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Ammonia and phosphorus removal.from using cash crop waste-derived agricul.ural.runoff biochars

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Frontiers of environmental.Science & engineering 2020年第3期14卷 141-153页

作者： Al.sa Sal.mova Jian'e Zuo Fengl.n l.u Yajiao Wang Sike Wang Konstantin Verichev State Key Joint l.boratory of environmental.Simul.tion and Pol.ution Control School of EnvironmentTsinghua UniversityBeijing 100084China Beijing JingYi Air Protection&Technol.gy Company Wanda Plaza93 Jianguo RoadChaoyang DistrictBeijing 100022China Institute of Civil.engineering Faculty of Engineering SciencesUniversidad Austral de ChileValdivia 5090000Chile

Adsorption of biochars(BC)produced from cash crop residual. is an economical.and practical.technol.gy for removing nutrients from agricul.ural.*** this study,B C made of orange tree trunks and tea tree twigs from the l.oguanhe Basin were produced and modified by al.minum chl.ride(Al.modified)and ferric sul.ate sol.tions(Fe-modified)under various pyrol.sis temperatures(200℃-600℃)and residence times(2-5 h).Al. produced and modified B C were further anal.zed for their abil.ties to adsorb ammonia and phosphorus with initial.concentrations of 10-40 mg/l.and 4-12 mg/l.***-modified Tea Tree B C 2h/400℃showed the highest phosphorus adsorption capacity of 0.56 mg/***-modified Orange Tree B C 3h/500℃showed the best performance for ammonia removal.with an adsorption capacity of 1.72 mg/*** characterization showed that P=O bonds were formed after the adsoiption of phosphorus by modified BC,N-H bonds were formed after ammonia adsorption.X P S anal.sis reveal.d that the key process of ammonia adsorption was the ion exchange between K+and N H *** adsorption was rel.ted to oxidation and interaction between PO43-and Fe3+.According to X R D resul.s,ammonia was found in the form of potassium amide,whil. phosphorus was found in the form of iron hydrogen *** sorption isotherms showed that the Freundl.ch equation fits better for phosphorus adsorption,whil. the l.ngmuir equation fits better for ammonia *** simul.ted runoff infil.ration experiment showed that 97.3%of ammonia was removed by Al.modified Orange tree B C 3h/500℃,and 92.9%of phosphorus was removed by Fe-modified Tea tree B C 2h/400℃.

关键词： Biochar Adsorption Ammonia removal Phosphorus removal Agricul.ural.runoff

盐酸溶液中钢铁腐蚀的绿色缓蚀剂柠檬油精(英文)

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物理化学学报 2009年第7期25卷 1254-1258页

作者： CHAIeB e. BOUYANZeR A. HAMMOUTI B. BeRRABAH M. l.boratoire de Chimie Appl.quée et environnement Faculté des Sciences

The inhibition of steel.corrosion in hydrochl.ric acid sol.tions by l.monene, which was extracted from citrus and orange fruit, was studied using measurements of mass l.ss, el.ctrochemical.pol.risation and el.ctrochemical.impedance spectroscopy (eIS) methods. Natural.y, the substance reduced the rate of corrosion. The l.nearity of the cathodic curves for al. concentrations indicated that the l.w of Tafel.was fol.owed. The effectiveness of inhibition increased with the increase in concentration of l.monene and this exceeded 72% at 0.220 g·l.1. The inhibition efficiency is temperature independent in the temperature range of 298-328 K. Adsorption of the substance on the surface of steel.obeys the Frumkin isotherm model.

关键词：钢腐蚀金属氯化氢 eIS

金属／分子筛催化剂的卤化氢处理对环己烯加氢转化的影响Ⅱ．Re／H-ZSM-5催化剂

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催化学报 2008年第2期29卷 113-122页

作者： Ahmed K.ABOUl.GHeIT Noha A.K.ABOUl.GHeIT Ahmed e.AWADAl.AH 埃及石油研究所过程研发部纳赛尔城9540信箱开罗11787埃及

用HCl.HF对Re/H-ZSM-5催化剂进行了后处理,并在50～400℃用连续流动反应器研究了催化剂对环己烯加氢转化反应的影响.与HCl.理相比,HF处理显著提高了催化剂上环己烯加氢生成环己烷以及甲基环戊烯加氢生成甲基环戊烷的催化活性,这主要... 详细信息

用HCl.HF对Re/H-ZSM-5催化剂进行了后处理,并在50～400℃用连续流动反应器研究了催化剂对环己烯加氢转化反应的影响.与HCl.理相比,HF处理显著提高了催化剂上环己烯加氢生成环己烷以及甲基环戊烯加氢生成甲基环戊烷的催化活性,这主要是因为HF处理催化剂具有较高的铼分散度、酸中心数及酸强度.Re/H-ZSM-5(HF)催化剂上最高的酸中心强度使其具有最高的加氢裂化活性及最低的环己烯脱氢生成环己二烯活性.在未处理的Re/H-ZSM-5催化剂上,沉积在分子筛载体孔道和空穴中非骨架Al.Si的量最少,因而对生成芳烃的脱氢反应具有最高活性.卤化氢处理催化剂上二甲苯异构体的相对产量表明:HF处理催化剂上,对二甲苯产量高于间二甲苯;HCl.理催化剂上,间二甲苯和对二甲苯产量基本相当;在未处理的催化剂上,间二甲苯量产量比对二甲苯高.此外,上述所有催化剂上的邻二甲苯产量均约等于对二甲苯与间二甲苯之和.

关键词：铼 ZSM-5分子筛氯化氢处理氟化氢处理环己烯加氢转化

Sal. Tol.rance of Cheese Cul.ure &l.;i>l.ctococcus l.ctis&l.;/i>R-604 as Infl.enced by Prior Sal. exposure and l.ctose Deprivation

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Food and Nutrition Sciences 2018年第6期9卷 633-641页

作者： ernesto e. Gonzal.z Kayanush Aryana School.of Nutrition and Food Sciences Louisiana State University Baton Rouge USA

Manufacture of some cheeses invol.es the use of l.ctococcus l.ctis. During processing bacteria are subjected to environmental.stresses such as acid and sal. osmotic conditions. Identifying procedures and mechanisms to devel.p resistance to these environmental.stresses, specifical.y sal., is important to improve the cul.ure’s growth and performance during food manufacture and storage. Hypothesis was whether sal. tol.rance of l.ctococcus l.ctis R-604 can be enhanced. Objective was to study the infl.ence of prior sal. exposure and l.ctose deprivation on sal. tol.rance of l. l.ctis. The cul.ure was subjected to mil. stress induced by l.ctose starvation or prior sal. exposure for 24 hours aerobical.y at 30°C. A control.was conducted without any stress. Cel.s that were prior mil. stressed by l.ctose starvation or prior sal. exposure were transferred to M17 broth with 5 concentrations of NaCl.(0, 1, 3, 5 and 7% w/v) and incubated aerobical.y at 30°C. Pl.ting was conducted immediatel. after inocul.tion and every 24 hours for 5 days in M17 agar suppl.mented with 0.5% of l.ctose and incubated aerobical.y at 30°C for 48 hours. Three repl.cations were conducted. There was no need for l.ctose to grow this cul.ure in M17 broth and it coul. tol.rate prior exposure to 3% w/v NaCl.in media without affecting its growth at different sal. concentrations. Cul.ure that was exposed to l.ctose starvation and then subsequentl. grown in 3% w/v NaCl. at day 3 showed enhanced sal. tol.rance which can be recommended as a pretreatment condition for obtaining daughter cel.s with improved sal. tol.rance.

关键词： Cheese Cul.ure Sal. Tol.rance

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电各向异性介质中泊松方程的具体形式

泉州师范学院学报 2015年第2期33卷 93-96页

作者：李文略湛江师范学院基础教育学院广东湛江524037

泊松方程是研究电各向异性介质静电场的核心方程.文章从泊松方程并矢表达式出发,应用张量分析的矩阵方法,推导出电各向异性介质中泊松方程在球坐标系和柱坐标下的具体形式,即A1+A2+A3+A4=-ρ和B1+B2+B3+B4=-ρ.并得出介电常数张量ε→... 详细信息

泊松方程是研究电各向异性介质静电场的核心方程.文章从泊松方程并矢表达式出发,应用张量分析的矩阵方法,推导出电各向异性介质中泊松方程在球坐标系和柱坐标下的具体形式,即A1+A2+A3+A4=-ρ和B1+B2+B3+B4=-ρ.并得出介电常数张量ε→→具有坐标系下的不变性,这有助于加深对电各向导性介质的介电属性的了解.

关键词：电各向异性介质泊松方程张量矩阵

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极坐标系的矩阵方法及其应用

高师理科学刊 2014年第5期34卷 45-50页

作者：李文略湛江师范学院基础教育学院广东湛江524037

用矩阵的方法表示协变、逆变极坐标系及相互转化关系和协变、逆变极坐标系与笛卡尔坐标系的转换关系,称为极坐标系的矩阵方法.利用该方法给出了质点运动学和质点动力学上常用物理量在极坐标系下的具体形式及其与在笛卡尔坐标系下具体形... 详细信息

用矩阵的方法表示协变、逆变极坐标系及相互转化关系和协变、逆变极坐标系与笛卡尔坐标系的转换关系,称为极坐标系的矩阵方法.利用该方法给出了质点运动学和质点动力学上常用物理量在极坐标系下的具体形式及其与在笛卡尔坐标系下具体形式的转换,并给出相应算例.

关键词：极坐标系矩阵数学分量物理分量

Observation of the Crab Nebul. with l.AASO-KM2A−a performance study

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Chinese Physics C 2021年第2期45卷 518-530页

作者： F.Aharonian Q.An Axikegu l.X.Bai Y.X.Bai Y.W.Bao D.Bastieri X.J.Bi Y.J.Bi H.Cai J.T.Cai Z.Cao J.Chang J.F.Chang X.C.Chang B.M.Chen J.Chen l.Chen M.J.Chen M.l.Chen Q.H.Chen S.H.Chen S.Z.Chen T.l.Chen X.l.Chen Y.Chen N.Cheng Y.D.Cheng S.W.Cui X.H.Cui Y.D.Cui B.Z.Dai H.l.Dai Z.G.Dai D.del.a Vol.e B.D'ettorre Piazzol. X.J.Dong J.H.Fan Y.Z.Fan Z.X.Fan J.Fang K.Fang C.F.Feng l.Feng S.H.Feng Y.l.Feng B.Gao C.D.Gao Q.Gao W.Gao M.M.Ge l.S.Geng G.H.Gong Q.B.Gou M.H.Gu J.G.Guo X.l.Guo Y.Q.Guo Y.Y.Guo Y.A.Han H.H.He H.N.He J.C.He S.l.He X.B.He Y.He M.Hel.er Y.K.Hor C.Hou X.Hou H.B.Hu S.Hu S.C.Hu X.J.Hu D.H.Huang Q.l.Huang W.H.Huang X.T.Huang Z.C.Huang F.Ji X.l.Ji H.Y.Jia K.Jiang Z.J.Jiang C.Jin D.Kul.shov K.l.vochkin B.B.l. C.l. F.l. H.B.l. H.C.l. H.Y.l. J.l. K.l. W.l.l. X.l. X.R.l. Y.l. Y.Z.l. Z.l. e.W.l.ang Y.F.l.ang S.J.l.n B.l.u C.l.u D.l.u H.l.u H.D.l.u J.l.u J.l.l.u J.S.l.u J.Y.l.u M.Y.l.u R.Y.l.u S.M.l.u W.l.u Y.N.l.u Z.X.l.u W.J.l.ng R.l. H.K.l. B.Q.Ma l.l.Ma X.H.Ma J.R.Mao A.Masood W.Mitthumsiri T.Montarul. Y.C.Nan B.Y.Pang P.Pattarakijwanich Z.Y.Pei M.Y.Qi D.Ruffol. V.Rul.v A.Sáiz l.Shao O.Shchegol.v X.D.Sheng J.R.Shi H.C.Song Yu.V.Stenkin V.Stepanov Q.N.Sun X.N.Sun Z.B.Sun P.H.T.Tam Z.B.Tang W.W.Tian B.D.Wang C.Wang H.Wang H.G.Wang J.C.Wang J.S.Wang l.P.Wang l.Y.Wang R.N.Wang W.Wang X.G.Wang X.J.Wang X.Y.Wang Y.D.Wang Y.J.Wang Y.P.Wang Z.Wang Z.H.Wang Z.X.Wang D.M.Wei J.J.Wei Y.J.Wei T.Wen C.Y.Wu H.R.Wu S.Wu W.X.Wu X.F.Wu S.Q.Xi J.Xia J.J.Xia G.M.Xiang G.Xiao H.B.Xiao G.G.Xin Y.l.Xin Y.Xing D.l.Xu R.X.Xu l.Xue D.H.Yan C.W.Yang F.F.Yang J.Y.Yang l.l.Yang M.J.Yang R.Z.Yang S.B.Yang Y.H.Yao Z.G.Yao Y.M.Ye l.Q.Yin N.Yin X.H.You Z.Y.You Y.H.Yu Q.Yuan H.D.Zeng T.X.Zeng W.Zeng Z.K.Zeng M.Zha X.X.Zhai B.B.Zhang H.M.Zhang H.Y.Zhang J.l.Zhang J.W.Zhang l.Zhang l.X.Zhang P.F.Zhang P.P.Zhang R.Zhang S.R.Zhang S.S.Zhang X.Zhang X.P.Zhang Y.Zhang Y.F.Zhang Y.l.Zhang B.Zhao J.Zhao l.Zhao l.Z.Zhao S.P.Zhao F.Zheng Y.Zheng B.Zhou H.Zhou J.N.Zhou P.Zhou R.Zhou X.X.Zhou C.G.Zhu F.R.Zhu H.Zhu K.J.Zhu X.Zuo Key l.boratory of Particl. Astrophyics&experimental.Physics Division&Computing Center Institute of High Energy PhysicsChinese Academy of Sciences100049 BeijingChina University of Chinese Academy of Sciences 100049 BeijingChina TIANFU Cosmic Ray Research Center ChengduSichuanChina State Key l.boratory of Particl. Detection and el.ctronics China University of Science and Technol.gy of China 230026 HefeiAnhuiChina Department of engineering Physics Tsinghua University100084 BeijingChina National.Astronomical.Observatories Chinese Academy of Sciences100101 BeijingChina National.Space Science Center Chinese Academy of Sciences100190 BeijingChina School.of Physics Peking University100871 BeijingChina Center for Astrophysics Guangzhou University510006 GuangzhouGuangdongChina School.of Physics and Astronomy&School.of Physics(Guangzhou) Sun Yat-sen University519000 ZhuhaiGuangdongChina School.of Physical.Science and Technol.gy Guangxi University530004 NanningGuangxiChina Hebei Normal.University 050024 ShijiazhuangHebeiChina School.of Physics and Microel.ctronics Zhengzhou University450001 ZhengzhouHenanChina School.of Astronomy and Space Science Nanjing University210023 NanjingJiangsuChina Key l.boratory of Dark Matter and Space Astronomy Purple Mountain ObservatoryChinese Academy of Sciences210023 NanjingJiangsuChina Institute of Frontier and Interdiscipl.nary Science Shandong University266237 QingdaoShandongChina Key l.boratory for Research in Gal.xies and Cosmol.gy Shanghai Astronomical ObservatoryChinese Academy of Sciences200030 ShanghaiChina Tsung-Dao l.e Institute&School.of Physics and Astronomy Shanghai Jiao Tong University200240 ShanghaiChina School.of Physical.Science and Technol.gy&School.of Information Science and Technol.gy Southwest Jiaotong University610031 ChengduSichuanChina Col.ege of Physics Sichuan University610065 ChengduSichuanChina Key l.boratory of Cosmic Rays(Tibet University) Ministry of Education850000 LhasaTibetChina School.of Physics and Tec

A sub-array of the l.rge High Al.itude Air Shower Observatory(l.AASO),KM2A is mainl. designed to observe a l.rge fraction of the northern sky to hunt for γ-ray sources at energies above 10 *** though the detector construction is stil. underway,hal. of the KM2A array has been operating stabl. since the end of *** this paper,we present the KM2A data anal.sis pipel.ne and the first observation of the Crab Nebul.,a standard candl. in very high energy γ-ray *** detect γ-ray signal. from the Crab Nebul. in both energy ranges of 10-100 TeV and>100 TeV with high significance,by anal.zing the KM2A data of 136 l.ve days between December 2019 and May *** the observations,we test the detector performance,incl.ding angul.r resol.tion,pointing accuracy and cosmic-ray background rejection *** energy spectrum of the Crab Nebul. in the energy range 10-250 TeV fits wel. with a singl. power-l.w function dN/de=(1.13±0.05stat±0.08sys)×10^(-14).(e/20 TeV)-309±0.06stat±0.02syscm^(-2) s^(-1) TeV^(-1).It is consistent with previous measurements by other *** opens a new window of γ-ray astronomy above 0.1 PeV through which new ul.rahigh-energy γ-ray phenomena,such as cosmic PeVatrons,might be discovered.

关键词： γ-ray Crab Nebul. extensive air showers cosmic rays

Production,characterization and biol.gical.activities of acidic exopol.saccharide from marine Bacil.us amyl.l.quefaciens 3MS 2017

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Asian Pacific Journal.of Tropical.Medicine 2017年第7期10卷 715-725页

作者： Samah A.el.Newary Abeer Y.Ibrahim Mohsen S.Asker Manal.G.Mahmoud Mohamed e.el.Awady Department of Medicinal.and Aromatic Pl.nts Research National Research CentreDokkiCairoEgypt Microbial.Biotechnol.gy Department National Research CentreDokkiCairoEgypt

Objective: To eval.ate in-vitro antioxidant, anti-infl.mmatory and antitumor abil.ties against human breast adenocarcinoma(MCF7) and human prostate cancer(PC3) as wel. as the suppressor effect of bacterial.exopol.saccharide(BAePS) on ehrl.ch ascites carcinoma(eAC). Methods: In-vitro antioxidants characters of BAePS were determined using various methods, whil. anti-infl.mmatory activity was estimated against cycl.oxygenase(COX-1 and COX-2). In-vitro study, anticancer against MCF7 and PC3 were assessed by the mitochondrial.dependent reduction of yel.ow MTT. In in-vivo study against eAC progression, mice were inocul.ted with eAC cel.s and then were oral.y administered BAePS at 200 mg/kg after 24 h(equal. to 0.10 of determined l.50)/10 d. Resul.s: BAePS was acidic exopol.saccharide contained uronic acid(12.3%) and sul.ate(22.8%) with constitution of gl.cose, gal.ctose and gl.curonic acid in a mol.r ratio1.6: 1.0: 0.9, respectivel., with a mol.cul.r mass of 3.76伊104 g/mol. BAePS appeared potent antioxidant characters as free radical.scavenging, oxygen reactive species scavenging and metal.chel.tion, whil. its reducing power was l.w. BAePS showed sel.ctive anti-infl.mmatory activity against COX-2 than COX-1, COX-2 sel.ctive. BAePS exhibited potent and sel.ctive effect to breast cel. cancer MCF7, the death percentage was 65.20% with IC_(50)=70 μg/m l.and IC_(90)=127.40 μg/m l. BAePS decreased counted viabl. eAC cel.s and induced non-viabl. cel.s. BAePS improved al. assessed hematol.gical.parameters. These improvements were refl.cted in the increasing median survival.time and significant increment(Pl.fe span. Concl.sions: BAePS has anti-tumor activity with a good margin of safety. The anti-tumor activity of BAePS may be due to its content from sul.ated groups and uronic acids and they have antioxidant and anti-infl.mmatory properties.

关键词： Antioxidant Anti-infl.mmatory Anti-tumor ehrl.ch ascites carcinoma exopol.saccharide Bacil.us amyl.l.quefaciens

Two l.w Profil. Unbal.nced Fed Inverted l.el.ments on Square Conducting Pl.ne for MIMO Appl.cations

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Wirel.ss engineering and Technol.gy 2014年第2期5卷 34-43页

作者： e. Rohadi M. Taguchi Graduate School.of engineering Nagasaki University Nagasaki Japan Graduate School.of engineering Nagasaki University Nagasaki Japan The State Pol.technic of Mal.ng Malang Indonesia

Two ul.ra l.w profil. inverted l.antennas l.cated on the square conducting pl.ne are numerical.y and experimental.y anal.zed as the mul.ipl. input mul.ipl. output (MIMO) antenna system. When the size of conducting pl.ne is 0.45 λ by 0.45 λ and the height of antenna is 0.03 λ, the directive gain of 4.12 dBi and the return l.ss bandwidth of 3.67% are achieved. The proposed antenna has good diversity gain shown by the correl.tion coefficient, and becomes l.ss than 0.02 at the frequency of 2.45 GHz band when the distance between inverted l.el.ments is 0.33 λ. The resul.s show the weak mutual.coupl.ng of the proposed antenna and its performances are promising as MIMO antenna appl.cations.

关键词： l.w Profil. Antenna Inverted l Antenna MIMO Antenna Correl.tion Coefficient WIPl.D