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Rice Husk Bio-Chars as Adsorbent for Methylene Blue and Ethinylestradiol from Water

Journal of Renewable Materials 2020年第3期8卷 275-287页

作者： Jonathan Lacuesta Iris Beatriz Vega Erramuspe liji sobhana Dennis Kronlund Jouko Peltonen Soledad Gutiérrez Pedro Fardim Department of Chemical Engineering University of the RepublicJulio Herrera y Reissig 565Montevideo11300Uruguay Laboratory of Fibre and Cellulose Technology Åbo Akademi UniversityPorthansgatan 3Turku/ÅboFI-20500Finland Laboratory of Physical Chemistry and Center of Excellence for Functional Materials Åbo Akademi UniversityPorthansgatan 3Turku/ÅboFI-20500Finland Department of Chemical Engineering KU LeuvenCelestijnenlaan 200FLeuvenB-3001Belgium

Biobased adsorbents are eco-friendly materials used for water and wastewater treatment and air *** research work explores the potential use of rice husk chars as a low-cost adsorbent for pollutants from water,such as methylene blue and *** husk chars are prepared by combustion of rice husks(RH-Char)or pre-treated rice husks(PT-Char).A third char(M-Char)supplied by a local company which uses rice husks as combustion material is also *** chars are characterized by field emission scanning electron microscopy(FE-SEM)in conjunction with energy dispersive X-ray spectroscopy(EDX),X-ray powder diffraction(XRD),and zeta-potential *** three bio-chars are tested as adsorbent for the removal of two wastewater contaminants:methylene blue(MB)and ethinylestradiol(EE2).According to the results,RH-Char and PT-Char present zeta-potential values near−52 mV,whereas M-Char shows a zeta-potential value of−32 *** RH-Char and PTChar are rich in amorphous SiO_(2) and M-Char has crystalline SiO_(2)(cristobalite).The bio-chars remove MB and EE2 efficiently showing the following results for the adsorption capacity of MB(inμmol g^(−1)):769.2(RH-Char),41.2(PT-Char),and 31.7(M-Char).The adsorption capacity values for EE2(inμmol g^(−1))are:33.1(RH-Char),19.1(PT-Char),and 16.9(M-Char).The information gathered in the present work evidences the potential of rice husks bio-chars for bio-remediation and may in future contribute to the conversion of a side-stream from the rice industry into value-added materials.

关键词： Rice husk bio-char thermal treatment adsorption methylene blue ethinylestradiol

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MIP FORMULATIONS AND HEURISTICS FOR SOLVING PARALLEL BATCHING PROBLEMS

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Journal of Systems Science & Complexity 2010年第5期23卷 884-895页

作者： Udo BUSCHER liji SHEN Chair of Industrial Management Department of Business Administration and Economics Dresden University of Technology ( Technische Universitaet Dresden) Dresden 01062 Germany.

This paper addresses the scheduling problem involving batch processing machines, which is Mso known as parallel batching in the literature. The presented mixed integer programming formulation first provides an elegant model for the problem under study. Fhrthermore, it enables solutions to the problem instances beyond the capability of exact methods developed so far. In order to alleviate computational burden, the authors propose MIP-based heuristic approaches which balance solution quality and computing time.

关键词： Batching decisions mixed integer programming scheduling.

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Analysis of fault detection method based on predictive filter approach

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Science in China(Series F) 2005年第3期48卷 335-353页

作者： liji ZHANGHongyue SchoolofAutomationScience&ElectricalEngineering BeihangUniversityBeijing100083China

A new detection method for component faults based on predictive filters together with the fault detectability, false alarm rate, missed alarm rate and upper bound of detection time are proposed. The efficiency of the method is illustrated by a simulation example of a second-order system. It is shown that the fault detection method using predictive filters has a small delay, a low false alarm rate and a low missed alarm rate. Furthermore the filter can give accurate estimates of states even after a fault occurs. The real-time estimation provided by this method can also be used for fault tolerant control.

关键词： fault detection nonlinear systems predictive filters false alarm rate missed alarm rate detection time.

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Regional cerebral metabolic changes after acupuncture by FDG PET: effects and methodology

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Nuclear Science and Techniques 2002年第4期13卷 224-229页

作者： GUANYi－Hui liji 等 PETCenter HuashanHospitalFudanUniversityShanghai2000235 DepartmentofChineseTraditionalMedicine HuashanHospitalFudanUniversityShanghai200040 PETCenter HuashanHospitalFudanUniversi

In order to investigate the therapeutic mechanisms of acupuncture points in cerebrovascular ischemic patients and normal volunteers, FDG PET was adopted. Changes in cerebral glucose metabolism and cerebral functional activity before and after electro-acupuncture treatment were studied in 12 normal volunteers and 11 cerebrovascular ischemic patients. The PET imaging was read by visual interpretation and calculated by semi-quantitative analysis. After acupuncture, cerebral glucose metabolism of the normal group is higher in the frontal lobe, temporal lobe, thalamus bilaterally and cerebellum contralaterally. The cerebrovascular ischemic patients had manifested greater response in their lesions than in their normal regions of the two tested groups, as well as than in their normal regions of the whole brain, after acupuncture treatment. The study shows that the regulatory effects of acupuncture on the central nervous system influence the brain at multiple-sections, multiple-directions and multiple-levels of brain function. Itconforms to the holistic and bi-directions regulatory laws of acupuncture.

关键词：正电子发射造影脑葡萄糖代谢物针灸

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Study on the Novel Dicyanate Ester Resin Containing Naphthalene Unit

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Chinese Chemical Letters 2004年第9期15卷 1050-1052页

作者： HongQiangYAN HongYunPENCG liji GuoRongQI DepartmentofPolymerScienceandEngineering ZhejiangUniversityHangzhou310027

The novel dicyanate ester resin containing naphthalene unit (DNCY) was synthesized, and characterized by FT-IR, 1H-NMR, 13C-NMR and elemental analysis (EA). The thermal properties of DNCY resin was studied by thermal degradation analysis at a heating rate of 10 C /min-1 in N2 and air. The DNCY resin exhibited better thermal and thermal-oxidative stability than bisphenol A dicyanate (BACY) resin.

关键词： Naphthalene unit dicyanate ester resin synthesis thermal properties.

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SECOND-ORDER DRIFT FORCES AND MOMENTS BETWEEN TWO SUBMERGED BODIES IN WAVES ON 3D METHOD

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Journal of Hydrodynamics 2005年第1期17卷 117-124页

作者： WANGJian-fang liji-de HAOJin-feng CAIXin-gong SchoolofShipbuildingEngineering HarbinEngineeringUniversityHarbin150001China ChinaShipDesignandResearchCenterCo. LtdBeijing100085China MarineDesignandResearchInstituteofChina Shanghai200011China

Two near field methods, namely the integral method and differential method, were presented for giving second order mean drift forces and moments between two fixed submerged bodies in regular waves. For the integral method, with a series of mathematical manipulations, second order drift forces and moments could be easily expressed by distributed sources which could be calculated by source distribution techniques with the assumption that the amplitude of ship motions are small on the basis of the linear 3D frequency theory. For the differential method, drift forces and moments could be expressed by the derivative of velocity potential with respect to space coordinate. Because two bodies would behave as a single body while the clearance is very large, the numerical results of one sphere in such case were given and compared with analytical results of a single sphere which does not involve the effect of free surface. When submerged depth becomes enough large, a good agreement can be reached. Then the integral method was used to predict the second order drift forces and moments of two submerged spheres and spheroids with a small lateral separation distance in waves compared with the numerical results obtained by the differential method and they agree well. By comparison, it indicates the interaction effects between two submerged bodies have a profound influence on the drift forces and moments. In this paper, the forward speed effect on submerged spheres was also considered.

关键词： near-field method integral method differential method mean drift forces and moments two submerged bodies 3D source distribution technique

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Vibrational Modes Analysis of Poly （Vinylidene Fluoride—Trifluoroethylene）

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Chinese Physics Letters 2003年第6期20卷 921-923页

作者： liji-Chao WANGChun-Lei ZHONGWei-Lie LIZheng-Fa SchoolofPhysicsandMicroelectronics StateKeyLaboratoryofCrystalMaterialsShandongUniversityJi'nan250100

The ground state geometry and vibrational modes of poly (vinylidene fluoride-trifluoroethylene) [P(VDF-TrFE)] molecular chains have been investigated by ab initio molecular orbital calculation. The gauche bonds in P(VDF-TrFE) are introduced by TrFE monomers. The vibrational modes are localized within all-trans segments. These results cause the infrared absorption weaker and diffused, and may be responsible for dielectric relaxation of the copolymers.

关键词： Dielectric relaxation

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Syntheses of Novel Highly Symmetric Carbohydrates Bearing Diacylhydrazine Framework

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Chemical Research in Chinese Universities 2005年第4期21卷 457-459页

作者： YANGBo ZHANGShu-sheng LIHui-xiang liji-zhi JIAOKui CollegeofChemistryandMolecularEngineering QingdaoUniversityofScienceandTechnologyQingdao266042P.R.China

Several novel highly symmetric carbohydrates bearing a diacylhydrazine framework have been synthesized via a five-step procedure by utilizing D-glucose, D-galactose and D-xylose as the starting materials, respectively... 详细信息

关键词： Symmetric carbohydrate Bioactivity Diacylhydrazine Synthesis

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A Novel Masking Scheme for SM3 Based MAC

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China Communications 2015年第6期12卷 11-21页

作者： QU Kaige WU liji WANG An REN Yanting ZHANG Xiangmin Tsinghua National Laboratory for Information Science and Technology(TNList) Tsinghua University Institute of Microelectronics Tsinghua University

The Chinese hash algorithm SM3 is verified to be secure enough,but improper hardware implementation may lead to leakage.A masking scheme for SM3 algorithm is proposed to ensure the security of SM3 based Message Authentication Code(MAC).Our scheme was implemented in hardware,which utilizes hardware oriented secure conversion techniques between boolean and arithmetic *** evaluation based on SAKURA-G FPGA board has been done with 2000 power traces from 2000 random plaintexts with random plaintext masks and random key *** has been verified that the masked SM3 hardware implementation shows no intermediate value leakage as *** masked SM3 hardware can resist first-order correlation power attack(CPA) and collision correlation attack.

关键词： SM3 algorithm masking scheme hardware implementation power analysis boolean and arithmetic masking conversion

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Efficient collision attacks on smart card implementations of masked AES

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Science China(Information Sciences) 2015年第5期58卷 97-111页

作者： WANG An WANG ZongYue ZHENG XueXin WANG XiaoMei CHEN Man ZHANG GuoShuang WU liji Institute of Microelectronics Tsinghua University Key Laboratory of Cryptologic Technology and Information Security Ministry of EducationShandong University China Academy of Electronics and Information Technology School of Computer and Communication Engineering University of Science and TechnologyBeijing Science and Technology on Communication Security Laboratory

Collision attack is often employed against some cryptographic algorithms such as AES and *** a usual countermeasure, masking can resist such attacks to some extent. In CHES 2011, Clavier et *** a collision-correlation attack based on Pearson correlation coefficient against masking. In this paper, a collision distinguisher based on least absolute deviation against masking is proposed. Subsequently, we suggest three other distinguishers based on least square method, least exponent method, and central moment product,respectively. Our experiments and simulations show that in practice, our distinguishers based on least absolute deviation and least square method perform much better than collision-correlation attack and other proposed distinguishers in this paper. We also give four application examples, which show that even if the masks are not reused, new distinguishers are competent to collision attacks.

关键词： power analysis attack collision attack least absolute deviation least square method masking

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