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Energy cost and cardiorespiratory changes during the practice of Surya Namaskar

B Sinha, U S Ray, A Pathak, W Selvamurthy
2004 Indian journal of physiology and pharmacology  
Surya Namaskar (SN), a group of Yogic exercise consists of a set of twelve postures which is practiced by some of the yoga practitioners.  ...  INTRODUCTION The literal meaning of Surya Namaskar (SN) (a group of Yogic Asanas) is salutation to the Sun.  ...  TABLE II : II Different cardiorespiratory parameters in different postures of Surya Namaskar. (Values are mean ± SEM).  ... 
pmid:15521557 fatcat:hced34q455gaxoq6pw4wajyoba

Spherical nanoindentation stress–strain curves

Siddhartha Pathak, Surya R. Kalidindi
2015 Materials science & engineering. R, Reports  
More recently, Kalidindi and Pathak [12] and Moseson et al.  ...  Recently, the use of this technique on bone samples has also been validated by Pathak et al. [63] .  ... 
doi:10.1016/j.mser.2015.02.001 fatcat:jf42jo3jyvgshfwdu3ma6k3r7i

Understanding pop-ins in spherical nanoindentation

Siddhartha Pathak, Jessica L. Riesterer, Surya R. Kalidindi, Johann Michler
2014 Applied Physics Letters  
a ) a Electronic addresses: and Telephone: þ1 (505) 667-2082. Fax: þ1 (505) 665-9030.  ... 
doi:10.1063/1.4898698 fatcat:whrv2w2osndrhchmcxj3vxg7om

Study of clinical profile and outcomes of Percutaneous Coronary Intervention in ST Elevation Myocardial Infraction

Parash Koirala, Ratna Mani Gajurel, Chandra Mani Poudel, Hemant Shrestha, Surya Devkota, Sanjeev Thapa, Shovit Thapa, Surya Pathak
2019 Nepalese Heart Journal  
and Aims: Percutaneous Coronary Intervention (PCI) is the preferred method of revascularization in Acute ST Elevation Myocardial Infarction (STEMI). Our aim was to study the clinical profile and outcomes of patients who underwent PCI for STEMI at tertiary cardiac centre of Nepal. Methods: It is a retrospective, single centre study, performed at Tribhuvan University, Manmohan Cardiothoracic Vascular and Transplant Centre, Kathmandu, Nepal. All patients who underwent PCI for STEMI from November
more » ... 15 to July 2018 were enrolled in this study. All the data were collected from hospital registry and cath lab records. Results: The Study showed that out of 232 patients who presented with STEMI, 74.5% were male with average age of 57.39 years. The mean time of presentation after onset of symptom/s was 17.5 hours. About 66% patients presented in less than 12 hours of symptoms onset, 21% presented at 12-24 hours of symptoms onset and 13% patients presented late. Primary PCI was done in 87% of patients. Almost all patients (98.2%) underwent coronary artery stenting with drug eluting stents. Multivessel PCI during index procedure was done in 7 patients. TIMI III flow following PCI was achieved in 97% cases. Average LVEF at discharge was 44.73%. There were 8 deaths, all after Primary PCI. In-hospital mortality rates for patients presenting with and without cardiogenic shock were 38.46% and 1.59% respectively. The overall mortality rate was 3.98%. Conclusion: This study has reemphasized that PCI is effective in the management of STEMI cases in Nepal with improving mortality rates and decreasing complications. Minimizing the delayed presentation after the onset of symptoms should be one of the prime focuses for effective management of STEMI.
doi:10.3126/njh.v16i2.26318 fatcat:vfqr2viwlbbjtg6ohdbiivh4ey

Viscoelasticity and high buckling stress of dense carbon nanotube brushes

Siddhartha Pathak, Z. Goknur Cambaz, Surya R. Kalidindi, J. Gregory Swadener, Yury Gogotsi
2009 Carbon  
We report on the mechanical behavior of a dense brush of small-diameter (1-3 nm) noncatalytic multiwall (2-4 walls) carbon nanotubes (CNTs), with ~10 times higher density than CNT brushes produced by other methods. Under compression with spherical indenters of different radii, these highly dense CNT brushes exhibit a higher modulus (~17-20 GPa) and orders of magnitude higher resistance to buckling than vapor phase deposited CNT brushes or carbon walls. We also demonstrate the viscoelastic
more » ... or, caused by the increased influence of the van der Waals' forces in these highly dense CNT brushes, showing their promise for energy-absorbing coatings. Publication E -127 -
doi:10.1016/j.carbon.2009.03.042 fatcat:mne5irr7rjc3hffdoymmdndoeq

Toward a structural view of co-opetition in supply networks

Surya D. Pathak, Zhaohui Wu, David Johnston
2014 Journal of Operations Management  
Pathak et al. (2007b) is one of the first studies to systematically examine the structural arrangements of supply networks.  ...  as firms collectively attempt to fulfill demand through individual firm-level actions while responding to changes in both the environment and actions of other firms in the network (Choi et al., 2001; Pathak  ... 
doi:10.1016/j.jom.2014.04.001 fatcat:uexcnhya5rhlbjlczdccq4jr5a

Study of clinical profile and indications of Permanent Pacemaker Insertion in Nepali population presenting to tertiary care centre in Nepal

Shovit Thapa, Ratna Mani Gajurel, Chandra Mani Poudel, Hemant Shrestha, Sanjeev Thapa, Surya Devkota, Parash Koirala, Surya Pathak
2019 Nepalese Heart Journal  
and Aims: Although pacemaker implantation has been done regularly in Nepal for the last 20 years, there is no large scale published data of pacemaker implantations. Manmohan Cardiothoracic Vascular and Transplant Centre (MCVTC) have been providing uninterrupted permanent pacemaker implantation services since its inception. This led us an opportunity to report the data regarding permanent pacemaker implantations in MCVTC. Methods: Hospital records of all patients who had undergone PPI at MCVTC
more » ... tween Shrawan 2070 – Ashad 2075/ July 2013- June 2018 (5 years) were searched for and all available data were retrospectively analyzed. Results: A total of 277 cases underwent PPI at MCVTC in 5 years. Out of these 165 (59.5%) were male with male to female ratio of 1.47. The mean age was 65.82±16.10 years with 3 (1.1%) cases of <20 years of age and almost 70% of cases aged >60 years. Dual chamber units were implanted in 49 (17.7%) cases. Only 13 women (11.6%) received dual chamber pacemaker compared with 36 men (21.8%) (P = 0.029). The most common indication for PPI was complete atrioventricular block 165 (59.6%) followed by sick sinus syndrome 65 (23.5%). Hypertension 84 (30.3%) was the most common co morbidity present. Complication occurred in 5.4% of cases with wound infection as commonest complication and single mortality due to postoperative complications post-RV repair. Conclusion: Single chamber pacemaker was the most commonly used pacemaker. Dual chamber pacemaker was more common in younger patients. Complete heart block was the most common indication. Permanent pacemaker insertion was effective and relatively safe procedure in MCVTC with few complications.
doi:10.3126/njh.v16i2.26317 fatcat:dzv6sldtofaetbyxmsjoshe7ui

An Extraordinary Case of Infective Endocarditis at its Extreme forms of Systemic Embolisation: A Rare Case Report

Suman Adhikari, Ratna Mani Gajurel, Chandra Mani Paudel, Surya Devkota, Smriti Shakya, Parash Koirala, Shovit Thapa, Surya Raj Pathak, Manju Sharma, Vijay Yadav
2020 Nepalese Heart Journal  
The overall incidence of embolic complications in infective endocarditis (IE) ranges from 20 to 50%. It is very uncommon for a treating physician to encounter a patient having multiple manifestations of systemic embolisation.Acute coronary syndrome complicating infective endocarditis is an uncommon finding and the incidence has been found to be upto 10%.Cerebral embolism should be suspected in patients with infective endocarditis and neurological sign and symptoms. Neurologic manifestations can
more » ... sometimes be the first presentation of infective endocarditis. We present the scenario of a 51-year-old diabetic male with chronic kidney disease, rheumatic heart disease with infective endocarditis leading to multiple embolic complications. Our case is notable because the patient had evidence of coronary, cerebral, splenic, hepatic and musculoskeletal manifestations due to embolic complications of IE within a duration of one year. Our case was primarily managed by multidiscipliniary approach. It is an impossible task for a cardiologist to treat such cases with showering complications where a multidisciplinary team approach is the only treatment option.
doi:10.3126/njh.v17i2.32682 fatcat:6pqu4nutmndqnd5qgvtq2cuyhe

Organic Cation (DMPI) Intercalated Graphite Anode for High Voltage Next Generation Dual-Ion Battery

Surya Sekhar Manna, Sandeep Das, Arunendu Das, Biswarup Pathak
2021 Materials Advances  
Developing advanced energy storage systems to address the intermittency of renewable energy sources is crucial for meeting the ever-increasing energy demands. Among post lithium-ion battery systems, dual-ion batteries (DIBs) have...
doi:10.1039/d1ma00351h fatcat:buqejch3k5h6rklbwzjynxv6di

global prospective of medical devices and their regulations

Neeshu Tevetia, Shubham Bhatt, Anuj Pathak, Surya Prakash, Abhay Bhardwaj, Mansi Tyagi, Ritu Tomar
2022 International Journal of Health Sciences  
Health of the public is one of the important factors which influence the wellbeing state of a human being. The diagnosis of any chronic disease or disorder & to develop treatment for that particular diseased condition is only possible after the involvement of medical devices & combination products which wasn't possible in previous years. The detailed differentiation of medical devices is based majorly on the risk factor involved from low risk to that of high one. To get the better understanding
more » ... regarding all the medical devices the regulations prevailing to particular device can be studied. The goal of developing medical device regulation systems is to protect public's health while also ensuring their safety & performance. These regulations of medical devices products are governed by FDA which also monitors the safety & efficacy of all medical products. Innovation further leads to manufacture of new medical device. As the pharmaceutical sector & engineering department work hand in hand which has played a vital role in the physiology of organs, better performance, & better life span & in complete replacement of that particular organ system.
doi:10.53730/ijhs.v6ns6.9957 fatcat:akhieyydyrghxdfoxku6g6pzmm


Dushyant Kumar Sharma, Surya Kumar Pathak
2014 Progress In Electromagnetics Research M  
The dispersion characteristics (ω-β diagram) of a left-handed material (LHM) loaded helical guide is analytically solved and numerically computed for different medium properties as well as helical guide parameters. The modal behaviour of this structure has been studied with an aim to achieve ultra slow EM wave over wide bandwidth which finds potential applications in optical switches and memories for optical processing. Significant amount of phase velocity reduction has been achieved in
more » ... on to when helix is in free space or loaded with normal dielectric medium. Other modal properties such as presence of two fundamental modes -backward and forward wave and their lower cut-off frequency (LCF) as well as the bandwidth spectrum is also revealed thoroughly.
doi:10.2528/pierm14010102 fatcat:zharh64xpffrfix3zxsna4viri

Phytochemical Screening, Cytotoxic and Antioxidant Activity of Alternathera sessilis and Moringa oleifera

Ishwor Pathak, Rabin Budhathoki, Nisha Yadav, Muna Niraula, Surya Kant Kalauni
2020 Amrit Research Journal  
Pathak et al., 2020  ...  Pathak et al., 2020 Table 1 . 1 Percentage yield of different extracts Sample taken Percentage yield of different extracts Hexane Methanol Aerial parts of A. sessilis 4.0 6.5 Leaves of M.  ... 
doi:10.3126/arj.v1i1.32456 fatcat:z7rsuwamonav5hjjfswm4j4nhe

Different Crude Extracts of Cinnamomum tamala with Antioxidant and Antibacterial Capabilities

Surya Kant Kalauni, Rasna Maharjan, Ishwor Pathak, Karan Khadayat, Muna Niraula, Prakash Thapa
2021 Amrit Research Journal  
In this present study, crude extracts of young and mature leaves of Cinnamomum tamala were evaluated for their antioxidant and antibacterial capabilities. The cold percolation method was carried out with polar solvents methanol and ethanol. The antioxidant activities of all the extracts were assessed by DPPH assay and antibacterial properties were performed against Staphylococcus aureus, Escherichia coli, Salmonella typhi, and Klebsiella pneumoniae by agar well diffusion method. All extracts
more » ... e able to scavenge free radicals in which strong antioxidant activity was found in methanolic extract of young leaves, and its IC50 value was estimated as (67.19±14.96 μg/mL) at a concentration range of 31.25-500 μg/mL while IC50 value of standard ascorbic acid was found to be 33.53±0.97 μg/mL at the concentration range of 10-50 μg/mL. The ethanolic extract of leaves (ZOI = 19 mm) showed strong antibacterial activity while standard neomycin showed (ZOI = 23 mm) against Escherichia coli at a concentration of 50 μg/mL. These results may provide scientific evidence of the traditional uses of C. tamala. Isolation and characterization of pure active compounds should be done in the future.
doi:10.3126/arj.v2i01.40740 fatcat:wcitzax64bgm7oj33vvt7e7mmi

Investigations of orientation and length scale effects on micromechanical responses in polycrystalline zirconium using spherical nanoindentation

Siddhartha Pathak, Surya R. Kalidindi, Nathan A. Mara
2016 Scripta Materialia  
Here we investigate the elastic and plastic anisotropy of hexagonal materialsas a function of crystal orientation using a high-throughput approach (spherical nanoindentation). Using high purity zirconium as a specific example, we demonstrate the differences in indentation moduli, indentation yield strengths and indentation post-elastic hardening rates over multiple grain orientations. These results are validated against bulk single crystal measurements, as well as data from cubic materials. By
more » ... arying the indenter size (radius), we are also able to demonstrate indentation size effects in © 2015. This manuscript version is made available under the Elsevier user license Scripta Materialia 2 hexagonal materials, including possible signatures of strain hardening due to twin formation in the nanoindentation stress-strain curves. Text: Nanomechanical testing techniques, such as nanoindentation [1-3], micropillar compression and tension [4, 5], as well as three point bend and cantilever bend techniques [6-8], have been used for the past couple of decades to probe small volumes of material of the order of 1 μm 3 or smaller. In techniques other than nanoindentation, preparation of miniaturized tensile and compression samples is typically carried out in bulk materials using Focused Ion Beam (FIB) milling, a time consuming technique that runs the risk of ion beam damage to the sample[9, 10]. Nanoindentation, on the other hand, provides copious amounts of mechanical data from extremely small volumes of material while only requiring a flat polished surface[11] . Much work has also been carried out over the past few years to obtain stress-strain curves using a spherical nanoindentation approach [2, [11] [12] [13] . This technique can transform the raw loaddisplacement data into meaningful indentation stress-strain curves that capture the local loading and unloading elastic moduli, local indentation yield strengths, and post-yield strain hardening behavior.As such, spherical nanoindentation represents a highthroughput technique that can amass enormous amounts of grain-level data from one polycrystalline sample. Early work utilizing this technique focused largely on orientation dependent local (grain-scale) mechanical responses in relatively low anisotropy cubic systems such as
doi:10.1016/j.scriptamat.2015.10.035 fatcat:6de3stdbuffflfx77xidbsqkqu

An atomically precise silver nanocluster for artificial light-harvesting system through supramolecular functionalization

Anish Kumar Das, Sourav Biswas, Surya Sekhar Manna, Biswarup Pathak, Sukhendu Mandal
2022 Chemical Science  
A β-cyclodextrin functionalized atomically precise Ag16 based artificial light-harvesting system is fabricated with 93% energy transfer efficiency from the blue to the green emission region of the acceptor β-carotene molecule.
doi:10.1039/d2sc02786k pmid:35919723 pmcid:PMC9297522 fatcat:kwk3tiyqxvb7fpqvydnim6lhqq
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