PUBLICATIONS

PAPERS

 

 

A.NEREN ÖKTE, M. SOWA REŞAT and Y.İNEL 

''Photocatalytic Degradation of 1,3-Dihydroxy-5-Methoxybenzene in Aqueous Suspensions of TiO2: An Initial Kinetic Study" Journal of Catalysis 198, 172 (2001)

 

Abstract

Photocatalytic degradation of 1,3 -dihydroxy-5-methoxybenzene (1,3-DHMB) is investigated in the presence of TiO2. Effects of initial concentration of 1,3-DHMB, pH of the medium, irradiation time, and temperature are examined. Degradation of 1,3-DHMB obeys zero-order kinetics. Following the formation of CO2, the reaction rate constant, k, is found as 217 mu mol m(-3) s(-1) and the adsorption constant, K, is found as 4.22 m(3) mol(-1). The highest degradation of 1,3-DHMB and the highest concentration of CO2 are both obtained at pH 9.0. The apparent activation energy is calculated as 17.1 kJ/mol. For the route of degradation, a mechanism is postulated.

 

A.NEREN ÖKTE, M. SOWA REŞAT and Y.İNEL 
"Influence of Hydrogen Peroxide and Methanol on the Photocatalytic Degradation of 1,3-dihydroxybenzene" Toxicol Environ Chem., 79, 171 (2001) 

 

Abstract

Effects of scavengers; hydrogen peroxide, H2O2 (an electron scavenger), and methanol, CH3OH (a hole scavenger) are examined for the photocatalytic degradation of 1,3‐dihydroxybenzene (1,3‐DHB), by following the carbon dioxide (CO2) formation in a gas recycling reactor. Addition of H2O2 as an electron trap enhances the CO2 formation rate for 1,3‐DHB, but there is a limit for the concentration of H2O2 above which hydroxyl radicals (*OH) are consumed in other reactions rather than taking part in oxidative routes. CH3OH being an hole scavenger decreases the degradation rate by reacting with photogenerated holes as well as *OH radicals.

 

A.NEREN ÖKTE, M. SOWA REŞAT and Y.İNEL 
"Quantum Yields and Relative Photonic Efficiencies of Substitude 1,3-dihydroxybenzenes” J.Photochem. Photobiol. A: Chem.134, 59 (2000)

 

Abstract

1,3-dihyroxybenzene (1,3-DHB) is selected as the standard probe and Degussa P25 TiO2 as the standard photocatalyst for the determination of quantum yields of 3,5-dihydroxytoluene (3,5-DHT), 1,3-dihydroxy-5-methoxybenzene (1,3-DHMB), and 3,5-dihydroxybenzoic acid (3,5-DHBA) based on the relative photonic efficiency concept. A detailed analysis about the incident photon flu and rate of formation of CO2 for the photocatalytic degradation of 1,3-DHB is done. Fraction of Light absorption is measured as a function of incident photon flux and TiO2 loading. When a TiO2 concentration of 1 g/l and an incident photon flux of 

10.8 x 10(-6) Einstein/min are used, the quantum yields for the photocatalytic degradation of I,3-DHB, based on disappearance of I,3-DHB, and formation of CO2 are found as 0.06 and 0.34, respectively. The difference between two quantum yields indicate the formation of intermediates during the photodegradation process. 

The effect of reactant concentration, pH of the medium and temperature of the system are investigated to determine the relative efficiencies of the reactant molecules. Quantum yields of the reactants are found from phi=zeta(r)phi(1,3-DHB) at their natural pH values as 0.22, 0.35, and 0.38 for 3,5-DHT, 1,3-DHMB and 3,5-DHBA, respectively. 

 

Y.İNEL and A.NEREN ÖKTE 
"TiO2 Sensitized Photomineralization Kinetics of Pthalic Anhydride" Chemosphere 36, 2969 (1998)

 

Abstract

The photomineralization of phthalic anhydride (PA) in aqueous solutions over TiO2 particles has been investigated under UV-illumination, and then kinetics of CO2 generation have been followed. Effects of the aqueous suspension pH, PA concentration, temperature, irradiation time, and light intensity are examined. A correction term, alpha(T), the decrease in the solubility of CO2 with increasing temperature, is taken into account. The activation energy is found to be 3.19 kJ/mol. A quantum yield of 0.22 for CO2 formation is also calculated.

 

Y.İNEL and A.NEREN ÖKTE 
"Photodegradation Kinetics of Adipic Acid in the presence of TiO2" Toxicol Environ Chem., 65, 123 (1998)

 

Abstract

The kinetics of CO2 photogeneration from adipic acid (AA) sensitized by TiO2 were studied in a gas recycling reactor. The rate of formation of CO2 was examined as a function of [AA], [TiO2], pH of the aqueous suspension, temperature, irradiation time, flow rate, and light intensity. It is found that the rate of CO2generation conforms to a Langmuir‐Hinshelwood type of kinetic scheme. Including a correction term α(T) which accounts for the decrease in the solubility of CO2 with increasing temperature, the activation energy is found to be 14.38 kJ/mole. We propose a possible mechanism for the kinetics of CO2 photogeneration from adipic acid. Based on this mechanism a quantum yield of 0.27 for the CO2 formation is calculated. 

 

Y.İNEL and R.İŞERİ 
“The Octanol-Water Partition Coefficient of Benzene Derivatives Based on Three Dimensional  Structure Directed Molecular Properties” Chemosphere, 35, 993 (1997)

 

Abstract

Three dimensional (3-D) structural molecular properties such as the solvent accessible surface area, heat of formation in water, and heat of formation in vacuum was calculated for 100 benzene derivatives and a correlation between calculated and experimental logKow values are established.

 

I.AKMEHMET BALCIOĞLU and Y.İNEL 
“Photocatalytic Degradation of Organic Contaminants in Semiconductor Suspensions with Added H2O2” J.Environ.Sci.Health, A31,123 (1996)

 

Abstract

The photocatalytic oxidation of aqueous solutions of phenol, p-nitrophenol, 4-chlorophenol, aniline, hydroquinone and pyridine have been studied in gas recycling reactor utilizing TiO2 as photocatalyst in the presence and in the absence of hydrogen peroxide. The rate of oxidation of organics to CO2 was measured by using natural and artificial near u.v. light. The disappearance of each solute obeys pseudo first order kinetics with respect to organic whereas the rate of mineralization is zeroth order. While the addition of small amounts of hydrogen peroxide significantly enhanced the photomineralization rate of all organic compounds, high concentration of it inhibited the reaction. The optimum concentration of H2O2 ranges from 1x10(-2) to 0.5x10(-2) M for 10(-4) M organic solutions. The complete mineralization for 10(-4) M of each organic resulted in approximately 50-110 minutes whereas this period was shortened to 6-28 minutes by the addition of an optimum amount of H2O2.

 

A.NEREN ÖKTE and Y.İNEL 
"Photocatalytic Degradation of Malonic Acid in Aqueous Suspensions of Titanium Dioxide: An Initial Kinetic Investigation of CO2 Photogeneration" J.Photochem. Photobiol. A: Chem.96, 175 (1996)

 

Abstract

The photocatalytic oxidation of malonic acid in aqueous suspensions of TiO2 was investigated by following the formation of CO2. The rate of formation of CO2 is affected by the pH of the aqueous suspension, TiO2 loading, malonic acid concentration, temperature, irradiation time, flow rate and light intensity. The disappearance of malonic acid fits a Langmuir-Hinshelwood kinetic model. Rate constants were calculated by including a correction term alpha(T) to fake into account the decrease in the solubility of CO2 with increasing temperature. The activation energy is 9.99 kJ mol(-1). A quantum yield of 0.26 for CO2 formation was estimated from the proposed mechanism.

 

A.NEREN ÖKTE and Y.İNEL 
"Photocatalytic Degradation of Succinic Acid in Aqueous Suspensions of Titanium Dioxide: An Initial Kinetic Investigation of CO2 Photogeneration" Toxicol Environ Chem., 55, 115 (1996) 

 

Abstract

Photocatalytic oxidation of succinic acid in aqueous suspensions of TiO2 has been investigated in a gas recycling reactor, following the CO2 formation. The rate of formation of CO2 was examined as a function of pH of the aqueous suspension, TiO2 loading, the concentration of succinic acid, temperature, irradiation time, flow rate, and light intensity. It is found that the rate of CO2 generation conforms a Langmuir‐Hinshelwood kinetic model. Rate constants were calculated by including a correction term α(T) which stands in order to take into account the decrease in the solubility of CO2 with increasing temperature. Activation energy is found to be 15.59 kJ/mole. A quantum yield of 0.27 for the CO2 formation has been estimated from the proposed mechanisms. 

 

M.TÜRKER SAÇAN and Y.İNEL 
“Application of the Characteristic Root Index Model to the Estimation of n-Octanol/Water Partition Coefficients. Polychlorinated Biphenyls” Chemosphere, 30, 39 (1995)

 

Abstract

The ability of the Characteristic Root Index (CRI) to predict the n-octanol/water partition coefficients (K-ow) of polychlorinated biphenyls (PCBs) has been demonstrated. The CRI for 58 congeners were calculated from the roots of the characteristic polynomial obtained from a square matrix comprising all possible orders of valence connectivity index - except zero order - for a congener as the entry. The correlation proposed for the estimation of K-ow of PCBs based on the CRI model contains only one variable and predicts log K-ow with high regression coefficient (r=0.998) and may be regarded satisfactory for environmental applications.

Y.İNEL and A.İTKEN 
“Determination of the Absorption Coefficient of Perfluoropropanoic Anhydride at 147 nm” J.Photochem. Photobiol. A: Chem.,77, 93 (1994)

 

Abstract

The absorption coefficient of perfluoropropanoic anhydride at 147 nm was determined by measuring the saturation ion current in trimethylamine, induced by the absorption of photons transmitted through perfluoropropanoic anhydride, using an Xe resonance lamp attached to two Pyrex cells in series. k was found to be 297±74 (atm at 298 K)−1 cm−1 (base e).

 

N.DİRİLGEN and Y.İNEL 
“Cobalt-Copper and Cobalt-Zinc Effects on Duckweed Growth and Metal Accumulation” J. of Environ. Sci. Health (A), A29,63 (1994)

 

Abstract

Zn+2, Cu+2 and Co+2 were added to Jacob nutrient medium with constant pH value at concentrations ranging from 0.10–10.0 ppm, 0.20–2.00 ppm and 0.20–20.0 ppm, respectively. The IC50's for these metals as well as their effects on the growth and the accumulation efficiency by Lemna minor L. were determined. The IC50's for Co+2, Zn+2and Cu+2 were 16.90, 10.00 and 1.54 ppm, respectively. At 0.20–2.00 ppm concentrations, the potential of Lemna minor L. to accumulate these metals with respect to their inital concentrations in the medium was in the following order: Co+2 > Zn+2 > Cu+2. The effects of the metal pairs of Co+2‐Cu+2 and Co+2‐Zn+2 at concentration levels ranging from 0.10 to 2.00 ppm were also tested. The accumulation of Zn+2was stimulated by Co+2 and the accumulation of Co+2 was inhibited by Zn+2. Also a decrease in the growth of Lemna minor L. was observed, especially at 2.00 ppm. The accumulation of Co+2 was suppressed by Cu+2, whereas the accumulation of Cu+2 was slightly promoted by Co+2. The growth Inhibition effect of Cu+2 was not changed by Co+2 at 0.10 through 1.00 ppm, but at 2.00 ppm, Co+2 reduced the growth Inhibitory effect of Cu+2.

 

N.DİRİLGEN and Y.İNEL
“Zinc-Copper Effects on Growth and Metal Accumulation in Duckweed” Bullet. of Environ. Contam. and Toxicology, (1994)

 

Abstract

Heavy metal pollutants are known to be quıte toxic to a wide variety ol aquatic plants. Lemna (duckweed), due to Its spectal features. is sought as a test organlsm for aquatic pollutant studies and for wastewater treatment(Cuney et al. 1981; O' Brien 1981: Nasu and Kugtmoto 1981: Taraldsen et al. 1990). Lemna grows rapidly and reproduces vegetatively: its biomass is measured easily. It is adaptable to various aquatic conditions: It extacts and also accumulates metals in its front bodies. Among the metals, Cu is classified as extremley toxic(Nasuet al. 1983) and zn is classified as moderately toxic to Lemnal (Wang 1986). it is reported that both Cu and zn concentrations In the medium have a great tmpact on the growth responses and the physlologıcal processes in Lemna. Deficiences in Cu and zn resulted in chlorosls of L.Mlnor fronds and Low ooncentrations of Cu interfered wlth the floraal inductlon in L.Mlnor and L.gibba (Hillman 1961). Excess Cu inhiblited both frond growtth and frond multlplication of L.paucicostata (Nasu et al. 1984) and lt decreased the content of chloropyll α and photosynthetic CO2 uptake ln L.Minor (Filbln and Hough 1979). In water bodies, metals aıways are present in combination. Consequently, metal pair interaction is a factor to be consldered. However, there are few studies on the effects of metal pair Interactions on duckweed growth and metal aceumulation (Hutchinson and Czyrska 1975; Nasu and KugImoto 1984; Mo et al. 1988; Jain et al.I989). The purpose of this study was to investigate the effects of Increased concentrations of zn and Cu in combınatıon on growth and metal accumulation by Lemna mlnor L. under Controlled laboratory canditions. Zn and Cu were chosen slnce they are known as essentlal trace elements for duckweed up to a certain concentration; above that growth inhibition might occur. 

 

Y.İNEL and D.ERTEK (HACIU) 
“Photocatalytic Deposition of Bismuth(III) Ions onto TiO2 Powder” J.Chem. Soc. Faraday Trans., 89, 129 (1993)

 

Abstract

Photochemical reduction of BiIII on illuminated TiO2 suspensions has been investigated. The photoreduction leads to the formation of metallic Bi on TiO2. Adsorption of BiIII species in the dark was examined. The adsorption parameters were determined using the classical Langmuir adsorption isotherm. The photocatalytic deposition rate was determined under various experimental conditions, such as pH, dissolved oxygen and BiIII initial concentration. The effect of alcohols as hole-scavengers was also investigated. It was found that addition of hole-scavengers increases the efficiency of the photocatalytic deposition process, by impeding recombination of holes and electrons on the catalyst's surface.

 

I.AKMEHMET BALCIOĞLU and Y.İNEL 
“Photocatalytic Degradation of 4-chlorophenol in Aqueous TiO2 Suspensions: the Influence of H2O2 on the Photocatalytic Mineralization Rate” Doğa-Tr.J. of Chemistry, 17, 125 (1993)

 

M.TÜRKER SAÇAN and Y.İNEL 
“Prediction of Aqueous Solubilities of Polychlorinated Biphenyls Related to Molecular Structure” Doğa-Tr.J. of Chemistry, 17, 188 (1993)

 

Y.İNEL 
“Absorption Coefficient Determination of Nitrogen Trifluoride at 147 nm” J.Photochem. Photobiol. A: Chem.,70, 1 (1993)

 

Abstract

The absorption coefficient of nitrogen trifluoride at 147 nm was determined using two Pyrex cells in series. Measurement of the saturation ion current in trimethylamine, induced by the absorption of photons transmitted through the LiF window separating the photoionization and photolysis cells, provides an easy and accurate measurement of the fraction of light absorbed by nitrogen trifluoride in the photolysis cell (R. L. Lilly, R. E. Rebbert and P. J. Ausloos, J. Photochem., 2 (1973/1974) 49). The absorption coefficient of nitrogen trifluoride was found to be k=136±3 (atm at 298 K)−1 cm−1 (base e).

 

N.İNCE and Y.İNEL 
“A Semi-Empirical Approach to Relate the Volatilization Rates of Organic Chemicals to Their Physical Properties” Wat.Res.25, 903 (1991)

 

Abstract

The experimentally determined volatilization/reaeration ratios for ten organic chemicals of environmental concern are related, to specifically selected physico-chemical properties of the chemical, by the preassumption of a multi-variate linear relation. The selected model is then tested for reliability in a different sample universe whose published values of volatilization/reaeration rate ratios are compared with values calculated by using the estimated coefficient of the model equation.

 

V.AVİYENTE and Y.İNEL 
“Application of RRKM Theory to the C-C Bond Ruptur in Some Fluoroethanes” Doğa Tr. J. Chem. 13, 3, 207 (1989) 

 

Z.ÇINAR and Y.İNEL 
“Photochemical Reactions of Carbon Suboxide” Chemistry and Industry (Turkish Chemical Society) 31, 159, 49 (1989)

 

M.ATALAY and Y.İNEL 
“A New Method in Pollution Studies: Bioelectric Action Potential Method” Bogaziçi University Journal, 8-9, 3 (1980-1981)

 

Y.İNEL and M.ATALAY 
“The Investigation of the Biological Actirity of Simple C6- Hydrocarbons on Crayfish “Astacus Leptodactylus” and Correlation with Physicochemical Parameters” Bogaziçi University Journal, 8-9, 27 (1980-981)

 

M.ATALAY and Y.İNEL 
''The Use of Structure Activity Relationships to Monitor Water Pollution by Hydrocarbons'' J.Enviroment News (Bogaziçi University),  67 , 24 (1980)

Y.İNEL and F.MENEMENLİ 
''The Critical Bond Lengths in Difluoroamino Alkyl Radical Combination Reactions'' Boğaziçi University Journal, 7 , 71 (1979)

 

Y.İNEL 
“The Vacuum Ultraviolet Photolysis of Trifluoroethylene with Xenon Resonance Line at 147 nm”. 

Bogaziçi University Journal, 7, 65 (1979)

 

Y.İNEL 
''The Quantitative Study of Formation, Deactivation, and Neutralization of C4 H8+ Ions in Cyclo-butane Photoionization at 104.8 106.7 nm (11.6-11.8 eV)'' Proceedings, Jubilee Meeting of the Polish Chemical Society, Wroclaw, Poland, Sept. 12 15 (1979)

 

P.CADMAN, Y.İNEL and A.F.TROTMAN-DICKENSON  
“Reactions of Alkyl Radicals with  Nitrogen Trifluoride” J. Chem. Soc. Faraday Trans. I. 74 , 2301 (1978) 

 

Abstract

Photolysis of mixtures of nitrogen trifluoride with the appropriate ketones (in the temperature range 303–486 K) has enabled the reactions of CH3, CF3, C2H5, i-C3H7 and t-C4H9 radicals with nitrogen trifluoride to be studied. With the smaller radicals only the abstraction of difluoroamino radicals is important, but with i-C3H7and t-butyl both difluoroamino and fluorine abstraction occur. The Arrhenius parameters are given. The disproportionation—combination ratio for methyl and t-butyl radicals was found to be 0.83 ± 0.02.

 

Y.İNEL 
“The Effects of Heavy Metals on Human Health and Enviroment as a Pollutant” Symposium on Air Pollution in Cities, Istanbul,Turkey, January 17-19, (1978)

 

Y.İNEL 
“The Control, Inspection and Safety of Chemicals in the Enviroment on a National Scale” Coordination Conference of Enviromental Problems in Marmara Region, Istanbul, Turkey, March 21-22, (1978)

 

Y.İNEL 
“Calculation of Thermodynamic Properties of Some Alkyl Difluoroamines and Fluorides”. Boğaziçi University Journal,5 , 9 (1977)

 

Y.İNEL, U.SEBUKTEKIN and N.KURT 
“Cadmium, Lead and Zinc Accumulations in Soils Along Ankara Highway” TÜBiTAK, VI. Science Congrees, Ankara, Turkey, Oct. 17-21, (1977)

 

Y.İNEL 
“Kinetic  Discussion  of  the Disproportionation and Combination Reactions of Difluoroamino Radicals 

with Organic Radicals” Chemistry and Industry (Turkish Chem.Soc.), 24,201 (1976)

 

U.SEBÜKTEKİN and Y.İNEL 
“The Determination of Vaporization Heat of Simple Alcohols by Kinetic Method” Chemistry and Industry (Turkish Chem.Soc.), 24,289 (1976)

 

U.SEBÜKTEKİN and Y.İNEL 
“The Airbone Lead Contamination in the City of Istanbul” National Symposium on Solutions of the Pollution Problems of Haliç (Golden Horn), Istanbul, Turkey, Feb. 11 13, (1976)

 

Y.İNEL 
“The Gas phase Photolysis of Ethylene and Cyclo-butane in the Photoionization Region” Chemistry and Industry (Turkish Chem. Soc.), 23,111 (1975)

 

Y.İNEL  
“The Radiolysis of Ethylene and Cyclo-butane” Chemistry and Industry (Turkish Chem.Soc.), 23,175 (1975)

 

Y.İNEL 
“Vacuum Ultraviolet Photolysis of Cyclo-butane with Argon Resonance Radiation at 104.8 106.7 °A”. Boğaziçi University Journal, 3, 13 (1975)

 

Y.İNEL 
“The Quantitative Study of the Collisional Deactivation of C4H8+ Ion” Boğaziçi University Journal, 3, 35 (1975)

 

U.SEBÜKTEKİN and Y.İNEL 
“The Airbone Lead Contamination in the City of Istanbul” Bogaziçi University Journal, 3, 49 (1975)

 

Y.İNEL 
“The Vacuum-Ultraviolet Photolysis of Ethyl Fluoride at 147nm” TÜBiTAK, V. Science Congress, Izmir, Turkey, Sept. 29 Oct. 2, (1975)

 

Y.İNEL and U.SEBÜKTEKİN  
“Vaporization Heat of Simple Alcohols by Kinetic Method” TÜBiTAK, V. Science Congress, Izmir, Turkey, Sept. 29 Oct. 2, (1975)

 

Y.İNEL 
“The Calculation of Mean Ionization, Mean Excitation and Mean Subexcitation Electron Energies 

in Gases by Optical Approximation” Boğaziçi University Journal, 2, 49 (1974).

 

Y.İNEL and N.DALFES 
“Statistical Mechanical Calculation of Thermodynamic Functions of Biochemical Molecules” Boğaziçi University Journal, 2, 63 (1974)

 

Y.İNEL 
“Semi emprical Calculations of the Primary Yields in the Gas Phase Radiolysis of Gases” Boğaziçi University Journal, 1,95 (1973).

 

E.TSCHUIKOW-ROUX, Y.İNEL, S.KODAMA and A.W.KIRK 
“Vacuum Ultraviolet (147 nm) Photolysis of Carbon Suboxide in the Presence of Methane” J. Chem. Phys.

56, 3238 (1972)

 

Abstract

The vacuum‐ultraviolet photolysis of C3O2 in the presence of CH4 and Ar has been investigated at 25°C using the 147 nm Xe resonance line. The principal gaseous reaction products include CO, C2H2, C2H4, and some C2H6. The yield of acetylene decreases with increasing methane or inert gas pressure while the opposite trend is observed in the case of ethylene. Diagnostic experiments with added H2 and CO have shown that excess H2 effectively suppresses C2H4 formation, while excess CO virtually eliminates the production of C2H2. The results are interpreted in terms of the participation of 1D and 3P carbon atoms and are consistent with recent flash photolysis‐kinetic spectroscopy work on the C3O2∕CH4 system. It is proposed that C2H2 formation can be attributed entirely to the reaction

C(1D) + CH4 → C2H2 + H2

whereas C2H4 results from reaction of methane with ground state C2O(3Σ) radicals, producted in a secondary process

C(3P) + CO + M → C2O + M

C2O(1D) + CH4 → C2H4 + CO

Both Ar and CO deactivate C(1D) to C(3P), however, relative to its rate of attack on methane, the deactivation of C(1D) by argon is an inefficient process.

 

S.C.CHAN, Y.İNEL and E.TSCHUIKOW-ROUX 
“Primary Processes in the Vacuum Ultraviolet Photolysis of Ethyl Fluoride at 147 nm” J. Can. Chem. 50, 1443(1972).

 

Abstract

The photolysis of C2H5F at 147 nm was studied at room temperature. The principal products include C2H3F, C2H2, C2H4, CH4 and C2H6. The principal primary photochemical reactions involve the molecular elimination of HF and H2, and, to a lesser exıent, C-F and C-C bond fission. The effect of reactant and added inert gas pressure on the product yields has been investigated and it was found that the stabilization/decomposition ratio, C2H4 /C2H2, displays opposite pressure dependence with ethyl fluoride and argon. This result is interpreted in terms of the higher energy transfer efficiency of the C2H5F molecule. 

 

P.S.GILL, Y.İNEL and G.G.MEISELS 
“Collisional Deactivation of Intermediate C4H8+ Ion in the Photolysis of Ethylene at 1048-1067 °A”. J. Chem. Phys. 54 , 2811 (1971).

Abstract

The vacuum ultraviolet of photolysis of ethylene with argon resonance radiation leads to ion formation with a quantum yield (ionization efficiency) of 0.218 ± 0.015. Ethylene ion immediately forms an adduct with ethylene with an internal energy of 58 kcal/mole above the most stable 2‐butene or methylpropene ion configurations. Neutralization of the C4H8 + ions by charge exchange with toluene, dimethylamine, or trimethylamine yields 2‐butene and methylpropene as neutral counterparts to ions assumed to have a similar structure. The relative abundance of the isomers is dependent on the concentrations of charge acceptor and of inert gases. Results are interpreted in terms of an equilibrium between the ionic precursors of 2‐butene and methylpropene. A transition state corresponding to a loose methylcylopropane ion structure, with a barrier of about 30 kcal/mole, is postulated for the isomerization. The effects of inert additives and ethylene, which does not react rapidly with C4H8 + ion, are ascribed to successive energy loss by collision and a resultant change in the equilibrium constant. This model is developed quantitatively and it is shown that, within the framework of some limiting assumptions, energy transfer in nonreactive ion–molecule collisions is considerably less than anticipated on the basis of an intimate complex. This is ascribed to inefficient energy loss for ion–molecule collisions at large impact parameters where redissociation occurs rapidly as a result of small increases in over‐all angular momentum.

 

Y.İNEL, A.SIDDIGI and G.G.MEISELS 
“The Photolysis of Ethylene at 1216 °A”. J. Phys. Chem. 75 , 1317 (1971).

Abstract

Ethylidene (CH,CH) is a primary species in the photolysis of diazoethane, methylketene, and methyldiazirene and these systems have been studied to investigate its reactions. It has also been suggested that ethylidene is an intermedinte in the photolysis of solid ethylene at 1470 A as evidenced by the formation of methylcyclopropene. This product was not observed in the gas-phase photolysis at the same wavelength and this was ascribed to a rapid isomerization of the ethylidene structure to an excited ethylene incapable of the addition reaction to ethylene typical of a carbene structure. Moreover, it was suggested that the rate of isomerization may depend on internal energy. While the vacuum ultraviolete photolysis of ethylene at 1236 A has been reported, analysis forsmall yields of C4 hydrocarbons was not made. We have therefore photolyzed ethylene at, 1216 A .

 

P.CADMAN, Y.İNEL, A.F.TROTMAN-DICKENSON and A.J.WHITE  
“The Rate of Cross-Combination of Difluoroamino Radicals with Ethyl and Iso-propyl Radicals”.  J. Chem. Soc. (A) 1353 (1971).

 

Abstract

The rates of the cross combination reactions of difluoroamino-radicals with ethyl and iso-propyl radicals have been determined by the photolysis of the dialkyl ketone in the presence of small concentrations of tetrafluorohydrazine. The rate constants were found to be given by: [graphic omitted]. These cross combination parameters have been compared with other radical–difluoroamino-radical cross combination reactions. From thermodynamic data the Arrhenius parameters for the decomposition reaction of the corresponding alkyl difluoroamines have been evaluated. The primary step in the photolysis of diethyl ketone is found to give a propionyl radical and an ethyl radical rather than giving directly two ethyl radicals and carbon monoxide.

 

P.CADMAN, Y.İNEL, and A.F.TROTMAN-DICKENSON 
“Disproportionation-Combination Ratios of Difluoroamino Radicals with Iso-propyl and with t-Butyl Radicals”. J.Chem. Soc. (A) 2859 (1971). 

 

Abstract

Di-isopropyl and methyl t-butyl ketones were photolysed separately in the gas phase between 296–485 K in the presence to tetrafluorohydrazine. The disproportionation–combination ratios of isopropyl and t-butyl radicals with difluoroamino-radicals were found to be: Δ(NF2, i-C3H7)=(0·0535 ± 0·005) exp [+(595 ± 300)/RT]Δ(NF2, t-C4H9)=(1·98 ± 0·20) exp [–(9140 ± 330)/RT], where R= 8·31 J mol–1 K–1. From the previously measured rate of combination of isopropyl radicals with difluoroamino-radicals, the rate of disproportionation was calculated to be: log k(ml mol–1s–1)= 9·09 – 5880/2·3RT.

 

Y.İNEL 
“Semi empirical Calculation of Effective Atomic Numbers Based on the Optical Approximation”. J. Chem. Soc.(A) 3769 (1971)

 

Abstract

A simple approach based on the optical approximation has been made to calculate the effective atomic numbers in simple hydrocarbon gases. The experimental data on ionization, i.e., the Wvalue and |M′|2, the dipole-matrixelement squared for ionization, have been used for the computation. The calculated values of effective atomic numbers are compared with experimental results based on studies in binary gas mixtures under α-particle irradiation, and with Hurst parameters. The results obtained in the present work are found to be insensitive to approximations in the computational procedure. The dependence of these parameters in general on the degradation spectrum is also discussed. 

 

G.G.MEISELS, Y.İNEL and A.SIDDIGI 
“Photolysis of Cyclobutane at 1048-1067 A° (11.6-11.8 eV)”. Abstract of  Papers of the 161st  National Meeting, Los Angeles, California, March 28 April 2, (1971).

 

E.TSCHUIKOW-ROUX, Y.İNEL, S.KODAMA and A.W.KIRK  
“Vacuum Ultraviolet Photolysis of Carbon Suboxide in the Presence of Methane”.  Abstract of Papers of the ACS Southwest Region Meeting,San Antonio, Texas, dec.13, (1971).

 

P.CADMAN, Y.İNEL and A.F.TROTMAN DICKENSON 

“Disproportionation of Trifluoromethyl and Isopropyl Radicals”. J. Chem. Soc.(A) 1207 (1970).

 

Abstract

Mixtures of hexafluoroacetone–di-isopropyl ketone were photolysed between 32 and 115°. The disproportionation–combination ratio of trifluoromethyl and isopropyl radicals was measured. Allowance was made for the consumption of the disproportionation product, propene, by trifluoromethyl radical addition. The disproportionation–combination ratio was found to be 2·2 ± 0·2 and independent of temperature. This value is considerably greater than that found in similar nonfluorinated radicals. A re-examination of the disproportionation–combination ratio of isopropyl radicals gave a value of 0·61 ± 0·1.

 

Y.İNEL 
“Comments on the Kinetics of the Addition of Ethyl, Iso-propyl, n-Butyl and Iso-pentyl Radicals to Ethylene”. J.Phys. Chem. 74 , 2581 (1970).

 

Ç.ERTEK, A.YALÇIN, and Y.İNEL  
“An Accurate Determination of the Cadmium Ratio of Neutron Capture Rates in 238U in Slightly Enriched Uranium” Nucl.Sci.& Eng., 36, 209 (1969).

 

Abstract

An experimental method of determining the ratio of the epieadmium 238U neutron-capture rate to the sub cadmium 238U capture rate in a fuel rod, (ρ28), is presented. The precision is ~0.3% on the cadmium ratio. 

The relative 239Np and fission-product activities induced in a representative cross section of the fuel material 

(a thin bare foil of natural uranium) are compared with those induced in a cadmium -covered identical foil in a "flux syınmetric'' position in the rod. The 239Np gamma activity is counted by a coincidence method with and without the application of chemical separation. The results from the coincidence method are compared with two single-channel and one hundred-channel analyzer results obtained by chemical separation. 

 

Ç.ERTEK, Y.İNEL, Y.GÜRSU, A.YALÇIN, D.KAYA and T.TÜRKER  
“Determination of ρ28 Based on Chemical Seperation of 239Np from Uranium and Fission Products”. 

Bull.Turkish Phys.Soc.79 (1966).

ARTICLES, REPORTS AND POSTERS 

PRESENTED AT MEETINGS

 

 

Y.İNEL and M.ENSARİ-OZAY

''Prediction of Toxicity of Benzene Derivatives by Using the Density Threshold Value as Local and Global Shape Descriptor'' The 12th International Workshop on Quantitative Structure-Activity Relationships in Enviromental Toxicology: Bridging QSAR and Enviromental Fate Model, Lyon, France, 8-12 May, (2006)

 

A.NEREN ÖKTE and Y.İNEL

''Kinetic and Mechanistic Studies in TiO2 Photocatalyzed Degradation of 1,3-Dihydroxybenzoic acid''

The First European Conference on Oxidation and Reduction Technologies for Ex-Situ and In-Situ Treatment of Water, air and Soil, Sartorius Collge, Gottingen, Germany (2004)

 

A.NEREN ÖKTE and Y.İNEL

''Photocatalytic Degradation of 3,5-dihydroxybenzoic acid: Influence of Metal Deposition on TiO2 (P-25), The Nith International Conference on Advanced Oxidation Technologies for Water and Air Remediation'' Sheraton Centre Montreal, Montreal, Quebec, Canada (2003)

 

Y.İNEL

''Quantum Chemical Electron DensityModelling: Geometric and Topologic Structures of Molecules''

1st Aegean Physical Chemistry Days, Bornova, İzmir, Turkey, 5-7 June, (2002)

 

Y.İNEL

“Vacuum-UV Photochemical Degradation of Trifluoroethyleneat 147 nm: Experimental and Theoretical 

(ab-initio) Investigation” 1st Aegean Physical Chemistry Days, Bornova, İzmir, Turkey, 5-7 June, (2002)

 

Y.İNEL, M.ENSARİ-OZAY and B.AKGÜN

''Molecular Electron Density Structural Analysis of  Trans and Gauche Tetrafluorohydrazine''

1st Aegean Physical Chemistry Days, Bornova, İzmir, Turkey, 5-7 June, (2002)

 

Y.İNEL and B.AKGÜN

''Density Domain Analysis of Polythiophene Oligomers'' Chemical Physics V, The fifth International Conference on Chemical Physics, Yıldız Technical University, İstanbul, Turkey, 

31 October- 01 November, (2002)

 

A.NEREN ÖKTE, M. SOWA REŞAT and Y.İNEL

"TiO2 Photocatalytic Degradation of 1,3-Dihydroxytoluene'' First International Conference on Semiconductor Photochemistry, University of Strathclyde, Glaskow United Kingdom (2001)

 

Y.İNEL and A.UZUNOĞLU

''Photocatalytic Degradation of Oxalic acid in a Water Suspension of TiO2: An Initial Kinetic Study of CO2 Photogeneration'' The Second European Workshop on Water, Air  and Soil Treatment by Advanced Oxidation Technologies: Innovative and Commercial Applications, Ecole Superieure d'Ingenieurs de Poitiers (ESIP), Universite de Poitiers, France (2001)

 

Y.İNEL, A.NEREN ÖKTE, and M. SOWA REŞAT

''Substituted Recorcinols in Metal Doped TiO2 Aqueous Suspension'' The Fourth International Conference on TiO2 Photocatalytic Purification and Treatment of Water and Air, Sheraton Old Town Hotel,Albuquerque, New Mexico, USA (1999)

 

Y.İNEL, A.NEREN ÖKTE, and M. SOWA REŞAT

"Photocatalytic Oxidation of Recorcinol in a Uv-İlluminated Aqueous TiO2 Suspensions" The 1998 European Workshop on Water and Air Treatment by Oxidation Technologies: Innovative and Commercial Applications, EPLF, Lausanne, Switzerland (1998)

 

Y.İNEL, A.NEREN ÖKTE, and M. SOWA REŞAT

''Heterogeneous Photocatalysis: TiO2 Sensitizad Degradation of Recorcinol; Effect of Methanol, Hydrogen Peroxide, and Metal Ion Dopants'' Chemical Physics III,Boğaziçi Universiy, Bebek, İstanbul, Turkey (1998)

 

R.İŞERİ and Y.İNEL
“Enviromental Distribution of Substituted Benzene Derivatives” 7th International Symposium on Enviromental Pollution and its Impact on Life in the Mediterranean Region, Juan Les Pins-Antibes, France, October 12th to 15th (1993)

 

Abstract

In this work the evaluative fugacity model which describes the equilibrium environmental distribution of substituted benzene derivatives is presented. The fugacity calculatİons provide a qualitative deseription of environmental media, highlighting compartmental properties in an evaluative environment. The evaluative environment used in these calculations is a simple six compartment system.The equilibrium partitioning of substituted benzene derivatives are evaluated from physical chemical data and partition coefficients. The equilibrium ratios of concentrations and the relative amounts in each compartment are calculated based on a computer program written in BASIC. it is found that alkyl benzenes except butyl benzene, xylenes, mono and diiluorobenzenes, mono and dibromobenzenes, mono di and trichlorobenzenes, İodobenzene for the air compartment, all phenols, all anilines, acetophenone, benzyl alcohol, butyl benzene, anisole, nitrobenzenes, diiodobenzenes , chloroiodobenzenes, bromoiodobenzenes, bromochlorobenzenes, iodobenzene, di and tribromobenzenes for the water compartment and diiodobenzenes, tribromobenzenes, hexachlorobenzene, bromoiodobenzenes, chloroiodobenzenes, tetrachlorobenzenes, pentachlorobenzene for the biota, soil, sediment and suspended sediment compartments are the priorities. Good correlations between the mass partitioning of halo benzenes and total molecular surface area, molar volume and n-hydrophobic substituent constant are obtained. The mass percentage values calculated by using the correlation equations obtained are in agreement with those calculated through fugacity model. Relations between the physicochemical properties of a substituted benzene and its environmental behaviour are established.  Although the environmental behaviour of substituted benzene derivatives is sufficiently complex, at least this simple model can provide basic information about the envİronmental distribution of substituted benzene derivatives and assists their priority setting. 

 

Y.İNEL and D.ERTEK (HACIU) 
“Photocatalytic Deposition of Metal Ions onto TiO2 Powders” 29th Western Regional Meeting of American Chemical Society, Pasedena, Los Angeles, California, U.S.A October 19-23 (1993)

 

Abstract

Deposition of metals on semiconductor surfaces is an important area of photocacatalysis since heterogeneously dispersed semiconductor surfaces provide a good environment to influence the chemieal reactivity of the adsorbates. Upon photoexcitation with light of an energy greater than the band gap energy of the semiconductor, simultaneous oxidation and reduction reactions occur with the formation of electron/hole pairs. Photoehemical reduction of metals on semiconductor particles interrupts electron-hole recombination by scavenging the electrons in the conduction band and allowing the valence band holes to undergo the appropriate anodic reaction(s). In this way the preparation of supported-metal ca talysts become feasible. 

In this work, an account of the mechanistic and kinetic aspect of the photocatalytic deposition of metals (MnII, FeII, CoII, NiII, CuI , ZnII, AgII, CdII, PbII, BiIII) onto TiO2 powders will be given.

 

Y.İNEL ve A.İTKEN 
“Ters Ozmoz (Reverse Osmosis) Yönteminin Su Arıtımında Kullanımı” Boğaziçi Üniversitesi Çevre Bilimleri Enstitüsü İSKİ Raporu (1990)

 

M.BEKBÖLET ve Y.İNEL 
“Desalinasyon: Tuzdan Arıtım” Boğaziçi Üniversitesi Çevre Bilimleri Enstitüsü İSKİ Raporu (1990) 

 

M.BEKBÖLET ve Y.İNEL 
“Yapay Yağmur Yağdırma (Yağmur Bombası)” Boğaziçi Üniversitesi Çevre Bilimleri Enstitüsü İSKİ Raporu (1990)

 

F.AKŞİRAY, M.BEKBÖLET, F.BERGİN, N.DALFES, O.EROSKAY, Y.İNEL, A.İTKEN ve B.MATER 

“Terkos Gölü ve Çevresi Fiziksel Kimyasal ve Ekolojik Dengesinin Arastırılması” Boğaziçi Üniversitesi Çevre Bilimleri Enstitüsü İSKİ Raporu (1990)

 

V.AVİYENTE and Y.İNEL 
“Analysis of the Kinetics of the thermal Decomposition of Pentafluoroethane” Can. J. Chem. 68, 1332 (1990)

 

I.AKMEHMET, Y.İNEL ve M.BEKBÖLET 
“Toksik Organik Maddelerin TiO2 Partikülleri ile Fotokatalitik Oksidasyonu” Boğaziçi Üniversitesi Çevre Bilimleri Enstitüsü Rapor No. BÜÇBE 89/001 (1989)

 

N.DİRİLGEN and Y.İNEL 
“A Comprehensive Review of LEMNACEAE (DUCKWEEDS) and the Effects of the Regulated and Buffered pH Action on the Growth Rate of LEMNA MINOR on 33% HUTNER's Medium” Boğaziçi Üniversitesi Çevre Bilimleri Enstitüsü Rapor No. BÜÇBE 89/002 (1989) 

 

N.İNCE and Y.İNEL 
“Volatilization of Organic Chemicals From Water” Water, Air and Soil Pollution 47, 71 (1989)

 

Z.ÇINAR and Y.İNEL 
“Vacuum-Uv Absorption Spectrum and the Electronic Structure of Carbon Suboxide” Yıldız Üniversitesi Dergisi 1, 47 (1989)

Z.ÇINAR and Y.İNEL 
“A Comparative Review on the Photochemical Reactions of Carbon Suboxide” Boğaziçi Üniversitesi Çevre Bilimleri Enstitüsü Rapor No. BÜÇBE 89/004 (1989) 

 

İ.DOĞAN, Y.KARAÇİZMELİ ve Y.İNEL 
“Sudaki Organik Kirleticilerin Olusturduğu Klorlanma Ürünlerinin Incelenmesi” Boğaziçi Üniversitesi Çevre Bilimleri Enstitüsü Rapor No. BÜÇBE 89/010 (1988) 

 

Z.ÇINAR and Y.İNEL  
“Vacuum-Uv Absorption Spectrum and the Electronic Structure of Carbon Suboxide” Boğaziçi Üniversitesi Çevre Bilimleri Enstitüsü Rapor No. BÜÇBE 89/002 (1988) 

 

Z.ÇINAR and Y.İNEL  
“The Statistical Distribution of the Products in the Vacuum-Uv Photolysis of Carbon Suboxide with Trifluoromethane” Boğaziçi Üniversitesi Çevre Bilimleri Enstitüsü Rapor No. BÜÇBE 89/003 (1988) 

 

V.AVİYENTE ve Y.İNEL 
“Pentafluoroethanın Isısal Ayrışması” Boğaziçi Üniversitesi Çevre Bilimleri Enstitüsü Rapor No. BÜÇBE 89/005 (1988) 

 

Y.İNEL and Z.ÇINAR 
“A Theoretical Study on the Photochemical Reaction of Carbon Suboxide with Trifluoromethane” Boğaziçi Universitesi Cevre Bilimleri Enstitüsü Rapor No. BÜÇBE 88/006 (1988) 

 

Y.İNEL ve M.TURKER 
“Stratosferde Ozon Tabakasinin Yokolma Sorunu ve Sonuçlari” Boğaziçi Universitesi Cevre Bilimleri Enstitüsü Rapor No: BÜÇBE 88/007 (1988) 

 

Y.İNEL, O.YENİGÜN ve İ.İŞLİ 

Istanbul Rumelihisarüstü Bölgesinde Hava “Kirliliğinin Değerlendirilmesi” Boğaziçi Universitesi Cevre Bilimleri Enstitüsü Rapor No. BÜÇBE 88/011 (1988) 

 

N.İNCE ve Y.İNEL 
“Organik Kirleticilerin Kütle Transfer Hizlarinin Tayini” Çevre 87  Sempozyumu,  26-28 Ekim 1987,  EPSO, izmir, Bölüm E, Modeller ve Laboratuvar Çalısmalari 18 (1987)

 

AVİYENTE and Y.İNEL 
“Application of RRKM Theory to the C-C Bond Rupture in Some Fluoroethanes” Boğaziçi Üniversitesi Çevre Bilimleri Enstitüsü Rapor No. BÜÇBE 89/010 (1988) 

 

M.BEKBÖLET and Y.İNEL 
“Calibration of Quantum Yield Reactor (QYR 15) Using Potassium Ferrioxalate Actinometer” Boğaziçi Üniversitesi Çevre Bilimleri Enstitüsü Rapor No. BÜÇBE 89/010 (1988)  

 

Y.İNEL 
“Environmental Fate and Distribution of Primiphos Methyl (ACTELLIC)” Boğaziçi Üniversitesi Çevre Bilimleri Enstitüsü Rapor No. BÜÇBE 89/010 (1988) 

 

V.AVİYENTE, Y.İNEL, A.İTKEN ve M.GENÇOĞLU 
“Asetilenik Bağa HF (X = F, Cl,Br, I) ve X2(X = F, Cl, Br, I) Katilma Reaksiyonlarinda Geçis Konumunun Saptanmasi ve Aktivasyon Enerjilerinin Hesaplanmasi” Boğaziçi Üniversitesi Çevre Bilimleri Enstitüsü Rapor No. BÜÇBE 89/010 (1988) 

 

M.BEKBÖLET and Y.İNEL 
“Calibration of Quantum Yield Reactor (QYR 15) Using Potassium Ferrioxalate Actinometer” Boğaziçi Üniversitesi Çevre Bilimleri Enstitüsü Rapor No. BÜÇBE 89/010 (1988) 

 

Y.İNEL 
“Environmental Fate and Distribution of Primiphos Methyl (ACTELLIC)” Boğaziçi Üniversitesi Çevre Bilimleri Enstitüsü Rapor No. BÜÇBE 89/010 (1988) 

 

V.AVİYENTE, Y.İNEL ve S.KAVRUK 
“Modifiye Edilmiş Yarı iyon çifti Kuramıyla Asetilen Türevlerine HF Katılması Reaksiyonlarının Aktivasyon Enerjilerinin Hesabı” Boğaziçi Üniversitesi Çevre Bilimleri Enstitüsü Rapor No. BÜÇBE 89/010 (1988) 

 

Y.İNEL 
“Heksafluoroaseton'un 147 nm.de Soğurum Katsayısının Saptanması ve Trimetilamin Aktinometrik Fiziksel Yöntemin irdelenmesi” Boğaziçi Üniversitesi Çevre Bilimleri Enstitüsü Rapor No. BÜÇBE 89/010 (1988)  

 

Y.İNEL ve R.İŞERİ 
“Kirlenme Öncelikli Kimyasal Maddelerin Belirlenmesinde Kullanilabilecek Ilkeler ve Uygulama” Boğaziçi Üniversitesi Çevre Bilimleri Enstitüsü Rapor No. BÜÇBE 89/010 (1988) 

 

V.AVİYENTE and Y.İNEL 
“RRKM Theory Calculation of the Unimolecular Decomposition of Pentafluoroethane” Boğaziçi Üniversitesi Çevre Bilimleri Enstitüsü Rapor No. BÜÇBE 89/010 (1988) 

 

F.MENEMENLİ and Y.İNEL 
“The Nature of the Transition State and the Critical Bond Lengths in Difluoroamino Alkyl Radical 

Combination Reactions” Proceding of TUBiTAK, VII.Science Congress 543/TBAG.3, 525, Ankara, (1982)

 

N.İNCE and Y.İNEL 
“Calculation of the Activation Energies of the Gas Phase Addition Reactions of Difluoroamine with Olefins Using Remodified Semi Ion Pair Theory” Proceding of TUBiTAK, VII.Science Congress 543/TBAG.3 1083, Ankara, (1982)

 

Y.İNEL 
“An Investigation of the Kinetics of Oxidation Of Hydrogen Iodide and the Heat of Formation of 

Hydroperoxy (HO2) Radical” Proceding of TUBiTAK, VII.Science Congress543/TBAG.3,663, Ankara, (1982) 

 

Y.İNEL 
“Primary Processes in the Vacuum Ultraviolet Photolysis of 1,1-Difluoroethane at 147 nm.” Procedings of TÜBiTAK VII. Science Congress, 543/ TBAG. 3,361 Ankara, (1982)

 

Y.İNEL 
“Vacuum ultraviolet (147 mn) Photolysis of Nitrogen Trifluoride in the Presence of  Methane”. Quartely Report, NDRL 2304 (Q-98) Radiation Laboratory University of Notre Dame January. (1982)

 

Y.İNEL 
“Primary Processes in the 147 nm Photolysis of Trifluoroethylene”. Quartely Report, NDRL 2304 (Q-98) Radiation Laboratory, University of Notre Dame ,  January, (1982)

 

HARDWICK, J.J. BENTLEY, Y. INEL, G.N.R. TRIPATHI and D. WINICUR“ 

‘’Spectroscopy of Reaction Intermediates” Summaries of FY-1981 and FY-1982 Research in Chemical Sciences, U.S.  Department of Energy, DOE/ER 0105 , UC4 1981 and DOE/ER  0144, UC4, (1982)

 

Y. İNEL 

“Primary Processes in the Vacuum Ultraviolet Photolysis of Trifluoroethylene at 147 nm. NATO Photochemist and Photophysiscs in the Vacuum Ultraviolet, Lake Geneva, Wisconsin, U.S.A. August 15-28, (1982) 

 

J.L. HARDWICK and Y.İNEL 
“Vibrational Spectrum of Acetylene from 640 to 670 nm” Quartly Report. NDRL 2240 (Q-95) Radiation laboratory University of Notre Dame April (1981)

 

Y.İNEL and F. MENEMENLİ 
“Estimation of Equilibrium Bond Distances From Critical Bond lengths” Quartely Report. NDRL 2240 (Q-95) Radiation Laboratory  University of Notre Dame , April (1981)

 

Y.İNEL and N.İNCE  
“Determination of the Geometry of the Transition State of Four Center Addition Reaction” Quartely Report. NDRL  2240 (Q-95) Radiation Labotatory University of Notre Dame April. (1981)

 

Y.İNEL and F. MENEMENLİ 
“Equilibrium Bond Distances From Critical Bond Lengths: Estimation of Equilibrium Bond Distances in Alkyldifluoroamines” Report NDRL 2251 and Quartely Report NDRL 2262 (Q-96) Radiation Laboratory University of Notre Dame July (1981)

 

Y.İNEL and N.İNCE 
“Determination of the Geometry of the Transition State of Four Center Addition Reactions”. Report NDRL 2257 and Quartely Report NDRL 2262 (Q-96) Radiation Laboratory.University of NotreDame. July (1981)

 

Y.İNEL and F.MENEMENLİ 
“Rate Parameters and Transition State Properties for the Hydrogen Abstraction Reactions of Difluoroamino Radicals” Quartely Report. NDRL 2262 (Q-96). Radiation Laboratory.University of Notre Dame. July. (1981)

 

J.L.HARDWICK and Y.İNEL 
“Vibrational Overtone Bands of Acetylene” Quartely Reports NDRL 2262 (Q-96) Radiation Laboratory.University ofNotre Dame. July. (1981)

 

Y.İNEL 
“Vacuum Ultraviolet (147 nm) Photolysis of Nitrogen Trifluoride in the Presence of Methane” Quartely Report, NDRL 2286 (Q-97). Radiation Laboratory, University of Notre Dame. October. (1981)

 

Y.İNEL 
“Primary Processes in the 147 nm Ptotolysis of Trifluoroethylene” Quartely  Report, NDRL 2286 (Q-97), Radiation Laboratory, University of Notre Dame. Oct. (1981)

 

Y.İNEL and J.L.HARDWICK 
“Primary processes in the Vacuum Ultraviolet Photolysis of Fluorocarbons and Related Compounds”. 

Quartely Report, NDRL 2262 (Q-96). Radiation Laboratory. University of Notre Dame, July. (1981)

 

J.L.HARDWICK and Y.İNEL 
“Vibrational Spectrum of Acetylene from 640 to 870 nm” 34th Symposium on Molecular Spectroscopy,Columbia, Ohio, U.S.A., June 14 19, (1981)

Y.İNEL and M.ATALAY  
''A New Method in Pollution Studies'' Bioelectrical Action Potential Method TÜBiTAK, VII. Science Congress, istanbul, Turkey, Nov. 3-7 (1980)

 

M.ATALAY and Y.İNEL 
''The Investigation of the Biological Activity of Simple  C6-Hydrocarbons on Cray Fish "Astacus Leptodactylus" and Correlation with Physicochemical Parameters'' TÜBiTAK, VII. Science Congress, istanbul, Turkey, Nov. 3-7 ( 1980)

 

Y.İNEL 
“On the Oxidation Kinetic of Hydrogen Iodide in Gas Phase” TÜBiTAK, VII. Science Congress, izmir, Turkey, Oct. 6-10  (1980)

 

N.İNCE and Y.İNEL  
''Semi emprical Estimation of HNF2 Polarizability by the Use of Semi-Ion Pair Theory'' TÜBiTAK, VII. Science Congress, izmir, Turkey, Oct. 6-10  (1980)

 

H.BEKER, Y.İNEL and F.MENEMENLİ 
''Calculation of the Thermodynamic Quantities of Simple Hydrocarbons by Graph Theory'' TÜBiTAK, VII. Science Congress, izmir, Turkey, Oct. 6-10  (1980)

 

Y.İNEL 
''Primary Processes in the Vacuum Ultraviolet Photolysis of 1,1-Difluoroethane at 147 nm'' TÜBiTAK VII. Secience Congress, izmir ,Turkey, Oct. 6-10  (1980)

 

N.İNCE and Y.İNEL 
''The Critique and Modification of Semi-Ion Pair Theory of Four Center Addition Reactions'' TÜBiTAK. VII. science Congress. izmir, Turkey, Oct. 6-10 (1980)

 

N.İNCE and Y.İNEL 
“Calculation of the Activation Energies of the Gas Phase Addition Reactions of Difluoroamine with Olefins. Using Re-modified Semi-Ion Pair Theory”. TÜBiTAK VII. Science Congress izmir, Turkey, Oct. 6-10 (1980)

 

Y.İNEL and F.MENEMENLİ 
“Calculation of Arhenius Parameters for the Hydrogen Abstraction of Reactions of Difluoroamino Radicals by Bond-Energy-Bond-Order Method” TÜBiTAK VII. Science Congress. izmir, Turkey, Oct. 6-10 (1980) 

 

F.MENEMENLİ and Y.İNEL 
“The Relation Between the Equilibrium and Critical Bond Lengths for Me-X, Et-X, i.Pr-X and t.Bu-X  where 

X = F, Cl, Br, I, OH and NF2” TÜBiTAK VII. Science Congress izmir Turkey, Oct. 6-10 (1980)

 

F.MENEMENLI and Y.INEL 
“The Nature of the Transition State and the Critical Bond Lengths in Difluoroamino Alkyl Radical Combination Reactions” TÜBiTAK VII. Science Congress izmir, Turkey, Oct. 6-10 (1980)

 

Y.İNEL, U.SEBÜKTEKİN and N.KURT 
''Lead, Zinc and Cadmium Accumulations Along Highway'' Proceedings of TÜBiTAK VI Science Congress,  51 , (1979)

 

J.,CARDEN, Y.İNEL, K.IVERSON AND H.ÖZBAL 
“Mercury Concentrations in Mussels and Fishes Around the Haliç (Golden Horn)'' National Symposium on Solutions of the Pollution Problems of Haliç (Golden Horn), Istanbul, 

Turkey, Feb. 11 13, (1976)

 

Y.İNEL 
“Enviromental Equilibrium and the Pollution”. National Symposium on Solutions of the Pollution Problems of Haliç (Golden Horn), Istanbul, Turkey,Feb. 11 13, (1976)

 

P.S.GILL, Y.İNEL and G.G.MEISELS 
“Photolysis of Ethylene at 1048-1067 °A. Collisional Deactivation of Intermediate C4H8+ Ion” Abstract of Papers of the 159th ACS National Meeting, Houston, Texas, Feb. 22 27, (1970).

 

G.G.MEISELS, P.S.GILL and Y.İNEL 
“Energy Degradation of Gaseous Olefin Ions” Abstract of Papers of the 1st Joint Meeting with Chemical Institute of Canada and ACS,Toronto,Canada,May 24-29,(1970).

 

Y.İNEL, C.T.CHEN, B.G.GIESSNER and G.G.MEISELS 
“Theoretical and Experimental Average Energies of Excitation and Yields of Excited States in the Radiation Chemistry of Gases”. U.S.A.E.C. Report Nr.ORO-3606 11, (1969).

 

Y.İNEL 
“Comments on the Kinetics of the Addition of Ethyl,Iso-propyl, n-butyl, and Iso-pentyl Radicals to Ethylene”. U.S.A.E.C. Report Nr.ORO 3606 17, (1969)

 

P.S.GILL, Y.İNEL and G.G.MEISELS 
“Collisional Deactivation of Intermediate C4H8+ ion in the Photolysis of Ethylene at 1048 and 1067 °A”. 

U.S.A.E.C. Report Nr.ORO 3606 18, (1969).

 

Y.İNEL, A.SIDDIGI and G.G.MEISELS 
“On the Photolysis of Ethylene at 1216 °A” U.S.A.E.C. Report Nr.ORO 3606 19, (1969).

 

Y.İNEL, G.G.MEISELS and C.T.CHEN 
“On Average Excitation Energies in the Radiolysis of Hydrocarbon Gases” Abstract of Papers of the 158th ACS National Meeting, New York, N.Y., Sept. 7-12, (1969)

 

Ç.ERTEK, Y.İNEL, Y.GÜRSU, A.YALÇIN, D.KAYA and T.TÜRKER
“Determination of ρ28 Based on Chemical Seperation of 239Np from Uranium and Fission Products”. 

Nuclear and Reactor Physics Activities at the Çekmece Nuclear Research Center,Turkey. EANDC (OR) 50-L Report to the European Nuclear Energy Agency (1966).

 

Abstract

An experimental method of determining the ratio of the epieadmium 238U neutron-capture rate to the sub cadmium 238U capture rate in a fuel rod, (ρ28), is presented. The precision is ~0.3% on the cadmium ratio. 

The relative 239Np and fission-product activities induced in a representative cross section of the fuel material 

(a thin bare foil of natural uranium) are compared with those induced in a cadmium -covered identical foil in a "flux syınmetric'' position in the rod. The 239Np gamma activity is counted by a coincidence method with and without the application of chemical separation. The results from the coincidence method are compared with two single-channel and one hundred-channel analyzer results obtained by chemical separation. 

 

Ç.ERTEK, Y.İNEL, Y.GÜRSU, A.YALÇIN, D.KAYA and T.TÜRKER  
“Determination of ρ28 Based on Chemical Seperation of 239Np from Uranium and Fission Products”. 

Bull.Turkish Phys.Soc.79 (1966).

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