Jamia Millia Islamia University

Delhi, India

Jamia Millia Islamia is a public central university located in Delhi. It was established at Aligarh in United Provinces, India during British rule in 1920. It became a Central University by an act of the Indian Parliament in 1988. Wikipedia.

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Ali I.,Jamia Millia Islamia University
Separation and Purification Reviews | Year: 2014

Water is the most important and essential component of earth's ecosystem, playing a vital role in the proper functioning of flora and fauna. But water resources are contaminating continuously. The whole world may be in great water scarcity in the coming few decades. Among many water treatment methods, adsorption is considered to be one of the best. Many articles describe adsorption applications for water treatment in batch mode. Only few works report laboratory, pilot and commercial applications of adsorption technology. This review is a critical evaluation of the contribution of adsorption technology at laboratory, pilot and process scales. Water treatment, through column operations, has been divided into two parts: removal of (i) inorganic and (ii) organic pollutants. Attempts have been made to evaluate the application of adsorption columns at the ground level. Besides, efforts have also been made to emphasize the importance of adsorption columns at commercial levels to tackle water treatment problems in the future. © 2014 Copyright Taylor and Francis Group, LLC.

Anjali T.,Jamia Millia Islamia University
Carbohydrate Polymers | Year: 2012

The periodate oxidation reaction of carboxymethyl cellulose involve the primary and secondary hydroxyl groups of the pyranose ring. The reaction is accompanied by the opening of the pyranose ring and resulting product is dialdehyde carboxymethyl cellulose along with some hydrated forms. In this process the glucosidic bond becomes weaker; the formation of carboxyl groups induces a depolymerization, thus reducing the polymerization degree and the physical and mechanical strength of the material. The reaction has been has been carried out at pH 3.5, temperature 45 °C for 0.5-4 h. © 2011 Elsevier Ltd. All Rights Reserved.

The free radical-mediated damage to proteins results in the modification of amino acid residues, cross-linking of side chains and fragmentation. l-Tyrosine and protein bound tyrosine are prone to attack by various mediators and reactive nitrogen intermediates to form 3-nitrotyrosine (3-NT). Activated macrophages produce superoxide ( O2·-) and NO, which are converted to peroxynitrite ONO2-. 3-NT formation is also catalyzed by a class of peroxidases utilizing nitrite and hydrogen peroxide as substrates. Evidence supports the formation of 3-NT in vivo in diverse pathologic conditions and 3-NT is thought to be a relatively specific marker of oxidative damage mediated by peroxynitrite. Free/protein-bound tyrosines are attacked by various RNS, including peroxynitrite, to form free/protein-bound 3-NT, which may provide insight into the etiopathogenesis of autoimmune conditions. The formation of nitrotyrosine represents a specific peroxynitrite-mediated protein modification; thus, detection of nitrotyrosine in proteins is considered as a biomarker for endogenous peroxynitrite activity. The peroxynitrite-driven oxidation and nitration of biomolecules may lead to autoimmune diseases such as systemic lupus. The subsequent release of altered proteins may enable them to act as antigen-inducing antibodies against self-proteins. Hence, tyrosine nitrated proteins can act as neoantigens and lead to the generation of autoantibodies against self proteins in various autoimmune disorders. © 2013 American Society for Histocompatibility and Immunogenetics.

Ali I.,Jamia Millia Islamia University
Separation and Purification Reviews | Year: 2010

Due to overgrowth in population, industrialization and civilization, demands for water are increasing geometrically. Therefore, alternative sources of water are required and wastewater treatment and recycling may serve this purpose. Among various water treatment technologies, adsorption onto activated carbon is in the front line due to its universal nature. Activated carbon is the best adsorbent able to capture inorganic, as well as organic, pollutants that contaminate water resources. Inorganic pollutants, especially metal ions, are more dangerous due to their toxic and possibly carcinogenic natures. Also they are most often persistent and difficult to biodegrade. The present article describes the quest to find an economically viable substitute to active carbon adsorbent to remove toxic metal ions. A brief discussion of design of batch and column adsorption experiments, development of inexpensive adsorbents, and experimental conditions of metal ions removal by batch and column procedures is included. Efforts have also been made to differentiate adsorption versus speciation of metal ions. Copyright © Taylor & Francis Group, LLC.

Borah D.,Tezpur University | Dasgupta A.,Jamia Millia Islamia University
Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics | Year: 2015

The Fermi gamma ray space telescope data have pointed towards an excess of gamma rays with a peak around 1-3 GeV in the region surrounding the galactic center. This anomalous excess can be described well by a dark matter candidate having mass in the range 31-40 GeV annihilating into bb pairs with a cross section of (σν)≃(1.4-2.0)×10-26 cm3/s. In this work we explore the possibility of having such a dark matter candidate within the framework of a radiative neutrino mass model. The model is a simple extension of the standard model by an additional U(1)X gauge symmetry where the standard model neutrino masses arise both at tree level as well as radiatively by the anomaly free addition of one singlet fermion NR and two triplet fermions ∑1R, ∑2R with suitable Higgs scalars. The spontaneous gauge symmetry breaking is achieved in such a way which results in a residual Z2 symmetry hence providing a stable cold dark matter candidate. We show that the singlet fermionic dark matter candidate in our model can give rise to the galactic center gamma ray excess. The parameter space which simultaneously satisfies the constraints on relic density, direct detection scattering as well as collider bounds essentially corresponds to an s-wave resonance where the gauge boson mass mX is approximately twice that of dark matter mass mχ. We also discuss the compatibility of such a light fermion singlet dark matter with light neutrino mass. © 2014 The Authors.

Ali I.,Jamia Millia Islamia University
Current Cancer Drug Targets | Year: 2011

For the last one decade, scientists are working at developing nano anti-cancer drugs with the claim of ideal ones due to their targeted chemotherapic nature. These drugs have many beneficial properties such as targeted drug delivery and gene therapy modalities with minimum side effects. This article describes pros and cons and future perspectives of nano anti-cancer drugs. Efforts have been made to address the importance, special features, toxicities (general, blood identities, immune system and environmental) and future perspectives of nano anti-cancer drugs. It was concluded that nano anti-cancer drugs may be magic bullet drugs for cancer treatments leading to a bright future of the whole world. © 2011 Bentham Science Publishers Ltd.

Ahsan H.,Jamia Millia Islamia University
Diabetes and Metabolic Syndrome: Clinical Research and Reviews | Year: 2015

One of the major complications in patients with diabetes is diabetic retinopathy (DR), a leading cause of blindness worldwide. It causes visual impairment and finally blindness, a result of long-term accumulated damage to the small blood vessels in the retina. It takes several years before any clinical symptoms of retinopathy appear in diabetic patients. Consequently, glycemic control, blood pressure and lipid-lowering therapy have all shown benefits in reducing the incidence and progression of DR. A number of hyperglycemia-induced metabolic stresses have been implicated in the pathophysiology of DR. The microvasculature of the retina responds to hyperglycemia through a number of biochemical changes, including the activation of protein kinase C (PKC), increased advanced glycation end-products (AGEs) formation, polyol pathway and oxidative stress. There is an accumulating body of evidence indicating that inflammation and neurodegeneration play an important role in the pathogenesis of DR. © 2014 Diabetes India. Published by Elsevier Ltd. All rights reserved.

The invention relates to a process of making ammonia gas indicator, using single wall carbon nanotubes (SWCNTs)/alumina (Al2O3) composite thick film, comprising the steps of (a) preparing a nanoporous SWCNTs/Al2O3 composite thick film of thickness in the range of 60 to 65m prepared by sol-gel process; (b) curing the film at a temperature in the range of 450 C. to 500 C. for a time period in the range 0.5 to 2 hour to obtain a cured sample; (c) providing thick film planar electrodes of AgPd paste on same side of the cured sample by screen printing; and (d) heat treating the resultant cured sample with electrodes at a temperature in the range of 800 C. to 850 C. for a time period in the range of 0.5 to 2 hours to obtain a gas indicator.

The invention relates to a compact thermal reactor for rapid growth of high quality carbon nanotubes (CNT_(2)) produced by chemical process with low power consumption comprising: a processing chamber having a vacuum vessel, the vacuum vessel having a side cover formed of a first side wall and a second side wall, a top cover, a bottom cover connected to a support stand; feed through housing provided with a substrate; a heating system consisting of a heating element and back means; and at least one each inlet and outlet for gas injection into the process chamber for growing high quality carbon nanotubes over the substrate.

Ali I.,Jamia Millia Islamia University
Chemical Reviews | Year: 2012

A study was conducted to demonstrate new generation adsorbents for water treatment. Nanosize adsorbents were prepared and used for the removal of water pollutants. Efforts were made to discuss various aspects of water treatment by adsorption using nanoadsorbents due to the importance of water quality and emerging utilities of nanotechnology. The particles of 1-100 nm size were called nanoparticles, which offered the potential for the treatment of contaminated water. The adsorption technology is capable to remove inorganic pollutants from water. The new generation adsorbents demonstrated that the adsorption technology was capable to remove inorganic pollutants from water. The most commonly used nanoparticles for the removal of metal ions were oxides of aluminum, iron and titanium. Some workers also used nanoparticles of iron oxide for efficient removal of metal ions due to their high surface areas and ease of preparation.

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