Mumbai, India

The Indian Institutes of Technology is a prestigious group of autonomous public engineering and management institutes of India. The IITs are governed by the Institutes of Technology Act, 1961 which has declared them as "institutions of national importance", and lays down their powers, duties, framework for governance etc. The Institutes of Technology Act, 1961 lists sixteen institutes located at Bhubaneswar, Chennai, Delhi, Gandhinagar, Guwahati, Hyderabad, Indore, Jodhpur, Kanpur, Kharagpur, Mandi, Mumbai, Patna, Ropar, Roorkee and Varanasi. Each IIT is an autonomous institution, linked to the others through a common IIT Council, which oversees their administration. The IITs award degrees ranging from B.Tech to PhD.The IITs have a common admission process for undergraduate admissions. It was called IIT-JEE, which was replaced by Joint Entrance Examination in 2013. The post-graduate level program that awards M.Tech degree in engineering is administered by the older IITs . M.Tech admission is done on the basis of Graduate Aptitude Test in Engineering . In addition to B.Tech and M.Tech programs IITs also award other graduate degrees such as M.Sc in Engineering, Maths, Physics and Chemistry, MBA, PhD etc. Admission to these programs of IITs is done through Common Admission Test, Joint Admission Test for Masters and Common Entrance Examination for Design . Wikipedia.

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Indian Institute of Technology Bombay | Date: 2016-08-12

Embodiments herein provide an implantable Flow Streamliner for passively regulating blood streams in a TCPC subject. The implantable Flow Streamliner is configured to split a blood stream from an Inferior Vena Cava (IVC) and a blood stream from a Superior Vena Cava (SVC), without a direct collision between the blood streams. Further, the implantable Flow Streamliner is configured to distribute the blood stream from the IVC containing hepatic nutrients in proportion to a Left Pulmonary Artery (LPA) and a Right Pulmonary Artery (RPA). Further, the implantable Flow Streamliner is configured to distribute the blood stream from the SVC in equal proportion to the LPA and the RPA.

EID PARRY INDIA Ltd and Indian Institute of Technology Bombay | Date: 2016-02-25

The present disclosure includes a spray bottle assembly (100) which provides separate compartments for containing two or more constituents of a formulation, thereby, preventing premixing of the constituents before the first use, hence, increasing shelf life in a hassle-free way. The spray bottle assembly (100) comprises a spray head (200) for discharging the constituents of a formulation stored in the spray bottle assembly (100), a container bottle (300) for storing a passive constituent of the formulation; a storage receptacle (400) coupled with the container bottle (300), wherein said storage receptacle (400) facilitates the storage of an active constituent of the formulation isolated from the passive constituent; and a dispensing means (500) integrated with the storage receptacle (400).

Indian Institute of Technology Bombay | Date: 2016-11-07

A network capable of being used in a datacenter is described. The network can comprise a set of optical fiber rings, wherein each optical fiber ring carries data traffic on multiple wavelengths, and wherein each optical fiber ring is partitioned into multiple sectors. In some embodiments, each sector in the multiple sectors can comprise: (1) only one add-wavelength-selective-switch (add-WSS) communicatively coupled to only one optical fiber ring in the set of optical fiber rings, wherein the only one add-WSS is used for sending all data traffic that originates from the sector and is destined to other sectors; (2) an add-electro-optical-switch (add-EOS) communicatively coupled to the add-WSS; (3) a set of drop-wavelength-selective-switches (drop-WSSs) communicatively coupled to the set of optical fiber rings, wherein the set of drop-WSSs are used for receiving data traffic from other sectors; and (4) a drop-electro-optical-switch (drop-EOS) communicatively coupled to a drop-WSS in the set of drop-WSSs.

A method for speech enhancement in speech communication devices and more specifically in hearing aids for suppressing stationary and non-stationary background noise in the input speech signal signals is disclosed. The method uses spectral subtraction wherein the noise spectrum is updated using quantile-based estimation without voice activity detection and the quantile values are approximated by dynamic quantile tracking without involving large storage and sorting of past spectral samples. The technique permits use of a different quantile at each frequency bin for noise estimation without introducing processing overheads. The preferred embodiment uses analysis-modification-synthesis based on Fast Fourier transform (FFT) and it can be integrated with other FFT-based signal processing techniques used in the hearing aids and speech communication devices. A noise suppression system based on this method and using hardware with an audio codec and a digital signal processor chip with on-chip FFT hardware is also disclosed.

Indian Institute of Technology Bombay and Tata Consultancy Services Ltd. | Date: 2016-04-04

The present disclosure discloses a method and system for non-uniform intensity mapping using a high performance enterprise computing system with enhanced precision cooling, enabling extended over-clocking and over-voltage operation. A Kalman filter embedded in the processor predicts and corrects the input data flux for real-time use by taking care of over-clocking and over-voltage.

Mukhopadhyay A.,Indian Institute of Technology Bombay | Sheldon B.W.,Brown University
Progress in Materials Science | Year: 2014

Structural stability and mechanical integrity of electrode materials during lithiation/delithiation influence the performance of Li-ion batteries. Significant dimensional and volume changes are associated with variations in lattice parameters and transformations of crystalline/amorphous phases that occur during electrochemical cycling. These phenomena, which occur during Li-intercalation/deintercalation, Li-alloying/dealloying and conversion reactions, result in deformations and stress generation in the active cathode and anode materials. Such stresses can cause fragmentation, disintegration, fracturing, and loss in contact between current collectors and the active electrode materials, all of which can also expose fresh surfaces to the electrolyte. These degradation processes ultimately lead to capacity fade with electrochemical cycling for nearly all electrode materials, and are some of the major causes for the eventual failure of a Li-ion cell. Furthermore, severe stresses have made it nearly impossible to use higher capacity anode materials (e.g., Si, Sn) in practical batteries and also limit the 'usable' capacity of the present cathode materials (e.g., LiCoO2, LiMn2O 4) to nearly half the theoretical capacity. Against this backdrop, this review presents an overview of the causes and the relative magnitudes of stresses in the various electrode materials, highlights some of the more recent discoveries concerning the causes (such as stress development due to passivation layer formation), introduces the recently developed techniques for in situ observations of lithiation induced deformations and measurement of stresses, analyses the strategies adopted for addressing the stress-related issues, and raises various issues that still need to be addressed to overcome the stress related problems that are some of the major bottlenecks towards the development of new high-capacity electrode materials for Li-ion batteries. © 2014 Elsevier Ltd. All rights reserved.

Joseph R.,Indian Institute of Technology Bombay | Rao C.P.,Indian Institute of Technology Bombay
Chemical Reviews | Year: 2011

The ion and molecular recognition properties of 1, 3-diconjugates of calix[4]arene were studied. These recognitions were carried out in different solvent systems by using various spectroscopy techniques, and in some cases the species of recognition have been demonstrated by single crystal X-ray structure determination and/or by computational modeling studies. An aspect that requires further attention is the aqueous solubility of calix[4]arene conjugates. It is possible to build more binding sites on the calix[4]arene platform by introducing various donor groups in the vicinity of the lower rim phenolic group of calix[4]arene to provide higher coordination for lanthanides and other demanding ions. All of these receptors primarily possesses O- and N-binding centers, but are mostly deprived of carboxylato- and/or thiolato-moieties that may be required to mimic the selective recognition of metal ions by the corresponding apo-proteins.

Balakrishnan B.,Indian Institute of Technology Bombay | Banerjee R.,Indian Institute of Technology Bombay
Chemical Reviews | Year: 2011

Clinical translation and feasibility of tissue-engineered constructs depend on several factors which include the source of cells used, the properties of the scaffolds, and the signaling molecules. The region of origin and the state of differentiation of the chondrocytes seem to control the cellular response. Long-term culture of chondrocytes derived from young donors with high initial cell seeding density shows good results with respect to growth rate, in vitro expansion, and biosynthesis. Hydrogels derived from biopolymers have synergistic beneficial aspects of water swelling, cartilage-like behavior of hydrogel, as well as extracellular matrix mimicking property of biopolymers. The poor mechanical stability of these matrices and nonadhesive nature of cells onto the surface have been rectified to some extent by the hybridization of biopolymers with synthetic polymers and incorporation of peptides. Much attention should be given to develop injectable hybrid systems as those systems can solve the issues related with targeted minimal invasive delivery, biocompatibility, and mechanical strength.

Indian Institute of Technology Bombay | Date: 2016-06-09

An apparatus for an in-vivo power generation comprises a fuel convertor for converting glucose in a fluid to a hydrogen rich, low carbon fuel such as ethanol or methanol by the action of a bioenzyme on the glucose in the CSF. The fluid can be any one of cerebrospinal fluid, urine and glucose solution. The apparatus further comprises a biofuel cell comprising a cathode chamber and an anode chamber with a membrane assembly sandwiched between them. The membrane assembly comprises a cathode, an anode and a proton exchange membrane. The cathode is coated with an enzyme laccase, which enables extraction of oxygen when the fluid is passed through the cathode chamber. The oxygen from the cathode chamber and the hydrogen in the hydrogen rich fuel from the anode chamber diffuses through the proton exchange membrane and reacts at an ionic level to result in water and electrical power.

Indian Institute of Technology Bombay | Date: 2016-02-04

Embodiments herein provide a modular multilevel converter configured to increase one of number of an output voltage level and an output current level. The modular multilevel converter includes a plurality of legs where each leg includes a plurality of arms. Each arm of the modular multilevel voltage source converter includes a main wave shaping (WS) circuit, an auxiliary WS circuit and an arm inductor. The main WS circuit includes one or more half bridge sub-module(s) that includes a capacitor. The auxiliary WS circuit includes one or more full bridge sub-module(s) that includes a capacitor. Each arm of the modular multilevel current source converter comprises a plurality of half-bridge modules connected in parallel, and a plurality of arm capacitor connected across the plurality of half-bridge modules and one or more auxiliary full bridge module(s).

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