When droplets coalesce on a superhydrophobic nanostructured surface, the resulting droplet can jump from the surface due to the release of excess surface energy. If designed properly, these superhydrophobic nanostructured surfaces can not only allow for easy droplet removal at micrometric length scales during condensation but also promise to enhance heat transfer performance. However, the rationale for the design of an ideal nanostructured surface as well as heat transfer experiments demonstrating the advantage of this jumping behavior are lacking. Here, we show that silanized copper oxide surfaces created via a simple fabrication method can achieve highly efficient jumping-droplet condensation heat transfer. We experimentally demonstrated a 25% higher overall heat flux and 30% higher condensation heat transfer coefficient compared to state-of-the-art hydrophobic condensing surfaces at low supersaturations (<1.12). This work not only shows significant condensation heat transfer enhancement but also promises a low cost and scalable approach to increase efficiency for applications such as atmospheric water harvesting and dehumidification. Furthermore, the results offer insights and an avenue to achieve high flux superhydrophobic condensation.

Jumping-Droplet-Enhanced Condensation on Scalable Superhydrophobic Nanostructured Surfaces

The objective of this work is to determine and study, analyze and elaborate, classify and categorize the main risk analysis and risk-assessment methods and techniques by reviewing the scientific literature. The paper consists of two parts: a) the investigation, presentation and elaboration of the main risk-assessment methodologies and b) the statistical analysis, classification, and comparative study of the corresponding scientific papers published by six representative scientific journals of Elsevier B.V. covering the decade 2000–2009. The scientific literature reviewing showed that the risk analysis and assessment techniques are classified into three main categories: (a) the qualitative, (b) the quantitative, and (c) the hybrid techniques (qualitative–quantitative, semi-quantitative). The qualitative techniques are based both on analytical estimation processes, and on the safety managers–engineers ability. According to quantitative techniques, the risk can be considered as a quantity, which can be estimated and expressed by a mathematical relation, under the help of real accidents’ data recorded in a work site. The hybrid techniques, present a great complexity due to their ad hoc character that prevents a wide spreading. The statistical analysis shows that the quantitative methods present the highest relative frequency (65.63%) while the qualitative a lower one (27.68%). Furthermore the hybrid methods remain constantly at a very low level (6.70%) during the entire processing period.

http://risktr.com/dokumanlar/risk%20analysis%20and%20assessment%20methodologies%20in%20th%20work%20sites.pdf

Risk analysis and assessment methodologies in the work sites: On a review, classification and comparative study of the scientific literature of the period 2000–2009

Two-phase flow instabilities: A review

Thorium fuel cycle : potential benefits and challenges

Vehicle system dynamics integration encompasses interdisciplinary challenges innovations in various aspects related to vehicle system/subsystems/components dynamic characteristics, modeling and validation, vehicle dynamics state measurement and estimation, vehicle/chassis control systems, coordination of power management and dynamics/stability control, etc [1-4]. These are becoming more critical due to the increasing concern and rapid development in electric and hybrid vehicles, which tend to exhibit different vehicle dynamics/stability and control characteristics when compared to conventional vehicles.

Mechanical systems and signal processing

https://www.anilkakodkar.in/kakodkar_pdf/journal_003.pdf

Design and development of the AHWR—the Indian thorium fuelled innovative nuclear reactor

Use of Miniature Tensile Specimen for Measurement of Mechanical Properties

Investigation on condensation in presence of a noncondensable gas for a wide range of Reynolds number

High temperature reactors

Cancer is expected to be a major problem in developing countries like India. The International Agency for Research on Cancer GLOBOCAN project estimated that the burden of cancer in India is likely to almost double with an estimated incidence of 1 million cases in 2012 to about 1.7 million in 2035.[1] Importantly, the number of cancer deaths is expected to rise from 680,000 in 2012 to 1.2 million in 2035.[1] The mortality: incidence ratio of 0.68 in India is far higher than that in very high human development index (HDI) countries (0.38) and high HDI countries (0.57).[2] Although some of this discrepancy might be because of overdiagnosis due to screening in developed countries, part of it is because of inequitable distribution and inaccessibility of healthcare resources to vast parts of the country.[2] Decreased survival in developing countries is likely due to a combination of advanced stage at diagnosis, limited access to quality cancer care and the inability of patients to afford optimum treatment. These issues need to be addressed on multiple fronts: Increasing awareness of cancer as a treatable disease amongst patients and primary care physicians, making cancer care available to patients at their doorsteps and identifying innovative, cost-effective methods of diagnosis and treatment.

/pdf/the-national-cancer-grid-of-india-2iyvemy0x3.pdf

R.K. Sinha

Papers

Design and development of the AHWR—the Indian thorium fuelled innovative nuclear reactor

Use of Miniature Tensile Specimen for Measurement of Mechanical Properties

Investigation on condensation in presence of a noncondensable gas for a wide range of Reynolds number

High temperature reactors

The national cancer grid of India.