Quantifying the demand-side response capability of industrial plants to participate in power system frequency control schemes

© 2015 IEEE.Efficiency and sustainability considerations have propelled changes in power and process industries. These changes, which include the increased electrification of process industries, are causing concerns about the reliability of future electricity supplies, and therefore motivate the need for a Smart Grid on an industrial scale. This paper presents a method by which process automation engineers can assess the suitability of an oil and gas plant to participate in power system frequency control services. This paper discusses the necessary specifications for an automated system that enables effective variable operation by analysing the safe operating envelope of the plant. To do that, this paper proposes a methodology to characterise the appropriate actuators, variables and limits of set-point change. This methodology is applied to a case study representing an oil processing facility. The resulting analysis indicates demandside response capability that the facility can provide without jeopardising operations on-site

Clear View Sdn. Bhd. / Im Qama Azhar Zulkifli ... [et al.]

The development in Malaysia are encouraging and giving us an initiative to run our own business. The business that we are going to perform is rendering a business of indoor cleaning services. The name of our business is CLEAR VIEW Shd Bhd. Beside that we also provide a indoor cleaning such as sweeping, toilet cleaning, rubbish, disposal, premises window polishing, mopping and floor buffing. We are sure that the business regarding to the indoor cleaning will give us the best income our business. Our business is planning to be made-up at No 2, Jin Badminton 13/29, Section 13, Shah Alam, Selangor. And we are planning to start this business on 1st January 2007. We are choosing this area because we found that it has high prospect to develop and the strategic area. School and working sector are our main target to earn more profit. The overview of our company is in Shah Alam due to there are not many company doing this kind of business, and this the bonus for us. So due to that it is influencing us to choose this business. Beside that our company not only focus in Shah Alam but all over Selangor also. Finally we hope that this business will give us a good potential to develop more and more

Hydrolysis optimization and characterization study of preparing fatty acids from Jatropha curcas seed oil

<p>Abstract</p> <p>Background</p> <p>Fatty acids (FAs) are important as raw materials for the biotechnology industry. Existing methods of FAs production are based on chemical methods. In this study potassium hydroxide (KOH)-catalyzed reactions were utilized to hydrolysis <it>Jatropha curcas </it>seed oil.</p> <p>Results</p> <p>The parameters effect of ethanolic KOH concentration, reaction temperature, and reaction time to free fatty acid (FFA%) were investigated using D-Optimal Design. Characterization of the product has been studied using Fourier transforms infrared spectroscopy (FTIR), gas chromatography (GC) and high performance liquid chromatography (HPLC). The optimum conditions for maximum FFA% were achieved at 1.75M of ethanolic KOH concentration, 65°C of reaction temperature and 2.0 h of reaction time.</p> <p>Conclusions</p> <p>This study showed that ethanolic KOH concentration was significant variable for <it>J. curcas </it>seed oil hydrolysis. In a 18-point experimental design, FFA% of hydrolyzed <it>J. curcas </it>seed oil can be raised from 1.89% to 102.2%, which proved by FTIR and HPLC.</p

Camels and Climate Resilience: Adaptation in Northern Kenya

In the drylands of Africa, pastoralists have been facing new challenges, including those related to environmental shocks and stresses. In northern Kenya, under conditions of reduced rainfall and more frequent droughts, one response has been for pastoralists to focus increasingly on camel herding. Camels have started to be kept at higher altitudes and by people who rarely kept camels before. The development has been understood as a climate change adaptation strategy and as a means to improve climate resilience. Since 2003, development organizations have started to further the trend by distributing camels in the region. Up to now, little has been known about the nature of, reasons for, or ramifications of the increased reliance on camels. The paper addresses these questions and concludes that camels improve resilience in this dryland region, but only under certain climate change scenarios, and only for some groups.This study was funded by The Royal Geographical Society with Institute of British Geographers Thesiger-Oman Fellowship

Development as Eradication: The Pillage of the Jakun ‘People’s Bank’ of Tasik Chini, Pahang, Malaysia

The political rhetoric of social and economic development in Malaysia is used as a dominant and largely unquestioned discourse to justify the industrialised exploitation of the traditional territories of the indigeneous people of West Malaysia. This paper explores social policy drivers in respect of findings from a condensed ethnography of the Jakun Orang Asli people of Tasik Chini in the State of Pahang. Tasik Chini provides an important example of a wider problem affecting many Orang Asli communities in Malaysia relating to industrial exploitation, but is a case of special interest in respect of its significance as a site of rich and unique biodiversity as well as being the home of one of only two freshwater lakes in West Malaysia. Notably, Tasik Chini is also a UNESCO Biosphere Reserve, of which there are only two in Malaysia, and where the lake and surrounding forests have provided the Jakun villagers with abundant natural resources for subsistence, but now the area is badly eroded and polluted by the ravages of big business. This presents a serious dilemma for the Jakun concerning resisting the destruction of their traditional way of life or to comply with State agendas and collude with their loss of self-sufficiency and autonomy and in so doing raises important questions regarding national social policy drivers and the position and welfare of indigenous people in Malaysia

Pooled analysis of WHO Surgical Safety Checklist use and mortality after emergency laparotomy

Background The World Health Organization (WHO) Surgical Safety Checklist has fostered safe practice for 10 years, yet its place in emergency surgery has not been assessed on a global scale. The aim of this study was to evaluate reported checklist use in emergency settings and examine the relationship with perioperative mortality in patients who had emergency laparotomy. Methods In two multinational cohort studies, adults undergoing emergency laparotomy were compared with those having elective gastrointestinal surgery. Relationships between reported checklist use and mortality were determined using multivariable logistic regression and bootstrapped simulation. Results Of 12 296 patients included from 76 countries, 4843 underwent emergency laparotomy. After adjusting for patient and disease factors, checklist use before emergency laparotomy was more common in countries with a high Human Development Index (HDI) (2455 of 2741, 89.6 per cent) compared with that in countries with a middle (753 of 1242, 60.6 per cent; odds ratio (OR) 0.17, 95 per cent c.i. 0.14 to 0.21, P <0001) or low (363 of 860, 422 per cent; OR 008, 007 to 010, P <0.001) HDI. Checklist use was less common in elective surgery than for emergency laparotomy in high-HDI countries (risk difference -94 (95 per cent c.i. -11.9 to -6.9) per cent; P <0001), but the relationship was reversed in low-HDI countries (+121 (+7.0 to +173) per cent; P <0001). In multivariable models, checklist use was associated with a lower 30-day perioperative mortality (OR 0.60, 0.50 to 073; P <0.001). The greatest absolute benefit was seen for emergency surgery in low- and middle-HDI countries. Conclusion Checklist use in emergency laparotomy was associated with a significantly lower perioperative mortality rate. Checklist use in low-HDI countries was half that in high-HDI countries.Peer reviewe