Generally speaking, the hardness of fruit maturity and fruit are closely related, and therefore used to store fruit hardness melon fruit and the like, in order to improve the preservation effect of the fruit storage, people using the 1-MCP treated microcapsules at room temperature, The fruit hardness tester was used to verify its storage and preservation effect on melon, and the application prospect of this plant growth regulator in melon preservation was analyzed.
1-MCP is 1-methyl cyclopropene short, it is a plant growth regulator, studies show, application of 1-MCP can be improved Preservation of Fruits, the main reason is that 1-MCP by blocking with ethylene Receptor binding inhibits ethylene-induced fruit maturation, which can delay ripening and senescence during fruit storage and achieve an insurance effect.
The sample used in the experiment was Baiyu melon, which is a kind of greenhouse cultivated melon varieties that were purified and purified from white sand melon. White muskmelon fruit firmness was measured using a Top fruit hardness meter cloud agricultural production was measured, the measurement results show, 1-MCP treatment significantly influence on the hardness of the white muskmelon, can significantly reduce the delay of firmness, 7 after administration, On day 14,21 and 28, the hardness of 1-MCP microcapsules was significantly higher than that of the blank control. At 7 days, the hardness of 0.3 mg/L treatment was not significantly different from the blank control, 0.6 mg/L, 1.0 mg/L. The hardness of the two treatments was significantly different from the blank control. The hardness of 3-MCP microcapsules in the three treatments at 28 days was significantly different from that of blank control.
Test except that the influence of hardness of fruit plant growth regulators 1-MCP of white melon fruit firmness, but also to carry out tests on 1-MCP Effect soluble solids content melon white, white on the 1-MCP treated melon impact test good melon rate and 1-MCP treatment on a comprehensive test on the white melon quality measurement results indicate, 1-MCP in a range for the amount of reagent, in time the day after harvest melon, melon can be kept within a certain period The higher hardness and the original color and quality significantly delayed the aging of white jade melon and improved the storage quality of melon. The preservation effect increased slightly with the increase of the dose and decreased with time. It is preliminarily considered that the suitable dose for preserving fresh melon with 1-MCP microcapsules is 0.6 mg/L, which can delay the shelf life of about 15 days.
A lathe is used to fashion a rotating piece of raw metal, wood, or composite into a precise configuration using movable cutting tools, or bits set to varying depths. The process, known as turning, or machining, is most often accomplished with a horizontal lathe. Often, however, space or material constraints, sometimes even personal preferences, necessitate the use of a vertical lathe.
Essentially a horizontal lathe turned on end, a vertical lathe, also called a boring tool, is composed of basically the same parts as a horizontal lathe. As implied, the functions of vertical lathes are performed up and down, rather than side to side, as is the case with horizontal lathes. This vertical alignment allows short, heavy, bulky materials to be machined more efficiently than with a horizontal lathe.
All lathes, vertical or horizontal, are comprised of the same basic parts. The headstock encloses the spindle and chuck, the parts that actually turn the material. The bed catches the shavings, and also serves as a brace for the horizontal lathe. The feedscrew and leadscrew, mounted on the lathe carriage, adjust the speed and distance traveled by the cutters along the stock. The cross slide and compound rest position the toolbox, which, in turn, mounts the bits.
The tailpost, at the opposite end of the lathe spindle, clutches the stock and braces it, thus eliminating wobble and vibration. The headstock and tailpost may be at the upper or lower end of a vertical lathe, or to the right or left end of a horizontal lathe. Either way, the headstock is one end of the lathe, the tailstock, the other.
Vertical lathes may be vertical turret lathes (VTL), where a turret holds various toolboxes, allowing little wasted time resetting bits during the machining process. There are also computer numerical control (CNC) vertical lathes in which the entire machining process is computer operated.
The top of the lathe pyramid are the CNC vertical turret lathe machines, most often used to turn stainless steel into precision parts for engines, turbines, transmissions, etc. These machines, though expensive to purchase and operate, are perfectly suited to the task, saving space, as well as over-stressed equipment. A CNC VTL can also be used on alloys to efficiently turn precision bearings and gears.
A vertical lathe can used on rough wood in a home workshop, mainly for its space-saving attribute. Many home hobbyists, however, simply feel more comfortable turning wood up and down, rather than side to side. Altogether, the vertical lathe is a very capable and versatile tool.
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