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Endovascular Therapy for Ischemic Stroke
Ramana M R Appireddy,Andrew M Demchuk,Mayank Goyal,Bijoy K Menon,Muneer Eesa,Philip Choi,Michael D. Hill 대한신경과학회 2015 Journal of Clinical Neurology Vol.11 No.1
The utility of intravenous tissue plasminogen activator (IV t-PA) in improving the clinical outcomes after acute ischemic stroke has been well demonstrated in past clinical trials. Thoughmultiple initial small series of endovascular stroke therapy had shown good outcomes as compared to IV t-PA, a similar beneficial effect had not been translated in multiple randomizedclinical trials of endovascular stroke therapy. Over the same time, there have been parallel advances in imaging technology and better understanding and utility of the imaging in therapy ofacute stroke. In this review, we will discuss the evolution of endovascular stroke therapy followed by a discussion of the key factors that have to be considered during endovascular stroketherapy and directions for future endovascular stroke trials.
Mustakim M Mansuri,Ramesh K Goya,Bhoomika R Goyal,Umesh M Upadhyay,Jayesh Sheth 경희대학교 융합한의과학연구소 2009 Oriental Pharmacy and Experimental Medicine Vol.9 No.1
We have evaluated the effect of long term treatment of Enicostemma littorale (E. littorale) in type 2 diabetic patients taking pills of aqueous extract of E. littorale regularly as a complimentary medicine for at least 9 months. The effects of E. littorale on glycemic control, lipid profile, cardiac function and DNA damage in these patients were compared with those who had not been regular in taking E. littorale but regular in taking other conventional anti-diabetics. Our data suggest that, E. littorale can maintain normal blood glucose, serum insulin, serum triglycerides levels of type 2 diabetic patients if taken regularly. E. littorale also improves insulin sensitivity, and normalize disturbed lipogram and elevated creatinine levels, thereby produces beneficial effect in preventing cardiovascular complications and may preserve the kidney function. The finding that E. littorale also prevents DNA damage suggest a long term effect in diabetic patients. E. littorale thus can be considered as safe supplementary therapy for a long term and effective management of type 2 diabetic patients. We have evaluated the effect of long term treatment of Enicostemma littorale (E. littorale) in type 2 diabetic patients taking pills of aqueous extract of E. littorale regularly as a complimentary medicine for at least 9 months. The effects of E. littorale on glycemic control, lipid profile, cardiac function and DNA damage in these patients were compared with those who had not been regular in taking E. littorale but regular in taking other conventional anti-diabetics. Our data suggest that, E. littorale can maintain normal blood glucose, serum insulin, serum triglycerides levels of type 2 diabetic patients if taken regularly. E. littorale also improves insulin sensitivity, and normalize disturbed lipogram and elevated creatinine levels, thereby produces beneficial effect in preventing cardiovascular complications and may preserve the kidney function. The finding that E. littorale also prevents DNA damage suggest a long term effect in diabetic patients. E. littorale thus can be considered as safe supplementary therapy for a long term and effective management of type 2 diabetic patients.
Mansuri, Mustakim M,Goyal, Bhoomika R,Upadhyay, Umesh M,Sheth, Jayesh,Goyal, Ramesh K Kyung Hee Oriental Medicine Research Center 2009 Oriental pharmacy and experimental medicine Vol.9 No.1
We have evaluated the effect of long term treatment of Enicostemma littorale (E. littorale) in type 2 diabetic patients taking pills of aqueous extract of E. littorale regularly as a complimentary medicine for at least 9 months. The effects of E. littorale on glycemic control, lipid profile, cardiac function and DNA damage in these patients were compared with those who had not been regular in taking E. littorale but regular in taking other conventional anti-diabetics. Our data suggest that, E. littorale can maintain normal blood glucose, serum insulin, serum triglycerides levels of type 2 diabetic patients if taken regularly. E. littorale also improves insulin sensitivity, and normalize disturbed lipogram and elevated creatinine levels, thereby produces beneficial effect in preventing cardiovascular complications and may preserve the kidney function. The finding that E. littorale also prevents DNA damage suggest a long term effect in diabetic patients. E. littorale thus can be considered as safe supplementary therapy for a long term and effective management of type 2 diabetic patients.
Improvement of Corrosion Resistance of Aluminum Alloy with Wettability Controlled Porous Oxide films
( M. Sakairi ),( V. Goyal ) 한국부식방식학회 2016 Corrosion Science and Technology Vol.15 No.4
The combined process of porous type anodizing and desiccation treatment was applied to improve wettability of A1050 aluminum alloy. The water contact angles of anodized samples were increaseds considerably with desiccation treatment. However, there was no considerable effect of polishing and anodizing time on water contact angle. The corrosion behavior with the treatments was investigated electrochemically. The corrosion resistance of the samples in 3.5 mass% NaCl solutions increased with higher contact angle. Anodized and desiccated samples showed better corrosion resistance than un-desiccated samples around rest potential region.
Eswaran, M.,Goyal, P.,Reddy, G.R.,Singh, R.K.,Vaze, K.K. Techno-Press 2013 Ocean systems engineering Vol.3 No.3
The main objective of this work is to investigate the sloshing behavior in a baffled and unbaffled three dimensional annular-sectored water pool (i.e., tank) which is located at dome region of the primary containment. Initially two case studies were performed for validation. In these case studies, the theoretical and experimental results were compared with numerical results and good agreement was found. After the validation of present numerical procedure, an annular-sectored water pool has been taken for numerical investigation. One sector is taken for analysis from the eight sectored water pool. The free surface is captured by Volume of Fluid (VOF) technique and the fluid portion is solved by finite volume method while the structure portions are solved by finite element approach. Baffled and un-baffled cases were compared to show the reduction in wave height under excitation. The complex mechanical interaction between the fluid and pool wall deformation is simulated using a partitioned strong fluid-structure coupling.
Measurements on a Model Francis Turbine during Start-Stop
Rahul Goyal,B K Gandhi,M J Cervantes 한국유체기계학회 2019 International journal of fluid machinery and syste Vol.12 No.3
Increased penetration of intermittent energy resources disturbs the power grid network. The frequency band of the power grid is normally controlled by automatic opening and closing of the guide vanes of hydraulic turbines. This has increased the number of startup and shutdown cycles as compared to the defined ones for the normal operation of turbines. Turbine startup and shutdown induced a higher level of pressure fluctuations and unsteadiness in the flow field, decreasing its expected life. This paper presents the pressure and velocity measurements performed on a Francis turbine model during startup and shutdown. The pressure measurements were performed in the vaneless space and draft tube and two-dimensional particle image velocimetry measurements in the cone. The turbine operations from a standstill (no flow) and high load were considered to perform the startup and shutdown, respectively. The frequency of rotor-stator interactions and standing waves were well captured in the spectrograms of pressure signals. The signature of rotating vortex rope frequency was also observed in the spectrograms. A huge disturbance in the draft tube flow was observed due to these transient operations. The flow at the center was mainly dominated by the stagnant, separation and recirculating regions.
Nanoparticle mechanics: deformation detection via nanopore resistive pulse sensing
Darvish, A.,Goyal, G.,Aneja, R.,Sundaram, R. K.,Lee, K.,Ahn, C.,Kim, K. B.,Vlahovska, P.,Kim, M. Royal Society of Chemistry 2016 Nanoscale Vol.8 No.30
<P>Solid-state nanopores have been widely used in the past for single-particle analysis of nanoparticles, liposomes, exosomes and viruses. The shape of soft particles, particularly liposomes with a bilayer membrane, can greatly differ inside the nanopore compared to bulk solution as the electric field inside the nanopores can cause liposome electrodeformation. Such deformations can compromise size measurement and characterization of particles, but are often neglected in nanopore resistive pulse sensing. In this paper, we investigated the deformation of various liposomes inside nanopores. We observed a significant difference in resistive pulse characteristics between soft liposomes and rigid polystyrene nanoparticles especially at higher applied voltages. We used theoretical simulations to demonstrate that the difference can be explained by shape deformation of liposomes as they translocate through the nanopores. Comparing our results with the findings from electrodeformation experiments, we demonstrated that the rigidity of liposomes can be qualitatively compared using resistive pulse characteristics. This application of nanopores can provide new opportunities to study the mechanics at the nanoscale, to investigate properties of great value in fundamental biophysics and cellular mechanobiology, such as virus deformability and fusogenicity, and in applied sciences for designing novel drug/gene delivery systems.</P>
Rawat U.,Singh M. K.,Goyal M. 한국물리학회 2023 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.83 No.6
In the interactions of 84Kr with emulsion at 1 A GeV, the forward and backward emission of relativistic and fast hadrons was experimentally investigated. We focused on how the target fragment infuences the average multiplicities of shower particles discharged in both the forward and backward hemispheres, as well as on one another, in the current research. We have also investigated how the correlation strength varies with projectile mass. The research backs up the fnding that the creation of particles in the backward hemisphere is caused by a collective mechanism and is found to be compatible. The results are contrasted with the measurements from other tests and found to be consistent.