... Titre du document / Document title. Watersheds prioritisation using remote sensing techniques... more ... Titre du document / Document title. Watersheds prioritisation using remote sensing techniques : a case study of the Mahbubnagar district, Andhra Pradesh, India. Auteur(s) / Author(s). PRASAD KSS ; GOPI S. ; RAO RS ; Affiliation(s) du ou des auteurs / Author(s) Affiliation(s). ...
Energy is the Prime mover of economic growth and is vital to the sustenance of a modern economy. ... more Energy is the Prime mover of economic growth and is vital to the sustenance of a modern economy. Energy efficiency has assumed a critical role in our pursuit of sustainable development. Study carried out by various organizations reveal that Indian Industry has the potential to save 20 to 30 percent of total energy consumption. Towards exploiting the opportunities for enhancing energy efficiency in an industry, the work is formulated in the Kayaar Mill located in Kovilpatti. Since the Industrial Revolution in India, the Power factor plays a prime role in which maintaining of unity Power Factor is a challenging one. Moreover they maintain the P.F in the Power house for the benefit of utility or at the Transformer LV Side. It only avoids the Maximum demand and in some cases not avoiding the Maximum Demand but losses at the load end point are not eliminated and their machineries are fetching more Current and KVA leads to lower life cycle and higher energy consumption. By eliminating the...
Blends of polycaprolactone (PCL) and poly(3-hydroxyoctanoate) P(3HO) were prepared by melt compou... more Blends of polycaprolactone (PCL) and poly(3-hydroxyoctanoate) P(3HO) were prepared by melt compounding. These immiscible blends exhibited droplet-matrix morphology at compositions up to 30 wt% P(3HO). Even though the addition of amorphous P(3HO) decreased the crystallinity of PCL, the crystallization temperature of the blends increased by 6 to 7 8C. Blends containing up to 30 wt% P(3HO) had higher crystallization rates, and lower crystallization half-times compared to neat PCL. The viscosity of PCL decreased upon addition of P(3HO), making the blends suitable for processing using a 3D bioplotter. Compositions with 10 to 30 wt% P(3HO) were ideal for processing, because of their improved crystallization kinetics, reduced stickiness and good flow properties. Estimation of the interfacial tension by fitting the Palierne model to the linear viscoelastic properties of the blends revealed good compatibility, which gave rise to synergistic effects in the thermal and mechanical properties. The fibres prepared by 3D bioplotting maintained droplet matrix morphology, with finer particle size than the original compounded material. In addition to favourable viscosity and thermal properties, the extruded fibres containing 30 wt% P(3HO) had comparable modulus to the neat PCL, while exhibiting good ductility. These blends may be suitable alternatives to PCL for biomedical applications, because they provide a range of crystallinities, crystallization rates and viscosities.
We prove a new upper bound on the number of $r$-rich lines (lines with at least $r$ points) in a ... more We prove a new upper bound on the number of $r$-rich lines (lines with at least $r$ points) in a `truly' $d$-dimensional configuration of points $v_1,\ldots,v_n \in \mathbb{C}^d$. More formally, we show that, if the number of $r$-rich lines is significantly larger than $n^2/r^d$ then there must exist a large subset of the points contained in a hyperplane. We conjecture that the factor $r^d$ can be replaced with a tight $r^{d+1}$. If true, this would generalize the classic Szemer\'edi-Trotter theorem which gives a bound of $n^2/r^3$ on the number of $r$-rich lines in a planar configuration. This conjecture was shown to hold in $\mathbb{R}^3$ in the seminal work of Guth and Katz \cite{GK10} and was also recently proved over $\mathbb{R}^4$ (under some additional restrictions) \cite{SS14}. For the special case of arithmetic progressions ($r$ collinear points that are evenly distanced) we give a bound that is tight up to low order terms, showing that a $d$-dimensional grid achiev...
4- Nitrophenol (4-NP) is a top rated hazardous environmental pollutant and secondary explosive ch... more 4- Nitrophenol (4-NP) is a top rated hazardous environmental pollutant and secondary explosive chemicals. For the sake of ecology and environment safety, the catalytic reduction and detection of 4-NP is highly important. In this work, ɤ-Fe2O3-nitrogen doped rGO (ɤ-Fe2O3-N-rGO) nanohydrogel was synthesized by green hydrothermal method. The morphology and phase purity of prepared ɤ-Fe2O3-N-rGO nanohydrogel were confirmed by various analytical (SEM, TEM, XRD, and XPS) and electrochemical techniques. The morphological structure of ɤ-Fe2O3-N-rGO nanohydrogel confirmed that the nanocrystals are well covered over the 2D N-rGO layer. Further, ɤ-Fe2O3-N-rGO nanohydrogel was applied for the catalytic reduction and electrochemical detection of ecotoxic 4-NP. A low cost, ɤ-Fe2O3-N-rGO nanohydrogel displayed an excellent catalytic activity, high recyclability (>5 cycles) and high conversion efficiency of 4-NP to 4-Aminophenol (4-AP). In addition, ɤ-Fe2O3-N-rGO nanohydrogel modified GCE displayed a wide linear sensing range (0.1-1000 μM), and a low detection limit (LOD) of 0.1 μM with excellent sensitivity, high selectivity (<1.2%) and good stability (>4 weeks). The developed sensor electrode shows the low reduction potential of -0.3 V and -0.60 V for the determination of 4-NP. The proposed ɤ-Fe2O3-N-rGO nanohydrogel is promising catalyst for the detection and removal of toxic aromatic nitro compounds in real site applications.
IEEE GLOBECOM 2008 - 2008 IEEE Global Telecommunications Conference, 2008
AbstractFinding an optimal routing path in adverse under-water environment in an Underwater Sens... more AbstractFinding an optimal routing path in adverse under-water environment in an Underwater Sensor Network (UWSN) has always been a challenging task. Maintaining the network life for a longer duration by utilizing nodes&amp;#x27; energy is also critical. By taking these issues into ...
... Titre du document / Document title. Watersheds prioritisation using remote sensing techniques... more ... Titre du document / Document title. Watersheds prioritisation using remote sensing techniques : a case study of the Mahbubnagar district, Andhra Pradesh, India. Auteur(s) / Author(s). PRASAD KSS ; GOPI S. ; RAO RS ; Affiliation(s) du ou des auteurs / Author(s) Affiliation(s). ...
Energy is the Prime mover of economic growth and is vital to the sustenance of a modern economy. ... more Energy is the Prime mover of economic growth and is vital to the sustenance of a modern economy. Energy efficiency has assumed a critical role in our pursuit of sustainable development. Study carried out by various organizations reveal that Indian Industry has the potential to save 20 to 30 percent of total energy consumption. Towards exploiting the opportunities for enhancing energy efficiency in an industry, the work is formulated in the Kayaar Mill located in Kovilpatti. Since the Industrial Revolution in India, the Power factor plays a prime role in which maintaining of unity Power Factor is a challenging one. Moreover they maintain the P.F in the Power house for the benefit of utility or at the Transformer LV Side. It only avoids the Maximum demand and in some cases not avoiding the Maximum Demand but losses at the load end point are not eliminated and their machineries are fetching more Current and KVA leads to lower life cycle and higher energy consumption. By eliminating the...
Blends of polycaprolactone (PCL) and poly(3-hydroxyoctanoate) P(3HO) were prepared by melt compou... more Blends of polycaprolactone (PCL) and poly(3-hydroxyoctanoate) P(3HO) were prepared by melt compounding. These immiscible blends exhibited droplet-matrix morphology at compositions up to 30 wt% P(3HO). Even though the addition of amorphous P(3HO) decreased the crystallinity of PCL, the crystallization temperature of the blends increased by 6 to 7 8C. Blends containing up to 30 wt% P(3HO) had higher crystallization rates, and lower crystallization half-times compared to neat PCL. The viscosity of PCL decreased upon addition of P(3HO), making the blends suitable for processing using a 3D bioplotter. Compositions with 10 to 30 wt% P(3HO) were ideal for processing, because of their improved crystallization kinetics, reduced stickiness and good flow properties. Estimation of the interfacial tension by fitting the Palierne model to the linear viscoelastic properties of the blends revealed good compatibility, which gave rise to synergistic effects in the thermal and mechanical properties. The fibres prepared by 3D bioplotting maintained droplet matrix morphology, with finer particle size than the original compounded material. In addition to favourable viscosity and thermal properties, the extruded fibres containing 30 wt% P(3HO) had comparable modulus to the neat PCL, while exhibiting good ductility. These blends may be suitable alternatives to PCL for biomedical applications, because they provide a range of crystallinities, crystallization rates and viscosities.
We prove a new upper bound on the number of $r$-rich lines (lines with at least $r$ points) in a ... more We prove a new upper bound on the number of $r$-rich lines (lines with at least $r$ points) in a `truly' $d$-dimensional configuration of points $v_1,\ldots,v_n \in \mathbb{C}^d$. More formally, we show that, if the number of $r$-rich lines is significantly larger than $n^2/r^d$ then there must exist a large subset of the points contained in a hyperplane. We conjecture that the factor $r^d$ can be replaced with a tight $r^{d+1}$. If true, this would generalize the classic Szemer\'edi-Trotter theorem which gives a bound of $n^2/r^3$ on the number of $r$-rich lines in a planar configuration. This conjecture was shown to hold in $\mathbb{R}^3$ in the seminal work of Guth and Katz \cite{GK10} and was also recently proved over $\mathbb{R}^4$ (under some additional restrictions) \cite{SS14}. For the special case of arithmetic progressions ($r$ collinear points that are evenly distanced) we give a bound that is tight up to low order terms, showing that a $d$-dimensional grid achiev...
4- Nitrophenol (4-NP) is a top rated hazardous environmental pollutant and secondary explosive ch... more 4- Nitrophenol (4-NP) is a top rated hazardous environmental pollutant and secondary explosive chemicals. For the sake of ecology and environment safety, the catalytic reduction and detection of 4-NP is highly important. In this work, ɤ-Fe2O3-nitrogen doped rGO (ɤ-Fe2O3-N-rGO) nanohydrogel was synthesized by green hydrothermal method. The morphology and phase purity of prepared ɤ-Fe2O3-N-rGO nanohydrogel were confirmed by various analytical (SEM, TEM, XRD, and XPS) and electrochemical techniques. The morphological structure of ɤ-Fe2O3-N-rGO nanohydrogel confirmed that the nanocrystals are well covered over the 2D N-rGO layer. Further, ɤ-Fe2O3-N-rGO nanohydrogel was applied for the catalytic reduction and electrochemical detection of ecotoxic 4-NP. A low cost, ɤ-Fe2O3-N-rGO nanohydrogel displayed an excellent catalytic activity, high recyclability (>5 cycles) and high conversion efficiency of 4-NP to 4-Aminophenol (4-AP). In addition, ɤ-Fe2O3-N-rGO nanohydrogel modified GCE displayed a wide linear sensing range (0.1-1000 μM), and a low detection limit (LOD) of 0.1 μM with excellent sensitivity, high selectivity (<1.2%) and good stability (>4 weeks). The developed sensor electrode shows the low reduction potential of -0.3 V and -0.60 V for the determination of 4-NP. The proposed ɤ-Fe2O3-N-rGO nanohydrogel is promising catalyst for the detection and removal of toxic aromatic nitro compounds in real site applications.
IEEE GLOBECOM 2008 - 2008 IEEE Global Telecommunications Conference, 2008
AbstractFinding an optimal routing path in adverse under-water environment in an Underwater Sens... more AbstractFinding an optimal routing path in adverse under-water environment in an Underwater Sensor Network (UWSN) has always been a challenging task. Maintaining the network life for a longer duration by utilizing nodes&amp;#x27; energy is also critical. By taking these issues into ...
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