Research Status and Problem Analysis on Pineapple Leaf Crushing and Returning Technology

2014 ◽  
Vol 1061-1062 ◽  
pp. 272-276
Author(s):  
Ling Li ◽  
Jin Zhang ◽  
Zhong Qing Ou ◽  
Zhen De Cui ◽  
Yu Lin Li ◽  
...  

Pineapple is widely planted as one of the four major crops in in south China. The handling of residual pineapple leaves is not a step for looking down upon after harvesting. So far, returning the residual on the filed is the popular method, compared to set the residual on fire, crushing and returning has distinct advantage on high-efficient and low-pollution. In the text, the technology and machine of crushing and returning is summarized, and the current problems is analyzed and discussed.

2011 ◽  
Vol 141 ◽  
pp. 152-156
Author(s):  
Tao Wang ◽  
Yu Jun Cai ◽  
Guo He Li

The research status of 2-D machining of cutting edge and flanging edge of automobile die are reviewed, and the key factor that influences the cycle and cost is pointed out. According to the characteristic of NC machine command and the particular requirement of cutter location precision during cutting, a new spiral interpolation algorithm is presented based on the in-depth analysis of pre-interpolation. The influences of the height of die edges, the length of cutter’s side blade and holder collision are all considered during interpolation, which make the upper cutter blade used as much as possible without any holder collision. Finally, the high-efficient auto NC machining of 3-D die edges is realized.


2017 ◽  
Vol 260 ◽  
pp. 59-65 ◽  
Author(s):  
Maciej Rećko ◽  
Justyna Tołstoj-Sienkiewicz ◽  
Paweł Turycz

Presented paper focuses on design process of Soil Sample Retrieval System for simple on-board analysis of collected material and cashing it for further examination. System is created to be mounted on mobile robotic platforms to provide a tool suitable for sampling scientifically interesting sites in remote and even hazardous for human environments [1,2,4].Considered solution will be thoroughly tested during University Rover Challenge 2016 aiding #next team efforts to proof life existence in mock-up Mars surface setting located nearby Mars Desert Research Station, Hanksville Utah. This procedure is one of challenge’s task that proves scientific usefulness of a built rover. It requires collection of unaltered sub-surface soil sample, preliminary examination and cashing it on-board for further analysis.The device needs to be capable of collecting sub-surface soil samples, then transporting gathered material to cash and experiment containers also embedded onto platform [3]. It uses a drilling technique similar to one used to crush concrete and hard rocks.Powder created during sampling is further transported via system of tubes powered with vacuum. In order to create under pressure system was equipped with high-efficient turbine capable of producing up to 45 kg of suction force. This new approach has never been used before during such competition. We believe it will provide much needed advantage during this task over other competitors.The system allows an equal distribution of collected soil into designated containers. They are fitted out with desired scientific equipment. In considered exemplary model there are three containers. One being equipped with pH sensor, second-a humidity sensor and third one for cashing unaltered sample for further laboratory experimentations. It can also be equipped with additional sensors such as black light emitter with CCD sensor to determine cyanobacteria presence.The paper consists of three parts. First one focuses on problem analysis [2,3], system design and preliminary tests description. Second one describes device manufacturing and tests. Last part consists of results analysis with a critical validation of presented solution and recommendations for further development.


Author(s):  
Linda M. Sicko ◽  
Thomas E. Jensen

The use of critical point drying is rapidly becoming a popular method of preparing biological samples for scanning electron microscopy. The procedure is rapid, and produces consistent results with a variety of samples. The preservation of surface details is much greater than that of air drying, and the procedure is less complicated than that of freeze drying. This paper will present results comparing conventional air-drying of plant specimens to critical point drying, both of fixed and unfixed material. The preservation of delicate structures which are easily damaged in processing and the use of filter paper as a vehicle for drying will be discussed.


Author(s):  
Jin Young Kim ◽  
R. E. Hummel ◽  
R. T. DeHoff

Gold thin film metallizations in microelectronic circuits have a distinct advantage over those consisting of aluminum because they are less susceptible to electromigration. When electromigration is no longer the principal failure mechanism, other failure mechanisms caused by d.c. stressing might become important. In gold thin-film metallizations, grain boundary grooving is the principal failure mechanism.Previous studies have shown that grain boundary grooving in gold films can be prevented by an indium underlay between the substrate and gold. The beneficial effect of the In/Au composite film is mainly due to roughening of the surface of the gold films, redistribution of indium on the gold films and formation of In2O3 on the free surface and along the grain boundaries of the gold films during air annealing.


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