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A machine vision-intelligent modelling based technique for in-line bell pepper sorting

Information Processing in Agriculture 2023年第4期10卷 491-503页

作者： Khaled Mohi-Alden Mahmoud Omid Mahmoud Soltani Firouz amin nasiri Department of Agricultural Machinery Engineering Faculty of Agricultural Engineering and TechnologyUniversity of TehranIran Department of Biosystems Engineering and Soil Science University of TennesseeKnoxvilleTN 37996USA

The uniformity of appearance attributes of bell peppers is significant for consumers and food *** automate the sorting process of bell peppers and improve the packaging quality of this crop by detecting and separating the not likable low-color bell peppers,developing an appropriate sorting system would be of high importance and *** to standards and export needs,the bell pepper should be graded based on maturity levels and size to five *** research has been aimed to develop a machine vision-based system equipped with an intelligent modelling approach for in-line sorting bell peppers into desirable and undesirable samples,with the ability to predict the maturity level and the size of the desirable bell *** perceptron(MLP)artificial neural networks(ANNs)as the nonlinear modelswere designed for that *** modelswere trained and evaluated through five-fold cross-validation *** optimum MLP classifier was compared with a linear discriminant analysis(LDA)*** results showed that the MLP outperforms the LDA *** processing time to classify each captured image was estimated as 0.2 s/sample,which is fast enough for in-line ***,the optimum MLP model was integrated with a machine vision-based sorting machine,and the developed system was evaluated in the in-line *** performance parameters,including accuracy,precision,sensitivity,and specificity,were 93.2%,86.4%,84%,and 95.7%,*** total sorting rate of the bell pepper was also measured as approximately 3000 samples/h.

关键词： Bell pepper Sorting Image processing Machine vision Multilayer perceptron Linear discriminant analysis

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单乙醇胺对水基钻井液体系中淀粉热稳定性的影响

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石油勘探与开发 2018年第1期45卷 157-160页

作者： nasiri Alireza NIK Mohammad amin Sharif HEIDARI Hamidreza VALIZADEH Majid Research Institute of Petroleum Industry Tehran Iran School of Mining Engineering College of Engineering University of Tehran Tehran Iran Department of Chemical and Petroleum Engineering Sharif University of Technology Tehran Iran

为了提高水基钻井液体系中淀粉的热稳定性,在其中添加单乙醇胺,并对其效果进行了室内实验研究。研究表明,单乙醇胺的存在使钻井液的表观黏度、塑性黏度、动切力、静切力等提高,且显著降低了钻井液的滤失速率、减小了泥饼厚度。通过与淀... 详细信息

为了提高水基钻井液体系中淀粉的热稳定性,在其中添加单乙醇胺,并对其效果进行了室内实验研究。研究表明,单乙醇胺的存在使钻井液的表观黏度、塑性黏度、动切力、静切力等提高,且显著降低了钻井液的滤失速率、减小了泥饼厚度。通过与淀粉聚合物建立氢键,单乙醇胺的存在可以避免高温下淀粉的水解,提高淀粉的热稳定性。淀粉作为天然聚合物可以提高钻井液流变性能、降低滤失量,但其发挥作用的最高温度仅为121℃,而单乙醇胺会使淀粉的耐温提高至160℃。单乙醇胺存在最佳浓度,高于最佳浓度时,其功效会下降。

关键词：单乙醇胺淀粉钻井液添加剂水基钻井液热稳定性

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Efficacy and safety of Amla(Phyllanthus emblica L.) in non-erosive reflux disease:a double-blind,randomized,placebo-controlled clinical trial

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Journal of Integrative Medicine 2018年第2期16卷 126-131页

作者： Shahnaz Karkon Varnosfaderani Fataneh Hashem-Dabaghian Gholamreza amin Mahbubeh Bozorgi Ghazaleh Heydarirad Esmaeil Nazem Mohsen nasiri Toosi Seyed Hamdollah Mosavat Department of Traditional Medicine School of Traditional MedicineTehran University of Medical Sciences Research Institute for Islamic and Complementary Medicine Iran University of Medical Sciences Department of Traditional Pharmacy Faculty of Traditional MedicineTehran University of Medical Sciences Department of Traditional Medicine School of Traditional MedicineShahid Beheshti University of Medical Sciences Department of Gastroenterology Imam Khomeini Hospital Tehran University of Medical Sciences Research Centre for Traditional Medicine and History of Medicine Shiraz University of Medical Sciences

Background： Gastroesophageal reflux disease （GERD） is one of the most common gastrointestinal com- plaints. GERD, caused by the reflux of stomach contents into the esophagus, leads to troublesome symptoms such as heartburn and regurgitation. It is classified into two types： erosive esophagitis, characterized by visible esophageal mucosa erosion in endoscopy, and non-erosive reflux disease （NERD）. GERD is a chronic and recurrent disease that impairs the quality of life and imposes socioeco- nomic and therapeutic burdens to both patients and society. Objective： Due to the failure of the conventional treatments for GERD and to the traditional use of Amla （Phyllanthus emblica L.）, in addition to beneficial effects shown in recent studies, we evaluated the safety and efficacy of Amla tablet for improvement of symptoms of patients with NERD. Design, setting, participants and interventions： We designed a double-arm, randomized, double-blind, placebo-controlled clinical trial. Sixty-eight patients who had classic symptoms of GERD （heartburn, regurgitation and epigastralgia） for at least three months before the start of the trial were randomized in two parallel groups. Patients in the Amla group received two 500 mg Amla tablets twice a day, after meals, for 4 weeks. In the control group, patients received placebo tablets similar to the Amla prescription. Main outcome measures： The patients were visited at baseline, and at the end of the 2nd and 4th weeks of intervention; their symptoms were measured on a frequency and severity scale for the symptoms of NERD, according to the quality of life in reflux-associated disease questionnaire. Results： Frequencies of heartburn and regurgitation in both groups of the study were significantly reduced after intervention （P 〈 0.001）. Repeated measures logistic regression analysis showed that, in the Amla group, there was a more significant reduction in regurgitation frequency, heartburn frequency, regurgita- tion severity and heartburn se

关键词： Gastroesophageal reflux Non-erosive reflux disease Amla Phyllanthus emblica Phytotherapy Randomized clinical trials

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