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Search Results: 1 - 10 of 223691 matches for " R. Agarwala "
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A Sustainable Energy Efficiency Solution in Power Plant by Implementation of Perform Achieve and Trade (PAT) Mechanism  [PDF]
Rajesh Kumar, Arun Agarwala
Open Journal of Energy Efficiency (OJEE) , 2013, DOI: 10.4236/ojee.2013.24020
Abstract:

An enhanced energy efficiency scheme, “Perform, Achieve and Trade” (PAT) is explored in relation to the existing carbon market in India, particularly the Clean Development Mechanism, Renewable Energy Certification and possible Nationally Appropriate Mitigation Actions. The PAT scheme incentivises energy-intensive large industries and facilities for Enhance Energy Efficiency, through technology upgrade and improvement in process. The PAT scheme currently identified 478 designated consumers from eight energy intensive industrial sectors namely, thermal power plants, iron and steel, cement, textiles, chlor-alkali, aluminum, fertilisers and pulp & paper. The threshold limit in thermal power plant sector to become a PAT designated consumer is 30,000 tonne of oil equivalent annual energy consumption. In the first PAT cycle, run through 2012 to 2015, total 144 designated consumers from various states have been identified with individual target. Thermal power plant sector has been categorized on the basis of their fuel input into three subsectors i.e. gas, oil and coal based plants. This paper reviews the state of the art in PAT mechanism design and operational features for implementation on thermal power plant sector. The possibility of implementing an Emission Trading Scheme (ETS) in India is explored from political and institutional perspectives.

Long term survival after coronary endarterectomy in patients undergoing combined coronary and valvular surgery – a fifteen year experience
Sanjay Kumar, Sandeep Agarwala, Charlie Talbot, R Unnikrishnan Nair
Journal of Cardiothoracic Surgery , 2008, DOI: 10.1186/1749-8090-3-15
Abstract: Between 1989 and 2003, 237 patients underwent CABG with valve surgery under a single surgeon at our institution. Of these, 41 patients needed CE. Data was retrospectively obtained from hospital records and database. Further follow-up was obtained by telephone interview. All variables were analyzed by univariate analysis for significant factors relating to hospital mortality. Morbidity and long term survival was also studied. There were 29 males and 12 females with a mean age of 67.4 ± 8.1 and body mass index of 26.3 ± 3.3. Their mean euroscore was 7.6 ± 3.2 and the log euro score was 12.2 ± 16.1.Thirty-two patients were discharged from the intensive therapy unit within 48 hours after surgery. Average hospital stay was 12.7 ± 10.43 days. Thirty day mortality was 9.8%. Six late deaths occurred during the 14 year follow up. Ten year survival was 57.2% (95% CL 37.8%–86.6%). Three of the survivors had Class II symptoms, with one requiring nitrates. None required further percutaneous or surgical intervention. We compared the result with the available mortality figure from the SCTS database.Compared to the SCTS database for these patients, we have observed that CE does not increase the mortality in combined procedures. By accomplishing revascularization in areas deemed ungraftable, we have shown an added survival benefit in this group of patients.Coronary endarterectomy (CE), first described by Bailey et al in 1957, has been shown to benefit patients with advanced coronary atheroma by providing complete revascularization. [1] The safety and long-term efficacy of the procedure, although controversial, has been demonstrated in earlier studies. [2,3]There have been no studies on the effect of endarterectomy in patients undergoing valve surgery with concomitant coronary bypass. This study was aimed at auditing the mortality and morbidity of patients undergoing combined valvular and coronary artery surgery with additional CE. We also looked at the symptomatic relief and long-te
Anaesthetic implications of a parturient with antiphospholipid antibody syndrome
T Singh, SM Ghosh, R Agarwala, K Rahul
Southern African Journal of Anaesthesia and Analgesia , 2010,
Abstract:
Preliminary comparative RH mapping between river buffalo chromosome 6 (BBU6) and bovine chromosome 3 (BTA3)
N. Bonvino Stafuzza,P. Ianella,M. Nunes Miziara,R. Agarwala
Italian Journal of Animal Science , 2010, DOI: 10.4081/ijas.2007.s2.425
Abstract:
Pediatric rhabdomyosarcomas and nonrhabdomyosarcoma soft tissue sarcoma
Agarwala Sandeep
Journal of Indian Association of Pediatric Surgeons , 2006,
Abstract: Tumors arising from the soft tissues are uncommon in children, accounting for about 6% of all childhood malignancies. More than half (53%) of these originate from the striated muscles and are called rhabdomyosarcomas (RMS) the remaining are nonrhabdomyosarcoma soft tissue sarcomas (NRSTS). Almost two-thirds of RMS cases are diagnosed in children < 6 years of age. They can arise at varied locations like the head and neck region, genitourinary tract, extremities, trunk and retroperitoneum. Pathologically RMS is now classified as superior, intermediate and poor outcome histologies. For stratification of treatment and also comparison of results the RMS are now staged both by the clinical grouping and the TNM staging systems. The ultimate outcome depends on the site, extent of disease and histology. Currently, approximately 70% of the patients survive for 5 years or more and are probably cured. This is credited to the use of multi-modal, risk-adapted therapy, refinements in tumor grouping and better supportive care which has emerged out of cooperative studies like Intergroup Rhabdomyosarcoma Study (IRS) and the International Society of Pediatric Oncology studies (SIOP). The treatment involves chemotherapy, radiotherapy and organ/function preserving surgery. The gold standard chemotherapy is still vincristine, actinomycin D and cyclophosphamide (VAC) regime with high doses of intensity bone marrow rescue with colony stimulating factors. The NRSTS are rare and of heterogenous histologies and so it has been difficult to arrive at a treatment strategy for these. What is definitely understood is that these are usually immature and poorly differentiated tumors that respond poorly to chemotherapy and so surgical resection forms the mainstay of treatment with adjuvant radiotherapy and chemotherapy to prevent local recurrences. In all likelihood, the molecular analysis of RMS will further refine current classification schemes and knowledge of genetic features of the tumors will significantly improve the ability of investigators to identify patients at lower or higher risk of treatment failures, thus paving the way for advances in risk-based therapy.
Geometrically relating momentum cut-off and dimensional regularization
Susama Agarwala
Physics , 2011, DOI: 10.1142/S0219887812500818
Abstract: The $\beta$ function for a scalar field theory describes the dependence of the coupling constant on the renormalization mass scale. This dependence is affected by the choice of regularization scheme. I explicitly relate the $\beta$-functions of momentum cut-off regularization and dimensional regularization on scalar field theories by a gauge transformation using the Hopf algebras of the Feynman diagrams of the theories.
A Perspective on Regularization and Curvature
Susama Agarwala
Physics , 2009, DOI: 10.1007/s11005-010-0402-8
Abstract: A global connection on the Connes Marcolli renormalization bundle relates $\beta$-functions of a class of regularization schemes by gauge transformations, as well as local solutions to $\beta$-functions over curved space-time.
The geometric $β$-function in curved space-time under operator regularization
Susama Agarwala
Physics , 2009,
Abstract: In this paper, I compare the generators of the renormalization group flow, or the geometric $\beta$-functions for dimensional regularization and operator regularization. I then extend the analysis to show that the geometric $\beta$-function for a scalar field theory on a closed compact Riemannian manifold is defined on the entire manifold. I then extend the analysis to find the generator of the renormalization group flow for a conformal scalar-field theories on the same manifolds. The geometric $\beta$-function in this case is not defined.
Dynkin operators, renormalization and the geometric $β$ function
Susama Agarwala
Mathematics , 2012,
Abstract: In this paper, I show a close connection between renormalization and a generalization of the Dynkin operator in terms of logarithmic derivations. The geometric $\beta$ function, which describes the dependence of a Quantum Field Theory on an energy scale defines is defined by a complete vector field on a Lie group $G$ defined by a QFT. It also defines a generalized Dynkin operator.
Dihedral symmetries of multiple logarithms
Susama Agarwala
Mathematics , 2011,
Abstract: This paper finds relationships between multiple logarithms with a dihedral group action on the arguments. I generalize the combinatorics developed in Gangl, Goncharov and Levin's R-deco polygon representation of multiple logarithms to find these relations. By writing multiple logarithms as iterated integrals, my arguments are valid for iterated integrals as over an arbitrary field.
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