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Physico Chemical Analysis of Cetyl Pyridinium Chloride (CPC) Blended by Cellulose solution 纤维素溶液混合十六烷基氯化吡啶(CPC)的理化分析
Pub Date : 2019-06-30 DOI: 10.26438/ijsrpas/v7i3.125136
A. Panneerselvam, V. Karikalan
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引用次数: 0
Spectrophotometric Investigation of the Complexation Mechanism of 3(Trifluoromethyl) Acetophenone 3(三氟甲基)苯乙酮络合机理的分光光度法研究
Pub Date : 2019-06-30 DOI: 10.26438/ijsrpas/v7i3.109118
S. Saravanan, G. Kanagan, . G.Satheeshkumar, . S.Pari, R. Sambasivam
Received: 13/May/2019, Accepted: 10/Jun/2019, Online: 30/Jun/2019 AbstractThe experimental and theoretical study on the structures and vibrations of 3-TRIFLUOROMETHYL ACETOPHENONE (abbreviated as 3TFMAP) are presented. The FT-IR and FT-Raman spectra of the title compound have been recorded in the region 4000−400 cm -1 and 3500−100 cm -1 respectively. The molecular structures, vibrational wavenumbers, infrared intensities and Raman activities were calculated using DFT (B3LYP) method with 6-31+G (d) basis set. The most stable conformer of 3TFMAP is identified from the computational results. HOMO and LUMO energies were determined by time-dependent TD-DFT approach. Molecular electrostatic potential map also analysis by this present compound, respectively.
摘要对3-三氟甲基苯乙酮(简称3TFMAP)的结构和振动进行了实验和理论研究。该化合物的FT-IR和FT-Raman光谱分别位于4000 ~ 400 cm -1和3500 ~ 100 cm -1区域。采用6-31+G (d)基集的DFT (B3LYP)方法计算分子结构、振动波数、红外强度和拉曼活性。根据计算结果,确定了最稳定的3TFMAP构象。利用时变TD-DFT方法确定HOMO和LUMO能量。分子静电势图也分别由本化合物进行了分析。
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引用次数: 0
Synthesis and characterization of different percentage (Fe2+) doped copper oxide (CuO) NPs prepared by chemical method 化学法制备不同比例(Fe2+)掺杂氧化铜(CuO) NPs的合成与表征
Pub Date : 2019-06-30 DOI: 10.26438/ijsrpas/v7i3.2226
. N.Subhalakshmi, . M.Karunakaran, . K.Kasirajan, . N.Ganeshwari
In the last decade the metal oxide NPs are the promising applications in the research field. The lot of methods to available in the synthesis of NPs, but co-precipitation method is very simple, low cost and environmental friendly. The different percentage (Fe 2+ ) doped copper oxide (CuO) NPs prepared by co-precipitation method. XRD pattern confirms the samples are crystalline in monoclinic structure identified by the JCPDS Card. No (80-0076). The doping concentration increases the crystalline size also decreases. CuO NPs based functional groups are identified from FTIR spectra. UV-Vis Spectroscopy the Fe doped CuO has a band gap is determined in the range of 3.57 to 3.62 eV. The Pl emission spectra revealed a blue shift after introducing Fe into CuO structure, from these studies is better for the preparation of CuO nanoparticles. SEMthe surface morphology of the as prepared CuO nanoparticles has identified by SEM studies the indefinite and closely packed grain is observed. The EDAX spectra showed presence copper, Fe and oxygen atoms. Keywords— Co-Precipitation, Doping, Copper Oxide, Structural Studies, Band gap.
近十年来,金属氧化物纳米粒子在研究领域的应用前景十分广阔。合成NPs的方法有很多,但共沉淀法非常简单,成本低,对环境友好。用共沉淀法制备了不同比例(fe2 +)掺杂的氧化铜(CuO) NPs。XRD谱图证实样品为单斜晶型,经JCPDS卡鉴定。没有(80 - 0076)。掺杂浓度越大,晶粒尺寸越小。用FTIR光谱鉴定了CuO NPs基官能团。紫外可见光谱法测定了Fe掺杂CuO在3.57 ~ 3.62 eV范围内的带隙。在CuO结构中引入Fe后,Pl发射光谱出现蓝移,有利于制备CuO纳米粒子。SEM研究了制备的CuO纳米颗粒的表面形貌,观察到不确定且紧密排列的晶粒。EDAX光谱显示了铜、铁和氧原子的存在。关键词:共沉淀,掺杂,氧化铜,结构研究,带隙。
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引用次数: 3
Study on Radon Concentration in ground water and Physicochemical parameters of Tumkur industrial areas, Karnataka State, India 印度卡纳塔克邦图姆库尔工业区地下水氡浓度及理化参数研究
Pub Date : 2019-04-30 DOI: 10.26438/ijsrpas/v7i2.4454
S.R. Nagabhushana, Srinivasa E, uresh S, Sannappa J
Received: 19/Mar/2019, Accepted: 13/Apr/2019, Online: 30/Apr/2019 AbstractThe concentration of radon in the ground water around Tumkur industrial areas namely Hirehalli, Antharasanahalli, Satyamangala, and Vasanthanarasapura were measured by emanometry technique. The activity of primordial radionuclides such as Radium ( 226 Ra), Thorium ( 232 Th) and Potassium ( 40 K) in different rock samples of the study area were estimated by HPGe detector based on gamma ray spectrometry. Standard methods have been applied to estimate the physicochemical parameters of the samples. The average value of radon concentration varies from 5.61 Bql -1 to 160.50 Bql -1 with an average value of 75.40 Bql -1 . The total effective dose received by workers and publics due to radon inhalation and ingestion varies from 15.32 μSvy -1 to 438.20 μSvy -1 with an average value of 205.84 μSvy -1 .The average value of primordial radio nuclides such as 226 Ra, 232 Th and 40 K in the rock samples of the study area varies from 20±1.5 to 150±3 Bqkg -1 , 25±0.4 to 200±2.5 Bqkg -1 and 450±4 to 1800±15 Bqkg -1 respectively and their corresponding mean values are 65.6±1.3 Bqkg -1 , 81.8±1.5 Bqkg -1 , and 854.2±12 Bqkg -1 respectively. These values are comparable with global average. The average values of Physico chemical parameter are within the safe level as prescribed by USEPA and WHO. The results shows noteworthy correlation cannot be observed between concentration of radon and physicochemical parameters in water samples in the study area. The radon concentration in ground water mainly depends on the type of aquifers and its mineral compositions.
摘要采用放射测量法对图木库尔地区Hirehalli、Antharasanahalli、Satyamangala和Vasanthanarasapura工业区周边地下水中的氡浓度进行了测定。利用基于伽马能谱法的HPGe探测器,测定了研究区不同岩石样品中镭(226 Ra)、钍(232 Th)和钾(40 K)等原始放射性核素的活度。采用标准方法对样品的理化参数进行了估计。氡浓度平均值为5.61 ~ 160.50 Bql -1,平均值为75.40 Bql -1。总有效剂量受到工人和公众由于氡吸入和摄入变化从15.32μSvy 1到438.20μSvy 1平均值为205.84μSvy 1,平均值等原始无线电核素226 Ra 232和40 K的岩石样本研究区域不同20±1.5 150±3 Bqkg 25±0.4到200±2.5 Bqkg 1和450±4到1800±15 Bqkg 1分别和相应的平均值是65.6±1.3 Bqkg 1, 81.8±1.5 Bqkg 1,854.2±12 Bqkg -1。这些数值与全球平均值相当。理化参数平均值均在美国环保局和世界卫生组织规定的安全水平内。结果表明,研究区水样中氡浓度与理化参数之间没有明显的相关性。地下水中的氡浓度主要取决于含水层的类型及其矿物组成。
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引用次数: 3
Green synthesis of MgFe2O4 nanoparticles using Albumen as Fuel and their Physico-Chemical Properties 以蛋白为燃料绿色合成纳米MgFe2O4及其理化性质
Pub Date : 2019-04-30 DOI: 10.26438/ijsrpas/v7i2.7174
P. Udhaya, M. Meena, M. Queen
Received: 12/Apr/2019, Accepted: 20/Apr/2019, Online: 30/Apr/2019 Abstract— This research article reports the green synthesis of magnesium ferrite nanoparticle via auto-combustion using albumen as fuel. The synthesized nanoparticles are confirmed to process single phase and spinel structure with the help of powder X ray diffraction (PXRD) and Fourier Transform Infrared Spectroscopy (FTIR). Which also determines the functional groups present in the nanoparticles. EDAX results provide the percentage composition of the elements in the synthesized sample. The Field Emission Scanning Microscope (FESEM) reveals the agglomerated nature of ferrite nanoparticles. Magnetic moment and retentivity were obtained using Vibrating Sample Magnetometer (VSM). Dielectric properties of the as prepared samples were measured by two-probe method for various frequencies ranging from 100Hz-1MHz.
摘要/ Abstract摘要:本文报道了以蛋白为燃料,采用自燃法绿色合成纳米铁氧体镁的研究进展。利用粉末X射线衍射(PXRD)和傅里叶变换红外光谱(FTIR)证实了合成的纳米颗粒具有单相和尖晶石结构。这也决定了纳米颗粒中的官能团。EDAX结果提供了合成样品中元素的百分比组成。场发射扫描显微镜(FESEM)揭示了铁氧体纳米颗粒的团聚性质。用振动样品磁强计(VSM)测定了样品的磁矩和保持力。用双探针法在100Hz-1MHz的频率范围内测量了所制备样品的介电性能。
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引用次数: 6
Effect of Annealing Temperature on Structural and Optical properties of Mn doped SnO2 Thin Films Prepared by Sol-Gel Technique 退火温度对溶胶-凝胶法制备Mn掺杂SnO2薄膜结构和光学性能的影响
Pub Date : 2019-04-30 DOI: 10.26438/ijsrpas/v7i2.99107
Sunaina, P. Sharma, Prianka Sharma
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引用次数: 0
Spectroscopic Studies on PVA-Chitosan Blend with Potassium Nitrate as Ionic Crosslinker for Biomedical Application 以硝酸钾为离子交联剂的聚乙烯醇-壳聚糖共混物的光谱研究
Pub Date : 2019-04-30 DOI: 10.26438/ijsrpas/v7i2.6265
Firdos Jahan, R. Mathad
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引用次数: 0
Improved electromagnetic properties of Vanadium doped Ni- Zn ferrite for high frequency Applications 改善掺钒镍锌铁氧体高频电磁性能
Pub Date : 2019-04-30 DOI: 10.26438/ijsrpas/v7i2.8992
V. Lakshminarayana, K. Chandramouli, G. Rao
Received: 14/Apr/2019, Accepted: 23/Apr/2019, Online: 30/Apr/2019 AbstractA series of samples with the composition Ni0.65 Zn0.35 Fe2 O4 + x V2 O5 (x = 0.0 to 1.5 wt % in steps of 0.3 wt %) have been prepared by double sintered ceramic method. They are calcined for four hours at 900 o C and sintering temperature is maintained at 1210 0 c at for 4 hours in air atmosphere. The samples are characterized by X-ray diffraction, Saturation magnetization and Curie temperature. Both the saturation magnetization and Curie temperature have been observed to decrease slightly with increasing concentration of the vanadium. An increasing trend in D.C. resistivity is observed in vanadium series up to x = 0.6 wt%. The μi is decreased slightly for lower concentrations and steeply for higher concentration. Higher resistivity and near stable magnetic properties are exhibited with vanadium concentration x = 0.6 wt%. Dissolution of Vanadium into ferrite lattice for minor additions is responsible for the modifications in the electrical and magnetic properties.
摘要采用双烧结法制备了Ni0.65 Zn0.35 Fe2 O4 + x V2 O5 (x = 0.0 ~ 1.5 wt %,步骤为0.3 wt %)系列样品。它们在900℃下煅烧4小时,在空气中保持烧结温度在1210℃下烧结4小时。用x射线衍射、饱和磁化和居里温度对样品进行了表征。随着钒浓度的增加,饱和磁化强度和居里温度均略有下降。钒系的直流电阻率在x = 0.6 wt%时呈上升趋势。μi在较低浓度下略有下降,在较高浓度下急剧下降。当钒浓度x = 0.6 wt%时,材料表现出较高的电阻率和接近稳定的磁性能。少量添加钒到铁氧体晶格中的溶解是导致电学和磁学性能改变的原因。
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引用次数: 1
Estimation of ground and excited state dipole moments of newly synthesized coumarin molecule by Solvatochromic shift method and Gaussian software 用溶剂变色移法和高斯软件估计新合成香豆素分子的基态和激发态偶极矩
Pub Date : 2019-04-30 DOI: 10.26438/ijsrpas/v7i2.3843
G. Mathapati, P. K. Ingalagondi, Omnath Patil, Shivaleela B, Shivaraj Gounalli, S.M. Hanagodimat
Received: 10/Apr/2019, Accepted: 19/Apr/2019, Online: 30/Apr/2019 Abstract: Absorption and fluorescence spectra of newly synthesized coumarin molecule namely 4-((3-methoxyphenoxy)methyl)-7-hydroxy-2H-chromen-2-one [3-MPHC] have been recorded at room temperature (300 K) in solvents of different polarities. The effects of solvents on the spectral properties are discussed. Using Lippert‟s, Bakshiev‟s and Kawski-Chamma-Viallet‟s equations the ground (μg) and excited state (μe) dipole moments were estimated. Variation of Stokes shift with the solvent dielectric constant along with refractive index was made use of to estimate dipole moments. Density Functional Theory (DFT) was studied using Gaussian software 16. It was observed that excited state dipole moment was higher than the ground state dipole moment. Further we have analyzed microscopic solvent polarity parameter.
摘要:研究了新合成的香豆素分子4-((3-甲氧基苯氧基)甲基)-7-羟基- 2h - chromen1 -2-one [3-MPHC]在室温(300 K)下不同极性溶剂中的吸收光谱和荧光光谱。讨论了溶剂对光谱性质的影响。利用Lippert方程、Bakshiev方程和Kawski-Chamma-Viallet方程估计了基态偶极矩和激发态偶极矩。利用斯托克斯位移随溶剂介电常数和折射率的变化来估计偶极矩。利用高斯软件研究了密度泛函理论(DFT)。观察到激发态偶极矩高于基态偶极矩。进一步分析了微观溶剂极性参数。
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引用次数: 2
Effect of defect density in different layers and ambient temperature of n-i-p a-Si single junction solar cells performance 不同层间缺陷密度和环境温度对n-i-p - a-Si单结太阳能电池性能的影响
Pub Date : 2019-04-30 DOI: 10.26438/ijsrpas/v7i2.9398
S. C. Dubey, Arpita Mathur, Nidhi, B. P. Singh
: In this paper simulation study of optimized n-i-p a-si single junction solar cell which having defect density in different layers. From the simulation result, it was found that the conversion efficiency is affected due to the presence of defect density in different layers. The maximum conversion efficiency is found 24.74% and 22.94% at without defect density at 0ºC and 30ºC respectively, while the conversion efficiency become zero in p-type front layer in 10 22 cm -3 defect density and 11.35% in i-type absorber layer in 10 -21 cm -3 defect density. It is clear that the quality of absorber layer and front layer is the key factor in cell performance or efficiency improvement. These results are consistence with the fact that n-i-p a-Si single junction solar cell with the higher defect densities and dislocation exhibits a lower efficiency of the cell.
本文对具有不同层间缺陷密度的优化n-i-p - a-si单结太阳能电池进行了仿真研究。仿真结果表明,不同层间缺陷密度的存在会影响转换效率。在0ºC和30ºC时,无缺陷密度下的转换效率最高,分别为24.74%和22.94%,而在10 - 22 cm -3缺陷密度下,p型锋层的转换效率为零,在10 -21 cm -3缺陷密度下,i型吸收层的转换效率为11.35%。显然,吸收层和前层的质量是电池性能或效率提高的关键因素。这些结果与n-i-p - a- si单结太阳能电池具有较高缺陷密度和位错的电池效率较低的事实相一致。
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引用次数: 7
期刊
International Journal of Scientific Research in Physics and Applied Sciences
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