We present fluid dynamics videos illustrating wetting splashing-produced by water drop impact ont... more We present fluid dynamics videos illustrating wetting splashing-produced by water drop impact onto hydrophobic microstructures at high impact velocity ($\sim 3$ ms$^{-1}$). The substrate consists of regular and transparent microtextures in square or hexagonal lattice, yielding a high contact angle of $\sim 150 ^\circ$. Our high speed top-or-bottom view recordings through the transparent surface shed light on the solid-liquid-air interfaces at impact. Despite the superhydrophobicity of the latticed micropillars (of a periodicity of $10 {\mu}m), water droplet wets a certain central area and moreover entraps an air bubble beneath the droplet. Besides the central wet area, lamella surf on air splashing outward at high impinging velocity. The effects of micropatterns and air pressure on the impact outcome are also examined. We show that microscopic boundary condition, imposed by the solid texture, profoundly influences the macroscopic flow dynamics upon superhydrophobic surfaces at high impinging velocity. In addition, the intervening air between the liquid and the solid plays a crucial role in directional splash, which can be eliminated by a reduced air pressure.
Abstract This chapter summarizes the main findings and evidences exposed throughout the book, exp... more Abstract This chapter summarizes the main findings and evidences exposed throughout the book, explores their implications and provides recommendations for research, management and policy. The rising number of stressors affecting river ecosystems, their increasing geographic extent, and their important consequences for both nature and society, makes it essential to adapt current river monitoring schemes and to create a data repository to account for the evidences existing from many different sources. It is also necessary to consider scale dependencies in multiple stressor occurrences, as well as to undertake a more active scientific and social communication of risks associated thereto.
Irregular hydrology and human influences are common features in the Mediterranean river systems i... more Irregular hydrology and human influences are common features in the Mediterranean river systems in Spain. The two affect both the water characteristics and the distributional patterns of the organisms. Current research on functional aspects of undisturbed tributaries is ultimately directed to give light to the behaviour of Mediterranean rivers. Analysis of nutrient dynamics and epilithon metabolism is being performed in two low-order tributaries under different environmental conditions (essentially light and substrata). Results are discussed with respect to the special character of the Mediterranean rivers.
Advances in Asian Human-Environmental Research, 2017
Policies and governance of sustainability and adaptation in the Indian Sundarbans are deeply entr... more Policies and governance of sustainability and adaptation in the Indian Sundarbans are deeply entrenched in the discursive conflicts between various narratives emanating from global, national and local actors, respectively. The local residents perceive everyday disasters and erosion as their biggest threats followed by salinisation of soil. While forced outmigration is often the only autonomous adaptation option, scouts of human trafficking and child labour exploit the vulnerability of the disaster-fatigued. The state claims embankments to be the only instrument of protection and governance, which also designate their authority over the region. Multiple agencies with their respective mandates of control over the region and the resulting power struggles create deep divisions in the sustainability and adaptation governance. For example, approaches based on co-benefits and benefit sharing, have failed to cater to the local needs. Experts – comprising ecologists and geomorphologists – construct the region differently. The former focuses on the values of the ecosystem without being able to devise a system of sharing the benefits with the local people. The latter describes the region as an unstable, immature and active delta unfit for human habitation. Economists calculate values of the ecosystem services and products offered by the Sundarbans but fail to deliberate upon or devise a mechanism of sharing these benefits. Conservationists feel that the fragile balance of life-forms and biodiversity in the Sundarbans are critically endangered, which might eventually jeopardise human existence itself. The discourse of both the expert and the policy actors shifts the burden and onus of adaptation to the self-organising capacities of the local residents. While rehabilitation, livelihood security, built and human capital remain absent, the locals are not only expected to cope with hazards autonomously but also relinquish their living spaces to avoid future disasters. These multiple perceived realities make sustainability and climate governance in the Sundarbans a staggering intellectual and policy challenge.
研究严格双对角占优矩阵A在一定条件下，v下界的一种新估计．对满足n≥k≥i≥1的任意k，i，有｜akk｜-Rk≤laii｜—Ri，进而得到新的下界mini≠j｜｜ajj｜＋Ri（A）/｜aii×... more 研究严格双对角占优矩阵A在一定条件下，v下界的一种新估计．对满足n≥k≥i≥1的任意k，i，有｜akk｜-Rk≤laii｜—Ri，进而得到新的下界mini≠j｜｜ajj｜＋Ri（A）/｜aii×ajj｜-Ri（A）×Rj（A）}.并且证明这种新的估计要比已存在的下界更精确．最后用数值例子说明了这个结论的有效性．
Els sistemes aquatics continentals inclouen rius, estanys (o llacs), llacunes (o estanyols) i emb... more Els sistemes aquatics continentals inclouen rius, estanys (o llacs), llacunes (o estanyols) i embassaments com a masses d’aigua superficials. Aquests sistemes recullen tant les influencies climatiques com les que son fruit de l’activitat humana que es desenvolupa a la conca, de les quals les dinamiques hidrologica, sedimentaria, biogeoquimica i biologica son receptores directes. El canvi climatic afecta la quantitat i la frequencia de les pluges i l’evapotranspiracio que s’efectua a la conca, amb efectes directes en la magnitud i la frequencia dels patrons hidrologics. S’estima que el canvi climatic pot ser el detonant de l’augment de la frequencia d’esdeveniments extrems i transitoris (com ara les sequeres i les avingudes) a les regions amb clima mediterrani, i de l’augment de la raresa de les condicions hidrologiques basals: els sistemes funcionaran cada vegada mes en regim episodic, mentre que els canvis progressius i estacionals seran mes difusos. L’increment anomal de la temper...
The Journal of the Association of Physicians of India, 2020
Current medical care is heavily reliant on the use of evidence-based guidelines dealing with diag... more Current medical care is heavily reliant on the use of evidence-based guidelines dealing with diagnosis and therapy. The burgeoning medical literature, easy availability of medical information in the social media and consumerism has increased the additional number of issues discussed during a patient physician meeting. Inability to satisfy the patient or their families due to poor communication skills of physicians remains an universal challenge all over the world. Poor patient physician communication decrease patient compliance to treatment strategies, poor patient satisfaction scores and on the extreme lead to violence directed to physicians. Most medical schools and residency programs have incorporated patient-physician's communication skills in their curriculum. Similar opportunities to improve communication skills are available for practicing physicians. There are numerous tools that can be readily incorporated to improve the quality of patient physician communication. Commu...
Rivers suffer from more severe decreases in species diversity compared to other aquatic and terre... more Rivers suffer from more severe decreases in species diversity compared to other aquatic and terrestrial ecosystems due to a variety of pressures related to human activities. Species provide different roles in the functioning of the ecosystem, and their loss may reduce the capacity of the ecosystems to respond to multiple stressors. The effects on diversity will differ based on the type, combination and severity of stressors, as well as on the characteristics of the community composition and tolerance. Multiple trait-based approaches (MTBAs) can help to unravel the effects of multiple stressors on communities, providing a mechanistic interpretation, and, thus, complementing traditional biodiversity assessments using community structure. We studied the relationships between diversity indexes and trait composition of macroinvertebrate and diatom communities, as well as environmental variables that described the hydrological and geomorphological alterations and toxic pollution (pesticides and pharmaceuticals) of three different European river basins: the Adige, the Sava, and the Evrotas. These river basins can be considered representative cases of different situations in European freshwater systems. Hydrological variables were the main drivers determining the community structure and function in the rivers, for both diatoms and macroinvertebrates. For diatom communities, pharmaceutical active compound (PhAC) toxic units were also identified as a very important driver of diversity changes, explaining up to 57% of the variance in taxonomic richness. For macroinvertebrates, river geomorphology was an important driver of structural changes, particularly affecting Plecoptera richness. In addition, PhAC and pesticide toxic units were also identified as stressors for macroinvertebrate communities. MTBA provided a detailed picture of the effects of the stressors on the communities and confirmed the importance of hydrological variables in shaping the functional attributes of the communities.
The discursive conflicts over policies and governance of the Indian Sundarbans are staged in the ... more The discursive conflicts over policies and governance of the Indian Sundarbans are staged in the media which constitute the public sphere. Clear winners seem to emerge from such contestations despite the linguistic, sociocultural differences that characterise audiences of different newspapers. Instead of promoting plurality and deliberate upon diverse points-of-view, arguments and solutions about possible development pathways for the region, the media discourse on the Sundarbans is increasingly becoming polarised and homogenous. There is a clear discursive shift even in the vernacular or local languages which increasingly speak of and reiterate the global and elite agenda of conservation and embankment instead of locally nuanced socioecological agendas, dominant earlier in the local language newspapers. The discursive convergence between the coverage of English and that of the Bengali newspapers indicates a global architecture of biopower and hegemony pervading the media of the mass...
A mathematical Model is presented here which describes the growth of tumor cells with one term de... more A mathematical Model is presented here which describes the growth of tumor cells with one term delay and it's intrinsic behaviour in the presence of immune cell. Here in this model we have also considered the effect of drug administered and assumed that drug kills both immune and tumor cells. The stability of immune cells and tumor cells with the effect of drug and delay is analyzed under equilibrium conditions. AMS Subject Classification: 92B05, 90-08, 65L07, 65L06
The Indian Sundarbans is one of the most backward regions in South Asia despite being a critical ... more The Indian Sundarbans is one of the most backward regions in South Asia despite being a critical global commons because of its unique biodiversity including the endangered Royal Bengal Tiger. Characterised by subsistence economy, the region records very high level of poverty. Local livelihoods largely depend on natural resources which are either dwindling fast (fish) or becoming unproductive (increasing salination making agriculture increasingly difficult). While there is a clear aspirational shift towards more formal livelihoods such as white-collar professions, the daily unproductive livelihood negotiations are becoming serious threats to long-term sustenance and sustainability of the socioecological system. The built capital or the infrastructure is poorly developed which make it difficult for the locals to realise the true productive capacity of the region. This also fails to bolster human capital that can enable informed choices about the household-level aspirational trajectori...
Humanities and Social Sciences Communications, 2021
Through a Foucauldian reading of Bama’s Sangati (2005) and P. Sivakami’s The Grip of Change (2006... more Through a Foucauldian reading of Bama’s Sangati (2005) and P. Sivakami’s The Grip of Change (2006a, 2006b), this paper attempts to delineate the permeation and maintenance of disciplinary power in the social structure and assertion of patriarchal politics in the subjugation of Dalit female bodies. The detrimental politics of patriarchal discourse, the paper argues, degrades the existence of Dalit women, and excludes them from the equation of power relations by delimiting their access to society’s productive resources and restricting their sexuality. Disciplinary power, which acts as a patriarchal tool, prescribes acceptable gestures and required behaviour, and through constant surveillance normalizes a dominant male order. It reduces Dalit women’s existence into an amorphous property, readily mutilated and moulded under the whims of a phallocentric order. Discursive practices further constitute practices of body politics, making the female body an object of active site of political ...
... Disclaimer/Klachtenregeling Meent u dat de digitale beschikbaarstelling van bepaald materiaal... more ... Disclaimer/Klachtenregeling Meent u dat de digitale beschikbaarstelling van bepaald materiaal inbreuk maakt op enig recht dat u toekomt of uw (privacy)belangen schaadt, dan kunt u dit onderbouwd aan de Universiteitsbibliotheek laten weten. ...
We present fluid dynamics videos illustrating wetting splashing-produced by water drop impact ont... more We present fluid dynamics videos illustrating wetting splashing-produced by water drop impact onto hydrophobic microstructures at high impact velocity ($\sim 3$ ms$^{-1}$). The substrate consists of regular and transparent microtextures in square or hexagonal lattice, yielding a high contact angle of $\sim 150 ^\circ$. Our high speed top-or-bottom view recordings through the transparent surface shed light on the solid-liquid-air interfaces at impact. Despite the superhydrophobicity of the latticed micropillars (of a periodicity of $10 {\mu}m), water droplet wets a certain central area and moreover entraps an air bubble beneath the droplet. Besides the central wet area, lamella surf on air splashing outward at high impinging velocity. The effects of micropatterns and air pressure on the impact outcome are also examined. We show that microscopic boundary condition, imposed by the solid texture, profoundly influences the macroscopic flow dynamics upon superhydrophobic surfaces at high impinging velocity. In addition, the intervening air between the liquid and the solid plays a crucial role in directional splash, which can be eliminated by a reduced air pressure.
Abstract This chapter summarizes the main findings and evidences exposed throughout the book, exp... more Abstract This chapter summarizes the main findings and evidences exposed throughout the book, explores their implications and provides recommendations for research, management and policy. The rising number of stressors affecting river ecosystems, their increasing geographic extent, and their important consequences for both nature and society, makes it essential to adapt current river monitoring schemes and to create a data repository to account for the evidences existing from many different sources. It is also necessary to consider scale dependencies in multiple stressor occurrences, as well as to undertake a more active scientific and social communication of risks associated thereto.
Irregular hydrology and human influences are common features in the Mediterranean river systems i... more Irregular hydrology and human influences are common features in the Mediterranean river systems in Spain. The two affect both the water characteristics and the distributional patterns of the organisms. Current research on functional aspects of undisturbed tributaries is ultimately directed to give light to the behaviour of Mediterranean rivers. Analysis of nutrient dynamics and epilithon metabolism is being performed in two low-order tributaries under different environmental conditions (essentially light and substrata). Results are discussed with respect to the special character of the Mediterranean rivers.
Advances in Asian Human-Environmental Research, 2017
Policies and governance of sustainability and adaptation in the Indian Sundarbans are deeply entr... more Policies and governance of sustainability and adaptation in the Indian Sundarbans are deeply entrenched in the discursive conflicts between various narratives emanating from global, national and local actors, respectively. The local residents perceive everyday disasters and erosion as their biggest threats followed by salinisation of soil. While forced outmigration is often the only autonomous adaptation option, scouts of human trafficking and child labour exploit the vulnerability of the disaster-fatigued. The state claims embankments to be the only instrument of protection and governance, which also designate their authority over the region. Multiple agencies with their respective mandates of control over the region and the resulting power struggles create deep divisions in the sustainability and adaptation governance. For example, approaches based on co-benefits and benefit sharing, have failed to cater to the local needs. Experts – comprising ecologists and geomorphologists – construct the region differently. The former focuses on the values of the ecosystem without being able to devise a system of sharing the benefits with the local people. The latter describes the region as an unstable, immature and active delta unfit for human habitation. Economists calculate values of the ecosystem services and products offered by the Sundarbans but fail to deliberate upon or devise a mechanism of sharing these benefits. Conservationists feel that the fragile balance of life-forms and biodiversity in the Sundarbans are critically endangered, which might eventually jeopardise human existence itself. The discourse of both the expert and the policy actors shifts the burden and onus of adaptation to the self-organising capacities of the local residents. While rehabilitation, livelihood security, built and human capital remain absent, the locals are not only expected to cope with hazards autonomously but also relinquish their living spaces to avoid future disasters. These multiple perceived realities make sustainability and climate governance in the Sundarbans a staggering intellectual and policy challenge.
研究严格双对角占优矩阵A在一定条件下，v下界的一种新估计．对满足n≥k≥i≥1的任意k，i，有｜akk｜-Rk≤laii｜—Ri，进而得到新的下界mini≠j｜｜ajj｜＋Ri（A）/｜aii×... more 研究严格双对角占优矩阵A在一定条件下，v下界的一种新估计．对满足n≥k≥i≥1的任意k，i，有｜akk｜-Rk≤laii｜—Ri，进而得到新的下界mini≠j｜｜ajj｜＋Ri（A）/｜aii×ajj｜-Ri（A）×Rj（A）}.并且证明这种新的估计要比已存在的下界更精确．最后用数值例子说明了这个结论的有效性．
Els sistemes aquatics continentals inclouen rius, estanys (o llacs), llacunes (o estanyols) i emb... more Els sistemes aquatics continentals inclouen rius, estanys (o llacs), llacunes (o estanyols) i embassaments com a masses d’aigua superficials. Aquests sistemes recullen tant les influencies climatiques com les que son fruit de l’activitat humana que es desenvolupa a la conca, de les quals les dinamiques hidrologica, sedimentaria, biogeoquimica i biologica son receptores directes. El canvi climatic afecta la quantitat i la frequencia de les pluges i l’evapotranspiracio que s’efectua a la conca, amb efectes directes en la magnitud i la frequencia dels patrons hidrologics. S’estima que el canvi climatic pot ser el detonant de l’augment de la frequencia d’esdeveniments extrems i transitoris (com ara les sequeres i les avingudes) a les regions amb clima mediterrani, i de l’augment de la raresa de les condicions hidrologiques basals: els sistemes funcionaran cada vegada mes en regim episodic, mentre que els canvis progressius i estacionals seran mes difusos. L’increment anomal de la temper...
The Journal of the Association of Physicians of India, 2020
Current medical care is heavily reliant on the use of evidence-based guidelines dealing with diag... more Current medical care is heavily reliant on the use of evidence-based guidelines dealing with diagnosis and therapy. The burgeoning medical literature, easy availability of medical information in the social media and consumerism has increased the additional number of issues discussed during a patient physician meeting. Inability to satisfy the patient or their families due to poor communication skills of physicians remains an universal challenge all over the world. Poor patient physician communication decrease patient compliance to treatment strategies, poor patient satisfaction scores and on the extreme lead to violence directed to physicians. Most medical schools and residency programs have incorporated patient-physician's communication skills in their curriculum. Similar opportunities to improve communication skills are available for practicing physicians. There are numerous tools that can be readily incorporated to improve the quality of patient physician communication. Commu...
Rivers suffer from more severe decreases in species diversity compared to other aquatic and terre... more Rivers suffer from more severe decreases in species diversity compared to other aquatic and terrestrial ecosystems due to a variety of pressures related to human activities. Species provide different roles in the functioning of the ecosystem, and their loss may reduce the capacity of the ecosystems to respond to multiple stressors. The effects on diversity will differ based on the type, combination and severity of stressors, as well as on the characteristics of the community composition and tolerance. Multiple trait-based approaches (MTBAs) can help to unravel the effects of multiple stressors on communities, providing a mechanistic interpretation, and, thus, complementing traditional biodiversity assessments using community structure. We studied the relationships between diversity indexes and trait composition of macroinvertebrate and diatom communities, as well as environmental variables that described the hydrological and geomorphological alterations and toxic pollution (pesticides and pharmaceuticals) of three different European river basins: the Adige, the Sava, and the Evrotas. These river basins can be considered representative cases of different situations in European freshwater systems. Hydrological variables were the main drivers determining the community structure and function in the rivers, for both diatoms and macroinvertebrates. For diatom communities, pharmaceutical active compound (PhAC) toxic units were also identified as a very important driver of diversity changes, explaining up to 57% of the variance in taxonomic richness. For macroinvertebrates, river geomorphology was an important driver of structural changes, particularly affecting Plecoptera richness. In addition, PhAC and pesticide toxic units were also identified as stressors for macroinvertebrate communities. MTBA provided a detailed picture of the effects of the stressors on the communities and confirmed the importance of hydrological variables in shaping the functional attributes of the communities.
The discursive conflicts over policies and governance of the Indian Sundarbans are staged in the ... more The discursive conflicts over policies and governance of the Indian Sundarbans are staged in the media which constitute the public sphere. Clear winners seem to emerge from such contestations despite the linguistic, sociocultural differences that characterise audiences of different newspapers. Instead of promoting plurality and deliberate upon diverse points-of-view, arguments and solutions about possible development pathways for the region, the media discourse on the Sundarbans is increasingly becoming polarised and homogenous. There is a clear discursive shift even in the vernacular or local languages which increasingly speak of and reiterate the global and elite agenda of conservation and embankment instead of locally nuanced socioecological agendas, dominant earlier in the local language newspapers. The discursive convergence between the coverage of English and that of the Bengali newspapers indicates a global architecture of biopower and hegemony pervading the media of the mass...
A mathematical Model is presented here which describes the growth of tumor cells with one term de... more A mathematical Model is presented here which describes the growth of tumor cells with one term delay and it's intrinsic behaviour in the presence of immune cell. Here in this model we have also considered the effect of drug administered and assumed that drug kills both immune and tumor cells. The stability of immune cells and tumor cells with the effect of drug and delay is analyzed under equilibrium conditions. AMS Subject Classification: 92B05, 90-08, 65L07, 65L06
The Indian Sundarbans is one of the most backward regions in South Asia despite being a critical ... more The Indian Sundarbans is one of the most backward regions in South Asia despite being a critical global commons because of its unique biodiversity including the endangered Royal Bengal Tiger. Characterised by subsistence economy, the region records very high level of poverty. Local livelihoods largely depend on natural resources which are either dwindling fast (fish) or becoming unproductive (increasing salination making agriculture increasingly difficult). While there is a clear aspirational shift towards more formal livelihoods such as white-collar professions, the daily unproductive livelihood negotiations are becoming serious threats to long-term sustenance and sustainability of the socioecological system. The built capital or the infrastructure is poorly developed which make it difficult for the locals to realise the true productive capacity of the region. This also fails to bolster human capital that can enable informed choices about the household-level aspirational trajectori...
Humanities and Social Sciences Communications, 2021
Through a Foucauldian reading of Bama’s Sangati (2005) and P. Sivakami’s The Grip of Change (2006... more Through a Foucauldian reading of Bama’s Sangati (2005) and P. Sivakami’s The Grip of Change (2006a, 2006b), this paper attempts to delineate the permeation and maintenance of disciplinary power in the social structure and assertion of patriarchal politics in the subjugation of Dalit female bodies. The detrimental politics of patriarchal discourse, the paper argues, degrades the existence of Dalit women, and excludes them from the equation of power relations by delimiting their access to society’s productive resources and restricting their sexuality. Disciplinary power, which acts as a patriarchal tool, prescribes acceptable gestures and required behaviour, and through constant surveillance normalizes a dominant male order. It reduces Dalit women’s existence into an amorphous property, readily mutilated and moulded under the whims of a phallocentric order. Discursive practices further constitute practices of body politics, making the female body an object of active site of political ...
... Disclaimer/Klachtenregeling Meent u dat de digitale beschikbaarstelling van bepaald materiaal... more ... Disclaimer/Klachtenregeling Meent u dat de digitale beschikbaarstelling van bepaald materiaal inbreuk maakt op enig recht dat u toekomt of uw (privacy)belangen schaadt, dan kunt u dit onderbouwd aan de Universiteitsbibliotheek laten weten. ...
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