields, which should be prepared for the cultivation of subsequent cr

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Barnes, Simon. "Apprentices keep Dinamiks at the cutting edge of technology." Human Resource Management International Digest 23, no. 6 (2015): 15–17. http://dx.doi.org/10.1108/hrmid-06-2015-0097.

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Purpose – Describes the advantages that technology company Dinamiks gains from its apprenticeship program. Design/methodology/approach – Gives the managing director’s viewpoint of the benefits of apprenticeships to a small company. Findings – Reveals that apprentices have enabled Dinamiks to tap into the technology innovations and ways of working with technology that many young people take in their stride and to learn what of that needs to be included in its products. Practical implications – Details how the company has benefited from the energy of youth, a different style of conversation and

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Cao, Chuyuan, and Kui Zhang. "Systematic Performance Evaluation of Shield TBM Cutters for Excavating Multiple Soft Rock." Advances in Civil Engineering 2021 (June 21, 2021): 1–10. http://dx.doi.org/10.1155/2021/4026283.

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Cutter performance evaluation is important for shield TBM during the design and refurbishment stage. To face the challenges of choosing the proper cutters for tunneling in complex condition, according to the concept of parameter profile analysis, a systematic evaluation method was proposed. In this novel method, by comparing with their expected best value and the corresponding unacceptable limit, all of the selected performance parameters can be synthesized to assess the proximity of the overall merit of each cutter with respect to all the performances considered under all possible geological

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Peng, Tianhao, Changpeng Li, and Yanmin Zhu. "Design and Application of Simulating Cutting Experiment System for Drum Shearer." Applied Sciences 11, no. 13 (2021): 5917. http://dx.doi.org/10.3390/app11135917.

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When the shearer cuts coal or rock with different hardness, it will produce corresponding cutting state information. This paper develops a simulation cutting experiment system for the drum shearer based on similarity theory. It took the spiral cutting drum of a shearer as the research target and derived the principal similarity coefficients through the dimensional analysis method. Meanwhile, this paper designed the structure of the cutting power system and hydraulic system. Then, it chose a certain amount of coal powder as an aggregate, cement 325# as cementing material, sand, and water as aux

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Lowe, Angus, Matija Medvidović, Anthony Hayes, et al. "Fast quantum circuit cutting with randomized measurements." Quantum 7 (March 2, 2023): 934. http://dx.doi.org/10.22331/q-2023-03-02-934.

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We propose a new method to extend the size of a quantum computation beyond the number of physical qubits available on a single device. This is accomplished by randomly inserting measure-and-prepare channels to express the output state of a large circuit as a separable state across distinct devices. Our method employs randomized measurements, resulting in a sample overhead that is O&#x007E;(4k/&#x03B5;2), where &#x03B5; is the accuracy of the computation and k the number of parallel wires that are "cut" to obtain smaller sub-circuits. We also show an information-theoretic lower boun

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Zhang, Xing. "Study of Surface Roughness of Cutting Isothermally Hardened Ductile Iron in Tosa Knife Forging Technique Based on Intelligent Calculation." Mathematical Problems in Engineering 2022 (August 21, 2022): 1–10. http://dx.doi.org/10.1155/2022/9573713.

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With a long history of more than 600 years of development, the Achang Tosa knives have always been handmade and made in strict accordance with tradition and absorbing the essence of foreign cultures. It is not only a tool or a gift, but also a “knife culture” and a local “folk culture” with local ethnic characteristics in Yunnan. In this paper, we begin our research on the Achang Tosa knives by compiling literature and conducting field research to investigate the “knife culture” jointly created by the Achang and neighboring ethnic groups by studying the forging process of the Achang Tosa knive

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Çezik, Fatmanur, Çetin Çekiç, Kenan Yıldız, Hakan Karadağ, and Osman Nuri Öcalan. "Açık ve Karanlık Koşulların Karadut (Morus nigra L.) Odun Çeliklerinin Kök Gelişimi Üzerine Etkileri." Turkish Journal of Agriculture - Food Science and Technology 10, sp1 (2022): 2718–21. http://dx.doi.org/10.24925/turjaf.v10isp1.2718-2721.5680.

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This study was carried out to determine the root development of black mulberry hardwood cuttings kept in light and dark conditions. The experiment was carried out in the polyethylene greenhouse of Tokat Gaziosmanpaşa University Research and Application Center, in 2021. As material, hardwood cuttings prepared from one-year-old branches of black mulberry trees were used. The cuttings were divided into 3 different groups and planted in rooting beds containing perlite with bottom heating (22±2 °C). First group of cuttings were planted into beds as soon as taken from tree (control), the second grou

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Wasiana, M. Rizky Faisal Dermawan, and Iswanto Iswanto. "Analysis of Weld Joint Strength on Galvanized Material Using Rb-26 Electrode." Procedia of Engineering and Life Science 7 (March 13, 2024): 295–99. http://dx.doi.org/10.21070/pels.v7i0.1469.

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Practical work is a form of education and vocational implementation that is followed by students so that students can work directly in the business world as well as industry or fabrication. Practical work aims to prepare students to become productive human beings and can immediately work in accordance with their respective fields, students can also feel the atmosphere of production and can help deal with some problems- problems experienced by Engineering professionals inside the factory. Therefore, in welding, knowledge must accompany practice, in more detail it can be said that the design of

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Wasiana, M. Rizky Faisal Dermawan, and Iswanto Iswanto. "Analysis of the Causes of Crooked Cane Carrier Shafts at the Kremboong Sugar Factory." Procedia of Engineering and Life Science 7 (March 14, 2024): 335–38. http://dx.doi.org/10.21070/pels.v7i0.1477.

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Practical work is a form of education and vocational implementation that is followed by students so that students can work directly in the business world as well as industry or fabrication. Practical work aims to prepare students to become productive human beings and can immediately work in accordance with their respective fields, students can also feel the atmosphere of production and can help deal with some problems- problems experienced by Engineering professionals inside the factory. Therefore, in welding, knowledge must accompany practice, in more detail it can be said that the design of

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Stępień, Bogdan, Radosław Maślankowski, Marta Pasławska, Klaudiusz Jałoszyński, and Mariusz Surma. "Effect of Osmotic Dehydration on Mechanical and Rheological Properties of Pumpkin Dried with Microwave Method in Reduced Pressure Conditions." Agricultural Engineering 20, no. 1 (2016): 185–94. http://dx.doi.org/10.1515/agriceng-2016-0019.

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AbstractThe objective of the research was to indicate the impact of sirup type used for osmotic dehydration and the microwaves power for microwave and vacuum drying on the selected mechanical and rheological properties of dried pumpkin. Pumpkin cultivar Rugosa was osmotically dehydrated in three concentrates: apple, aronia and cherry. Initially prepared material was dried with microwave method in the reduced pressure conditions which was within 6-4 kPa at the microwave power which was 240 and 480 W. Dried material was subjected to compression tests and stresses relaxation tests. Compression wo

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Facci, G., A. Bottardi, G. Venturi, et al. "TO CUT OR NOT TO CUT: CUTTING BALLOON FOR LESION PREPARATION BEFORE DRUG COATED BALLOON ANGIOPLASTY." European Heart Journal Supplements 26, Supplement_2 (2024): ii45. http://dx.doi.org/10.1093/eurheartjsupp/suae036.102.

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Abstract Background There are limited data on the use of DCB in calcified lesions. In particular, evidence regarding the use of cutting balloon before DCB angioplasty is scarce. Methods We retrospectively analyzed our internal registry between May 2017 and May 2023 to retrieve intrastent restenosis angioplasty performed with DCB. We divided our population according to the use of cutting balloon as debulking technique before DCB. The objective of the study was to compare the two population in term of procedural success (primary endpoint defined as absence of flow–limiting dissection or residual

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Zhang, Yu, Lingsheng Han, Qingbo Yu, et al. "Experimental study on defects of needled quartz fiber reinforced phenolic aerogel composites by cryogenic milling." Journal of Physics: Conference Series 2578, no. 1 (2023): 012004. http://dx.doi.org/10.1088/1742-6596/2578/1/012004.

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Abstract Needled quartz fiber reinforced phenolic aerogel composite (NQF/PA) is a kind of lightweight thermal protection material commonly used in the aerospace field. With the continuous development of aerospace science and technology, the design of various spacecraft is becoming more and more complex. Due to the limitation of the preparation process, thermal protection components are difficult to be directly prepared and formed. It is often necessary to carry out secondary processing in order to bond and assemble into a large-size combined thermal protection system. Because NQF/PA composites

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Wang, Xue, Nan Xu, and Kuisan Zhou. "Preparation of Polymer Microemulsion Flocculant and its Application in Drilling Fluid." Journal of Physics: Conference Series 2174, no. 1 (2022): 012066. http://dx.doi.org/10.1088/1742-6596/2174/1/012066.

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Abstract Organic macromolecular flocculants have broad application prospects in drilling fluid systems due to their strong adsorption capacity and many other advantages. At present, polyacrylamide polymer is mostly used in drilling fluid, which is difficult to dissolve, time-consuming and laborious. In this regard, this study uses acrylamide and acrylic acid as monomers, mixes acrylic acid with potassium hydroxide, adds disodium ethylenediaminetetraacetic acid solution after adsorption and filtration, and then adds acrylamide to prepare a mixed solution, using H2O2 as the initiator, polymeriza

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