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基于SIRI和CNN的苹果隐性损伤检测方法

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农业机械学报 2024年第3期55卷 383-391页

作者：王玉伟杨玲玲朱浩杰饶元刘路侯文慧安徽农业大学工学院合肥230036 农业农村部农业传感器重点实验室合肥230036

苹果从采摘到销售过程中易发生机械损伤,需要及时剔除以避免腐烂变质。然而机械损伤早期苹果外观颜色变化不明显,通常表现为隐性损伤,检测比较困难。提出了一种基于结构光反射成像(SIRI)和卷积神经网络(CNN)的苹果隐性损伤检测方法。通... 详细信息

苹果从采摘到销售过程中易发生机械损伤,需要及时剔除以避免腐烂变质。然而机械损伤早期苹果外观颜色变化不明显,通常表现为隐性损伤,检测比较困难。提出了一种基于结构光反射成像(SIRI)和卷积神经网络(CNN)的苹果隐性损伤检测方法。通过搭建SIRI系统,采集待测苹果调制的结构光图像,再利用三相位解调法提取交流分量,增强苹果隐性损伤对比度;然后利用交流分量图像制作苹果隐性损伤数据集,并使用基于CNN的语义分割网络FCN、UNet、HRNet、pSpNet、DeepLabv3+、LRASpp和SegNet训练损伤检测模型,多组试验结果表明上述模型均能有效地检测出不同情况下的苹果隐性损伤。其中HRNet模型精确率、召回率、F1值和平均交并比较高,分别为97.96%、97.52%、97.74%和97.58%,但检测速度仅为60 f/s;pSpNet模型检测速度较快,可达到217 f/s,但其检测精度略低,精确率、召回率、F1值和平均交并比分别为97.10%、94.57%、95.82%和95.90%。

关键词：苹果隐性损伤检测结构光反射成像三相位解调法语义分割卷积神经网络

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FpGA Implementation of FFT Algorithm for OFDM Based IEEE 802.16d (Fixed WiMAX) Communications

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Journal of Electronic Science and Technology 2010年第3期8卷 193-199页

作者： K.Harikrishna T.rama rao Vladimir A.Labay Narayana Engineering College SRM University Gonzaga University

The IEEE 802.16d communication standard uses orthogonal frequency division multiplexing （OFDM）. In the widely used OFDM systems, the fast Fourier transform （FFT） and inverse fast Fourier transform pairs are used to modulate and demodulate the data constellation on the sub-carriers. In this paper, a high level implementation of a high performance FFT for OFDM modulator and demodulator is presented. The design has been coded in Verilog and targeted into Xilinx Spartan3 field programmable gate arrays. Radix-22 algorithm is proposed and used for the OFDM communication system. The design of the FFT is implemented and applied to fixed WiMAX--IEEE 802.16d communi- cation standard. The results are tabulated and the hardware parameters are compared. The proposed architecture is least in number of multipliers used and the memory size, and second to the least in number of adders used.

关键词： Index Terms-Fast Fourier transform orthogonal frequency division multiplexing radix conversion Verilog.

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大豆磷脂散对神经损伤保护作用的研究

安徽医科大学学报 2024年第5期59卷 797-802页

作者：周梦丽饶先玥方婧汪浩安徽医科大学第一附属医院肿瘤放疗科合肥230022

目的探讨大豆磷脂散对体外神经细胞、小鼠神经组织的保护作用及其机制。方法细胞实验中,细胞计数试剂盒(CCK-8)法观察不同浓度大豆磷脂散对小鼠小胶质细胞(BV2)和大鼠肾上腺髓质嗜铬瘤细胞(pC12)的细胞毒性作用;NO测定实验分析不同浓度... 详细信息

目的探讨大豆磷脂散对体外神经细胞、小鼠神经组织的保护作用及其机制。方法细胞实验中,细胞计数试剂盒(CCK-8)法观察不同浓度大豆磷脂散对小鼠小胶质细胞(BV2)和大鼠肾上腺髓质嗜铬瘤细胞(pC12)的细胞毒性作用;NO测定实验分析不同浓度大豆磷脂散对BV2细胞分泌NO水平的影响;显微镜下观察大豆磷脂散对pC12细胞突触生长活性作用;动物实验部分,利用东莨菪碱小鼠模型模拟小鼠认知功能障碍,Morris水迷宫实验测试小鼠学习记忆能力;苏木精-伊红染色(HE)观察东莨菪碱模型小鼠海马组织形态及神经细胞密度。结果大豆磷脂散在浓度为1000μg/ml以下时,对BV2细胞和pC12细胞无明显细胞毒性作用。与对照组相比,大豆磷脂散预处理的BV2细胞NO分泌量明显降低(ppC12细胞的神经突生长显著增加(ppp<0.001)。结论大豆磷脂散通过从细胞水平上减轻神经炎症、促进神经突生长,改善认知障碍小鼠学习记忆能力,减轻海马组织损伤,发挥神经保护作用。

关键词：大豆磷脂散神经炎症促神经突生长学习记忆海马损伤神经保护

Investigations on Heat Transfer Enhancement in pool Boiling with Water-CuO Nano-Fluids

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Journal of Thermal Science 2012年第2期21卷 179-183页

作者： ramakrishna N. Hegde Dr. Shrikantha S. rao R. p. Reddy Research Scholar National Institute of Technology Surathkal/ Department of Mechanical Engineering M S R I T Bangalore 560054 Assistant professor Department of Mechanical Engineering National Institute of Technology Surathkal Reva Institute of Technology Yelahanka Bangalore 560064

The main focus of the present work is to investigate Critical Heat Flux (CHF) enhancement using CuO nanofluid relative to CHF of pure water. To estimate the effect of nanoparticles on the CHF, pool boiling CHF values were measured for various volume concentrations of CuO nanofluid and compared with pure water. CHF enhancement of 130% was recorded at 0.2 % by volume of CuO nano-fluids. Surface roughness of the heater surface exposed to three measured heating cycles indicated surface modifications at different volume concentrations of nanofluid. SEM image of the heater surface revealed porous layer build up, which is thought to be the reason for CHF enhancement.

关键词： Nanofluid pool boiling CHF enhancement nano-particle.

Hepatoprotective potential of ethanolic extract of Ziziphus oenoplia(L.)Mill roots against antitubercular drugs induced hepatotoxicity in experimental models

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Asian pacific Journal of Tropical Medicine 2012年第4期5卷 283-288页

作者： Ch V rao AKS Rawat Anil p Singh Arpita Singh Neeraj Verma pharmacognosy and Ethnopharmacology Division National Botanical Research Institute(Council of Scientific and Industrial Research)Rana Pratap MargP.O.Box No.436Lucknow 226001Uttar PradeshIndia Department of pharmacology Goel Institute of Pharmacy & SciencesFaizabad Road(Near Indira Canal) Lucknow 227105Uttar PradeshIndia

Objective:To evaluate the hepatoprotective potential of ethanolic(50%) extract of Ziziphus oenoplia(L.) Mill(***) root against isoniazid(INH) and rifampicin(RIF) induced liver damage in animal ***:Five groups of six rats each were selected for the *** extract at a dose of 150 and 300 mg/kg as well as silymarin(100 mg/kg) were administered orally once daily for 21 d in INH + RIF treated *** serum levels of glutamic oxaloacetic transaminase(SGOT),glutamate pyruvate transaminase(SGpT),alkaline phosphatase (SALp),and bilirubin were estimated along with activities of superoxide dismutase,catalase, glutathione S-transferase,glutathione peroxidase,and hepatic melondialdehyde formation. Histopathological analysis was carried out to assess injury to the ***:The considerably elevated serum enzymatic activities of glutamic oxaloacetic transaminase,glutamate pyruvate transaminase,alkaline phosphatase and bilirubin due to INH + RIF treatment were restored towards norma) in a dose dependent manner after the treatment with ethanolic extract of *** ***,the decreased activities of superoxide dismutase,catalase, glutathione S-transferase and glutathione peroxidase were also restored towards normal dose *** addition,ethanolic extract also significantly prevented the elevation of hepatic melondialdehyde formation in the liver of INH + RIF intoxicated rats in a dose dependent manner. The biochemical observations were supplemented with histopathological examination of rat liver ***:The results of this study slrongly indicate that ethanolic extract of *** has a potent hepatoprotective action against INH + RIF induced hepatic damage in rats.

关键词： Ziziphus oenoplia(Rhamnaceae) Rifampicin Isoniazid Hepatotoxicity

Identification of slot discharges in rotating machine insulation system using variable frequency pD measurement

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High Voltage 2018年第3期3卷 179-186页

作者： Ramesh p.Nair Sumangala B.Vishwanath Nageshwar B.rao Cables and Diagnostics Division Central Power Research InstituteBengaluruIndia Dr.Ambedkar Institute of Technology BengaluruIndia

Slot discharge studies are very important from the insulation diagnosis *** in practice,testing of rotating machines with power frequency requires sources which are quite bulky and *** if the diagnosis is carried out at lower frequencies(portant to know whether the study at low frequencies can be considered equivalent to study at power ***,in this study,a slot discharge phenomenon occurring in a rotating machine insulation system was investigated experimentally at different frequencies(50,10,1 and 0.1 Hz).Slot discharges are known to have a distinct phase resolved partial discharge pattern for power frequency(50/60 Hz)*** distinct patterns are useful in identifying the presence of slot discharge activity in rotating *** discharges were created on a 6.6 kV mica-epoxy stator coil and the slot discharge characteristics measured at different frequencies are *** discharge measurements were repeated by varying the air gap between the insulation surface and grounded steel *** changes in slot discharge characteristics due to the increase in air gap were found similar at all *** comparison suggests that the identification of slot discharge is also possible from the partial discharge(pD)measurement at low frequencies.

关键词： steel rotating insulation

Event-driven flood management:design and computational modules

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Geo-Spatial Information Science 2016年第1期19卷 39-55页

作者： Vinod Kumar Sharma G.Srinivasa rao E.Amminedu p.V.Nagamani Abhinav Shukla K.Ram Mohan rao V.Bhanumurthy National Remote Sensing Centre ISRO HyderabadHyderabadTelanganaIndia Department of Geo-Engineering Andhra UniversityVisakhapatnamAndhra PradeshIndia

Flood management is a set of activities that have to be carried out in collaboration with multiple *** flood information with early warning generated using remote sensing satellite technologies can help the agencies to effectively manage the situation on *** environmental parameters and forecasts provided by different agencies can be analyzed and compared with historical flood events for generating probable flood event *** information(environmental parameters)provided by the agencies are heterogeneous and noncompliant to standards and distributed in *** of data from distributed resources and automation of data analysis process for flood management is a primary prerequisite for faster and efficient *** 2.0-based web services enable data creation,sharing,communication,and collaboration on *** data sharing on web 2.0 for making quality of service using open-source software for efficient flood management is a *** software architectures proposed for risk and environmental crisis management are too generic in nature and needs lot of modification for flood *** event-driven model coupled with data standardization procedures using service-oriented architecture provides an effective framework for flood *** this paper,a framework capable of collecting heterogeneous distributed flood-related information for analyzing and alerting probable flood events is *** framework has been implemented to generate automatic flood extent maps,by analyzing the distributed satellite data(as service).The automation of flood delineation process reduces the overall flood product generation ***-source web tools have been utilized in development of spatial information system to visualize and analyze the actual situation on ground facilitating overall decision-making process.

关键词： Flood management software architectures service oriented architecture(SOA) event-based methods automation heterogeneous data

Biological activities and medicinal properties of Gokhru(pedalium murex L.)

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Asian pacific Journal of Tropical Biomedicine 2012年第7期2卷 581-585页

作者： V Rajashekar E Upender rao Srinivas p Department of pharmaceutical Microbiology Vikas College of Pharmacy

Bada Gokhru(pedalium murex L.) is perhaps the most useful traditional medicinal plant in *** part of the neem tree has some medicinal property and is thus commercially *** the last five decades,apart from the chemistrv ol the pedalium murex *** progress has been achieved regarding the biological activity and medicinal applications of litis *** is now considered as a valuable source of unique natural products for development of medicines against various diseases and also for the development of industrial *** review gives a bird's eye view mainlv on the biological activities ol some of this compounds *** actions of the *** studies and plausible medicinal applications ol gokharu along with their safety evaluation.

关键词： pedalium murex pharmacological activities Anti-oxidant activities Antimicrobial activities suspending agent

Recent Advances in IOL Surgery

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眼科学报 1993年第1期9卷 19-20页

作者： p.Ranga Reddy Venkateshwara rao puligala Sarojini Devi Eye Hospital Hyderabad Andnra Pradesn IndiaSarojini Devi Eye Hospital Hyderabad Andnra Pradesn IndiaSarojini Devi Eye Hospital Hyderabad Andnra Pradesn India

Tremendous progress is made in recent time in the field of Ophthalmology especially after advent of IOL implantation surgery. Recent advance in anaesthesia/lOL, designs/IOL, quotings/cantering, techniques/advances in ... 详细信息

关键词： IOL implantation surgery lens