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.
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:Azerbaijan Medical Journal Gongcheng Kexue Yu Jishu/Advanced Engineering Science
Nha Trang bay is located in the south-central waters of Vietnam and considered as part of the most diverse region within the western South China Sea. According to oceanographic studies, this coastal area is not influenced by cold water mass from the north in winter but subjected to summer upwelling. Specimens for the study on coral spawning of four species were collected at Hon Mieu Island (12°11'37.31"N and 109°14'1.82"E) and 2 nearby sites during 2016 – 2019. Mature eggs of branching Acropora florida and A. robusta were observed inside coral colonies in the time before to after the full moon of late March to early April in 2018 and March in 2019. Meanwhile, the tabulate coral of A. hyacinthus spawned in the period after the full moon of March 2019. The total time of spawning periods of the three Acropora species is around 10 days. The spawning time of the massive coral of Dipsastraea palida was one month later than that of branching Acropora corals, during the time before and after the full moon of late April to early May in 2018 and April 2019 with the mature period around a half month. Observation on the ratio of mature (pigmented) eggs by time showed possible multispecific spawning of some Acropora corals. Further analysis on spawning periods of 3 Acropora species and one faviid species indicated that spawning of corals in Nha Trang bay could occur for a long time and at different periods from March to May but not concentrated in short period (1 to 3 days) in the same time as occurrences of mass synchronous spawning of corals in many areas in the Indo – Pacific.
An experiment on effect of plant geometry and weed management on yield and quality parameters of fennel was carried out at Agronomy Farm, Jobner, Jaipur, Rajasthan during the winter (rabi) seasons of 2016–17 and 2017–18. The experiment was laid out in split plot design with 3 replications, consisting of 24 treatments, namely, 4 plant geometries (50 x 20 cm, 50 x 25 cm, 60 x 15 cm and 60 x 20 cm) in main plot and 6 weed management measures (weedy check, two HW at 25 and 50 DAS, pendimethalin @ 0.75 kg/ha (PE), oxadiargyl @ 75 g/ha (PE), pendimethalin @ 0.75 kg/ha (PE) + one HW at 30 DAS and oxadiargyl @ 75 g/ha (PE) + one HW at 30 DAS) in sub plots. Pooled results showed that treatment with plant geometry 60 x 20 cm recorded significantly maximum seed, straw and biological yields and quality parameters viz. chlorophyll content at 75 DAS (1.87 mg/g), protein content (9.21%), oil content (1.541%) and oil yield (34.42 kg/ha) of fennel. Between weed management practices, HW twice at 25 and 50 DAS significantly improved the yield of crop and quality parameters viz; chlorophyll content at 75 DAS (1.85 mg/g), protein content (9.06%), oil content (1.471%) and oil yield (33.04 kg/ha) and proved superior to all the above parameters over weedy check and pre emergence with the application of oxadiargyl @ 75 g/ha. Application of pendimethalin @ 0.75 kg/ha (PE) + one hand weeding at 30 DAS, oxadiargyl @ 75 g/ha (PE) + one hand weeding at 30 DAS and pendimethalin @ 0.75 kg/ha (PE) 0.75 kg/ha were found the most remunerative and equally effective treatment with two HW treatment in all the above parameters.
At this time, many questions are asked about the best way to implement Lean Management effectively in a company. The Lean method, number one in the automotive world, an object of adaptation of the continuous processes to changes in customer demand or context. It is applicable to the information system. It has even become essential, since Lean improves the functioning of all the IT activities in which it has been tested, in particular BPM which helps structure the business processes of the company. Business Process Management (BPM) and Lean Management help companies streamline their business processes across applications and organizational boundaries. To more easily define how to transpose methods from the industrial world to BPM, it is therefore important to follow an effective implementation model and frameworks. To get there, in addition to the advanced tools that can: determine, develop, deploy, administer, manage and improve the process and skills, this article presents the implementation models and frameworks adapted to the situation of each business.
Current harmonics is one of the most common events that affect power quality in the distribution system. Parallel active filter (PAF) is the best solution to minimize harmonic distortion, but its effectiveness depends on how quickly and accurately its control algorithms can perform. In order to improve power system quality and mitigate the harmonics, this paper proposes the parallel active filter using a proportional resonant (PR) current control. Compared with PI controllers, the complexity of PR controllers is reduced considerably, combined with its good performance. Simulations were carried out using MATLAB/Simulink software to validate the performance of the PAF connected to a nonlinear load. The simulation results showed the effectiveness of proposed PR current control and the harmonic compensators to reduce the harmonics in the grid current. This reduction in harmonics is compliant to the IEEE 519 standard recommendations on harmonics levels.
The current article aims to determine the optimum partial gear ratios of three-stage bevel helical gearboxes which can minimize the gearbox cost. Twelve main process parameters are adopted to examine their effects on u1 and u2. A plan of simulation experiment is conducted to serve for finding regression model. It is revealed that the total gearbox ratio parameter, ug, has the biggest effect on both response u1 and u2 when compared to those of others. Moreover, the predicted values given by regression model are significantly consisted of experiments.