Oriental Journal Of Chemistry最新文献_第8页

Design of Novel Thiohydantoin Derivatives and Exploration their Physico-Chemical Parameters 新型硫代海因衍生物的设计及其理化参数的探索

Oriental Journal Of Chemistry Pub Date : 2023-10-30 DOI: 10.13005/ojc/390520

Prashant A. Gotmare, Sanjay V. Kolhe

引用次数: 0

A Comprehensive Review on the Techniques and Indexes Used for the Analysis of Fluorosis in Humans and Cattle 人、牛氟中毒分析技术与指标综述

Oriental Journal Of Chemistry Pub Date : 2023-10-30 DOI: 10.13005/ojc/390505

Pradeep Khyalia, Himani Jugiani, Jyoti Dangi, Jitender Singh Laura, Meenakshi Nandal

{"title":"A Comprehensive Review on the Techniques and Indexes Used for the Analysis of Fluorosis in Humans and Cattle","authors":"Pradeep Khyalia, Himani Jugiani, Jyoti Dangi, Jitender Singh Laura, Meenakshi Nandal","doi":"10.13005/ojc/390505","DOIUrl":"https://doi.org/10.13005/ojc/390505","url":null,"abstract":"Fluoride is known to play a significant role in dental formation. High fluoride intake leads to different symptoms one of them is dental fluorosis, which is chronic dental toxicity. Various indexes have been introduced to measure the intensity and severity of dental fluorosis. Some of these indexes are fluoride specific, such as Dean’s index, Thylstrup and Fejerskov index, the Tooth Surface Index of Fluorosis index, ICMR index. While others are non-fluoride descriptive indexes such as the Developmental Defects of enamel index. Dental fluorosis is most commonly assessed by clinical examination by experts in these indexes, but nowadays, technical assistance such as photographs is used for diagnosis. Recent advancements have also witnessed the development of Visual analog scales and quantitative light fluorescence methods for dental fluorosis assessments. This review article focuses on important techniques and indexes used in the evaluation and characterization of dental fluorosis. A comparative review analysis of available indexes and the scope of future advancements have also been compiled.","PeriodicalId":19599,"journal":{"name":"Oriental Journal Of Chemistry","volume":"155 ","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136069414","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: 0

Tunable Paramagnetism in Mn co-doped N:CdS Composite Nanoparticles Mn共掺杂N:CdS复合纳米颗粒的可调顺磁性

Oriental Journal Of Chemistry Pub Date : 2023-10-30 DOI: 10.13005/ojc/390511

Surya Sekhar Reddy M

{"title":"Tunable Paramagnetism in Mn co-doped N:CdS Composite Nanoparticles","authors":"Surya Sekhar Reddy M","doi":"10.13005/ojc/390511","DOIUrl":"https://doi.org/10.13005/ojc/390511","url":null,"abstract":"Manganese-co-doped N:CdS composite nanoparticles (CNps) have been prepared by using the co-precipitation method. 2-Mercaptoethonal is used as a surfactant to control the size of nanoparticles. X-ray diffraction (XRD) studies confirm the size of the particles in the nanorange. The Rietveld refinement with X'-pert high-score software studies show multiphase existence in as-prepared composite nanoparticles. The energy dispersive analyses of X-ray studies (EDAX) confirm the presence of doped Mn and nitrogen elements in CdS. The Fourier transform infrared spectroscopy (FTIR) studies confirm the presence of surfactant. The ultraviolet-visible spectroscopy studies (UV-VIS) show a clear blue shift in the band gap, which is an indication of the quantum confinement effect. The photoluminescence studies (PL) attribute the emission of a characteristically strong peak at λ = 632 nm, corresponding to the (4T1→6A1) transition, to the inclusion of Mn2+ in the core of the CdS lattice. The electron paramagnetic spectroscopy (EPR) studies show paramagnetic behavior. The hyperfine splitting constant (A) values around 7 mT from EPR confirms the inclusion of Mn2+ and N3- in the tetrahedral sites of the CdS core. The variation in optical and magnetic properties of as-prepared composite nanoparticles has the potential for optoelectric and magnetoluminescence devices.","PeriodicalId":19599,"journal":{"name":"Oriental Journal Of Chemistry","volume":"29 2","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136070343","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: 0

Quantitative Mineralogical Analysis and Study of Morphology and Thermal Characteristics of Rock Samples of Dudhi Nala and Bokaro River. 杜迪纳拉河和博卡罗河岩石样品的定量矿物学分析及形貌和热特征研究。

Oriental Journal Of Chemistry Pub Date : 2023-10-30 DOI: 10.13005/ojc/390535

Omprakash Mahato, P. K. Srivastava

{"title":"Quantitative Mineralogical Analysis and Study of Morphology and Thermal Characteristics of Rock Samples of Dudhi Nala and Bokaro River.","authors":"Omprakash Mahato, P. K. Srivastava","doi":"10.13005/ojc/390535","DOIUrl":"https://doi.org/10.13005/ojc/390535","url":null,"abstract":"Beds of Talchir formation are well exposed in the western part of the Bokaro coalfields (Dudhi Nala) which comprises tillite, conglomerates, sandstones, with dropstones and turbidite sequences comprising siltstones and shales. This work presents the study of glacigenic Talchir sediments of Dudhi Nala section and sediments of Bokaro river. The morphology, major oxides, trace elements, Rare Earth elements and minerals found in these sediments are of great geological importance. The minerals present in these samples have been also investigated. The samples collected from Dudhi Nala are enriched in SiO2 (66-68 wt % compared to 25-60 wt % in the samples of Bokaro river). In contrast to SiO2, Fe2O3 is dominant in the Bokaro river samples. Dudhi Nala samples are rich in trace elements like Ba (1047 ppm), Rb ( 219 ppm), Sr (312 ppm), Zr ( 256 ppm) and Pb (65 ppm), where as Bokaro river samples dominates in Cr (140 ppm), Sc (39 ppm), V (117 ppm) and Zn (90 ppm). FESEM/ EDX analysis was done to study the morphological characteristics and elemental composition were analysed by FESEM/EDX. Thermal characteristics of the samples were studied by TGA/DSC. Further, XRD analysis confirmed that Calcite and feldspar are the common minerals present in the samples of the both the study areas.","PeriodicalId":19599,"journal":{"name":"Oriental Journal Of Chemistry","volume":"100 2","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136105554","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: 0

Development in the Modification of Phenolic Resin by Renewable Resources: (A-Review) 利用可再生资源改性酚醛树脂的研究进展

IF 0.5

Oriental Journal Of Chemistry Pub Date : 2023-08-30 DOI: 10.13005/ojc/390407

Meet Patel, Mitali Yadav, M. Raj

引用次数: 0

Fabrication and Electrochemical Investigation of RGO-NiO Nanocomposite Electrodes for Supercapacitor Applications 超级电容器用RGO-NiO纳米复合电极的制备及电化学研究

IF 0.5

Oriental Journal Of Chemistry Pub Date : 2023-08-30 DOI: 10.13005/ojc/390411

Asa Palakkaden Subramanian, A. Vidyadharan, Chithra Poomala Gopi

引用次数: 0

Effect of Ag ion Implantation on the Crystallinity and Optical Property of Spin-coated TiO2 Thin Films Ag离子注入对旋涂TiO2薄膜结晶度和光学性能的影响

IF 0.5

Oriental Journal Of Chemistry Pub Date : 2023-08-30 DOI: 10.13005/ojc/390419

Sunil Kumar, Hansraj Sharma, J. Parsad, Jagavendra Yadav, Mangej Singh

引用次数: 0

Synthesis and Characterization of Benzimidazole Derivatives and Evaluation of Antimicrobial activity 苯并咪唑衍生物的合成、表征及抗菌活性评价

IF 0.5

Oriental Journal Of Chemistry Pub Date : 2023-08-30 DOI: 10.13005/ojc/390424

K. K. Vyas, Sangeeta Rajpurohit, Yudhishthir Vaishnav

引用次数: 0

Black Pepper, Dietary Photochemicals in the Prevention of Diseases by Oxidative Stress (A-Review) 黑胡椒，通过氧化应激预防疾病的膳食光化学物质（A-Review）

IF 0.5

Oriental Journal Of Chemistry Pub Date : 2023-08-30 DOI: 10.13005/ojc/390404

Kevin Jordan Noel, Keerthivasan P, Srikanth V V, R. Srimathi

{"title":"Black Pepper, Dietary Photochemicals in the Prevention of Diseases by Oxidative Stress (A-Review)","authors":"Kevin Jordan Noel, Keerthivasan P, Srikanth V V, R. Srimathi","doi":"10.13005/ojc/390404","DOIUrl":"https://doi.org/10.13005/ojc/390404","url":null,"abstract":"Medicinal plants are widely valued and are of prime concern globally. Scientific exploration on the flora and fauna of the globe increased, identifying drawbacks in synthetic utility of drugs like poor absorption, high dose, low bioavailability, and poor patient compliance. Plant based pharmaceuticals are considered as an alternative therapy and phytochemicals are being approved as drugs. Our interest is to explore on the spice, Black pepper which is classified under safe herb by FDA. The literature studies are collected estimating the efficacy of the spice against a variety of disease conditions like asthma, diabetes, hyperlipidaemia, inflammation, cancer, oxidative stress, gastrointestinal secretion, lipid metabolism, etc. In this review, we focussed on the scavenging capacity of black pepper in the abduction of free radicals. Increased in the production of free radicals is linked to causing oxidative stress in the body which is underlying cause for many lifestyle disorders like obesity, diabetes, congestive heart failure, myocardial ischemia, and different forms of cancer such as breast, prostate, lung, endometrial, skin, stomach, etc. This review focuses on the efficacy of black pepper and its relationship with many diseases.","PeriodicalId":19599,"journal":{"name":"Oriental Journal Of Chemistry","volume":" ","pages":""},"PeriodicalIF":0.5,"publicationDate":"2023-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45717336","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: 0

Enzymatic Activity of Polyphenol Oxidase: A Laboratory Experiment in Flexible Learning 多酚氧化酶的酶活性：弹性学习的实验研究

IF 0.5

Oriental Journal Of Chemistry Pub Date : 2023-08-30 DOI: 10.13005/ojc/390405

Dyanne Jane Cid Duldulao

{"title":"Enzymatic Activity of Polyphenol Oxidase: A Laboratory Experiment in Flexible Learning","authors":"Dyanne Jane Cid Duldulao","doi":"10.13005/ojc/390405","DOIUrl":"https://doi.org/10.13005/ojc/390405","url":null,"abstract":"Polyphenol oxidases (PPO) are enzymes that catalyze the browning of fruits and vegetables when oxygen in the air reacts with the present phenolic compounds. This study demonstrates the enzymatic browning of food samples and the inhibition of its activity by common household materials. Fresh food samples were tested in different treatments of acidic and ionic solutions, and syrups. Observations from the students’ work showed that changes in pH, surface area for the site of reaction, and ionic conditions affect enzymatic browning. The deviation from the optimum working pH, introduction of ionic interaction, and alteration of the surface area led to the interruption of the interaction within the enzyme structure and between its active site and the substrate thereby inhibiting the enzyme function. Results of the experiment can also serve as a basis for further studies on the development of methods and products to inhibit PPO action and maintain the sensory value and nutritional quality of foods. Furthermore, experiments of similar nature can be crafted as practical activities and alternative teaching techniques designed for students to apply chemistry concepts and laboratory fundamentals to the conduct of an experiment suited for the flexible learning set- up.","PeriodicalId":19599,"journal":{"name":"Oriental Journal Of Chemistry","volume":" ","pages":""},"PeriodicalIF":0.5,"publicationDate":"2023-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44625958","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: 0