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208 articles for “radical”
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ESR Evidence of Growing Unsaturation in -Irradiated Poly (Vinyl Alcohol)
Abstract: AbstractFree radicals present in gamma irradiated PVAL subjected to different degrees oxidation are identified using ESR spectroscopy. The observed ESR spectra are analysed by computer simulations. Gamma irradiated PVAL immediately after irradiation possess ~CH2–CH–CH2~ type free radicals (I). Upon oxidation the free radicals transform to ~CH2–CH=CH–CH2~ (II) highly oxidized PVAL consist ~CH2–C=O (III) type free radicals. The results suggest that radical (I) is precursor to radicals (II) and (III). Oxidation …
Published in Journal of Polymer & Composites · Vol. 1, Issue 3, 2013 · pp. 10–12 Read article
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Use of Dashamoola in Cervical Spondylosis: Past and Present Perspective
Abstract: Cervical spondylosis is one of the most common disorders of the cervical spine. It is caused by degenerative changes in the vertebrae and intervertebral discs that occur because of constant improper stress on the cervical spine due to abnormal posture, injury, ageing, rheumatoid disease etc. In conventional system of medicine, a number of factors are responsible for the development of signs and symptoms of cervical spondylosis such as osteophyte (bony …
Published in Journal of AYUSH: Ayurveda, Yoga, Unani, Siddha and Homeopathy · Vol. 4, Issue 1, 2015 · pp. 10–16 Read article
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Use of Dashamoola in Cervical Spondylosis: Past and Present Perspective
Abstract: Cervical spondylosis is one of the most common disorders of the cervical spine. It is caused by degenerative changes in the vertebrae and intervertebral discs that occur because of constant improper stress on the cervical spine due to abnormal posture, injury, ageing, rheumatoid disease etc. In conventional system of medicine, a number of factors are responsible for the development of signs and symptoms of cervical spondylosis such as osteophyte (bony …
Published in Journal of AYUSH: Ayurveda, Yoga, Unani, Siddha and Homeopathy · Vol. 4, Issue 1, 2015 · pp. 10–16 Read article
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Fertility-Preserving Surgeries in Carcinoma Cervix – What Is the Current Evidence?
Abstract: Cervical cancer is the most common cancer in India. Fourteen percent of the patients diagnosed with cervical cancer in India are under the age of 40. As more women decide to delay childbearing, the number of nulliparous women with cervical cancer may increase. Early-stage cervical cancer has been traditionally treated with radical hysterectomy or radical radiotherapy. Both forms of therapy will not preserve fertility. In 1987, a French surgeon, Professor …
Published in Research and Reviews: Journal of Oncology and Hematology · Vol. 1, Issue 3, 2012 · pp. 1–5 Read article
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Arsenic Induced Oxidative Stress and Its Possible Reversal by Chelation Therapy
Abstract: Arsenic (As) is a metalloid listed in group Va of the periodic chart. It exists in nature in the oxidation states +V (arsenate), +III (arsenite), 0 (arsenic) and −III (arsine). In the aqueous environment inorganic arsenic appears commonly in the oxidation states +V and +III as arsenous acid (As (III)), arsenic acid (As (V)), and their salts. Chronic and acute exposures of arsenic leads to cancer, cardiovascular disease (hypertension and …
Published in Research and Reviews: A Journal of Toxicology · Vol. 2, Issue 2, 2012 · pp. 16–37 Read article
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Impact of Cyber Security on Modern Warfare
Abstract: Cyber technology is frequently utilized to share information and data and to develop communication with a nearly infinite audience. This technology has developed a worldwide network. As a contemporary military instrument, cyber technology has the potential to be used in a variety of ways. Today’s cyber warfare dangers might be encountered in a variety of ways since modern cyber warfare has taken a backseat to physical war techniques in the …
Published in Journal Of Network security · Vol. 12, Issue 3, 2024 · pp. 29–33 Read article
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Role and impact of Dietary Antioxidants on Aging and Lifespan: A Review
Abstract: The effect of an antioxidant-rich diet on aging and lifespan has attracted significant scientific attention, primarily through the lens of the free radical theory of aging (FRTA). This theory suggests that oxidative stress caused by an accumulation of reactive oxygen species (ROS), accelerates aging and contributes to cellular damage. The accumulation of free radicals and the oxidative damage that is induced significantly contribute to the aging process. This imbalance plays …
Published in Research and Reviews : A Journal of Life Sciences · Vol. 15, Issue 2, 2025 · pp. 72–82 Read article
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Therapeutic Prospects and Comparative Bioactive Evaluation of Fenugreek Seed Extracts
Abstract: A medicinal plant with substantial therapeutic potential, fenugreek (Trigonella foenum-graecum L.) is rich in bioactive phytoconstituents. The phytochemical makeup and antioxidant properties of aqueous and methanolic fenugreek seed extracts were compared in this study. Phenolics, flavonoids, terpenoids, alkaloids, tannins, and saponins were found in both extracts, with the methanolic fraction showing greater intensity, according to preliminary phytochemical screening. The methanolic extract has higher levels of phenolic, flavonoid, and terpenoid content, …
Published in Research & Reviews : Journal of Botany · Vol. 15, Issue 2, 2026 · pp. 64–75 Read article
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Comprehensive account on role of catechin based polyphenols in nanocomposite formulations
Abstract: Antioxidants play a crucial role in wellness, health maintenance and the prevention of chronic and degenerative disease, in neuroprotection activities and protection against oxidative cellular damage by U.V. radiation. Polyphenols are secondary metabolites of plants usually involved in defense against ultraviolet radiation or aggression by pathogens. Antioxidant properties, free radical-scavenging abilities and antimicrobial properties of these polyphenols make them useful in the field of biomedical applications, used as food additives, …
Published in Journal of Polymer & Composites · Vol. 8, Issue 1, 2020 · pp. 26–31 Read article
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Polymer Modifications (Grafting): Approach to Enhance Versatility of Natural/Renewable Polymeric Materials
Abstract: Graft copolymers are branched copolymers containing a long chain of one monomer called preformed or backbone polymer and branches/grafts of long sequences of usually another monomer. A number of monomeric units can be grafted on the biopolymeric backbone by free radical graft copolymerization reaction using chemical free radical initiator to produce reactive sites on the backbone of biopolymer. The chemical combination of natural and synthetic polymers yields new materials which …
Published in Journal of Modern Chemistry & Chemical Technology · Vol. 8, Issue 3, 2017 · pp. 24–32 Read article
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Harnessing the Healing Potential of Khamira Abresham Hakim Arshad Wala in the Management of Different Health Conditions
Abstract: Khamira Abresham Hakim Arshad Wala (KAHAW) is a potent Unani remedy that plays a vital role in fortifying the body's vital organs and efficiently reducing free radicals by enhancing levels of antioxidant enzymes. The term 'Khamira' originated from the Unani system of medicine and was first introduced by the esteemed Hakeem during the Mughal period. This preparation involves incorporating herbal drugs into a base (Qiwam) containing sugar or honey, resulting …
Published in Research & Reviews : A Journal of Unani, Siddha and Homeopathy · Vol. 11, Issue 1, 2024 · pp. 7–13 Read article
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Molecular Docking of Nigella Sativa Phytocompound as Inhibitors of Transcription Factors NF-KB Implicated in Rheumatoid Arthritis
Abstract: Objectives: Nigella sativa, a plant considered around the world as the most treasured nutrient-rich herb for centuries together in different civilizations, is exceptionally known for its high levels of antioxidant properties. Free radical intensification due to oxidative stress plays a key role in the pathogenesis of rheumatoid arthritis by activating the NF-KB protein that regulates the expression of the genes involved in inflammation. Methods: This study involves in-silico approach to …
Published in International Journal of Molecular Biotechnological Research · Vol. 2, Issue 2, 2024 · pp. 42–55 Read article
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Design and Synthesis of Functionalized Copolymers for Enhanced Interfacial Compatibility in Polymer Matrix Composites
Abstract: Interfacial adhesion between the polymer matrix reinforcing phase affects significantly the mechanical and thermal behavior of polymer composites. The study reports on the design and synthesis of functionalized copolymers in the efforts to establish interfacial compatibility based on chemical design. The reinforcements were functionalized doping polar functional groups such as glycidyl methacrylate and maleic anhydride during free-radical copolymerization to form copolymerizing reactive sites that interacted with the reinforcement surfaces. Confirmation …
Published in Journal of Polymer & Composites · Vol. 14, Issue 2, 2026 · pp. 1404–1418 Read article
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Studies on the Self-Assembly of Steroids and DNA Mediated by Naphthalene-Based Amphiphilic Block Copolymer
Abstract: Amphiphilic block copolymers have attracted considerable interest in pharmaceutical and biomedical applications, including controlled drug release, gene delivery, and biomolecular sensing. In this study, fluorescent amphiphilic block copolymers were designed to facilitate interactions with biological molecules, such as DNA and antiviral agents, enabling their behavior to be monitored through fluorescence spectroscopy. Two novel block copolymers, poly(methyl methacrylate)-b-poly(dimethylaminoethyl methacrylate-co-naphthyl methacrylate) [PMMA-b-P(DMAEMA-co-NMA)] and poly(styrene)-b-poly(tert-butyl acrylate-co-naphthyl methacrylate) [PS-b-P(t-BA-co-NMA)], were synthesized successfully via atom …
Published in Journal of Polymer & Composites · Vol. 14, Issue 5, 2026 · pp. 183–196 Read article
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Effect of Time Exposure on Human Blood by Laser Flash Photolysis
Abstract: Diffuse reflectance laser flash photolysis has been used in blood sample to measure transient triplet spectra of free radical or reactive oxygen species (OH, O2, H2O2) generated in free cell systems was investigated using laser flash photolysis and electronic absorption spectra. In all cases, triplet–triplet absorption spectra with the application of this technique to studies concentration of normal human blood sample. The concentration of normal human blood sample is reduced …
Published in Journal of Materials & Metallurgical Engineering · Vol. 10, Issue 2, 2020 · pp. 15–20 Read article
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Dosimetric Aspects of Poly(ethylene- g - maleic anhydride)
Abstract: Electron spin resonance (ESR) spectroscopy is considered to be finger print technique to identify chemical structures of irradiated polymers. To prove this, ESR spectra of unirradiated and irradiated maleic anhydride grafted poly ethylene (MANPE)are recorded under different conditions. The ESR spectra show multiplehyperfine lines with latent structure corresponding to macro radicals . Radiation dose dependency on chemical structure of MANPE has been investigated by recording ESR spectra at various radiation …
Published in Journal of Polymer & Composites · Vol. 7, Issue 3, 2019 · pp. 20–23 Read article
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Cervical Spondylosis:A General Review.
Abstract: About 50% of people over the age of 50 experience neck pain and stiffness due to cervical spondylosis. Out of them, 25–40% have at least one episode of cervical radiculopathy, feeling of tingling sensation and numbness in the course of nerve. Now days, joint disorders are prevailing even in early age group after third decade of life.
Published in Research and Reviews: A Journal of Neuroscience · Vol. 12, Issue 1, 2022 · pp. 6–15 Read article
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Preliminary Phytochemical Screening, Antioxidant and antibacterial activity of Helicteres isora leaf extracts.
Abstract: Objective: To evaluate phytochemical screening, Anti-oxidant and anti-bacterial activity of Helicteres isora leaf extracts. Methods: Petroleum ether, chloroform, acetone, ethanol and hydroalcoholic extracts of leaves were used for the phytochemical screening. Anti-oxidant activity was measured using the 1,1-diphenyl-2-picrylhydrazyl (DPPH) and nitric oxide (No) radical scavenging tests; antibacterial activity was assessed using disc diffusion techniques. Results: The percentage yields for the petroleum ether, chloroform, acetone, ethanol and the hydroalcoholic extract were …
Published in Journal of Modern Chemistry & Chemical Technology · Vol. 13, Issue 2, 2022 · pp. 11–17 Read article
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Comparative Evaluation of In Vitro Antioxidant Activity of Bark, Flowers and Fruit Extracts of Pongamia pinnata
Abstract: In Indian history, the use of herbal remedies for various diseases has proved its efficacy. Free radicals are the main cause of disease such as diabetes, hypertension, inflammation, etc. The various parts of plant Pongamia pinnata possess good antioxidant activities. The objective of the study was to determine free radical scavenging activity of various plant parts by in vitro free radical scavenging assay such as DPPH assay, ABTS radical decolorization …
Published in Research & Reviews: A Journal of Pharmacognosy · Vol. 2, Issue 2, 2015 · pp. 14–21 Read article
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Oxidative stress analysis of cancer patient treated with Radiotherapy
Abstract: Oxidative stress is a term given to overload of free radicals in the body caused by an imbalance between levels of free radicals and antioxidants in the body. Reactive Oxygen Species (ROS) are free radicals also known as oxygen radicals that are produced by various physiological reactions inside the body leading to increasing oxidative stress that can lead to cell death. In case of cancer management, radiation therapy works by …
Published in Trends in Drug Delivery · Vol. 10, Issue 1, 2023 · pp. 28–31 Read article