scholarly journals Nanotechnology: A Journey towards Finding Solutions

2015 ◽  
Vol 5 (1) ◽  
pp. 61
Author(s):  
Satya Pal Singh
Keyword(s):  
Health And Safety ◽  
Functional Materials ◽  
Simulation Method ◽  
Industrial Applications ◽  
Policy Makers ◽  
Advance Research ◽  
American Physical ◽  
Richard Feynman ◽  
And Control ◽  
Thin Film Magnetism

<p class="1Body">Nanotechnology is the understanding and control of matter at the diemnsions ranging between 1-100 nm. One nanometer is one billionth of a meter. Nanotechnology involves manipulation of atoms, imaging, measuring and modelling at nano scale. Its potentials were first highlighted by Richard Feynman in the American Physical Scociety meeting in 1959. Though, he did not coin the world nanotechnology himself but he explored the possiblities of functional materials at the bottom of the scale. In last two decades this technology has been commercialized to great extent and gaining importance day by day influencing the economies of different countries and henceforth enforcing the policy makers to address the issues like environment, health and safety. Governments are regularisaing and monitoring its research, uses, applications and technology transfer which includes intelluctaul property rights. This paper addresses the dimensions and trends of nanotechnology covering economic aspects. The paper is focussed on the changes in the functional properties of nanomaterials as physical, chemical, optical, electronic, electrical, magnetic etc. in comparision to those of the bulk of material. It has been discussed how the basic and advance research in nanoscience could be explotiedfor making technologies for its commercial and industrial applications for the benefit and safety of the soceity. Thin film magnetism is demonstrated using Monte Carlo simulation method. Experimental synthesisof some of thenanorods and qunatum dots are also discussed.</p>

scholarly journals Workplace Healthy Lifestyle Determinants and Wellbeing Needs across the Preconception and Pregnancy Periods: A Qualitative Study Informed by the COM-B Model

2021 ◽  
Vol 18 (8) ◽  
pp. 4154
Author(s):  
Seonad K. Madden ◽  
Claire A. Blewitt ◽  
Kiran D. K. Ahuja ◽  
Helen Skouteris ◽  
Cate M. Bailey ◽  
...  
Keyword(s):  
Healthy Lifestyle ◽  
Intervention Development ◽  
Health Behavior Change ◽  
Overweight And Obesity ◽  
Specific Reference ◽  
Lifestyle Behaviors ◽  
Policy Makers ◽  
Health And Wellbeing ◽  
Healthy Lifestyle Behaviors ◽  
And Control

Overweight and obesity present health risks for mothers and their children. Reaching women during the key life stages of preconception and pregnancy in community settings, such as workplaces, is an ideal opportunity to enable health behavior change. We conducted five focus groups with 25 women aged between 25 and 62 years in order to investigate the determinants of healthy lifestyle behaviors, weight management, and wellbeing needs during the preconception and pregnancy periods in an Australian university workplace. Discussions explored women’s health and wellbeing needs with specific reference to workplace impact. An abductive analytical approach incorporated the capability, opportunity, and motivation of behavior (COM-B) model, and four themes were identified: hierarchy of needs and values, social interactions, a support scaffold, and control. Findings highlight the requirement for greater organization-level support, including top-down coordination of wellbeing opportunities and facilitation of education and support for preconception healthy lifestyle behaviors in the workplace. Interventionists and organizational policy makers could incorporate these higher-level changes into workplace processes and intervention development, which may increase intervention capacity for success.

scholarly journals Strata behavior and control strategy of backfilling collaborate with caving fully-mechanized mining

2020 ◽  
Vol 12 (1) ◽  
pp. 703-717
Author(s):  
Yin Wei ◽  
Wang Jiaqi ◽  
Bai Xiaomin ◽  
Sun Wenjie ◽  
Zhou Zheyuan
Keyword(s):  
Numerical Simulation ◽  
Control Strategy ◽  
Three Dimensional ◽  
Simulation Method ◽  
Mine Pressure ◽  
Hydraulic Support ◽  
Transition Area ◽  
Pressure Concentration ◽  
Strata Behavior ◽  
And Control

AbstractThis article analyzes the technical difficulties in full-section backfill mining and briefly introduces the technical principle and advantages of backfilling combined with caving fully mechanized mining (BCCFM). To reveal the strata behavior law of the BCCFM workface, this work establishes a three-dimensional numerical model and designs a simulation method by dynamically updating the modulus parameter of the filling body. By the analysis of numerical simulation, the following conclusions about strata behavior of the BCCFM workface were drawn. (1) The strata behavior of the BCCFM workface shows significant nonsymmetrical characteristics, and the pressure in the caving section is higher than that in the backfilling section. φ has the greatest influence on the backfilling section and the least influence on the caving section. C has a significant influence on the range of abutment pressure in the backfilling section. (2) There exits the transition area with strong mine pressure of the BCCFM workface. φ and C have significant effect on the degree of pressure concentration but little effect on the influence range of strong mine pressure in the transition area. (3) Under different conditions, the influence range of strong mine pressure is all less than 6 m. This article puts forward a control strategy of mine pressure in the transition area, which is appropriately improving the strength of the transition hydraulic support within the influence range (6 m) in the transition area according to the pressure concentration coefficient. The field measurement value of Ji15-31010 workface was consistent with numerical simulation, which verifies the reliability of control strategy of the BCCFM workface.

Asymptotic Behavior in Slumping From a Cylindrical Tank

1984 ◽  
Vol 106 (3) ◽  
pp. 279-284 ◽  
Author(s):  
Y. Bai ◽  
W. Johnson ◽  
R. G. M. Low ◽  
S. K. Ghosh
Keyword(s):  
Transition Period ◽  
Health And Safety ◽  
Local Environment ◽  
Theoretical Background ◽  
Hazardous Substance ◽  
Substance Flows ◽  
Linear Relationships ◽  
Characteristic Features ◽  
And Control ◽  
Future Work

When an oil tank collapses or ruptures any contained hazardous substance flows outwards and can damage nearby plant or people as well as lead to pollution of the local environment. In recent years, this and similar subjects have given rise to a new kind of engineering—spill prevention and control. However, theoretical background, backed by experiment, is lacking to work out reliable regulations. An intermediate-asymptotic analysis for late-stage spreading is carried out in this paper. This analysis reveals several characteristic features of the spill wave such as transition period and linear relationships between spreading area and time, and wave front velocity and the inverse of zone radius. Most of the latter results have been verified by model experiment. This paper also discusses the discrepancies between observations and the theory suggested in a recent UK Health and Safety Executive report. Finally, the present paper puts forward proper modeling rules for future work.

Commissioning and Control of the AMB Supported 3.5 kW Laboratory Gas Blower Prototype

2013 ◽  
Vol 198 ◽  
pp. 451-456 ◽  
Author(s):  
Rafał P. Jastrzębski ◽  
Alexander Smirnov ◽  
Katja Hynynen ◽  
Janne Nerg ◽  
Jussi Sopanen ◽  
...  
Keyword(s):  
Control System ◽  
Permanent Magnet ◽  
Induction Motor ◽  
Industrial Applications ◽  
Magnetic Bearing ◽  
Active Magnetic Bearing ◽  
Sensor Calibration ◽  
Full Potential ◽  
Disturbance Analysis ◽  
And Control

This paper presents the practical results of the design analysis, commissioning, identification, sensor calibration, and tuning of an active magnetic bearing (AMB) control system for a laboratory gas blower. The presented step-by-step procedures, including modeling and disturbance analysis for different design choices, are necessary to reach the full potential of the prototype in research and industrial applications. The key results include estimation of radial and axial disturbance forces caused by the permanent magnet (PM) rotor and a discussion on differences between the unbalance forces resulting from the PM motor and the induction motor in the AMB rotor system.

scholarly journals Farmer Knowledge in Potato Virus Epidemiology and Control in Kenya

2020 ◽  
Author(s):  
John Onditi ◽  
Nancy Ng’anga ◽  
Moses Nyongesa ◽  
René van der Vlugt
Keyword(s):  
Potato Virus ◽  
Management Strategies ◽  
Technical Information ◽  
Household Survey ◽  
Farmer Knowledge ◽  
Policy Makers ◽  
Virus Control ◽  
Modes Of Transmission ◽  
Potato Yields ◽  
And Control

AbstractPotato is an important food security crop in Kenya. High prevalence of potato viruses is one of the major causes of low potato yields. Implementation of effective virus management strategies requires information on farmers’ perceptions and practices on virus epidemiology and control. To better understand farmers’ knowledge and practices in virus control and set possible pathways for intervention, a household survey involving 147 respondents was conducted in two major potato-growing regions in Kenya. Lack of sufficient technical information on potato virus symptoms, vectors and modes of transmission was found to be the major hindrance to farmers’ efforts towards virus control. A spider diagram approach was therefore used to determine the aspect of virus control that required the highest prioritization for immediate intervention by policy makers. Use of virus-resistant cultivars was found to require the most urgent attention compared to other aspects of virus control and was expected to have greater impact in lowering virus prevalence. This study showed that enhancing farmer knowledge needs to be prioritised as this is a key determinant of the success of the virus control strategy to be selected for implementation.

scholarly journals Dynamic Analysis and Control of an Automatic Transmission for Start-Stop Function and Efficiency Improvement

2015 ◽  
Vol 2015 ◽  
pp. 1-13
Author(s):  
Yang Liu ◽  
Shuhan Wang ◽  
Peng Dong ◽  
Xiangyang Xu
Keyword(s):  
Control Strategies ◽  
Automatic Transmission ◽  
Simulation Method ◽  
Transmission Efficiency ◽  
The Novel ◽  
Test Results ◽  
Test Environment ◽  
Pump System ◽  
Oil Pump ◽  
And Control

An electric oil pump (EOP) was integrated into the hydraulic system and an automatic transmission (AT) mechanical oil pump (MOP) was downsized. These processes were performed to combine a start-stop function with the AT and further improve the transmission efficiency. Furthermore, this study established a dynamics model of power loss and leakage of an 8-speed AT; a flow-based control algorithm of the EOP was then developed to realize the start-stop function and support the MOP to meet the flow requirement of the system. Based on a driving simulation method, sizes of the MOP and EOP that ensured optimal fuel economy were selected. A control strategy for the starting clutch was also developed to minimize the starting delay of the test vehicle. A test environment on a rig and prototype vehicle was established to verify the feasibility of the proposed control strategies. The test results indicated that the transmission functioned favorably with the novel two-pump system presented, and a quick and smooth starting performance was achieved when the engine was restarted. The findings in this study are extremely valuable for forward designs of an AT for realizing start-stop function and improving efficiency.

scholarly journals Reducing Assaults Against Staff Using Body-Worn Cameras (BWCs) in Railway Stations

2018 ◽  
Vol 44 (1) ◽  
pp. 76-93 ◽  
Author(s):  
Barak Ariel ◽  
Mark Newton ◽  
Lorna McEwan ◽  
Garry A. Ashbridge ◽  
Cristobal Weinborn ◽  
...  
Keyword(s):  
Workplace Violence ◽  
Physical Violence ◽  
Controlled Trial ◽  
Health And Safety ◽  
Cost Effective ◽  
Railway Stations ◽  
Major Health ◽  
Diffusion Of Benefits ◽  
And Control ◽  
Official Records

Workplace violence is a major health and safety phenomenon. We investigate whether body-worn cameras (BWCs) can achieve a cost-effective reduction of assaults. We conducted a randomized controlled trial with train stations exposed to the highest recorded assault rates against staff in England and Wales. Treatment members of staff were equipped with BWCs and control staff were unexposed to BWCs. Official records of assaults against treatment and control staff as well as against any employee at the station complexes are used as outcome measures. Results suggest 47% significant overall reduction in the odds of assaults against BWCs-equipped staff at treatment versus controls locations—or approximately two versus four assaults, on average, per station. In addition, we found a 26% significant reduction in assaults against all employees in the treatment versus control station complexes—9 versus 12 assaults, on average, per station—suggesting that BWCs have a spatial diffusion of benefits effects. We estimate that BWCs can reduce at least 3,000 working days per year lost because of physical violence at work. We conclude that BWCs provide substantial benefits for staff health and safety to those who are equipped with the devices as well as to staff in the vicinity of BWC-equipped employees.

scholarly journals ICAN- International Common Assessment Number: The need of the hour

2012 ◽  
Vol 2 (3) ◽  
pp. 147
Author(s):  
G.V. Satya Sekhar
Keyword(s):  
Financial Reporting ◽  
Tax Planning ◽  
Assessment System ◽  
Monitoring And Control ◽  
Double Taxation ◽  
Policy Makers ◽  
Corporate World ◽  
Transfer Prices ◽  
And Control ◽  
Uniform Assessment

When   there is a system of international financial reporting system (IFRS) is much in discussion, why the policy makers are not thinking for ICAN( International Common Assessment Number) in place of PAN (Permanent Assessment Number)as in the  in case of assessees in India.    In this situation, any individual’s income earned any where in the world can become  under a common tax planning tool.The government of India has agreements with most other nations that determine how multinational companies are taxed. In other words, the tax treaties attempt to avoid the double-taxation that would occur if two nations taxed the same income. Since transfer prices represent revenue to the upstream division and an expense to the downstream division, the transfer price affects the calculation of divisional profits that represent taxable income in the nations where the divisions are based. Further, double taxation avoidance agreements also helpful for monitoring and control of fraudulent affairs in the corporate world. In this context, this paper is intended to examine the significance of uniform assessment system in the entire world and need for common assessment number. 

scholarly journals Estimation of Burden of Cystic Echinococcosis in Iran Using Disability Adjusted Life Years (DALYs) in 2018

2021 ◽  
Author(s):  
Fateme Parandin ◽  
Fatemeh Heydarpour ◽  
Mehdi Mohebali ◽  
Ahmad Ali Hanafi-Bojd ◽  
Ali Akbari Sari ◽  
...  
Keyword(s):  
Premature Death ◽  
Years Of Life Lost ◽  
Disability Adjusted Life Years ◽  
Public Concern ◽  
Policy Makers ◽  
Control Programs ◽  
Disability Adjusted Life ◽  
Life Years ◽  
Standard Life ◽  
And Control

Background: Human hydatidosis as a public concern has increased in a number of countries that have reduced control programs for the disease due to lack of resources or policies. We aimed to estimate Disability-Adjusted Life Years (DALYs) for human hydatidosis in Iran in 2018. Methods: Data were collected from the Center of Communicable Diseases Control, Ministry of Health &Medical Education, Tehran, Iran in 2018. To calculate DALYs, years of life lost due to premature death (YLL) with years of life with disability (YLD) were calculated according to the formula as DALY = YLL + YLD. The standard life expectancy lost method (SEYLL) was used to calculate the years lost due to premature death. Results: DALYs for human hydatidosis was calculated as 1210.12 years (YLD equals to 177.12 and YLL equals to 1033) in Iran for the year 2018. It was estimated to be 700.2 years for men and 509.8 years for women.  DALYs in men were significantly different from women (P= 0.001) so DALYs were more in men than women were. YLD was calculated at 78.228 years in men and 98.892 years in women and in both men and women at 177.12 years. YLD was significantly different in women compared to men (P=0.001), so YLD in women was more than in men. Conclusion: We reached considerable indices for hydatidosis in our study. Therefore, disease prevention and control programs in Iran seem necessary by the policy makers.

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