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WOS Indexed (2023)
AMA, Agricultural Mechanization in Asia, Africa and Latin America
AMA, Agricultural Mechanization in Asia, Africa and Latin America (AMA) (issn: 00845841) is a peer reviewed journal first published online after indexing scopus in 1982. AMA is published by Farm Machinery Industrial Research Corp and Shin-Norinsha Co. AMA publishes every subjects of general engineering and agricultural engineering. Shenyang Jianzhu Daxue Xuebao (Ziran Kexue Ban)/Journal of Shenyang Jianzhu University (Natural Science) General Medicine (ISSN:1311-1817) Chinese Journal of Evidence-Based Medicine Zhongguo yi liao qi xie za zhi = Chinese journal of medical instrumentation Lizi Jiaohuan Yu Xifu/Ion Exchange and Adsorption
04 Dec 2023 (Vol - 54 , Issue- 12 )
31 Dec 2023 (Vol - 54 , Issue 12 )
Aim and Scope :
AMA, Agricultural Mechanization in Asia, Africa and Latin America
AMA, Agricultural Mechanization in Asia, Africa and Latin America (ISSN: 00845841) is a peer-reviewed journal. The journal covers Agricultural and Biological Sciences and all sort of engineering topic. the journal's scopes are in the following fields but not limited to:
Agricultural and Biological Sciences
Electrical Engineering and Telecommunication
Electronic Engineering
Computer Science & Engineering
Civil and architectural engineering
Mechanical and Materials Engineering
Transportation Engineering
Industrial Engineering
Industrial and Commercial Design
Information Engineering
Chemical Engineering
Food Engineering
Modeling and Analysis for the Rack Bar in Horizontal Broching Machine
In this study, the design of broaching machine for producing rack bars for automobile steering systems. Recently, auto parts are becoming lighter to improve energy efficiency. In addition, the rigidity and precision of the rack bar is important as it becomes more versatile and the importance of connecting parts such as the motor and the reduction gear increases. In addition, production equipment for rack bars must be developed. In this study, a design review of a horizontal broaching machine for rack bar production was conducted. First, the broaching tool was designed. The second was to determine the hydraulic pressure and model a horizontal broaching machine. Afterwards, the boundary conditions were set and finite element analysis was performed. As a result of analysis, vibration is not a problem. However, the deformation amount was larger than the error required by the rack bar, and the design was changed. The amount of deformation was small when comparing the amount of deformation before and after design. In conclusion, accurate broaching tool, hydraulic design and finite element analysis can predict the precision of rack bar production.
Assessment of Machine Ability on the Bearing Steel for Semiconductor Wafer using Ultrasonic Machine
The ultrasonic machining is categorized into non-traditional machining process. The machining process using ultrasonic usually applied for brittle materials, but it also capable applied into ductile materials. Wear is the phenomenon in the metal cutting process, two or more surfaces contact definitely causing the worn. This study is to figure out the characteristic the tool life in the ultrasonic machining process. The characteristic of friction and wear of needle pin on disk under the abrasive slurry was observed as comparison. The condition is look like in ultrasonic hole machining, which is using abrasive slurry. 30 mm length of SUS 304 tube with outer Ø 0.5 mm and inner Ø 0.3 mm was used. The other kind of type B SWRS wire pin is used too. 13 gram of Silicon Carbide (SiC) powder dissolved in the 50 gr of water act as lubricant. is the tool life equation for SWRS pin and for SUS 304 pin. During the test, the hydrodynamic lubrication regime was fully developed side by side with the increasing of rotational velocity. The lowest friction coefficient of SWRS pin was achieved at 75 rpm, which the value is 0.00633 and for SUS 304 pin is 0.0064 at 100 rpm. The result of this experiment was reported and discussed.
Studies on standardization of pruning intensities and concentrations of chemical defoliants in improving yield and fruit quality of pomegranate (Punica granatum L.) cv. Bhagwa
An experiment with an objective to standardize the concentrations of chemical defoliants pruning intensities for maximum yield and fruit quality of pomegranate (Punica granatum L.) cv. Bhagwa was conducted during 2020-21 & 2021-22 at pomegranate orchard under hi-tech horticulture, College of Agriculture, Khandwa (M.P.). The experiment was laid out in Randomized Block Design with three replications with pomegranate plants planted at a distance of 3m X 2.5 m. The experiment comprised of 16 treatments consisting of different levels of chemical defoliants and pruning intensities. Number of fruits per plant, Fruit weight (g), Fruit volume (ml), Fruit yield per plant (kg), Fruit Yield per hectare (q) also showed significant effect of the treatments. Maximum number of fruits per plant (63.50), Maximum fruit weight (164.17 g), Maximum fruit volume (287.50 ml), Fruit yield per plant and fruit yield per hectare (10.42 kg and 173.65 q) was recorded under the treatment T15. Physico-chemical or quality parameters like Number of arils per fruit, Aril: rind ratio, Juice (%), TSS (ºBrix), Titratable acidity (%), Total sugar (%), TSS: Acid ratio, Reducing Sugar (%), Non-reducing Sugar (%) varied significantly with the treatments. Maximum number of arils per fruit (679.17), Maximum Aril: rind ratio (2.44), maximum juice percentage (56.33), Maximum TSS (14.59 °Brix), Minimum titratable acidity (0.31%), Maximum total sugar (6.38%), Maximum TSS: Acid ratio (47.74), Maximum reducing (4.76%) and non-reducing sugar (1.95%) was recorded under the treatment T15An experiment with an objective to standardize the concentrations of chemical defoliants pruning intensities for maximum yield and fruit quality of pomegranate (Punica granatum L.) cv. Bhagwa was conducted during 2020-21 & 2021-22 at pomegranate orchard under hi-tech horticulture, College of Agriculture, Khandwa (M.P.). The experiment was laid out in Randomized Block Design with three replications with pomegranate plants planted at a distance of 3m X 2.5 m. The experiment comprised of 16 treatments consisting of different levels of chemical defoliants and pruning intensities. Number of fruits per plant, Fruit weight (g), Fruit volume (ml), Fruit yield per plant (kg), Fruit Yield per hectare (q) also showed significant effect of the treatments. Maximum number of fruits per plant (63.50), Maximum fruit weight (164.17 g), Maximum fruit volume (287.50 ml), Fruit yield per plant and fruit yield per hectare (10.42 kg and 173.65 q) was recorded under the treatment T15. Physico-chemical or quality parameters like Number of arils per fruit, Aril: rind ratio, Juice (%), TSS (ºBrix), Titratable acidity (%), Total sugar (%), TSS: Acid ratio, Reducing Sugar (%), Non-reducing Sugar (%) varied significantly with the treatments. Maximum number of arils per fruit (679.17), Maximum Aril: rind ratio (2.44), maximum juice percentage (56.33), Maximum TSS (14.59 °Brix), Minimum titratable acidity (0.31%), Maximum total sugar (6.38%), Maximum TSS: Acid ratio (47.74), Maximum reducing (4.76%) and non-reducing sugar (1.95%) was recorded under the treatment T15.
Induction of Resistance in Potato Against Black Scurf Disease Caused by Rhizoctonia solani Using Salicylic Acid, Boric Acid, Calcium Chloride, Hydrogen Peroxide and Five Other Inducer- A Comparative Evaluation
A major constraint in the production of potato tubers is its vulnerability to various soil borne, air borne and tuber-borne diseases, including late blight (Phytophthora infestans), early blight (Alternaria solani), wart disease of potato (Synchytrium endobioticum), common scab (Streptomyces scabies), powdery scab (Spongospora subterranea), dry rot (Fusarium spp.), Sclerotium wilt (Sclerotium rolfsii), Verticillium wilt (Verticillium alboatrum) and black scurf (Rhizoctonia solani). Among these, black scurf induced by Rhizoctonia solani is prevalent throughout the state, resulting in significant yield losses. Induction of resistance in potato against black scurf disease was studied by treating the highly susceptible potato tuber to black scurf disease using the defense activator salicylic acid, hydrogen peroxide (H2O2), Boric acid and calcium chloride (CaCl2) each @0.25 g per litre were efficient in managing the disease incidence by giving 59.54 and 60.18% protection from disease incidence and 78.96 and 78.16% reduction in disease index respectively, against black scurf disease. Optimization of time gap between the spray of inducer and inoculation with Rhizoctonia pathogen identified gap of 11 days for building of maximum resistance. Inducer treatment not only offered crop protection against but also increased the vegetative and reproductive growth parameters and enhances the yield of tubers. Among the inducers used, salicylic acid provide more protection than boric acid, calcium chloride and hydrogen peroxide but boric acid and salicylic acid are statistically at par with each other. Crop raised from salicylic acid and calcium chloride showed more pronounced vegetative and reproductive growth parameter as compared to other inducer.
Cutting Management and Nitrogen application influences Fodder Quality and Productivity of Dual Purpose Oat (Avena sativa L.)
A field experiment was conducted during Rabi 2016-17 at Instructional Farm, Rajasthan College of Agriculture, Udaipur. The objectives were to find out proper cutting management and nitrogen level for fodder quality and productivity of dual purpose oat. The experiment comprising combinations of five cuttings and four nitrogen level. Thus, 20 treatments; all were evaluated in split-plot design of single cut and randomized block design of double cut with three replications keeping cutting management in main and nitrogen in sub plots. The results of experiment revealed that cutting management at first and second cutting gave significantly higher plant height, dry matter accumulation, number of tillers, leaf stem ratio, green and dry fodder yield and crude fibre at C3 treatment and C5 treatment, respectively. Application of 30 kg N ha-1 after first cutting recorded significantly higher plant height, dry matter accumulation, leaf stem ratio, green (23.5 t ha-1) and dry fodder yield (11.7 t ha-1), production efficiency and chlorophyll content. Total green (43.24 t ha-1) and dry fodder yield (12.58 t ha-1) were recorded maximum with the application of 30 kg N ha-1 which was at par with 20 kg N ha-1. The application of 30 kg N ha-1 after first cutting recorded maximum ash content and crude protein which was at par with application of 10 and 20 kg N ha-1 after first cutting. Crude fibre per cent was maximum in control that at par with 10 and 20 kg N ha-1.