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Ganesan Rethinam,Anand Duraiswamy,G. Dayanand Reddy,P. Elankani,Sampath Kundrapakkam Srinivasan 경희대학교 융합한의과학연구소 2022 Oriental Pharmacy and Experimental Medicine Vol.22 No.2
Acute kidney injury (AKI) is described as a disorder with a sudden loss of kidney function. AKI is also attributed to several aetiologies such as diabetes, cardiac problems, etc. Developing a therapy for AKI is challenging due to its complex pathophysiology. The present study investigated the effect of Sphaeranthus amaranthoides Burm f. aqueous extract, a Siddha Kalpha drug, against gentamicin-induced AKI. Animals were initially pre-administered with different concentrations of S. amaranthoides and later induced with gentamicin on the 8th day. Biochemical, anti-inflammatory and antioxidant markers were analysed. Further, HRLCMS analysis was carried out to identify the bioactive components. Components including myo-inositol, traumatic acid, rosmarinic acid, etc. were identified. In the animals induced with gentamicin, KIM1, LDH, GGT, creatinine, BUN and electrolytes were elevated in both serum and urine, while noted within normal range in S. amaranthoides pre-administered groups. Histopathology analysis revealed prevention of necrosis, tubular epithelial cell degeneration and glomerular congestion in S. amaranthoides administered animals. Lipid peroxidation, KIM1, Cystatin C, TNFα, IL6 and NFκB were within normal range in tissues. Thus, it is evident that S. amaranthoides is effective in protecting kidney damage and treating AKI. Further studies will be conducted to analyse the pathways resurrecting kidney damage.
Engineering properties of steel fibre reinforced geopolymer concrete
Ganesan, N.,Indira, P.V.,Santhakumar, Anjana Techno-Press 2013 Advances in concrete construction Vol.1 No.4
Engineering properties such as compressive strength, splitting tensile strength, modulus of rupture, modulus of elasticity and Poisson's ratio of geopolymer concrete (GPC) and steel fibre reinforced geopolymer concrete (SFRGPC) have been obtained from standard tests and compared. A total of 15 specimens were tested for determining each property. The grade of concrete used was M 40. The percentages of steel fibres considered include 0.25%, 0.5%, 0.75% and 1%. In general, the addition of fibres improved the mechanical properties of both GPC and SFRGPC. However the increase was found to be nominal in the case of compressive strength (8.51%), significant in the case of splitting tensile strength (61.63%), modulus of rupture (24%), modulus of elasticity (64.92%) and Poisson's ratio (50%) at 1% volume fraction of fibres. An attempt was made to obtain the relation between the various engineering properties with the percentage of fibres added.
Ganesan, Vinothkumar,Yoon, Sungho American Chemical Society 2019 ACS APPLIED MATERIALS & INTERFACES Vol.11 No.20
<P>Development of an industrially viable catalyst for the ring-expansion carbonylation of epoxides remains challenging in the view of facile product separation and recyclability. Herein, we report a heterogenized porous porphyrin Al(III) tetracarbonylcobaltate bimetallic catalyst for the ring-expansion carbonylation of epoxides. The catalyst was synthesized using a hyper-cross-linking strategy involving methylene bridges introduced by the Friedel-Crafts reaction and incorporated with cobaltate anions. The catalyst effectively converts epoxides into the corresponding β-lactones with an excellent site time yield of 360 h<SUP>-1</SUP>, which is comparable to that of the corresponding homogeneous catalysts and is the highest of any heterogeneous catalyst reported so far for this reaction.</P> [FIG OMISSION]</BR>
Fourier Cosine and Sine Transformable Boehmians
Ganesan, Chinnaraman,Roopkumar, Rajakumar Department of Mathematics 2014 Kyungpook mathematical journal Vol.54 No.1
The range spaces of Fourier cosine and sine transforms on $L^1$([0, ${\infty}$)) are characterized. Using Fourier cosine and sine type convolutions, Fourier cosine and sine transformable Boehmian spaces have been constructed, which properly contain $L^1$([0, ${\infty}$)). The Fourier cosine and sine transforms are extended to these Boehmian spaces consistently and their properties are established.
Ganesan, Vinoth,Ramasamy, Parthiban,Kim, Jinkwon Elsevier 2017 INTERNATIONAL JOURNAL OF HYDROGEN ENERGY - Vol.42 No.9
<P><B>Abstract</B></P> <P>Developing highly efficient and cost-effective electrocatalysts for oxygen evolution reaction (OER) is crucial for renewable energy storage technologies. Here, we synthesized hierarchical Co-based bimetallic sulfide nanostructures as an efficient electrocatalyst for OER. Ni<SUB>3.5</SUB>Co<SUB>5.5</SUB>S<SUB>8</SUB> nanostructures were synthesized by solvothermal sulfurization and thermal annealing of pre-synthesized homogenous bimetallic metal–organic frameworks (MOFs). Electron microscopy studies revealed that the Ni<SUB>3.5</SUB>Co<SUB>5.5</SUB>S<SUB>8</SUB> has hollow nanocage like morphology with thin nanosheets grown on the surface. In addition, Co<SUB>9</SUB>S<SUB>8</SUB> hollow nanocages were also synthesized for comparative electrocatalytic evaluation with the Ni<SUB>3.5</SUB>Co<SUB>5.5</SUB>S<SUB>8</SUB> nanosheet-assembled hollow nanocages (NAHNs). The Ni<SUB>3.5</SUB>Co<SUB>5.5</SUB>S<SUB>8</SUB> NAHNs has exhibited a low overpotential of 333 mV at the current density of 10 mA cm<SUP>−2</SUP> (1.563 V <I>vs</I> RHE) and Tafel slope of 48.5 mV dec<SUP>−1</SUP> for the oxygen evolution reaction in 1 M KOH. Benefitting from their structural merits, Ni<SUB>3.5</SUB>Co<SUB>5.5</SUB>S<SUB>8</SUB> NAHNs manifest excellent OER electrocatalytic activity compared to most of the recently reported non-precious catalyst for OER.</P> <P><B>Highlights</B></P> <P> <UL> <LI> Hierarchical Ni<SUB>3.5</SUB>Co<SUB>5.5</SUB>S<SUB>8</SUB> nanosheet assembled hollow nanocages (NAHNs) were successfully synthesized. </LI> <LI> Ni<SUB>3.5</SUB>Co<SUB>5.5</SUB>S<SUB>8</SUB> NAHNs provide high porous nature and large surface area. </LI> <LI> Explored as efficient, low potential electrocatalyst to drive the oxygen evolution reaction. </LI> <LI> Ni<SUB>3.5</SUB>Co<SUB>5.5</SUB>S<SUB>8</SUB> NAHNs catalyst exhibited better OER stability. </LI> </UL> </P> <P><B>Graphical abstract</B></P> <P>[DISPLAY OMISSION]</P>
Ganesan, P.,Sivanantham, A.,Shanmugam, S. Royal Society of Chemistry 2016 Journal of materials chemistry. A, Materials for e Vol.4 No.42
<P>Efficient and durable electrocatalysts for water splitting (both the oxygen evolution reaction (OER) and hydrogen evolution reaction (HER)) are required for the replacement of expensive noble metal-based catalysts used in water electrolysis devices. Herein, we describe the inexpensive synthesis of electrochemically deposited nickel iron sulphides on nickel foam (NiFeS/NF) and their use as highly efficient bi-functional water splitting catalysts that can meet the current energy demands. The NiFeS/NF electrocatalysts exhibited low overpotentials of approximately 231 mV for the OER and 180 mV for the HER in 1 M KOH. Moreover, the NiFeS/NF electrocatalysts exhibited a turnover frequency of one order of magnitude higher than those of state-of-the-art noble metal catalysts (RuO2 and Pt/C) for the OER and HER. In addition to this excellent activity, the bi-functional catalyst also exhibited an outstanding OER and HER electrode stability for over 200 h with minimal loss in activity. Further, it can be directly used in the practical application of alkaline electrolyte membrane water electrolysis. The high performance, prolonged electrode stability, and facile synthesis as an adherent coating on nickel foam suggest that NiFeS/NF electrocatalysts might be suitable for use as alternative commercially viable catalysts.</P>
A FORMAL ASPECT OF THE PROCESS OF PRODUCTION AND COMPREHENSION OF A DISCOURSE
Ganesan, N. 서울대학교 어학연구소 1986 語學硏究 Vol.22 No.4
During the moment of production of a discourse 'D', there are creation of classes of notions and evaluations of certain relations between those classes. Neither thoses classes nor those relations which bind them are permanent. They result from the conditions of the production of a discourse 'D'. Most of the contemporary language researchers share one common factor : "the conditions of production have an influence upon the selection of the combination of terms and the form of 'D' itself ; but the formal criteria to lay down a general Condition which could be applicable in all situations are not formally discussed in most of the systems, particularly, in those that we have evoked below. In this paper we have tried to analyse and extract some formal properties to represent thase conditions which constitute the process of production and comprehension of a discourse 'D', on the lights of enunciativo-predicative approach. We have focused mainly on how the two poles "I"(¢_0) and "you"(¢_1) are coprojected to constitute the enunciative process. The selection and combination of terms are carried, not by ¢_0 alone like in most of the formal systems (cf. Fillmore, Rouault, Descles but by the couple (¢_0,¢_1). To encounter the virtual participation of "you"(¢_1) in the process of production charged initially by "I"(¢_0) we have introduced a notion : "coprocess". The participants of the act are not keeping the same identity and referential coordinates in the course of the process. It is subject to change. This theoretical precaution will allow us to configurate better the problems of pragmactic level and to control at evety instant state whether t_1∈V(τ_0) and its adjacents t_(1-1)∈V(τ_0) and t_(1+1)∈V(τ_0) have the same coordinates or not ; and afterwards the same referential values.