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Articles 61 - 90 of 463
Full-Text Articles in Physical Sciences and Mathematics
สัตว์ป่าจากวันวานถึงวันพรุ่ง, ประยงค์ อัฒจักร
สัตว์ป่าจากวันวานถึงวันพรุ่ง, ประยงค์ อัฒจักร
Environmental Journal
No abstract provided.
รีไซเคิลกันอีกรอบ, ธัญญา พรโภคิน
ก๊าซชีวภาพจากการบำบัดน้ำเสียโรงเบียร์ด้วยระบบ Uasb, อรุณี ศุภสินสาธิต
ก๊าซชีวภาพจากการบำบัดน้ำเสียโรงเบียร์ด้วยระบบ Uasb, อรุณี ศุภสินสาธิต
Environmental Journal
No abstract provided.
อุบัติภัยในโรงงาน บทเรียนราคาแพง, นพภาพร พานิช
อุบัติภัยในโรงงาน บทเรียนราคาแพง, นพภาพร พานิช
Environmental Journal
No abstract provided.
ศักยภาพของการผลิตไฟฟ้าด้วยเชื้อเพลิงมันสำปะหลัง, สุวรรณ์ แสงเพ็ชร์
ศักยภาพของการผลิตไฟฟ้าด้วยเชื้อเพลิงมันสำปะหลัง, สุวรรณ์ แสงเพ็ชร์
Environmental Journal
No abstract provided.
สารเติมแต่งน้ำมันเชื้อเพลิงชีวภาพ, มานพ พรหมสว่างศิลป์
สารเติมแต่งน้ำมันเชื้อเพลิงชีวภาพ, มานพ พรหมสว่างศิลป์
Environmental Journal
No abstract provided.
แนะนำโครงการ : การศึกษาเพื่ออนุรักษ์และฟื้นฟูชายฝั่งทะเล กรณีชะอำ จังหวัดเพชรบุรี, ลือชัย ครุฑน้อย
แนะนำโครงการ : การศึกษาเพื่ออนุรักษ์และฟื้นฟูชายฝั่งทะเล กรณีชะอำ จังหวัดเพชรบุรี, ลือชัย ครุฑน้อย
Environmental Journal
No abstract provided.
เชื้อเพลิงสะอาด, วินัย สมบูรณ์
จับตากฎหมายใหม่เพิ่มประเภทโครงการที่จะต้องทำ Eia, อุษณีย์ ศิริสุนทรไพบูลย์
จับตากฎหมายใหม่เพิ่มประเภทโครงการที่จะต้องทำ Eia, อุษณีย์ ศิริสุนทรไพบูลย์
Environmental Journal
No abstract provided.
สัมภาษณ์พิเศษ : "นิคมอุตสาหกรรมกับสิ่งแวดล้อม" ดร.สมเจตน์ ทิณพงษ์ ผู้ว่าการการนิคมอุตสาหกรรมแห่งประเทศไทย
Environmental Journal
No abstract provided.
ศัพท์น่ารู้, พักตร์วิมล เพียรล้ำเลิศ
Frequency Computation And Bounded Queries, Richard Beigel, William I. Gasarch, Efim Kinber
Frequency Computation And Bounded Queries, Richard Beigel, William I. Gasarch, Efim Kinber
School of Computer Science & Engineering Faculty Publications
There have been several papers over the last ten years that consider the number of queries needed to compute a function as a measure of its complexity. The following function has been studied extensively in that light: Ft(xl,. . .,x0) = ,4(x,). .A(x,). We are interested in the complexity (in terms of the number of queries) of approximating Fi. Let b
Electrodeposition Of Cu-Co Multilayer Thin Films, Jiangyun Xue, Jixun Wu, Dejun Yang
Electrodeposition Of Cu-Co Multilayer Thin Films, Jiangyun Xue, Jixun Wu, Dejun Yang
Journal of Electrochemistry
A method has been developed to produce Cu-Co Multilayer from a single electrolyte by electredeposition. The effects of the concentration of copper ions,current density and the speed of rotation were investigated,and the Cu-Co electrodeposition films were analysed by TEM. AES and X-ray diffraction.The results indicated that the film was alternating pure copper and coppercobalt alloy layers. If the content of copper in cobalt layer is to be small,the concentration of its ions in solution must be small and the rotation speed must be low.
The Inhibition And Desorption Behavior Of N,N-Dipropynoxy Methyl Amine Trimethyl Phosphonate In Hydrochloride Acid, Tianbao Du, Dianzhen Cao, Jiajian Chen, Chunan Cao
The Inhibition And Desorption Behavior Of N,N-Dipropynoxy Methyl Amine Trimethyl Phosphonate In Hydrochloride Acid, Tianbao Du, Dianzhen Cao, Jiajian Chen, Chunan Cao
Journal of Electrochemistry
The performance of inhibition mechanism and desorption behavior of the N,Ndipropynoxy methyl amine trimethyl phosphonate for iron in hydrochloride acid were investigated by means of static polarization and electrochern ical impedance spectroscopy technique.The data of the polarization curves were fitted by weak-polarization fitting technique.The results show that N,Ndipropynoxy methyl amine trimethyl phosphonate possesses high inhibiting efficiency and geometric blocking effect.It is also showed that this inhibitor obeys the Frendulich adsorption isotherm.With the increase of anodic potential,a low-frequency induce arc was observed.
Surface Raman Spectra Obtained From Various Electrodeposited Transidon Metals, Jingsong Gao, Bin Ren, Qunjian Huang, Zhongqun Tian
Surface Raman Spectra Obtained From Various Electrodeposited Transidon Metals, Jingsong Gao, Bin Ren, Qunjian Huang, Zhongqun Tian
Journal of Electrochemistry
Good quality potential-dependent surface Raman spectra of pyridine were obtained for the first time from a series of transition metals,e. g.,Fe,Co,Ni,Ru,Rh,Pd and Pt,which were electrodeposited on non-SERS-active substrates.The influences of the applied potential and the nature of metal on the adsorption behaviors were discussed briefly.This result illustrates that Raman spectroscopy is becoming a more general and powerful tool to study various electrochemical interfaces.
The Effect Of Additive Ce￣(4+) On The Properties Of Composite Coating Of Co-P-Ptfe, Jiaoning Tang, Ling Huang, Zhaoxong Xie, Shibing Yao, Shaoming Zhou
The Effect Of Additive Ce￣(4+) On The Properties Of Composite Coating Of Co-P-Ptfe, Jiaoning Tang, Ling Huang, Zhaoxong Xie, Shibing Yao, Shaoming Zhou
Journal of Electrochemistry
The effect of additive Ce4+ on the properties of composite coating of Co-P-PTFE was studied in this paper.The results show that additive Ce(4+) can change the structures and properties of Co-P-PTFE composite coating. First,the surface of the compoite coating becomes smooth and the microhardness of the composite coating increased.Secondly,additive Ce(4+) decreased the corrosion current lcorr of the composite coating in the solution of 3% NaCl and increased its property of anticorrosion.Finally additive Ce(4+) can affect preferred orientation and grain size of composite coating of Co-P-PTFE. Preferred orientation of the composite varies from(100)to(110)and the grain size decreased.
The Relationship Between Ionic Conductivity And The Structure Of The New Polymer Electrolytes, Hongze Liang, Yongxiang Song, Liming Ding, Yuchen Qi, Lixia Li, Xiabin Jing, Fusong Wang
The Relationship Between Ionic Conductivity And The Structure Of The New Polymer Electrolytes, Hongze Liang, Yongxiang Song, Liming Ding, Yuchen Qi, Lixia Li, Xiabin Jing, Fusong Wang
Journal of Electrochemistry
Ionic conductivity of polymer-eutectic composed of lithium perchlorate and lithium nitrate has been studied. The effects of eutectic and polymers upon the conductivities have been discussed.The lonic conductivity depends on the eutectic properties as well as the treatment method of samples.
A Review Of Differential Electrochemical Mass Spectroscopy Techniqueⅰ.The Principle And Development Of Dems, Fujikawa Keikichi
A Review Of Differential Electrochemical Mass Spectroscopy Techniqueⅰ.The Principle And Development Of Dems, Fujikawa Keikichi
Journal of Electrochemistry
No abstract provided.
Time-Resolved Electron Spin Resonance Spectroscopy For In-Situ Studies Of Electrochemical Systems, Lin Zhuang, Juntao Lu
Time-Resolved Electron Spin Resonance Spectroscopy For In-Situ Studies Of Electrochemical Systems, Lin Zhuang, Juntao Lu
Journal of Electrochemistry
No abstract provided.
A Preliminary Study Of Electrochemically Amplified Measurement Of Gold Electrodeposition, Bingwei Mao, Caihui Shi, Xiaoqin Li, Lihua Xiong
A Preliminary Study Of Electrochemically Amplified Measurement Of Gold Electrodeposition, Bingwei Mao, Caihui Shi, Xiaoqin Li, Lihua Xiong
Journal of Electrochemistry
Gold electrodeposition onto a glassy carbon microelectrode is studied using an electrochemical amplification method. Taking the advantage that the electrochemical reduction of K2Cr2O7 has significantly higher reaction activity on gold electrode than carbon electrede,it is tentatively used to amplify the gold electredeposition current.The results show that there is a marked increase in current of gold electrodeposition in presence of K2Cr2O7 in comparison with that absent of K2Cr2O7.The electrochemical amplification method can be applied to study the electrodeposition of very in intial stage by choosing proper systems and improving experimental conditions.
Improvement Of The Anti-Interference Characteristics Of God Electrode By Using The Powder Microelectrode Technique, Chen Jian, Chuansin Cha
Improvement Of The Anti-Interference Characteristics Of God Electrode By Using The Powder Microelectrode Technique, Chen Jian, Chuansin Cha
Journal of Electrochemistry
The electrochemical behavior of ascorbic acid(AA),uric acid(UA),L-cystein(L-Cys)and acetaminophen(APAP),i.e.the main interference to the GOD electrode,were studied at the Pt,GC and powder microelectrode. Experimental results indicated that,due to the electrochemical activity of these interference,it is difficult to eliminate their interference effects by manipulation of electrede materials or working potential of the GOD electrode. However,it was found that the limiting curtents at the KB electrode are mainly controlled by mass transfer in liquid phase,so it is only related to the geometer size of the electrode,not its rcal surface area. Therefore,it is possible to enhance significantly the signal/noise ratio of the GOD electrode by …
A Study Of Ruo_2-Co_3o_4-Tio_2(60)Coating On Ti-Substrate For Chlorine Gas Evolution, Liguang Yao, Mingxian Wang
A Study Of Ruo_2-Co_3o_4-Tio_2(60)Coating On Ti-Substrate For Chlorine Gas Evolution, Liguang Yao, Mingxian Wang
Journal of Electrochemistry
The chlorine gas evolution activity,electric conductivity,service life,microstructure and surface morphology of RuO2-CO3O4-TiO2(60) coating on Ti-subetrate were studied in 0～30 m/o Co3O4 range by steady-state pelarization,x-ray diffraction,TEM and SEM methods.Active surface area of the coating was also evaluated. The in fluences of coating composition,micrortructure and surface morphology on chlorine gas evolution activity and active surface area of the coating were discussed in detail.As a result,sole rutile-type solid solution of RuO2,CO3O4 and TiO2 which showed better chlorine gas evolution activity,electric conductivity and service life was found in ca. 0～10 m/o Co3O4 range. Traditional RuO2-TiO2/Ti anedes being widely used in chlor-alkali industry could …
A Study On Electrochemical Oxidation Of Reduced Nicotinamide Coenzyme Nadh In Organic Media, Fangzu Yang, Wuhuihuang Wuhuihuang, Xushukai Xushukai, Zhoushsomin Zhoushsomin
A Study On Electrochemical Oxidation Of Reduced Nicotinamide Coenzyme Nadh In Organic Media, Fangzu Yang, Wuhuihuang Wuhuihuang, Xushukai Xushukai, Zhoushsomin Zhoushsomin
Journal of Electrochemistry
The behaviour of electrochemical oxidation of the reduced nicotinamide coenzyme NADH on glassy carbon was studied and some kinetic parameters were measured by means of voltammometry in the N-dimethylformamide(DMF)and 1,4-dioxane media respectively. The eletrochemical oxidation of NADH shows completely irriversable both in the two solvents,and the diagnostic experiments support that the process involves a fast chemical step.The oxidation rate and the diffusion coefficient of N ADH in DMP are smaller than those in 1,4-dioxane,but the response current is more stable in DMF. The experimental results are discussed by solvent effects.
Study On The Ionic Conductivity Of Comb Polymer Electrolytes, Liming Ding
Study On The Ionic Conductivity Of Comb Polymer Electrolytes, Liming Ding
Journal of Electrochemistry
A comb polymer(CP350)with oligo-oxyethylene side chains was prepared from methyl vinyl ether/maleic anhydride copolymer.The ionic conductivity of CP350/LiAsF6 and CP350/LiPF6 complexes was studied as a function of temperature and[Li]/[EO]ratios.A equivalent circuit was given to interpret complex impedance spectra. At 25℃,the ionic conductivity maxima of the two systems are 1.38×10(-4),8.32×10(-5)S/cm respectively. The appearance of the conductivity maxima has been interpreted as being due to the effect of microviscosity on ion transport. lonic conduction displays non-Arrhenius behaviour.The temperature dependence of ionic conductivity was attributed mainly to the temperature dependence of charge carrier hopping,ion pairing and micro Brown motion of side chains.The larger …
Studies On The Charge And Discharge Reaction Of Li/Lini_(0.3)Co_(0.7)O_2 Battery, Fupjng Zhang
Studies On The Charge And Discharge Reaction Of Li/Lini_(0.3)Co_(0.7)O_2 Battery, Fupjng Zhang
Journal of Electrochemistry
The charge and discharge reaction of Li/LiNi0.3Co0.7O2 battery have been studied by using CV,CT,XRD and GCP.It is shown that the discharge capacity of the cell reaches 120-140 mA·h·g(-1) in the 4.30-3.00 V in 1 mol/L LiClO4/PC electrolyte system. The discharge mechanism involve a two-step Li+ intercalation reaction. The thermodynamic data such as △G,△S,△H,of the reaction are given. Furthermore,the changes of the Dor σi of Li+ with its composition have been discussed.
Electrochemical Studies On Chemical Polishing Of Copper, Keping Han, Jingli Fang
Electrochemical Studies On Chemical Polishing Of Copper, Keping Han, Jingli Fang
Journal of Electrochemistry
Changes in specular reflectivity,weight loss,surface topograph and potential with time and current-potential curves during chemical polishing were determined.The results showed that chemical polishing was composed of the etching,polishing and pitting stage.The passivating film theory also applied to the chemical polishing.