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210 articles for “(DOP)”
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Recent Advances of Distributed Optical Fiber Raman Amplifiers in Ultra Wide Wavelength Division Multiplexing Telecommunication Networks
Abstract: ABSTRACTRecently, many research works have been focused on the fiber optic devices for optical communication systems. One of the main interests is on the optical amplifiers to boost a weak signal in the communication systems. In order to overcome the limitations imposed by electrical regeneration, a means of optical amplification was sought. The competing technology emerged: the first was Raman amplification. One reason was that the optical pump powers required …
Published in Journal of Communication Engineering & Systems · Vol. 1, Issue 1-3, 2011 · pp. 44–59 Read article
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Innovative Developments of Optical Fiber using Multiplexing/Demultiplexing
Abstract: AbstractAs of late, numerous exploration works have been centered around the fiber optic gadgets for optical correspondence frameworks. One of the principle hobbies is on the optical intensifiers to support a powerless flag in the correspondence frameworks. Keeping in mind the end goal to conquer the confinements forced by electrical recovery, a method for optical intensification was looked for. The contending innovation developed: the first was Raman enhancement. One reason …
Published in Journal of Communication Engineering & Systems · Vol. 5, Issue 1, 2015 · pp. 21–29 Read article
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Wavelength Division Multiplexing in Optical Networks Using Radio Over Fiber
Abstract: AbstractThis paper contains a detailed study about WDM (wavelength division multiplexing) optical networks. The bandwidth, speed and loss of signals in communication have a reason to worry in communication systems; WDM makes the possible solution to resurrect the systems of communications with the help of this technology. The issue emerges when the interest for transfer speed in a fiber optic system surpasses the present limit, without requiring any extra fiber, …
Published in Journal of Communication Engineering & Systems · Vol. 9, Issue 3, 2019 · pp. 12–15 Read article
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Smoking and Body Weight: Is There Any Relation?
Abstract: Tobacco is a tall, green leafy plant, originally grown in South and Central America, but now cultivated throughout the world. The link between smoking and body weight is evident as early as adolescence. Nicotine acts on nicotinic cholinergic receptors in the brain and autonomic ganglia. The binding of nicotine to the nicotinic receptors opens ion channels, allowing entry of sodium and calcium, thereby; augment the release of various neurotransmitters. This …
Published in Research and Reviews: A Journal of Health Professions · Vol. 3, Issue 3, 2013 · pp. 33–36 Read article
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Anthropometric Measurements as Cardio-Metabolic Risk Factors Did Not Associate with Echocardiography Determinants in Type 2 Diabetes
Abstract: Obesity and Type 2 diabetes (T2D) are risk factors for cardiovascular events. Anthropometric measurements are considered as independent risk factors for these events. This study aimed to assess the link between anthropometric measurements that are considered as risk factors for cardiovascular events and echocardiography determinants in T2D. A total number of 50 T2D patients (20 males and 30 females) with a median age of 58.8 years were included in this …
Published in Research and Reviews: A Journal of Health Professions · Vol. 5, Issue 1, 2015 · pp. 1–6 Read article
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An overview on the diagnosis and approaches in pharmacological management of Parkinson’s disease
Abstract: Parkinson’s disease (PD) might be a mutual neurodegenerative disease considered by a movement disorder containing rest tremor, bradykinesia, rigidity, and postural instability, and second-leading reason of dementia and is categorized by an advanced loss of dopaminergic neurons within the neural structure alongside the occurrence of intraneuronal α-synuclein-positive enclosures. PD is identified where bradykinesia happens along with rigidity or tremor within the existence of supporting features. The diagnosis is clinical, and …
Published in Research and Reviews: A Journal of Neuroscience · Vol. 11, Issue 1, 2021 · pp. 1–8 Read article
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Spontaneous Popliteal Arteriovenous Fistula Presenting as Gangrene Foot
Abstract: An arteriovenous fistula (AVF) of the popliteal artery is a rare condition, mainly to be seen in relation to trauma to the knee in road traffic accidents, firearm injuries and stab wounds. In this article a case report is presented of a 50 year old female admitted with complaints of blackish discoloration of right foot and prominent veins on lower limb. Gangrenous changes of limb involved up to lower leg …
Published in Research and Reviews : Journal of Surgery · Vol. 6, Issue 2, 2017 · pp. 13–15 Read article
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Luminescent Phenomena and Materials: Fundamentals, Developments, and Multidisciplinary Applications
Abstract: Luminescence, defined as the emission of light without significant heat generation, represents a fundamental phenomenon bridging physics, chemistry, materials science, and biotechnology. Over the centuries, the understanding of luminescence has evolved from simple observational curiosity to a sophisticated quantum-mechanical framework describing electronic transitions in atoms, molecules, and solids. This review provides a comprehensive overview of the historical development, fundamental mechanisms, classifications, and material systems associated with luminescence. It places particular …
Published in Journal of Nanoscience, NanoEngineering & Applications · Vol. 16, Issue 2, 2026 Read article
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Properties and Recent Progress in Oxide-Based Thermoelectric Materials
Abstract: Advanced thermoelectric materials that can be used efficiently for energy conversion have received significant research interest for the last decade because of the mounting demand for sustainable and eco-friendly energy technologies. The main advantage of thermoelectric materials is their capability to directly convert the waste heat into electrical energy which makes them highly promising for the recovery of waste heat from industrial processes, automotive systems and power generation applications. Oxide-based …
Published in International Journal of Energy and Thermal Applications · Vol. 4, Issue 2, 2026 Read article
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Heteroatom modified carbon dots (N, P, K): synthesis, surface functionalization, and prospects for soil‑fertility enhancement
Abstract: Heteroatom‑functionalized carbon dots (H‑CDs) have emerged as a class of zero‑dimensional carbon nanomaterials offering tunable optical, electronic, and catalytic properties through controlled nitrogen, phosphorus, and potassium doping. This review highlights the chemistry and chemical‑technology dimensions of N‑, P‑, and K‑doped carbon dots (N‑CDs, P‑CDs, K‑CDs), focusing on their synthesis strategies, surface functionalization, and structure–property relationships. Conventional routes such as microwave‑assisted pyrolysis, hydrothermal carbonization, and one‑pot solvothermal methods are discussed, with …
Published in Journal of Modern Chemistry & Chemical Technology · Vol. 17, Issue 2, 2026 · pp. 30–35 Read article