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Development of a metering mechanism with serial robotic arm for handling paper pot seedlings in a vegetable transplanter

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Artificial Intelligence in Agriculture 2021年第1期5卷 52-63页

作者： vikas paradkar Hifjur Raheman Rahul K. Agricultural and Food Engineering Department Indian Institute of Technology KharagpurIndia

This paper describes the development of an automated metering mechanism for vegetable *** consisted of a 3-DOF serial robotic arm and an automatic feeding *** robotic arm was developed to pick and drop tomato seedlings raised in biodegradable paper *** volume of each pot was 50 cm^(3)(3.5 cmdiameter and 5.2 cmheight)with a maximumtotalweight of 47 g including potmix and *** type feeding conveyorwas developed to convey the pot seedlings to a predefined positionwhere the robotic armcould pick up these seedlings one by ***(Light Dependent Resistor)-LED(Light Emitting Diode)sensing unit was used to perform the intermittent movement of the *** developed system was evaluated under both laboratory and field *** robotic arm was able to pick and drop 20 seedlings per minute and its effective cycle time per handling one seedling was varying from 2.5 to 3.1 *** consumption of the conveyor of the developed system and the robotic arm was 18 W and 16 W,*** conveying,metering and overall efficiency of the developed metering mechanism under laboratory condition were 96.83%,95.91%and 92.86%,respectively as compared to 94.7%,93.28%and 88.33%,under field *** developed robotic armbasedmeteringmechanismwas simple,light inweight and effectively handled the pot seedlings without damage and would thus help in mechanizing transplanting of vegetable seedlings.

关键词： Tomato seedling transplanting Feeding conveyor Robotic transplantation Seedling sensing system

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Design of a 4 DOF parallel robot arm and the firmware implementation on embedded system to transplant pot seedlings

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Artificial Intelligence in Agriculture 2020年第1期4卷 172-183页

作者： Rahul K Hifjur Raheman vikas paradkar Agricultural&Food Engineering Department Indian Institute of Technology KharagpurIndia

This paper presents a firmware design and its implementation on a real time embedded system for driving a 4 DOF parallel robot *** firmware primarily comprised of two components to produce motion of the robot arm:a)generation of continuous position coordinates and b)generation of actuating *** two componentswere processed in two different microcontrollerswith a common communication *** position generation algorithm produced and transmitted continuous position data to the motion generation algorithm in the form of G-code strings by reading the input positionswhichwere previously stored by the user in EEPROMmemory of the *** receipt of a handshake signal synchronized the data transmission between these components through a communication *** LCD display and keypad were used as human-machine interface(HMI)to communicate with the user to set the robot target *** mechanical structure of the robot arm comprised of multiple links which were actuated by *** workspace boundary were sensed by limit *** kinematic equations represented the gripper position for the corresponding input joint angles.A microcontroller was used to compute kinematic equations of the robot arm with the help of motion generation algorithm to generate actuation signals for the simultaneous movement of robot *** kinematic equations were solved with the dual-core capability of the microcontroller using real time operating system(RTOS),which made the computation faster with an average computation time of 198μs per *** developed firmware was implemented and tested on a 4 DOF parallel manipulator using embedded microcontrollers for continuous pickup and place of the paper pot seedlings for automating the metering of pot *** cycle time taken for pickup and dropping of each seedling was 3.5 s with a success rate of 93.3%.

关键词： Robot firmware Parallel robot arm Automation SoC microcontrollers,pot seedlings

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Evaluating bioactivity and bioaccessibility properties of the propolis extract prepared with L-lactic acid: An alternative solvent to ethanol for propolis extraction

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FOOD BIOSCIENCE 2023年第3期53卷 2351-2358页

作者： Atayoglu, Ali Timucin Atik, Didem Sozeri Boluk, Esra Gurbuz, Basak Ceylan, Fatma Duygu Capanoglu, Esra Atayolu, Rumeysa paradkar, Anant Fearnley, James Palabiyik, Ibrahim Istanbul Medipol Univ Tradit & Complementary Med Dept Istanbul Turkiye Tekirdag Namik Kemal Univ Food Engn Dept Tekirdag Turkiye Istanbul Tech Univ Food Engn Dept Istanbul Turkiye Istanbul Medipol Univ Nutr & Dietet Dept Istanbul Turkiye Univ Bradford Ctr Pharmaceut Engn Sci Sch Pharm Bradford W Yorkshire England Apiceut Res Ctr Whitby N Yorkshire England

Ethanol readily solubilizes the active components of propolis. Due to certain disadvantages of ethanolic extracts, developing new non-ethanolic extraction methods is highly desirable. This study aimed to determine the content of phenolic compounds and antioxidant activity of propolis by using lactic acid extraction compared to ethanol. Various concentrations of ethanol and lactic acid were utilized to produce extracts, and an in vitro digestion procedure was applied to the extracts to compare the bioaccessibility of phenolic compounds by using LC-MS/MS in extracts and HPLC-DAD in digested samples. The compounds detected in the lactic acid-based propolis so-lution had similar values to those in the ethanol solution at a propolis concentration of 10%. The propolis-lactic acid solution had a significantly higher antioxidant activity against DPPH radical than the one prepared with ethanol at the same concentration (p < 0.05). Chrysin and naringenin were found as the most abundant phenolic compounds in the initial samples during in vitro digestion experiments. Pinocembrin was the most bioaccessible component among the dialyzed IN fractions of ethanol and lactic acid-based solutions, whereas some compounds were not detected. The results suggest that lactic acid may be used as an alternative to ethanol for propolis extraction.

关键词： Antioxidant Extraction Lactic acid Propolis Phenolics

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Virology at the Lorne Infection and Immunity Conference 2019

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Virologica Sinica 2019年第4期34卷 474-474页

作者： Sarah L.Londrigan Gregor Ebert Prasad N.paradkar Department of Microbiology and Immunology The University of Melbourne at the Peter Doherty Institute for Infection and ImmunityMelbourneVIC 3000Australia Infection and Immunity Division The Walter and Eliza Hall Institute of Medical ResearchMelbourneVICAustralia CSIRO Health and Biosecurity Australian Animal Health LaboratoryGeelongVIC 3220Australia

The Lome Infection and Immunity Conference is one of five scientific meetings held during each month of February at the Cumberland resort in the picturesque seaside town of Lome,on the Great Ocean Road in Victoria(Australia).The specific aim of the meeting is to bring together basic,clinical and translational researchers-those who examine microbes and their impact on the innate or adaptive immune response,researchers who study the mechanisms that regulate immune responses,and those who apply this knowledge to preventing and treating infectious and in”ammatory *** average number of attendees is 220,with registrants appreciative of the welcoming and relaxed atmosphere(Fig.1).

关键词： Virology Lome Infection Immunity Conference

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Investigation of the nutraceutical potential of monofloral Indian mustard bee pollen

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Journal of Integrative Medicine 2014年第4期12卷 379-389页

作者： Sameer S.Ketkar Atul S.Rathore Sathiyanarayanan Lohidasan Lakshmi Rao Anant R.paradkar Kakasaheb R.Mahadik Centre for Advanced Research in Pharmaceutical Sciences Poona College of Pharmacy Bharati Vidyapeeth University Central Bee Research and Training Institute Centre for Pharmaceutical Engineering Sciences University of Bradford

OBJECTIVE： This study was designed to investigate the nutraceutical potential of monofloral Indian mustard bee pollen （MIMBP）. METHODS： The nutritional value of MIMBP was examined in terms of proteins, fats, carbohydrates, and energy value. Its chemical composition in terms of total polyphenol and flavonoid content was determined. MIMBP was screened for free flavonoid aglycones by developing and validating a high-performance liquid chromatography-photo diode array （HPLC-PDA） method. MIMBP was analyzed for in vitro antioxidant effect in terms of 2,2-diphenyl-l-picrylhydrazyl （DPPH） radical-scavenging activity. RESULTS： MIMBP was found to be comprised of proteins （（182.2±5.9） g/kg）, fats （（137.7±6.8） g/kg） and carbohydrates （（560.6±17.4） g/kg）, which result in its high energy value （（17 616.7±78.6） kJ/kg）. MIMBP was found to contain polyphenols （（18 286.1±374.0） mg gallic acid equivalent/kg） and flavonoids （（1 223.5±53.1） mg quercetin equivalent/kg）. The HPLC-PDA analysis revealed the presence of kaempferol （（65.4±0.5） mg/kg） and quercefin （（51.4±0.4） mg/kg） in MIMBP, which can be used as markers for determining the quality of bee pollen. The MIMBP extract showed DPPH free radical-scavenging activity with a half maximal inhibitory concentration of 54.79 μg/mL. CONCLUSION： The MIMBP was found to be a rich source of nutrients providing high caloric value, which makes it a candidate for a potential nutraceutical agent. The study also illustrated the high antioxidant content of MIMBP, especially in the principle polyphenols and flavonoids, which suggests its potential role in the prevention of free radical-implicated diseases. The DPPH-scavenging effect of MIMBP further confirmed its antioxidant potential. Additionally, we developed a simple, specific and accurate HPLC-PDA method for the identification and quantification of free flavonoid aglycones. This can be applied in future screenings of the quality of pollen collected by honeybees.

关键词： dietary supplements bee pollen flavonoids mustard plants

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女性急性冠状动脉综合征患者的特征、治疗和结局的时间趋势分析

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中华高血压杂志 2020年第2期28卷 197-197页

作者：刘青(译) 刘莉(摘、审校) Porter A paradkar A Goldenberg I Shlomo N Cohen T Kornowski R Eisen A 不详

心血管病仍是女性死亡的主要原因。尽管急性冠状动脉综合征(acute coronary syndrome,ACS)患者的管理有所改善,但患有ACS的女性仍面临很高的风险。研究者对参加2000-2016年每两年一次ACS以色列前瞻性调查的ACS女性患者的管理和结局进行... 详细信息

心血管病仍是女性死亡的主要原因。尽管急性冠状动脉综合征(acute coronary syndrome,ACS)患者的管理有所改善,但患有ACS的女性仍面临很高的风险。研究者对参加2000-2016年每两年一次ACS以色列前瞻性调查的ACS女性患者的管理和结局进行时间依赖性分析,调查分为3个时间段(2000-2004、2006-2010和2013-2016年),观察结果包括30d的主要不良心脏事件(死亡、心肌梗死、脑卒中、不稳定型心绞痛、支架血栓形成、紧急血运重建)和1年死亡率。结果显示,共3518例女性因ACS入院。各时段的年龄相似。

关键词：前瞻性调查主要不良心脏事件血运重建心血管病不稳定型心绞痛急性冠状动脉综合征依赖性分析时间趋势分析

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