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Material conversion from paper sludge ash in NaOH solution to synthesize adsorbent for removal of Pb^(2+),NH_4^+and PO_4^(3-) from aqueous solution

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Journal of Environmental Sciences 2011年第5期23卷 718-724页

作者： Takaaki Wajima kenzo Munakata Faculty of Engineering and Resource Sciences Akita University

Material conversion from paper sludge ash （PSA） in NaOH solution was attempted to synthesize the adsorbent for removal of inorganic pollutants, such as Pb^2＋, NH^4＋ and PO4^3- from aqueous solution. PSA of 0.5 g was added into 10 mL of 3 mol/L NaOH solution, and then heated at 80, 120, and 160℃ for 6-48 hr to obtain the product. PSA mainly composed of two crystalline phases, gehlenite （Ca2Al2SiO7） and anorthite （CaAl2Si2O8）, and amorphous phase. Hydroxysodalite （Na6Al6Si6O24-8H2O） was formed at 80℃, and anorthite dissolved, whereas gehlenite remained unaffected. Katoite （Ca3Al2SiO4（OH）8） was formed over 120℃, and hydroxycancrinite （Nas（OH）2Al6Si6O24·2H2O） was formed at 160℃, due to the dissolution of both gehlenite and anorthite. Specific surface areas of the products were almost same and were higher than that of raw ash. Cation exchange capacities （CECs） of the products were also higher than that of raw ash, and CEC obtained at lower temperature was higher. Removal abilities of products for Pb^2＋, NH4＋, and PO4^3- were higher than that of raw ash. With increasing reaction temperature, the removal efficiencies of Pb^2＋ and NH4＋ decreased due to the decrease of CEC of the product, while removal efficiency for PO4^3- was almost same. The concentrations of Si and AI in the solution and the crystalline phases in the solid during the reaction explain the formation of the product phases at each temperature.

关键词： paper sludge ash hydrothermal synthesis gehlenite anorhite heavy metal ion ammonium ion phosphate ion

Direct measurement of the three-dimensional distribution of leaf area density and light conditions in a mature oak stand by the cube method

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林业研究:英文版 2023年第6期34卷 1817-1827页

作者： Chiharu Migita Yukihiro Chiba Tanaka kenzo Forestry and Forest Products Research Institute TsukubaIbaraki 305-8687Japan Japan International Research Centre for Agricultural Sciences TsukubaIbaraki 305-8686Japan

Although the distributions of foliage and light play major roles in various forest functions,accurate,nondestructive measurement of these distributions is difficult due to the complexity of the canopy *** evaluate the foliage and light distributions directly and nondestructively in a mature oak stand,we used the cube method by dividing the forest canopy into small cubes(50 cm per side)and directly measured leaf area density(LAD,the total one-sided leaf area per unit volume,i.e.,cube)and relative irradiance(RI)within each *** distribution of LAD and of RI was highly heterogeneous,even at the same canopy *** heterogeneity reflected the presence of foliage clusters associated with multiple forking *** relationship between cumulative LAD at the canopy surface and average RI followed the Beer-Lambert *** mean light extinction coefficient(K)was ***,K was overestimated by more than double(0.80)when calculated based on the classical method using RI at the forest *** overestimation was caused by the lower RI due to light absorption by nonleaf plant parts below the *** findings on the complex foliage and light distributions in canopy layers should help improve the accuracy of RI and K measurements and thus more accurate predictions of environmental responses and forest functions.

关键词： Beer-Lambert law Canopy structure Foliage cluster Leaf area density Leaf area index Relative light intensity

A WORK SOFTENING JOINT ELEMENT USED IN DYNAMIC ANALYSIS OF SOIL-STRUCTURE

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Acta Mechanica Sinica 1989年第4期5卷 353-360页

作者： kenzo Toki Disaster Prevention Research Institute Kyoto University Uji Kyoto Japan

This paper introduces an elasto-plastic joint element characterised by strain hardening and softening in the analysis of dynamic soil-structure interaction, the phenomena of sep- aration and sliding on the contact surface between soil and structure can be better simulated and the process can also be described. The interaction problems in a typical soil-structure system are analyzed in terms of elasto-plastic joint element as well as elastic ones. The results show that the elasto-plastic joint element is much better than the elastic one in modelling, especially in that the relative displace- ments accross the joint element can be much greater than that of the elastic case. Separation and slid- ing are not only related to the coefficient of friction and cohesion but also to their changes with plastic volumetric strain.

关键词： strain softening separation sliding

A New LC-MS Interface: Laser Spray

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分析测试学报 2001年第Z1期20卷 138-139页

作者： kenzo Hiraoka Clean Energy Research Center Yamanashi University Takeda - 4 Kofu 400 - 8511 Japan

A new LC - MS interface was *** ion signals were obtained when aqueous or water/methanol sample solution effusing out of the stainless steel capillary was irradiated by the focused infrared ***, the ion signals obtained by this method, laser spray, are greater than those by electrospray, especially in the negative- mode operation.……

关键词： stainless steel sample solution

Characteristics of In-Hospital Patients with Congenital Heart Disease Requiring Rapid Response System Activations: A Japanese Database Study

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Congenital Heart Disease 2022年第1期17卷 31-43页

作者： Taiki Haga Tomoyuki Masuyama Yoshiro Hayashi Takahiro Atsumi kenzo Ishii Shinsuke Fujiwara Department of Pediatric Critical Care Medicine Osaka City General HospitalOsaka534-0021Japan Department of Emergency and Critical Care Medicine Jichi Medical University Saitama Medical CenterSaitama330-8503Japan Department of Intensive Care Medicine Kameda Medical CenterChiba296-8602Japan Department of Emergency Medicine Seirei Hamamatsu General HospitalShizuoka430-8558Japan Department of Anesthesiology Intensive Care UnitFukuyama City HospitalHiroshima721-8511Japan Department of Emergency Medicine NHO Ureshino Medical CenterSaga843-0393Japan

Objectives:This study aimed to study the characteristics of in-hospital deterioration in patients with congenital heart disease who required rapid response system activation and identify risk factors associated with 1-month ***:We retrospectively analysed data from a Japanese rapid response system registry with 35 participating *** included consecutive patients with congenital heart disease who required rapid response system activation between January 2014 and March *** regression analyses were performed to examine the associations between 1-month mortality and other patient-specific ***:Among 9,607 patients for whom the rapid response system was activated,only 82(0.9%)had congenital heart *** few patients with congenital heart disease were being treated at the cardiology and cardiovascular surgery departments(12.3%and 9.9%,respectively).Moreover,the incidences of rapid-response events after intensive care unit discharge or surgery were low(6.8% and 12.2%,respectively).The most common reason for rapid response system activation was respiratory dysfunction(desaturation:35.4%,tachypnoea:25.6%,and new dyspnoea:19.5%).Rapid response system interventions and intensive care unit transfers were required for 65.9% and 20.7%of patients,*** mortality rate was 1.2% at the end of the rapid response system intervention and 11.0% after 1 ***,decreased respiratory rate and decreased heart rate at rapid response system activation were associated with increased 1-month *** adjusted odds ratio was 1.10(95% confidence interval 1.02–1.19)and 1.02(95% confidence interval,1.00–1.04) for respiratory rate and heart rate,***:Rapid response systems were rarely activated after cardiac surgery and intensive care unit discharge,which were situations with a high risk of sudden deterioration in patients with congenital heart ***,encouraging the use of the rapid response sys

关键词： Heart defects congenital emergencies clinical deterioration hospital rapid response team critical care This

Electric Field Enhancement of Nano Gap of Silver Prisms

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Chinese Physics Letters 2007年第10期24卷 2934-2937页

作者： kenzo Yamaguchi TOMOHIRO Inoue MASAMITSU Fujii MASANOBU Haraguchi TOSHIHIRO Okamoto MASUO Fukui SHU Seki SEIICHI Tagawa Department of Optical Science and Engineering Faculty and School of Engineering The University of Tokushima 2-1 Minamijosanjima-cho Tokushima-city Tokushima 770-8506 Japan Department of Electronics and Mechanics Toba National College of Maritime Technology 1-1 Ikegami-cho Toba-city Mie 517-8501 Japan Institute of Scientific and Industrial Research Osaka University 8-1 Mihogaoka Ibaraki Osaka 567-0047 Japan

Using numerical calculation, we examine the effects of gap distance of a pair of nano gap silver prisms with rounded corners on the local light intensity enhancement. Two peaks due to localized surface plasmon （LSP） excitation are observed in a wavelength range from 900nm to 300nm. The results demonstrate that peaks at a longer and a shorter wavelength corresponded to dipole-like and quadrupole-like LSP resonances, respectively. It is found that a gap distance up to 20 nm provides larger light intensity enhancement than that of a single silver nano prism with rounded corners. Furthermore, nano gap silver prisms are fabricated by direct focused ion beam processing, and we measure the scattering light spectrum of a pair of nano prisms by a confocal optical system. However, the two LSP peaks are not observed in visible range because the sizes of the nano gap and prisms are too large.

关键词： SURFACE-PLASMON RESONANCE AG NANOPARTICLES NEAR-FIELD NANOANTENNAS SCATTERING

LESSONS IN PREVENTION OF ISCHEMIC HEART DISEASE LEARNED FROM PATHOLOGICAL STUDIES OF CORONARY ATHEROSCLEROSIS

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中华医学杂志(英文版) 1992年第5期105卷 390-393页

作者： kenzo Tanaka Katsuo Sueishi Department of Pathology Faculty of Medicine Kyushu University Japan

The recent status of the extent and severity ofatherosclerosis in Japanese children and young adultsand its causative factor are *** materialand data are collected from 2 856 autopsies,with theage range of 1 month to 39 ***-fibrinmetabolism in the arterial wall has a definite role *** incidence of myocardial infarctionin 539 consecutive autopsy cases over 40 years old atKyushu University is 12.7%.

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Study on Sustainable Rainwater Resource Utilization—Towards Deepening of Homo Environmentics

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Journal of Water Resource and Protection 2019年第5期11卷 491-528页

作者： Akira Hiratsuka kenzo Wakae Environmental Humanities Independent Scholar Kyoto Japan Oriental History Ehime University Ehime Japan

This paper mainly investigated the value of the rainwater by introducing a “Logic of Encounter” that is a new logic beyond the logos and lemma through the metaphors which compare the real rainwater to one’s life. A consideration regarding sustainable rainwater resource utilization has been described and the main results are summarized in the paper.

关键词： Logic of Encounter Analogy One’s Life Emergency Drinking Water Rainwater Quality Purification

Effect of surface treatment for aluminum foils on discharge properties of lithium-ion battery

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Transactions of Nonferrous Metals Society of China 2014年第7期24卷 2314-2319页

作者： Shigeki NAKANISHI Takashi SUZUKI Qi CUI Jun AKIKUSA kenzo NAKAMURA Products Research and Development Department Mitsubishi Aluminum Co. Ltd. Central Research Institute Electronic Components Department Mitsubishi Materials Corporation

Aluminum foils having thicknesses of 10-20 μm are commonly employed as current collectors for cathode electrodes in Li-ion batteries. The effects of the surface morphology of the foil on battery performance were investigated by using a foil with roughened surface by chemical etching and a plain foil with smooth surface on both sides. For high-conductivity LiCoO2 active materials with large particle size, there are no significant differences in battery performance between the two types of foils. But for low-conductivity LiFePO4 active materials with small particle size, high-rate discharge properties are significantly different. The possibility shows that optimizing both the surface morphology of the aluminum foil and particle size of active material leads to improvement of the battery performance.

关键词： lithium-ion battery battery performance surface treatment conductivity plain foil roughened foil