The open spectroscopy journal最新文献_第2页

Spectroscopy Journal—Open Access Journal on Spectroscopy 光谱学期刊-开放获取的光谱学期刊

The open spectroscopy journal Pub Date : 2022-12-27 DOI: 10.3390/spectroscj1010001

C. Burda

引用次数: 1

Spectroscopic Analyses of Modified Fulleropyrrolidine Derivatives 改性富勒吡咯烷衍生物的光谱分析

The open spectroscopy journal Pub Date : 2015-02-19 DOI: 10.2174/1874383801509010001

N. Saleh, H. Elhaes, Osama Osman, A. Mahmoud, M. Ibrahim

引用次数: 4

Raman Spectroscopy: A Promising Technique for Analyzing Nucleic Acid Refractory to PCR Amplification 拉曼光谱:一种有前途的分析难以PCR扩增的核酸的技术

The open spectroscopy journal Pub Date : 2014-12-16 DOI: 10.2174/1874383801408010009

Milad Soleimani, Rachel Matar, Maxime Merheb

{"title":"Raman Spectroscopy: A Promising Technique for Analyzing Nucleic Acid Refractory to PCR Amplification","authors":"Milad Soleimani, Rachel Matar, Maxime Merheb","doi":"10.2174/1874383801408010009","DOIUrl":"https://doi.org/10.2174/1874383801408010009","url":null,"abstract":"Ancient DNA (aDNA) refers to the genetic material found in dead paleontological and archeological samples. Being subject to various types of stressors, it undergoes different hydrolytic and oxidative post mortem modifications that result in the formation of DNA lesions. These lesions are found to either block the DNA polymerase during replication or induce nucleotide misincorporations. Besides, aDNA samples occur in minimal quantities; which represents an additional obstacle that researchers have to overcome in order to study aDNA. The earliest major efforts included the use of molecular cloning and polymerase chain reaction (PCR) to amplify aDNA sequences. These techniques were later found to be associated with a number of false results and unauthentic findings. There have been numerous attempts to eliminate the shortcomings of PCR and improve the quality of aDNA through avoiding contamination, repairing lesions, using translesion polymerases, etc. However, the majority of these have failed to yield accurate and specific results. Surface- enhanced resonance Raman scattering (SERRS), on the other hand, starts in the right foot by introducing a sensitive non- enzymatic approach for the specific detection of single- and double-stranded DNA. The ability of this method to evade DNA degradation is particularly important for not only studying aDNA, but also analyzing DNA refractory to PCR amplification in processed products.","PeriodicalId":88758,"journal":{"name":"The open spectroscopy journal","volume":"8 1","pages":"9-16"},"PeriodicalIF":0.0,"publicationDate":"2014-12-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68070891","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Gamma Rays Interactions with Strontium Borate Glasses Doped with First-Row Transition Metal Oxides 伽马射线与掺杂第一排过渡金属氧化物的硼酸锶玻璃的相互作用

The open spectroscopy journal Pub Date : 2014-10-31 DOI: 10.2174/1874383801408010001

H. E. Batal, F. ElBatal, A. Abdelghany

{"title":"Gamma Rays Interactions with Strontium Borate Glasses Doped with First-Row Transition Metal Oxides","authors":"H. E. Batal, F. ElBatal, A. Abdelghany","doi":"10.2174/1874383801408010001","DOIUrl":"https://doi.org/10.2174/1874383801408010001","url":null,"abstract":"Optical and FT infrared absorption spectroscopic studies were carried out to investigate the spectral properties of prepared undoped and 3d transition metal oxides-doped-strontium borate glasses. The same measurements were repeat- ed after gamma-irradiation of the samples with a dose of 8 Mrad (8  10 4 Gy). The undoped strontium borate glass before irradiation exhibits a broad strong UV absorption which is related to unavoidable trace iron (Fe 3+ ions) impurities contam- inated within the raw materials used for the preparation of this glass. Examination of the optical spectra of TMs-doped glasses reveals extra characteristic UV-visible bands due to the respective doping 3d transition metal ions. Gamma irradia- tion of the undoped strontium borate glass produces induced defects within the UV and visible regions while the TMs- doped glasses reveal limited variations due to shielding effects of some TM ions in this specific host strontium borate doped glasses towards gamma irradiation. Infrared absorption spectra of the prepared glasses reveal characteristic vibrational bands due to both triangular and tetra- hedral borate groups within the wavenumber range 1200-1600 cm -1 and 800-1200 cm -1 , respectively. The addition of 3d TM dopants (0.2 %) causes no distinct variations in the main IR vibrational bands because of the low level of TM ions and their housing in the glass network structure as modifiers. Also, gamma irradiation causes no changes in the number or position of the main characteristic IR vibration bands due to the quite stability of the base glass containing high content of heavy metal (Sr 2+ ) cations.","PeriodicalId":88758,"journal":{"name":"The open spectroscopy journal","volume":"283 3 1","pages":"1-8"},"PeriodicalIF":0.0,"publicationDate":"2014-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68070881","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 14

Thermally Induced Isomerisation Kinetics of the 9c11t and 10t12c Conjugated Linoleic Acids in Triacylglycerols as Studied by FT-IR Spectrometry Aided by Gas Chromatography 气相色谱辅助傅里叶红外光谱法研究了9c11t和10t12c共轭亚油酸在三酰基甘油中的热诱导异构化动力学

The open spectroscopy journal Pub Date : 2014-05-30 DOI: 10.2174/1874383801004010041

A. Christy

引用次数: 2

Water Adsorption Characteristics of Acyclic Oligosaccharides of α-Gluose Studied by Near Infrared Spectroscopy 近红外光谱研究α-葡萄糖无环寡糖的水吸附特性

The open spectroscopy journal Pub Date : 2013-12-27 DOI: 10.2174/1874383801307010009

A. Christy

{"title":"Water Adsorption Characteristics of Acyclic Oligosaccharides of α-Gluose Studied by Near Infrared Spectroscopy","authors":"A. Christy","doi":"10.2174/1874383801307010009","DOIUrl":"https://doi.org/10.2174/1874383801307010009","url":null,"abstract":"The adsorption properties of water molecules on maltooligosaccharides are attributed to the OH groups of the glucose rings in maltooligosaccharides. The water molecules are adsorbed onto OH groups by hydrogen bond formation. Near infrared spectroscopic and gravimetric techniques were used in analysing the adsorption characteristics of maltooligosaccharides. Near infrared spectra of the dry maltooligosaccharides were acquired during the adsorption of wa- ter molecules at a relative humidity of 50%. The amounts of water adsorbed by the samples were also recorded by an ana- lytical balance. Second derivative techniques were used in decomposing the OH combination frequency of the adsorbed water molecules in the region 5300-5000 cm -1 . The results indicate that the water molecules are adsorbed on to C2 and C3-OH groups at a higher rate compared to the adsorption onto C1-OH groups in the molecules. Adsorption also takes place onto the ethereal oxygen atoms in the glucose rings. The gravimetric results show that the adsorption of water molecules increases with the number of glucose units in the maltooligosaccharides except maltotriose which has the highest adsorption over a period of 75 minutes.","PeriodicalId":88758,"journal":{"name":"The open spectroscopy journal","volume":"7 1","pages":"9-14"},"PeriodicalIF":0.0,"publicationDate":"2013-12-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68070871","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 4

A Computational/Spectroscopic Study of a Newly Derived General Unified Theory of Spectral Line Shapes to Measure HWHM's for an Ar-perturber/K-radiator system, Using Two 7s←4p Transitions, as Applied to the Line Core 用两个7s←4p跃迁测量ar -摄动器/ k -辐射系统HWHM的新导出的光谱线形状通用统一理论的计算/光谱学研究

The open spectroscopy journal Pub Date : 2013-11-29 DOI: 10.2174/1874383801307010001

W. Kreye

引用次数: 0

Combined DFT, Deconvolution Analysis for Structural Investigation of Copper -doped Lead Borate Glasses 结合DFT、反褶积分析研究掺铜硼酸铅玻璃的结构

The open spectroscopy journal Pub Date : 2012-08-10 DOI: 10.2174/1874383801206010009

A. Abdelghany

{"title":"Combined DFT, Deconvolution Analysis for Structural Investigation of Copper -doped Lead Borate Glasses","authors":"A. Abdelghany","doi":"10.2174/1874383801206010009","DOIUrl":"https://doi.org/10.2174/1874383801206010009","url":null,"abstract":"Samples from binary lead borate glass system doped with minor quantities of copper have been prepared by conventional melt-annealing technique. X-ray diffraction (XRD) has been used to prove the amorphous nature of prepared glasses. Structural and optical properties were investigated using FTIR and UV-vis. Spectroscopic investigations were ap- proved using density function theory (DFT) calculations. Deconvolution analysis technique (DAT) combined with DFT technique were employed to interpret both of the theoretical and experimental IR data of this glass system and their agreement. Experimental IR data reveal the presence of both triangular and tetrahedral borate groups besides the sharing of Pb-O units. Direct and indirect optical energy band gaps before and after doping with different percents of copper were calculated to evaluate the role of copper in the glassy matrix. Undoped glass sample is observed to exhibit strong UV absorption due to the combined contributions of absorption of both Pb 2+ ions and trace iron impurities. The presence of both Cu 2+ ions to- gether with the other copper valence state Cu + has been proved by the appearance of extra visible absorption bands.","PeriodicalId":88758,"journal":{"name":"The open spectroscopy journal","volume":"6 1","pages":"9-14"},"PeriodicalIF":0.0,"publicationDate":"2012-08-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68070801","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 14

Studying the Polymerization of Aniline on Fullerene 苯胺在富勒烯上聚合的研究

The open spectroscopy journal Pub Date : 2012-08-10 DOI: 10.2174/1874383801206010002

H. Elhaes

{"title":"Studying the Polymerization of Aniline on Fullerene","authors":"H. Elhaes","doi":"10.2174/1874383801206010002","DOIUrl":"https://doi.org/10.2174/1874383801206010002","url":null,"abstract":"Polyaniline is among a family of conductive polymers, that exhibits properties similar to some metals. Accord- ingly quantum mechanical calculations have been performed to study the possible polymerization of aniline on the surface of fullerene. Several model molecules representing the polymerization of aniline are studied; polymerization is tested with fullerene and fulleropyrrolidine surfaces. Total dipole moment, ionization potential, molecular weight, molecular dimen- sion and molecular point group for C60-aniline and C60- pyrrolidine-aniline have been computed with the semiempirical PM3 method. The molecular point group has changed into C1 point group corresponding to C60 -aniline and C60- pyr- rolidine-aniline, which reflects a change in the symmetry. Results indicate also that polarization increases the calculated total dipole moment, molecular weight and molecular dimension while ionization potential has slightly decreased. Final heat of formation increases with temperature for both C60-aniline and C60-pyrrolidine aniline. This reflects the thermal stability of the polymerized aniline on both fullerene and fulleropyrrolidine. Calculated HOMO-LUMO energy indicate that polyaniline which polymerizes on fullerene is the most probable.","PeriodicalId":88758,"journal":{"name":"The open spectroscopy journal","volume":"6 1","pages":"2-8"},"PeriodicalIF":0.0,"publicationDate":"2012-08-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68070761","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

A Novel Peptidomimetic Compounds as HCV-NS3 Protease Inhibitors: Spectroscopic Analysis 一种新的拟肽化合物作为HCV-NS3蛋白酶抑制剂:光谱分析

The open spectroscopy journal Pub Date : 2012-08-10 DOI: 10.2174/1874383801206010015

M. Ibrahim, N. Saleh, W. Elshemey, A. Elsayed

引用次数: 1