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Synthesis of novel adsorbent by intercalation of biopolymer in LDH for the removal of arsenic from synthetic and natural water

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Journal of Environmental Sciences 2020年第5期32卷 246-261页

作者： Hanen Bessaies Sidra Iftekhar Bhairavi Doshi Jamel Kheriji Mohamed Chaker Ncibi Varsha Srivastava mika Sillanpaa Bechir Hamrouni Laboratory of Desalination and Water Treatement LR19ES01 Faculty of Sciences of TunisTunis El Manar University2092El Manar ITunisia Department of Separation Science Lappeenranta-Lahti University of Technology(LUT)Sammonfeatu 12FI-50130MikkeliFinland International Water Research Institute MohammedⅥPolytechnic UniversityCity Ben Guerir 43150Morocco Department of Civil and Environmental Engineering Florida International UniversityMiamiFL 33174USA Department of Environmental Engineering University of Engineering and TechnologyTaxilaPakistan

This study focuses on the synthesis of nanocomposites named CCA and CZA that were prepared by the incorporation of cellulose(CL)in the Ca/Al and Zn/Al layered double hydroxide(LDH),*** materials were then used for the uptake of As(Ⅲ)and As(V)from aqueous *** of both nanocomposites(CCA and CZA)was done using FTIR and Raman analysis to identify the functional groups,N2 adsorption-desorption isotherms to determine the specific surface area and pore geometry and XPS analysis to obtain the surface atomic *** other characters were investigated using simultaneous TGA and DTA and elemental chemical analysis(CHNS/O).The crystallinity of the prepared nanocomposites was displayed by XRD ***,the sheet-like structure of the LDHs and the irregularity of surface morphology with porous structure were observed by TEM and SEM *** of maximum adsorption capacity was adjusted using different parameters including pH,contact time and adsorbent *** pseudo-second-order model was in good fitting with kinetics *** adsorption isotherm results showed that CZA exhibits better adsorption capacity for As(Ⅲ)than CCA and the Langmuir isotherm model described the data well for both *** studies illustrated the endothermic nature of CCA and exothermic nature on CZA,as well as the fact that the adsorption process is spontaneous.A real water sample collected from well located in Gabes(Tunisia),has also been *** obtained experimental results were confirmed that these sorbents are efficient for the treatment of hazardous toxic species such as.

关键词： Layered double hydroxide Adsorption Arsenic removal Kinetics Natural water treatment

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Unsedated transnasal small-caliber esophagogastroduoden oscopy in elderly and bedridden patients

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World Journal of Gastroenterology 2009年第44期15卷 5586-5591页

作者： mika Yuki Yuji Amano Yoshinori Komazawa Hiroyuki Fukuhara Toshihiro Shizuku Shun Yamamoto Yoshikazu Kinoshita Division of Internal Medicine Izumo-City General Medical Center613 Nadabunn-choIzumo-shi Shimane 693-0003Japan Division of Endoscopy Shimane University Hospital89-1 Enya-choIzumo-shiShimane 693-8501Japan Division of Internal Medicine Unnan Municipal General Hospital96-1 Iida-choUnnan-shiShimane 699-1221Japan Second Department of Internal Medicine Shimane UniversitySchool of Medicine89-1 Enya-choIzumo-shiShimane 693-8501Japan

AIM： To evaluate the safety of unsedated transnasal small-caliber esophagogastroduodenoscopy （EGD） for elderly and critically ill bedridden patients. METHODS： One prospective randomized comparative study and one crossover comparative study between transnasal small-caliber EGD and transoral conventional EGD was done （Study 1）. For the comparative study, we enrolled 240 elderly patients aged 〉 65 years old. For the crossover analysis, we enrolled 30 bedridden patients with percutaneous endoscopic gastrostomy （PEG）（Study 2）, We evaluated cardiopulmonary effects by measuring arterial oxygen saturation （SpO2） and calculating the rate-pressure product （RPP）（pulse rate x systolic blood pressure/100） at baseline, 2 and 5 min after endoscopic intubation in Study 1. To assess the risk for endoscopy-related aspiration pneumonia during EGD, we also measured blood leukocyte counts and serum C-reactive protein （CRP） levels before and 3 d after EGD in Study 2. RESULTS： In Study 1, we observed significant decreases in SpO2 during conventional transoral EGD, but not during transnasal small-caliber EGD （0.24% vs -0.24% after 2 min, and 0.18% vs -0.29% after 5 min, P = 0.034, P = 0.044）. Significant differences of the RPP were not found between conventional transoral and transnasal small-caliber EGD. In Study 2, crossover analysis showed statistically significant increases of the RPP at 2 min after intubation and the end of endoscopy （26.8 and 34.6 vs 3.1 and 15.2, P = 0.044, P = 0.046）, and decreases of SpO2 （-0.8% vs -0.1%, P = 0.042） during EGD with transoral conventional in comparison with transnasal small-caliber endoscopy. Thus, for bedridden patients with PEG feeding, who were examined in the supine position, transoral conventional EGD more severely suppressed cardiopulmonary function than transnasal small-caliber EGD. There were also significant increases in the markers of inflammation, blood leukocyte counts and serum CRP values, in bedridden patients after transoral co

关键词： Aged Aspiration pneumonia Gastrointestina endoscopy Critical illness

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Mobile Alert and Warning in the United States and Japan:Confronting the Challenges of International Harmonization

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International Journal of Disaster Risk Science 2021年第6期12卷 928-934页

作者： Hamilton Bean Ana Maria Cruz mika Shimizu Keri K.Stephens Matthew McGlone Sharon Strover Department of Communication University of ColoradoDenver.CO 80204USA Disaster Prevention Research Institute(DPRI).Kyoto University Kyoto 611-0011Japan Graduate School of Advanced Integrated Studies in Human Survivability Kyoto UniversityKyoto 606-8501Japan Department of Communication Studies The University of Texas at AustinAustinTX 78712USA School of Journalism and Media The University of Texas at AustinAustinTX 78712USA

A U.S.-Japan expert workshop on mobile alert and warning was held online 8–10 September *** by the Japan Foundation’s Center for Global Partnership(CGP)and responding to the Sendai Framework for Disaster Risk Reduction 2015–2030,the workshop compared *** Japanese mobile alert and warning contexts,systems,policies,and messages to investigate possibilities for international harmonization of mobile device-based early *** workshop’s sessions revealed two interrelated issues that repeatedly surfaced among workshop participants:culture and *** workshop illuminated several possibilities and problems confronting U.S.,Japanese,and global stakeholders as they develop,deploy,and seek to improve the effectiveness of mobile alert and warning systems and messages.

关键词： Alerts Disasters Warning Japan Mobile technology United States

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On-treatment predictions of success in peg-interferon/ribavirin treatment using a novel formula

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World Journal of Gastroenterology 2010年第1期16卷 89-97页

作者： Hidetsugu Saito Hirotoshi Ebinuma Keisuke Ojiro Kanji Wakabayashi mika Inoue Shinichiro Tada Toshifumi Hibi Department of Internal Medicine School of MedicineKeio University

AIM:To predict treatment success using only simple clinical data from peg-interferon plus ribavirin therapy for chronic hepatitis C. METHODS:We analyzed the clinical data of 176 patients with chronic hepatitis and hepatitis C virus genotype 1 who received 48 wk standard therapy, derived a predictive formula to assess a sustained virological response of the individual patient using a logistic regression model and confirmed the validity of this *** formula was constructed using data from the first 100 patients enrolled and validated using data from the remaining 76 patients. RESULTS:Sustained virological response was obtained in 83(47.2%)of the patients and we derived formulae to predict sustained virological response at pretreatment and weeks 4,12 and *** likelihood of sustained virological response could be predicted effectively bythe formulae at weeks 4,12 and 24(the area under the curve of the receiver operating characteristic:0.821, 0.802,and 0.891,respectively),but not at baseline (0.570).The formula at week 48 was also constructed and validation by test data achieved good prediction with 0.871 of the area under the curve of the receiver operating *** by this formula was always superior to that by viral kinetics. CONCLUSION:These results suggested that our formula combined with viral kinetics provides a clear direction of therapy for each patient and enables the best tailored treatment.

关键词： Logistic regression analysis Predictive formula Prolongation of the therapy Response-guided therapy Viral kinetics

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Staying Moderately Active Benefits Our Brains

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新高考(英语进阶) 2017年第9期 34-35页

作者： mika

词数:475阅读难度:★★★☆☆建议阅读时间:5分钟Scientists studying Alzheimer’s have found that staying moderately active can lead to healthier brain functions in those at risk of developing the disease,potentially giving us another clue how to beat the *** particular the research looked at glucose metabolism,the process that gives brain cells the right amount of fuel,and that also happens to break down with the onset of Alzheimer’*** from the University of

关键词：阿兹海默症 Staying Moderately Active Benefits Our Brains

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Oscillating droplet tribometer for sensitive and reliable wetting characterization of superhydrophobic surfaces

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Droplet 2022年第1期1卷 38-47页

作者： Muhammad Junaid Heikki A.Nurmi mika Latikka Maja Vuckovac Robin H.A.Ras Department of Applied Physics School of ScienceAalto UniversityEspooFinland Department of Bioproducts and Biosystems School of Chemical EngineeringAalto UniversityEspooFinland

Accurate wetting characterization is crucial for the development of next‐generation superhydrophobic ***,wetting properties are measured with a contact angle goniometer(CAG)suitable for a broad range of ***,due to optical errors and challenges in baseline positioning,the CAG method suffers from inaccuracies on superhydrophobic *** we present an improved version of the oscillating droplet tribometer(ODT),which can reliably assess wetting properties on superhydrophobic surfaces by measuring the frictional forces of a water‐based ferrofluid droplet oscillating in a magnetic *** demonstrate that ODT has superior accuracy compared to CAG by measuring the wetting properties of four different superhydrophobic surfaces(commercial Glaco and Hydrobead coatings,black silicon coated with fluoropolymer,and nanostructured copper modified with lauric acid).We show that ODT can detect the small but significant changes in wetting properties caused by the thermal restructuring of surfaces that are undetectable by *** more,unlike any other wetting characterization technique,ODT features an inverse sensitivity:the more repellent the surface,the lower the error of measurement,which was demonstrated by experiments and simulations.

关键词： oscillating frictional wetting

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Nitrogen resorption and fractionation during leaf senescence in typical tree species in Japan

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Journal of Forestry Research 2020年第6期31卷 2053-2062页

作者： Ayako Enta mika Hayashi Maximo Larry Lopez Caceres Lei Fujiyoshi Toshiro Yamanaka Akira Oikawa Felix Seidel Faculty of Agriculture Yamagata UniversityWakabamachi 1-23Tsuruoka 997-8555Japan Research Institute for Humanity and Nature Motoyama 457-4KamigamoKita-kuKyoto 603-8047Japan Department of Ocean and Environmental Sciences Tokyo University of Marine Science and Technology4-5-7 Konan Minato-kuTokyo 108-8477Japan

In northeastern Japan,an area of high precipitation and mountains,beech(Fagus creanata Blume),larch(Larix kaempferi Lamb.),cedar(Cryptomeria japonica ***)and black locust(Robinia pseudoacacia L.)were evaluated for N resorption and N isotope fractionation in preand post-abscission leaves in comparison to green *** highest leaf N concentration in summer corresponded to the N-fi xing black locust,followed in decreasing order by the deciduous beech and larch and evergreen *** the other hand,the lowest N resorption effi ciency corresponded to black locust and the highest to beech,in increasing order by larch and *** tree species returned signifi cant amounts of N before leaf abscission;however,N isotope fractionation during leaf N resorption was only found for beech,with a depleted N isotope value from green to pre-abscission *** most N,however,was resorbed from pre-abscission to *** result may indicate thatδ15 N fractionation took place during N transformation processes,such as protein hydrolysis,when the concentration of free amino acids increased *** diff erence in the type of amino acid produced by each species could have infl uenced the N isotope ratio in beech but not in the other tree *** results of this study showed that it is possible to infer the type and timing of processes relevant to N resorption by analyzing leafδ15 N variation during senescence.

关键词： Amino acids Cool temperate forest Fresh litter N resorption δ15 N

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Trace elements and rare earth elements in wet deposition of Lijiang,*** region,southeastern edge of the Tibetan Plateau

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Journal of Environmental Sciences 2017年第2期29卷 18-28页

作者： Junming Guo Shichang Kang Jie Huang mika Sillanpaa Hewen Niu Xuejun Sun Yuanqing He Shijing Wang Lekhendra Tripathee Key Laboratory of Tibetan Environment Changes and Land Surface Processes Institute of Tibetan Plateau ResearchChinese Academy of Sciences(CAS)Beijing 100101China State Key Laboratory of Cryospheric Sciences Cold and Arid Regions Environmental and Engineering of Research InstituteCASLanzhou 730000China CAS Center for Excellence in Tibetan Plateau Earth Sciences Beijing100101China Laboratory of Green Chemistry Lappeenranta Uniuersity of TechnologyMikkeli 50130Finland University of Chinese Academy of Sciences Beijing 100049China

In order to investigate the compositions and wet deposition fluxes of trace elements and rare earth elements（REEs） in the precipitation of the southeastern edge of the Tibetan Plateau, 38 precipitation samples were collected from March to August in 2012 in an urban site of Lijiang city in the Mt. Yulong region. The concentrations of most trace elements and REEs were higher during the non-monsoon season than during the monsoon season,indicating that the lower concentrations of trace elements and REEs observed during monsoon had been influenced by the dilution effect of increased precipitation. The concentrations of trace elements in the precipitation of Lijiang city were slightly higher than those observed in remote sites of the Tibetan Plateau but much lower than those observed in the metropolises of China, indicating that the atmospheric environment of Lijiang city was less influenced by anthropogenic emissions, and, as a consequence, the air quality was still relatively good. However, the results of enrichment factor and principal component analysis revealed that some anthropogenic activities（e.g., the increasing traffic emissions from the rapid development of tourism） were most likely important contributors to trace elements, while the regional/local crustal sources rather than anthropogenic activities were the predominant contributors to the REEs in the wet deposition of Lijiang city. Our study was relevant not only for assessing the current status of the atmospheric environment in the Mt. Yulong region, but also for specific management actions to be implemented for the control of atmospheric inputs and the health of the environment for the future.

关键词： Trace elements Rare earth elements Wet deposition Seasonal variation Lijiang city Tibetan Plateau

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What Is a Kind of Feeling When Your Beauty Is Fading with Aging?

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新高考(英语进阶) 2017年第10期 34-35页

作者： mika

词数:512阅读难度:★★★☆☆建议阅读时间:6分钟How does it feel to once be extremely gorgeous and pretty,grow old,and now no one pays attention to you?I don’t know about"extremely gorgeous",but when I was younger I was often asked to model.l’m 53 now,and no one asks me to model ***’s *** is what it ***,I’d prefer the wrinkles go away.I’d love to be 110 pounds no matter what I eat again,and I do miss that long,blond,shiny

关键词： What Is a Kind of Feeling When Your Beauty Is Fading with Aging

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Blocking Phone Alerts for just One Day can Change Your Habits for Years

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新高考(英语进阶) 2017年第11期 32-34页

作者： mika

词数:447阅读难度:★★★建议阅读时间:5分钟Almost half of the participants in a study who were asked to switch off their phone notifications for a day said it was still influencing their habits two years later-so maybe dealing with your phone addiction isn’t as difficult as you *** a day away from the pings and buzzes can make a difference,say the researchers behind the new *** also found participants felt less distracted

关键词： length Blocking Phone Alerts for just One Day can Change Your Habits for Years Phone 定语从句状语从句简单句

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