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Methane, Nitrous Oxide and Ammonia generation in full-scale swine wastewater purification facilities

Frontiers of Environmental Science & Engineering 2017年第3期11卷 115-122页

作者： Takashi Osada Makoto Shiraishi teruaki hasegawa Hirofumi Kawahara National Agriculture and Food Research Organization Tsukuba Ibaraki 305-0005 Japan Okayama Prefectural Center for Animal Husbandry Research Misaki Okayama 709-3401 Japan Chiba Prefectural Livestock Research Center Yachimata Chiba 289-1113 Japan Saga Prefectural Higashimastuura Agricultural Development and Extension Center Karatsu Saga 847-0861 Japan

The activated sludge process to remove nitrogen and biochemical oxygen demand （BOD） is reportedly cost-effective for swine wastewater treatment, and it use has thus increased in pig farming. Nitrous oxide （N20） is generated on farms as an intermediate product in nitrification and denitrification, and methane （CH4） is also generated from organic degradation under anaerobic conditions by microorganisms in manure or wastewater. This study was carried out at five activated sludge treatment facilities across Japan between August 2014 and January 2015. Measurements were conducted over several weeks at wastewater purification facilities for swine farms： two in Chiba prefecture （East Japan）, two in Okayama prefecture （West Japan）, and one in Saga （Southern Japan）. Taking several environmental fluctuations into account, we collected measurement data continuously day and night, during both high-temperature and low-temperature periods. The results indicated that CH4 and N20 emission factors were 0.91% （kgCHa·kg volatile solids^-1） and 2.87% （g N2O-N·kg total N^-1）, respectively. Ammonia emissions were negligible in all of the measurements from the wastewater facilities. The N20 emission factor calculated under this experiment was low compared to our previous finding （5.0%; g N2O-N·kg N^-1） in a laboratory experiment. In contrast, the CH4 emission factor calculated herein was rather high compared to the laboratory measurements. There was great variation in daily GHG emission factors measured in the actual wastewater treatment facilities. In particular, the N2O emission rate was affected by several environmental conditions at each facility location, as well as by the management of the wastewater treatment.

关键词： Manure Greenhouse gas Denitrification BOD/NNitrous oxide Methane

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Complex-Valued Neural Networks:A Comprehensive Survey

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IEEE/CAA Journal of Automatica Sinica 2022年第8期9卷 1406-1426页

作者： ChiYan Lee Hideyuki hasegawa Shangce Gao Faculty of Engineering University of ToyamaToyama 930-8555Japan

Complex-valued neural networks(CVNNs)have shown their excellent efficiency compared to their real counterparts in speech enhancement,image and signal *** throughout the years have made many efforts to improve the learning algorithms and activation functions of *** CVNNs have proven to have better performance in handling the naturally complex-valued data and signals,this area of study will grow and expect the arrival of some effective improvements in the ***,there exists an obvious reason to provide a comprehensive survey paper that systematically collects and categorizes the advancement of *** this paper,we discuss and summarize the recent advances based on their learning algorithms,activation functions,which is the most challenging part of building a CVNN,and ***,we outline the structure and applications of complex-valued convolutional,residual and recurrent neural ***,we also present some challenges and future research directions to facilitate the exploration of the ability of CVNNs.

关键词： Complex activation function complex backpropagation algorithm complex-valued learning algorithm complex-valued neural network deep learning

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Reproducibility and Validity of a Chinese Food Frequency Questionnaire

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Biomedical and Environmental Sciences 2010年第S1期23卷 1-38页

作者： Water WILLETT Kyoko hasegawa Department of Nutrition Harvard School of Public Health Kagawa Nutrition University

Objectives This study was design to develop a semi-quantitative Chinese Food Frequency Questionnaire （FFQ） and to conduct a validation study for the questionnaire. Methods Based on the survey experience in recent years, a new Chinese food frequency questionnaire （FFQ） with 149 items in 17 food categories was developed. A validation study on this new FFQ was conducted in Jiangsu and Beijing of China between 1999 and 2001. The period of study covered 1 year and the FFQ was validated by comparing with data obtained by a six repeated 24-hour recalls for 3 consecutive days, or a totally 18-day 24- hour recall throughout the year. A total of 271 healthy adult subjects were enrolled in the study. Food and nutrient intakes measured by the 18-day dietary recalls and food frequency questionnaires （FFQs） were computed in the National Institute for Nutrition and Food Safety, China CDC using the existing nutrition database. The average daily intake of foods and nutrients over the 18-day recall was used to compare with FFQ1 and FFQ2, which was conducted at the beginning and the end of the year, respectively. All statistical analyses were carried out using SAS software version 6.12.

关键词： FFQ Reproducibility and Validity of a Chinese Food Frequency Questionnaire

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A technique utilizing chemical reagents for direct measurement of temperature at a local area and its engineering applications

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Acta Mechanica Sinica 2009年第2期25卷 149-160页

作者： M.Saka T.hasegawa Department of Nanomechanics Tohoku University

Temperature is one of the physical quantifies through which quantitative evaluation of the safety and reliability of industrial products can be achieved, and this has been used widely in practice. Under any environmental condifion, regardless of the size of the object to be inspected, accurate and reliable measurement of temperature is of great practical importance. This review article presents a simple and direct method of temperature measurement, that can be applied to the local areas with difficulty in measuring the temperature by using normal thermometers. In the present article, two different application examples are demonstrated. One addresses the study of the electromigration of solders which are used as bonding metals in electronic devices （micro-structures）. The application of the method to the shaft of a motor used in heavy industrial fields is explained as the second.

关键词： Temperature measurement Chemicalreagents Melting point Temperature distribution

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Retinal ganglion cell protection by hop-flower extract as a novel neuroprotective strategy for glaucoma

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Neural Regeneration Research 2022年第6期17卷 1267-1268页

作者： Tomoko hasegawa Hanako Ohashi Ikeda Department of Ophthalmology and Visual Sciences Kyoto University Graduate School of MedicineKyotoJapan Research Fellow of Japan Society for the Promotion of Science TokyoJapan

In glaucoma,a leading cause of blindness,retinal ganglion cells are progressively *** pressure reduction is the only established treatment for glaucoma(Collaborative Normal-Tension Glaucoma Study Group,1998;Vass et al.,2007).However,in some cases,visual field loss progresses despite sufficiently reduced intraocular pressure(Collaborative Normal-Tension Glaucoma Study Group,1998;Killer and Pircher,2018).While intraocular pressure and age are known risk factors for glaucoma(Ernest et al.,2013),the underlying mechanisms of glaucoma progression are not fully understood.

关键词： glaucoma al. protective

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NUMERICAL SIMULATION ON COMPRESSIBLE TURBULENCE BY SPECTRAL METHOD

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Acta Mechanica Sinica 1998年第3期14卷 193-207页

作者：王健平 Tatsuya hasegawa State Key Laboratory for Turbulence Research Department of Mechanics and Engineering SciencePeking UniversityBeijing 100871China Department of Mechanical Engineering Nagoya Institute of TechnologyGokiso-choShowa-kuNagoya 466Japan

The numerical and physical issues of simulations on compressible turbulence are reviewed in the present paper. An outline of the global spectral methods and the progress of recent local spectral methods are illustrated. Several typical subjects in this field are studied, including homogeneous isotropic turbulence, autoignition in premixed turbulence, interaction between flames and turbulence, and shock wave in turbulence. The results of the numerical simulations are discussed, enabling us to discover and to understand the physical phenomena which have not been solved by experiments.

关键词： compressible turbulence turbulent flame spectral method

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Effect of additional element and heat treating temperature on micro-structure and mechanical behavior of Ag alloy thin film

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中国有色金属学会会刊：英文版 2006年第B01期16卷 217-219页

作者： ISHIGURO S A RIZONO T hasegawa K Department of Material Science and Engineering Saitama Institute of TechnologyFusaiji 1690OkabeSaitamaJapan 369-0293 Ishifuku Metal Industry Co Ltd Kana 3-20-7Chiyoda-kuTokyoJapan

For Ag alloy film used for the storage media, it is required to have heat-resistance, anti-constant temperature and anti-constant humidity characteristics, corrosion resistance, while high reflectivity over Al is maintained. An Ag alloy thin film (additive element Pd, Cu, P) was created on glass substrates, and various heat treatment was conducted. Then, fine structure was observed on this thin film using AFM, and fine structure evaluation of the inside was carried out by the in-plane diffractometry and X-ray diffractometry, and in addition, residual stress analysis was carried out. These results were compared and were examined, and fine structure and physical property in a metallic thin film were evaluated, and usefulness of evaluation method was verified.

关键词：银合金薄膜添加元素热处理温度显微结构力学行为

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Prevalence and characteristics of Kawasaki disease before and during the COVID-19 pandemic

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World Journal of Pediatrics 2021年第2期17卷 215-217页

作者： Rintaro Ono Daisuke hasegawa Department of Pediatrics St.Luke's International Hospital9-1 AkashichoChuo-kuTokyo 104-8560Japan

Kawasaki disease(KD)is a febrile disease with unclear *** far,KD has been considered to be trig-gered,at least in part,by an infection[1].In 2020,corona-virus disease 2019(COVID-19)became a global pandemic and lifestyles changed ***,the preva-lence of common infection has decreased *** epidemiological change prompted us to postulate that major variations of common pediatric infections would affect the incidence of KD.

关键词： prompt characteristics Kawasaki

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Synthesis of a stroboscopic image from a hand-held camera sequence for a sports analysis

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Computational Visual Media 2016年第3期2卷 277-289页

作者： Kunihiro hasegawa Hideo Saito Keio University

This paper presents a method for synthesizing a stroboscopic image of a moving sports player from a hand-held camera sequence. This method has three steps: synthesis of background image,synthesis of stroboscopic image, and removal of player's shadow. In synthesis of background image step, all input frames masked a bounding box of the player are stitched together to generate a background image. The player is extracted by an HOG-based people *** synthesis of stroboscopic image step, the background image, the input frame, and a mask of the player synthesize a stroboscopic image. In removal of shadow step, we remove the player's shadow which negatively affects an analysis by using mean-shift. In our previous work, synthesis of background image has been timeconsuming. In this paper, by using the bounding box of the player detected by HOG and by subtracting the images for synthesizing a mask, computational speed and accuracy can be improved. These have contributed greatly to the improvement from the previous *** are main improvements and novelty points from our previous method. In experiments, we confirmed the effectiveness of the proposed method, measured the player's speed and stride length, and made a footprint image. The image sequence was captured under a simple condition that no other people were in the background and the person controlling the video camera was standing still, such like a motion parallax was not occurred. In addition, we applied the synthesis method to various scenes to confirm its versatility.

关键词： sports vision stroboscopic image stitching mask synthesis

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Adenosine triphosphate maintenance by branched chain amino acids as a novel neuroprotective strategy for retinal neurodegenerative diseases

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Neural Regeneration Research 2019年第1期14卷 82-84页

作者： Tomoko hasegawa Hanako Ohashi Ikeda Department of Ophthalmology and Visual Sciences Kyoto University Graduate School of Medicine Department of Experimental Therapeutics Institute for Advancement of Clinical and Translational Science Kyoto University Hospital

Retinal neuronal cell death is caused in many incurable eye diseases such as retinitis pigmentosa(RP)and glaucoma,which are leading causes of adult *** RP,progressive loss of photoreceptor cells leads to visual *** established treatments are available to date for this condition,although potential treatments,including regenerative medicine,gene therapy,and neurotropic factor therapy are being *** glaucoma。

关键词：眼睛疾病视网膜氨基酸基因治疗腺苷分叉维护光敏电阻器

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