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Articles 151 - 180 of 32391
Full-Text Articles in Entire DC Network
Water Bond. Funding For Water Quality, Supply, Recycling, And Storage Projects. Initiative Statute.
Water Bond. Funding For Water Quality, Supply, Recycling, And Storage Projects. Initiative Statute.
Initiatives
Authorizes $4.92 billion in general obligation bonds for water supply infrastructure projects, including watershed improvement and water quality enhancement; water recycling and desalination; capturing urban runoff; flood management; water for wildlife; water conservation; groundwater sustainability and storage; and safe drinking water. Appropriates money from the General Fund to pay off bonds. Requires certain projects to provide matching funds from non-state sources in order to receive bond funds. Summary of estimate by Legislative Analyst and Director of Finance of fiscal impact on state and local government: State General Fund costs of $9.8 billion to pay off principal ($4.9 billion) and interest …
Water Bond. Funding For Water Quality, Supply, Recycling, And Storage Projects. Initiative Statute.
Water Bond. Funding For Water Quality, Supply, Recycling, And Storage Projects. Initiative Statute.
Initiatives
Authorizes $6.02 billion in general obligation bonds for water supply infrastructure projects, including watershed improvement and water quality enhancement; capturing urban runoff; water recycling and desalination; flood management; water conservation; water for wildlife; groundwater sustainability and storage; and safe drinking water. Appropriates money from the General Fund to pay off bonds. Requires certain projects to provide matching funds from non-state sources in order to receive bond funds. Summary of estimate by Legislative Analyst and Director of Finance of fiscal impact on state and local government: State General Fund costs of $12 billion to pay off principal ($6 billion) and interest …
Water Bond. Funding For Water Quality, Supply, Recycling, And Storage Projects. Initiative Statute.
Water Bond. Funding For Water Quality, Supply, Recycling, And Storage Projects. Initiative Statute.
Initiatives
Authorizes $6.02 billion in general obligation bonds for water supply infrastructure projects, including watershed improvement and water quality enhancement; capturing urban runoff; water recycling and desalination; flood management; water conservation; water for wildlife; groundwater sustainability and storage; and safe drinking water. Appropriates money from the General Fund to pay off bonds. Requires certain projects to provide matching funds from non-state sources in order to receive bond funds. Summary of estimate by Legislative Analyst and Director of Finance of fiscal impact on state and local government: State General Fund costs of $12 billion to pay off principal ($6 billion) and interest …
Water Bond. Funding For Water Quality, Supply, Recycling, And Storage Projects. Initiative Statute.
Water Bond. Funding For Water Quality, Supply, Recycling, And Storage Projects. Initiative Statute.
Initiatives
Authorizes $6.02 billion in general obligation bonds for water supply infrastructure projects, including watershed improvement and water quality enhancement; capturing urban runoff; water recycling and desalination; flood management; water conservation; water for wildlife; groundwater sustainability and storage; and safe drinking water. Appropriates money from the General Fund to pay off bonds. Requires certain projects to provide matching funds from non-state sources in order to receive bond funds. Summary of estimate by Legislative Analyst and Director of Finance of fiscal impact on state and local government: State General Fund costs of $12 billion to pay off principal ($6 billion) and interest …
Water Bond. Funding For Water Quality, Supply, Recycling, And Storage Projects. Initiative Statute.
Water Bond. Funding For Water Quality, Supply, Recycling, And Storage Projects. Initiative Statute.
Initiatives
Authorizes $6.02 billion in general obligation bonds for water supply infrastructure projects, including watershed improvement and water quality enhancement; capturing urban runoff; water recycling and desalination; flood management; water conservation; water for wildlife; groundwater sustainability and storage; and safe drinking water. Appropriates money from the General Fund to pay off bonds. Requires certain projects to provide matching funds from non-state sources in order to receive bond funds. Summary of estimate by Legislative Analyst and Director of Finance of fiscal impact on state and local government: State General Fund costs of $12 billion to pay off principal ($6 billion) and interest …
Research On Characteristics Of Burdock By Microwave Drying At Constant Temperature, Ji Fei, Li Zhenfeng, Li Jing, Xu Wanxiu
Research On Characteristics Of Burdock By Microwave Drying At Constant Temperature, Ji Fei, Li Zhenfeng, Li Jing, Xu Wanxiu
Food and Machinery
The drying characteristics of burdock were studied using self-made weight and temperature facilities. The moisture content and the internal temperature were acquired online. Taken microwave power density, temperature and sample depth as the influence factor, and the optimal parameters for drying burdock by microwave were obtained through orthogonal experiment. The optimized parameters were as followed: the power density 10 W/g, the internal temperature of sample 60 ℃, and the samples thickness 2 mm. Under these conditions, the rehydration rate R value and the color difference ΔE value of dried burdock were 3.77 and 64.37, respectively. ANOVA of the evaluation index …
Study On Characteristics On Depth Of Walnut By Hot-Air Drying, Wang Qinghui, Yan Shengkun, Li Zhongxin, Gao Zhenjiang
Study On Characteristics On Depth Of Walnut By Hot-Air Drying, Wang Qinghui, Yan Shengkun, Li Zhongxin, Gao Zhenjiang
Food and Machinery
To solve the problem of drying in walnut postharvest processing, the hot-air drying technology was applied to walnut. A specifically depth drying equipment was designed and the experiment was done. The drying characteristics of walnut were investigated under different drying temperatures (35, 40, 45, 50 ℃), air velocities (0.5, 1.0, 1.5, 2.0 m/s), and load depths (0.6, 0.9, 1.2, 1.5 m). Experimental results showed that the whole drying process occurred in the falling rate period, and the effect of drying temperature, air velocity and load depth on drying characteristics was significant. The optimal drying process was temperature 45 ℃, air …
Antioxidant Activity Of Capsaicin In Vitro, Liu An, Wang Zhen, Liu Linfeng, Xiang Yi, Xiao Wenjun
Antioxidant Activity Of Capsaicin In Vitro, Liu An, Wang Zhen, Liu Linfeng, Xiang Yi, Xiao Wenjun
Food and Machinery
The antioxidant activity of capsaicin was evaluated through building antioxidant experiment model in vitro, taking capsaicin monomer as standard sample, and Vc as the contrast. By analyzing the reducing power of capsaicin and scavenging experiments on the DPPH radical, superoxide anion radical (O-2·), nitroso and hydroxyl radical (·OH), discussed capsaicin the antioxidant properties. The results showed that: reducing power of capsaicin increased with mass concentration increasing, and the DPPH radical, nitroso and clearance rate of ·OH with mass concentration increasing, and the scavenging effect and Vc basically similar, but with lower clearance to O-2·; the clearance of capsaicin to DPPH·, …
Ultrasonic-Assisted Two-Phase Aqueous Extraction And Antioxidant Activity Of Polyphenols From The Seed Of Synespalum Dulcificum, Ma Yidan, Liu Hong, Liao Xiaowei, Yan Ruixin, Qi Jinling
Ultrasonic-Assisted Two-Phase Aqueous Extraction And Antioxidant Activity Of Polyphenols From The Seed Of Synespalum Dulcificum, Ma Yidan, Liu Hong, Liao Xiaowei, Yan Ruixin, Qi Jinling
Food and Machinery
The seed of Synespalum dulcificum was untrasonified in the acetone-(NH4)2SO4 aqueous two-phase syetem to extract total polyphenils and different conditions for extraction of polyphenols antioxidant activity was investigated. Acetone was chosen as the best extraction solvent for this research. The acetone concentration, amount of the (NH4)2SO4, the ultrasonic time,extraction temperature, ratio of water to solid were discussed by the single factor experiment. The optimal extraction conditions were found to be: the concentration of acetone solution 50%, ultrasonic time 100 min and extraction temperature 60 ℃,ratio of water to solid …
Study On Combined Drying Technology Of Lotus Root Chips, Xing Fang, Wang Jianhui, He Xinyi, Wu Haiqing, Wu Jiali, Liu Pei
Study On Combined Drying Technology Of Lotus Root Chips, Xing Fang, Wang Jianhui, He Xinyi, Wu Haiqing, Wu Jiali, Liu Pei
Food and Machinery
To obtain the the processing technology of lotus root chips, taken lotus root as raw materials, the effects offreeze drying time, hot-air drying temperature and hot-air drying time on quality of lotus chips by combination of freeze drying and hot-air drying were explored. Experiment results indicated the optimized technological parameters of combined freeze dring and hot-air drying were freeze drying 4h, then hot-air drying at 50 ℃ for 2 h. At those conditions, the color value L*, a*, b* and hardness value of lotus root slices were 77.65, 0.96, 9.03 and 385.3 g, respectively. The results showed that combined drying …
Brewing Process Optimization Of Gordon Euryale Seed Wine, Li Yan, Lin Meiying, Li Yunsong
Brewing Process Optimization Of Gordon Euryale Seed Wine, Li Yan, Lin Meiying, Li Yunsong
Food and Machinery
The gordon euryale seed starch was hydrolyzed by α-amylase and glucoamylase to prepare starch syrup, and then the saccharomyces cerevisiae was added to prepare the health wine. The technology parameters were optimized by single factor and orthogonal experiments. And the optimal fermentation conditions were gotten. With the ratio of mass to water of 1︰10, the optimum liquefaction conditions were: addition of α-amylase of 0.4%, liquefaction temperature 70 ℃, and liquefaction time 60 min. The optimum saccharifying conditions were: addition of glucoamylase 0.5%, saccharifying temperature 60 ℃,and saccharifying time of 1 h. Under the saccharifying conditions, the sugar content of the …
Applications Of Carbon Materials In Electrochemical Energy Storage, Ji Liang, Lei Wen, Hui-Ming Cheng, Feng Li
Applications Of Carbon Materials In Electrochemical Energy Storage, Ji Liang, Lei Wen, Hui-Ming Cheng, Feng Li
Journal of Electrochemistry
An electrode material for electrochemical energy storage is one of the key components for high performance devices. In a variety of electrochemical energy storage systems, carbon materials, especially the lately emerged carbon nanomaterials including the carbon nanotube and graphene, have been playing a very important role and brought new vitality to the development and demonstration of the broad application prospects. In this review, we summarize the applications of various carbon materials in the typical electrochemical energy storage devices, namely lithium/sodium ion batteries, supercapacitors, and lithium-sulfur batteries, as well as flexible electrochemical energy storage and electrochemical catalysis. A perspective of novel …
Intercalation Of Clo4- Into Hopg Investigated By Ec-Stm, Xiao-Yan Hu, Alice Aliwowe, Jia-Wei Yan, Bing-Wei Mao
Intercalation Of Clo4- Into Hopg Investigated By Ec-Stm, Xiao-Yan Hu, Alice Aliwowe, Jia-Wei Yan, Bing-Wei Mao
Journal of Electrochemistry
The electrochemical intercalation and surface morphology of highly oriented pyrolytic graphite (HOPG) electrode in 2 mol⋅L-1 HClO4 were studied by in situ scanning tunneling microscopy (STM) and cyclic voltammetry (CV). Based on the step-height changes observed before and after the intercalation, the effects of different step sites on intercalation are compared. The feasibility, reversibility and speed of intercalation are discussed. The intercalation ofClO4- into HOPG can be divided into three types depending on the number of graphite layers at the step site: When the layers of graphite are more than three, the intercalation becomes feasible; when …
Energy-Efficient Selective Activation In Femtocell Networks, Michael Lin, Simone Silvestri, Novella Bartolini, Thomas La Porta
Energy-Efficient Selective Activation In Femtocell Networks, Michael Lin, Simone Silvestri, Novella Bartolini, Thomas La Porta
Computer Science Faculty Research & Creative Works
Provisioning the capacity of wireless networks is difficult when peak load is significantly higher than average load, for example, in public spaces like airports or train stations. Service providers can use femtocells and small cells to increase local capacity, but deploying enough femtocells to serve peak loads requires a large number of femtocells that will remain idle most of the time, which wastes a significant amount of power. To reduce the energy consumption of over-provisioned femtocell networks, we formulate a femtocell selective activation problem, which we formalize as an integer nonlinear optimization problem. Then we introduce Green Femto, a distributed …
Framework For Hyperspectral Image Processing And Quantification For Cancer Detection During Animal Tumor Surgery, Guolan Lu, Dongsheng Wang, Xulei Qin, Luma Halig, Susan Muller, Hongzheng Zhang, Amy Chen, Brian W. Pogue, Zhuo G. Chen
Framework For Hyperspectral Image Processing And Quantification For Cancer Detection During Animal Tumor Surgery, Guolan Lu, Dongsheng Wang, Xulei Qin, Luma Halig, Susan Muller, Hongzheng Zhang, Amy Chen, Brian W. Pogue, Zhuo G. Chen
Dartmouth Scholarship
Hyperspectral imaging (HSI) is an imaging modality that holds strong potential for rapid cancer detection during image-guided surgery. But the data from HSI often needs to be processed appropriately in order to extract the maximum useful information that differentiates cancer from normal tissue. We proposed a framework for hyperspectral image processing and quantification, which includes a set of steps including image preprocessing, glare removal, feature extraction, and ultimately image classification. The framework has been tested on images from mice with head and neck cancer, using spectra from 450- to 900-nm wavelength. The image analysis computed Fourier coefficients, normalized reflectance, mean, …
Colloidal Ionic Supercapacitors, Kun-Feng Chen, Dong-Feng Xue
Colloidal Ionic Supercapacitors, Kun-Feng Chen, Dong-Feng Xue
Journal of Electrochemistry
Supercapacitors have high power density and long cycle life compared with battery systems, but they still suffer from low energy density at the same time. In order to increase the energy density of supercapacitors, we have developed a new type of pseudocapacitor, called colloidal ion supercapacitor, which can directly use commercial metal salts as electrode materials and form electroactive matter by in-situ electrochemical reactions without the need of additional materials synthesis processes. Colloidal ion supercapacitor can fully utilize the redox reaction of metal cations with multiple oxidation states, which can completely release the stored electrical energy of multiple-valence cations, leading …
Advanced Techniques For Computational And Information Sciences, William Guo, Chih-Cheng Hung, Paul Scheunders, Bor-Chen Kuo
Advanced Techniques For Computational And Information Sciences, William Guo, Chih-Cheng Hung, Paul Scheunders, Bor-Chen Kuo
Faculty Articles
New techniques in computational and information sciences have played an important role in keeping advancing the so called knowledge economy. Advanced techniques have been introduced to or emerging in almost every field of the scientific world for hundreds of years, which has been accelerated since the late 1970s when the advancement in computers and digital technologies brought the world into the Information Era. In addition to the rapid development of computational intelligence and new data fusion techniques in the past thirty years [1–4], mobile and cloud computing, grid computing driven numeric computation models, big data intelligence, and other emerging technologies …
Research Progress On Quality Characteristics And Processing Adaptability Of Early Indica Rice, Li Yanan, Hu Peisong, Wang Li, Chen Zhengxing
Research Progress On Quality Characteristics And Processing Adaptability Of Early Indica Rice, Li Yanan, Hu Peisong, Wang Li, Chen Zhengxing
Food and Machinery
Early indica rice is an important support for China's food security. Based on the status of rich early indica rice resource but not used effectively, comparing and analyzing the qualitative character of early indica rice to explore the deep processing direction, and screening the suitable early indica rice varieties according to the quality characteristics of rice products, provided theoretical basis for the cultivation and promotion of good varieties of early indica rice.
Building Of Training Model And Teaching System Of Complex Food Safety Professionals, Yan Shijie, Liang Liya, Liu Jinfu, You Lingling, Zhang Pingping
Building Of Training Model And Teaching System Of Complex Food Safety Professionals, Yan Shijie, Liang Liya, Liu Jinfu, You Lingling, Zhang Pingping
Food and Machinery
The method of ‘whole process control’ was adopted, with the cooperation of ideological and professional, the combination of theory and practices, the tracking from raw material to product, and junior to senior management, the ‘1+4’ complex food safety training model of full quality control was built. Using the concept of ‘multiple synergies’, reformed teaching methods, optimized curriculum system and innovated practice teaching, the teaching system suitable for multiple food safety personnel talents was established.
Exploring The Russian Online Gift-Exchange Communities: The Results Of Nethnographic Approach, Elizaveta Polukhina, Anna Strelnikova
Exploring The Russian Online Gift-Exchange Communities: The Results Of Nethnographic Approach, Elizaveta Polukhina, Anna Strelnikova
The Qualitative Report
This paper reports on a two-week nethnographic (online) observation of four online gift-exchange communities – virtual platforms, where participants conduct barter exchange of different daily objects such as books, children's products, furniture, home ware and others. These communities as case of informal economy initially do not have formal attributed rules. It is essential to find out (1) which rules and mechanisms exist in this type of economy; (2) what motivates people who are not acquainted with another to exchange gifts; and (3) understand the way this community exists. The conclusion is drawn that social capital is the basic engine of …
Synthesis And Characterization Of Rice Husk Based Lignin-Bisphenol A Epoxy Resin, Li Ying, Li Xin, Yu Zhike, Zhou Xueying, Ni Caihua, Shi Gang
Synthesis And Characterization Of Rice Husk Based Lignin-Bisphenol A Epoxy Resin, Li Ying, Li Xin, Yu Zhike, Zhou Xueying, Ni Caihua, Shi Gang
Food and Machinery
Lignin was extracted using alkali distillation from rice husk, which is the food processing waste. As the structure of lignin and bisphenol A is similar, lignin modified bisphenol A epoxy resin could be prepared under alkali as catalyst by blending them. It can be concluded that when the lignin substitution rate was 20%, the epoxy value of the epoxy resin was 0.3, the weight-average molecular weight was 6 045, and the molecular weight distribution was relatively uniform.
Physical Properties Of Edible Composite Films Based On Chitosan And Whey Protein Isolate, Wang Yaosong, Zhao Liming, Wu Yanqing
Physical Properties Of Edible Composite Films Based On Chitosan And Whey Protein Isolate, Wang Yaosong, Zhao Liming, Wu Yanqing
Food and Machinery
The chitosan with different molecular weights (MW: 50 kDa, 250 kDa, 500 kDa and 1 000 kDa) were used to respectively combine whey proteins to form their composite films. It was expected that chitosan/whey proteins films endowed with versatile functionalities to meet practical requirement of food packaging applications. The equal volume of 3% (m/V) chitosan dissolved in 2% (m/V) acetic acid solutions and 12% (m/V) preheated (80 ℃ for 30 min) whey protein solutions was used to prepare resulting film-forming solutions after 2.4% (based on whey protein content, m/m) glycerol to make cast composite films. The functional propertied of the …
Drying Kinetics Of Pullulan-Based Film Forming Solutions, Zhou Yujia, Xiao Qian, Lu Xingchi, Deng Fangming
Drying Kinetics Of Pullulan-Based Film Forming Solutions, Zhou Yujia, Xiao Qian, Lu Xingchi, Deng Fangming
Food and Machinery
The drying kinetics of pullulan and pullulan-PEG film forming solutions were investigated. The results were as followed: the drying curves of pullulan-based films were divided into three stages: the rising rate, the falling rate, and the constant rate period; four mathematical models were fitted to the experimental data; among the drying models considered, the Wang and singh model was found to satisfactorily describe the drying kinetics of pullulan solutions. However, Modified Page equation-II model was found to satisfactorily describe the drying kinetics of pullulan-PEG solutions. As the drying temperature increased from 40 ℃ to 70 ℃, the effective moisture diffusion …
Drying Characteristics With Short- And Medium- Wave Infrared And Quality Changing Of Hosui Pear, Tang Lulu, Yi Jianyong, Bi Jinfeng, Chen Qinqin, Hou Xujie, Liu Xuan
Drying Characteristics With Short- And Medium- Wave Infrared And Quality Changing Of Hosui Pear, Tang Lulu, Yi Jianyong, Bi Jinfeng, Chen Qinqin, Hou Xujie, Liu Xuan
Food and Machinery
In order to improve the qualities of dried hosui pear(Pyrus pyrifolia Nakai.) slices and shorten the drying time, short- and medium- wave infrared drying was applied to drying hosui pear slices. The effects of drying temperatures, drying power, and radiation distances on the drying characteristic of hosui pear were investigated. Meanwhile, the impact of short- and medium- wave infrared drying on color, texture and moisture content of dried hosui pear were analyzed. The results showed that the drying procedure appeared as a falling rate period. The water effective diffusion coefficient (Deff) of hosui pear ranged from 8.622 6×10 …
Study On Dynamic Changes Of Browning And Active Components In Chaenomeles Spiciosa(Sweet) Nakai During Low Temperature Air Drying, Cui Li, Song Shuangshuang, Du Liping, Wang Daijie, Geng Yanling, Wang Xiao
Study On Dynamic Changes Of Browning And Active Components In Chaenomeles Spiciosa(Sweet) Nakai During Low Temperature Air Drying, Cui Li, Song Shuangshuang, Du Liping, Wang Daijie, Geng Yanling, Wang Xiao
Food and Machinery
In order to evaluate the effects of drying method on the color and active components from Chaenomeles spiciosa(Sweet) Nakai, which was dried under low temperature hot air, then the change law of the chromaticity value, browning enzymes and the contents of some components were determined. The results showed that during the process of drying, there was a close positive relationship between the rate of water loss and the severity of the injured cell membrane, with the correlativity coefficient 0.989, while, there was negative correlation between the peroxidase activity and the severity of the injured cell membrane, with the correlativity coefficient …
Determination On Salt Content Of Dry-Cured Meat By Rapid And Non-Invasion Impedance Technology, Chen Tianhao, Han Minyi, Wang Peng, Wei Ran, Xu Xinglian
Determination On Salt Content Of Dry-Cured Meat By Rapid And Non-Invasion Impedance Technology, Chen Tianhao, Han Minyi, Wang Peng, Wei Ran, Xu Xinglian
Food and Machinery
The experiment was conducted to establish a new method to determine the salt content in cured meat and treated the meat with different salt content as samples. Impedance, salt content and water content were measured in the experiment and the results showed that the method would be a good choice for the determination of the salt content. Result: And, there was strong relationship between the impedance and the salt content. It is possible to construct some linear model between these two parameters. It indicated that there is good correlation between the predicted salt content and impedance magnitude (R2=0.980 …
Acetaldehyde Analysis Of Beverage Plastic Bottle And Control Measures, Ai Li, Chen Changsong
Acetaldehyde Analysis Of Beverage Plastic Bottle And Control Measures, Ai Li, Chen Changsong
Food and Machinery
The method of gas chromatography was used on acetaldehyde detection, and the data was analyzed, from the PET raw material to plastic bottles. According to the practical control measures, it was proved that the impact of plastic bottle on human body is in a controllable state.
Application On Sea Cucumber Cooking EquipmentS Control Based On Bypass Adjustment, Ni Jin, Xu Wenqi, Shen Jian
Application On Sea Cucumber Cooking EquipmentS Control Based On Bypass Adjustment, Ni Jin, Xu Wenqi, Shen Jian
Food and Machinery
Traditional sea cucumber cooking equipments temperature control was fixed value control, and there were a lot of problems such as poor regulating ability, large overshoot and control lag. In order to solving those problems, first of all, steam bypass adjusting system was designed for sea cucumber cooking equipment, in order to realizing cooking temperatures precise control. Secondly, the sea cucumber cooking equipment was converted to an equivalent heat transfer system, and then established its heat transfer computing model and solving strategy. Thirdly, the heat transfer computing model was embedded to control algorithm, temperature perturbation predicted by using heat transfer computing …
3d Modeling Of Polygon Rotating Metal Shell Based On Creator, Qin Haining, Miao Xiaobin
3d Modeling Of Polygon Rotating Metal Shell Based On Creator, Qin Haining, Miao Xiaobin
Food and Machinery
Polygon rotating metal shell 3D model commonly used in the design of aircraft, such as underwater vehicle model. The appearance of the metal shell has irregularity, texture feature is complex, the need for real-time rendering in the process of sailing, the traditional three-dimensional modeling method for polygon the lifelike three-dimensional modeling of the rotating metal shell is not good, gloss is not strong. A polygon based on Creator rotating metal shell 3D modeling method was established. Build a polygon choose metal shell structure parameters of the system, using background difference continuous reconstruction method for 3D reconstruction algorithm is improved, the …
Design Of Sugarcane Peeling Machine Based On Motion Controller, Wu Xiaoqiang, Huang Yunzhan, Zhao Yongjie
Design Of Sugarcane Peeling Machine Based On Motion Controller, Wu Xiaoqiang, Huang Yunzhan, Zhao Yongjie
Food and Machinery
A kind of sugarcane peeling machine was designed based on motion controller, it can realize the automation of the whole processing of input, peeling and output. The sugarcane feeding and discharging take two sets of agencies. Taking the characteristics of sugarcane into consideration, the elastic sugarcane peeling tool is designed The motion controller was used as the core unit of the control system. Experimental study was carried out, and shows that the design of sugarcane peeling machine is successful with the maximum power of the prototype 1 kW, the maximum diameter 50 mm, the minimum diameter 20 mm. The maximum …