Search results for: M. Prem

Items from 1 to 20 out of 32 results

article

Timing of nasogastric tube insertion and the risk of postoperative pneumonia: an international, prospective cohort study

EuroSurg Collaborative, JC Glasbey, S Bibi, F Pata, more

Colorectal Disease > 22 > 12 > 2288 - 2297

Aim Aspiration is a common cause of pneumonia in patients with postoperative ileus. Insertion of a nasogastric tube (NGT) is often performed, but this can be distressing. The aim of this study was to determine whether the timing of NGT insertion after surgery (before versus after vomiting) was associated with reduced rates of pneumonia in patients undergoing elective colorectal surgery. Method...

article

Safety of hospital discharge before return of bowel function after elective colorectal surgery

EuroSurg Collaborative, SJ Chapman, R Blanco‐Colino, S Pérez‐Ajates, more

British Journal of Surgery > 107 > 5 > 552 - 559

Background Ileus is common after colorectal surgery and is associated with an increased risk of postoperative complications. Identifying features of normal bowel recovery and the appropriateness for hospital discharge is challenging. This study explored the safety of hospital discharge before the return of bowel function. Methods A prospective, multicentre cohort study was undertaken across an international...

article

Safety and efficacy of non‐steroidal anti‐inflammatory drugs to reduce ileus after colorectal surgery

EuroSurg Collaborative, SJ Chapman, D Clerc, R Blanco‐Colino, more

British Journal of Surgery > 107 > 2 > e161 - e169

Background Ileus is common after elective colorectal surgery, and is associated with increased adverse events and prolonged hospital stay. The aim was to assess the role of non‐steroidal anti‐inflammatory drugs (NSAIDs) for reducing ileus after surgery. Methods A prospective multicentre cohort study was delivered by an international, student‐ and trainee‐led collaborative group. Adult patients undergoing...

article

Refractory metal alloying: A new method for improving mechanical properties of tungsten heavy alloys

U. Ravi Kiran, A. Panchal, M. Prem Kumar, M. Sankaranarayana, more

Journal of Alloys and Compounds > 2017 > 709 > C > 609-619

Influence of mechanically alloyed tungsten-rhenium powders on the microstructure and mechanical properties of liquid phase sintered 89W-7Ni-3Fe-1Re heavy alloy was studied. Heat treatment and swaging were conducted on alloys prepared using both conventionally blended and mechanically milled powders. The results indicated the formation of bcc solid solution by high energy milling of tungsten and rhenium...

article

Sliding wear characteristics of solid lubricant coating on titanium alloy surface modified by laser texturing and ternary hard coatings

M. PREM ANANTH, R. RAMESH

Transactions of Nonferrous Metals Society of China > 2017 > 27 > 4 > 839-847

Titanium alloys are poor in wear resistance and it is not suitable under sliding conditions even with lubrication because of its severe adhesive wear tendency. The surface modifications through texturing and surface coating were used to enhance the surface properties of the titanium alloy substrate. Hard and wear resistant coatings such as TiAlN and AlCrN were applied over textured titanium alloy...

chapter

On the Computation of Non-uniform Input for List Decoding on Bezerra-Garcia Tower

M. Prem Laxman Das, Kripasindhu Sikdar

Lecture Notes in Computer Science > Applied Algebra, Algebraic Algorithms and Error-Correcting Codes > Regular Contributions > 237-246

Guruswami and Patthak, among many results, gave a randomized algorithm for computing the evaluation of regular functions of the Garcia-Stichtenoth tower at a large degree place. An algorithm, along the same lines, for Bezerra-Garcia tower is given. This algorithm uses Kummer theorem.

article

Refined Shacham–Waters ring signature scheme in Seo–Cheon framework

M. Prem Laxman Das, Jothi Rangasamy, R. Kabaleeshwaran

Security and Communication Networks > 9 > 13 > 2122 - 2134

Composite order bilinear groups have some elegant structural characteristics that are useful in constructing advanced cryptographic schemes. However, they are computationally less efficient than their prime order counterparts thereby making them impractical. Thus, instantiating cryptographic schemes based on composite order bilinear groups in prime order setting while preserving all the structural...

chapter

Pairing Computation on Twisted Edwards Form Elliptic Curves

M. Prem Laxman Das, Palash Sarkar

Lecture Notes in Computer Science > Pairing-Based Cryptography – Pairing 2008 > Implementation of Pairings > 192-210

A new form of elliptic curve was recently discovered by Edwards and their application to cryptography was developed by Bernstein and Lange. The form was later extended to the twisted Edwards form. For cryptographic applications, Bernstein and Lange pointed out several advantages of the Edwards form in comparison to the more well known Weierstraß form. We consider the problem of pairing computation...

chapter

Small signal modelling of GaN HEMT at 70GHz

B S Mahalakshmi, S Manikantan, P Bhavana, M Prem Anand, more

2014 International Conference on Signal Processing and Integrated Networks (SPIN) > 739 - 743

2014 International Conference on Signal Processing and Integrated Networks (SPIN)

A new 18-element small-signal model for GaN high electron mobility transistor is presented to operate at very high frequencies around 70 GHz. This model accounts for the need of a capacitor to represent the capacitive effect between the end of the drain electrode and contacting pad of the gate electrode. An extrinsic parasitic gate-drain capacitance as for higher frequencies this parameter becomes...

chapter

Small signal modelling of GaN HEMT at 70GHz

B S Mahalakshmi, S Manikantan, P Bhavana, Anand M Prem, more

2014 International Conference on Signal Processing and Integrated Networks (SPIN) > 506 - 510

2014 International Conference on Signal Processing and Integrated Networks (SPIN)

article

Imagine coastal sustainability

Simon Bell, Ana Correa Peña, Marko Prem, S. Bell, more

Ocean and Coastal Management > 2013 > 83 > Complete > 39-51

Since 2000 Coastal Area Management Programmes (CAMPs) supported by UNEP Mediterranean Action Plan (MAP) and the Priority Actions Programme Regional Activity Centre (PAP/RAC) have been engaging local communities in assessment of their coastal sustainability. The Methods used since 2000 have been based upon an evolving methodology which is now called Imagine. In 2010 The CAMP Levante de Almeria began...

chapter

FVF based CDTA and Its application

Mohammad A Maktoomi, Muzaffar A Siddiqi, M Prem Pyari

2012 International Conference on Communication, Information & Computing Technology (ICCICT) > 1 - 4

2012 International Conference on Communication, Information & Computing Technology (ICCICT)

This paper presents a modified CMOS implementation of the current differencing trans-conductance amplifier (CDTA). It uses one current source and one current sink to get the current differencing action. The proposed circuit uses lesser number of transistors, offers higher bandwidth, apart from other qualities associated with them. An application of this CDTA in analog filter is also demonstrated....

chapter

CDTA based logarithmic amplifier

Mohammad A. Maktoomi, R. K. Mishra, Muzaffar A. Siddiqi, M. Prem Pyari

2012 IEEE International Conference on Signal Processing, Computing and Control > 1 - 4

2012 IEEE International Conference on Signal Processing, Computing and Control (ISPCC)

A logarithmic amplifier using current differencing trans-conductance amplifier (CDTA) is presented. Both current as well as voltage mode inputs are possible. Output can also be voltage or current. Owing to its current mode operation it consumes less power. Furthermore, the instability problem found in op-amp based logarithmic amplifiers due to the presence of an active element in the feedback loop...

article

Analysis of Sliding Behaviour of Non-conformal Contacting Surfaces Subjected to Shear Traction

M. Prem Ananth, R. Ramesh

Procedia Engineering > 2012 > 38 > C > 2645-2656

Sliding behavior of the contacting surfaces of ball on flat plate surface under normal force and shear traction is studied in this work. A numerical approach that simulates the accumulation of stress in oscillating metal on metal contacts is proposed. The substrate material chosen for the analysis is ultra high strength steel, titanium alloy, magnesium alloy and aluminum alloy and the stainless steel...

article

List decoding codes on Garcia–Stictenoth tower using Gröbner basis

M. Prem Laxman Das, Kripasindhu Sikdar

Journal of Symbolic Computation > 2009 > 44 > 12 > 1657-1661

An account of the interpolation and the root-finding steps of list decoding of one-point codes is given. The interpolation step is reduced to the problem of finding the minimal element of the Gröbner basis of a submodule of a free module over a polynomial ring of one variable. The procedure for root-finding of the interpolation polynomial going modulo a large degree place is described from the tower...

article

Verarbeitung schlafbezogener Stimuli

K. Spiegelhalder, S.D. Kyle, M. Prem, B. Feige, more

Somnologie > 2009 > 13 > 1 > 4-11

Vorangegangene Arbeiten legen nahe, dass Menschen mit einem gestörten Nachtschlaf, insbesondere bei Vorliegen einer primären Insomnie, eine verstärkte Zuwendung der Aufmerksamkeit zu schlafbezogenen Stimuli zeigen (schlafbezogener „Attentional Bias“). Studien zu diesem Effekt verwenden üblicherweise standardisierte Reaktionszeitexperimente, in denen die Effekte einer großen Anzahl schlafbezogener...

article

Atomic resolution neutron holography (present status and future prospects)

L. Cser, G. Krexner, M. Markó, M. Prem, more

Physica B: Physics of Condensed Matter > 2006 > 385-386 > Part 2 > 1197-1199

The idea of atomic resolution neutron holography proposed by the authors of the present talk has been experimentally proven using both the internal source and internal detector concept in three various experiments carried out on samples simpsonite, PbCd alloy and PdH metalhydride. It was shown that the 3D image of the local atomic arrangement around the source/detector the position of nuclei could...

article

Neutron holography of metal–hydrogen systems

L. Cser, G. Krexner, M. Prem, I. Sharkov, more

Journal of Alloys and Compounds > 2005 > 404-406 > Complete > 122-125

Neutron holography constitutes a novel technique to obtain structural information on an atomic scale. It is based on the recording of the interference pattern of neutron waves coherently scattered by atomic nuclei located on a crystal lattice with an appropriate reference wave. The technique is particularly well suited to obtain holograms of metal–hydrogen systems. In one approach, a point-like source...

article

Metallic colloids in lithium oxide after electron irradiation

M. Prem, G. Krexner, F. Beuneu, P. Vajda

Physica B: Physics of Condensed Matter > 2004 > 350 > 1-3 Supplement > E999-E1002

Lithium oxide (Li ₂ O) has been studied in various contexts for more than two decades. Previous work on electron-irradiated Li ₂ O crystals has demonstrated a simultaneous formation of two populations of colloids of metallic lithium, one of which is associated with oxygen bubbles and a typical size of >10μm, the other one consisting of nanoclusters in the range of <10nm.The latter...

article

Regulation of synthesis of the pectolytic enzymes of Aspergillus niger

T. Panda, Sushma R. Nair, M. Prem Kumar

Enzyme and Microbial Technology > 2004 > 34 > 5 > 466-473

The synthesis of pectolytic enzymes appears to be considerably influenced by the glucose content of the cultivation medium containing mixed carbon sources in a predetermined optimal ratio. Glucose is an essential component in the fermentation, promoting cell growth while the synthesis of pectolytic enzymes was found to be induced by the second carbon source, corn, only when the glucose concentration...

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INFONA - science communication portal

Search results for: M. Prem

Timing of nasogastric tube insertion and the risk of postoperative pneumonia: an international, prospective cohort study

Safety of hospital discharge before return of bowel function after elective colorectal surgery

Safety and efficacy of non‐steroidal anti‐inflammatory drugs to reduce ileus after colorectal surgery

Refractory metal alloying: A new method for improving mechanical properties of tungsten heavy alloys

Sliding wear characteristics of solid lubricant coating on titanium alloy surface modified by laser texturing and ternary hard coatings

On the Computation of Non-uniform Input for List Decoding on Bezerra-Garcia Tower

Refined Shacham–Waters ring signature scheme in Seo–Cheon framework

Pairing Computation on Twisted Edwards Form Elliptic Curves

Small signal modelling of GaN HEMT at 70GHz

Small signal modelling of GaN HEMT at 70GHz

Imagine coastal sustainability

FVF based CDTA and Its application

CDTA based logarithmic amplifier

Analysis of Sliding Behaviour of Non-conformal Contacting Surfaces Subjected to Shear Traction

List decoding codes on Garcia–Stictenoth tower using Gröbner basis

Verarbeitung schlafbezogener Stimuli

Atomic resolution neutron holography (present status and future prospects)

Neutron holography of metal–hydrogen systems

Metallic colloids in lithium oxide after electron irradiation

Regulation of synthesis of the pectolytic enzymes of Aspergillus niger

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