Sharif University of Technology

www.sharif.ir
Tehran, Iran

Sharif University of Technology is a public research university in Tehran, Iran known traditionally to be first choice of top ranked Iranian high school and university students in engineering and physical science. The university is located in the Tarasht neighborhood of Tehran within close proximity of Azadi Square, and also has an international campus in Kish, a resort island in the Persian Gulf.Established in 1966, it was formerly named the Aryamehr University of Technology and for a short period after the 1979 revolution, the university was called Tehran University of Technology. Following the revolution the university was named after Majid Sharif Vaghefi, a former student who was killed in 1975.Today, the university provides both undergraduate and graduate programs in 15 main departments. The student body consists of about 6,000 undergraduate students and 4,700 graduate students from all the 30 provinces of Iran. Funding for Sharif University is provided by the government and through private funding. Undergraduate admission to Sharif is limited to the top 1 percent of students who pass the national entrance examination administered annually by the Iranian Ministry of Science, Research and Technology.In the 2013 Academic Ranking of World Universities Engineering/Technology and Computer science rankings, SUT is ranked 5th in the Middle East. It is in the top 251-275 universities in the world and 37th in Asia in the 2014 Times Higher Education World University Rankings. SUT also ranked 1st in the Middle East, 6th in Asia, and 27th in the world in Times Higher Education's top 100 universities under 50. Wikipedia.

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"ARC's team executed another strong quarter, which included advancing construction of the Dawson Phase III gas processing and liquids-handling facility, for which we expect to initiate commissioning activities in the second quarter of 2017," stated Myron Stadnyk, President and CEO. "In addition to the capital investment at Dawson, our development activities in the first quarter of 2017 allowed us to further our understanding of the Lower Montney, which adds development inventory to support future project expansions across our Montney land base. Our current balance sheet strength increases our ability to execute multi-year development projects at Dawson, Parkland/Tower, and Sunrise, and to enter into long-term marketing contracts as we reinvest the proceeds received from the sale of our Saskatchewan assets in late 2016. ARC remains committed to running a profitable business, and with our low-cost Montney businesses, we will be able to maximize the value we continue to create for our shareholders." ARC achieved first quarter 2017 production of 115,129 boe per day, which was two per cent lower than the fourth quarter of 2016. The lower production was a result of the divestment of ARC's Saskatchewan assets in late 2016, which was partially offset by production returning from third-party pipeline restrictions at Dawson in the previous quarter, and production from new wells and optimization activities at Ante Creek. First quarter 2017 natural gas production was 496 MMcf per day and crude oil and liquids production was 32,427 barrels per day. As planned, ARC's second quarter 2017 production will be lower than the first quarter by a few per cent due to planned maintenance activities and anticipated spring break-up impacts to production and field operations. As commissioning activities for the Dawson Phase III gas processing and liquids-handling facility are initiated in the second quarter of 2017, ARC expects production levels at Dawson to increase through the second half of the year. Full-year 2017 annual production is expected to be in the range of 118,000 to 124,000 boe per day, and ARC anticipates its 2017 exit rate to be in excess of 130,000 boe per day. ARC continued to deliver strong financial performance in the first quarter of 2017 with net income of $142.5 million ($0.40 per share). Strengthened commodity prices mitigated the slight decrease in production volumes in the period and resulted in funds from operations of $177.2 million ($0.50 per share) in the first quarter of 2017. Profitability remains a key measure of performance at ARC, and strong full-cycle economics across our portfolio of assets enable us to efficiently convert our resources into earnings for shareholders. ARC's marketing strategy focuses on both natural gas takeaway in western Canada and managing a market diversification strategy. The effectiveness of this strategy is evidenced by minimal impacts to production from pipeline restrictions and strong price realizations due to a diversified sales strategy. Over the quarter, ARC continued to pursue natural gas takeaway with participation in TransCanada Pipeline's ("TCPL") North Montney Mainline Project, and additional diversification with participation in TCPL's Mainline open season. In addition to ARC's physical diversification strategy, ARC's financial hedging program continues to provide greater certainty of cash flows and support of long-term business plans, with first quarter 2017 realized cash gains of $24.4 million. The fair value of ARC's risk management contracts at March 31, 2017 was a net asset of $264.4 million. First quarter 2017 capital expenditures, before land and net property acquisitions and dispositions, of $255.2 million were focused on infrastructure investment at Dawson Phase III and Parkland/Tower Phase III, drilling and completions activities throughout the Montney and the Cardium, and development activities directed at the Lower Montney. With a planned 2017 capital program of $750 million, the first quarter was expected to be the most capital-intensive quarter of the year. The 2017 capital program will allow ARC to sustain its base businesses, carry out drilling rig schedule optimization, complete and bring Dawson Phase III on-stream, and pre-drill wells to bring on production in 2018. As part of the proactive planning of our capital programs, rigs and services have been secured through 2017 to support our budgeted capital plans. ARC drilled 46 operated wells (29 crude oil wells, 15 liquids-rich natural gas wells, and two natural gas wells) in the first quarter of 2017, many of which will be brought on production late in the second quarter of 2017. The following table outlines first quarter activity by ARC's key operating areas. First quarter 2017 operating expenses of $69.9 million ($6.74 per boe) were relatively unchanged from the fourth quarter of 2016. ARC expects full-year 2017 operating expenses to trend towards guidance as the year progresses and fall within the guided range of $6.30 to $6.70 per boe. ARC closed the first quarter with a strong balance sheet with $501.4 million of net debt outstanding at March 31, 2017, and had additional cash and credit capacity of approximately $1.7 billion, taking into account ARC's working capital surplus. The net debt to annualized funds from operations ratio was 0.7 times and net debt was approximately seven per cent of ARC's total capitalization at the end of the first quarter of 2017. ARC expects to outspend its cash flows over the course of the next two to three years and return to target debt levels of between one and 1.5 times annualized funds from operations. The proceeds from the fourth quarter 2016 Saskatchewan asset disposition will be reinvested into profitable projects in the Montney. ARC's low debt levels allow greater certainty around the funding required to execute on our long-term business plans. The following economic, financial, and operational reviews provide further details to the above highlights. For additional commentary on ARC's first quarter 2017 financial and operating results, please view the following videos: "Myron's Minute", "Q1 2017 Financial Review", and "Q1 2017 Operations Review" available on ARC's website at www.arcresources.com. ARC is pleased to announce the following appointment: Mr. Armin Jahangiri has been promoted to the officer position of Vice President, Operations, and is responsible for overseeing the facilities, drilling and completions, health and safety, and environmental and regulatory teams at ARC. Prior to joining ARC in 2014 as a Manager of Operations, Mr. Jahangiri held positions with a major Canadian oil and gas producer and a global oilfield services company. He holds a Bachelor of Science in Mechanical Engineering from the Sharif University of Technology and a Master in Reservoir Engineering from the University of Calgary, and is a member of the Association of Professional Engineers and Geoscientists of Alberta. ARC congratulates Mr. Jahangiri and welcomes him to the executive team. ARC's first quarter 2017 financial and operating results were impacted by commodity prices and foreign exchange rates which are outlined in the following table. Global crude oil prices strengthened in the first quarter of 2017 as data signaled that compliance, by both OPEC and non-OPEC members, with the previously agreed-upon production cuts was higher than originally anticipated. This compliance helped to stabilize the global supply/demand imbalance. The WTI benchmark price averaged five per cent higher than the fourth quarter of 2016. ARC's crude oil price is primarily referenced to the mixed sweet crude stream price at Edmonton, which increased three per cent in the first quarter of 2017 compared to the fourth quarter of 2016. The differential between WTI and the mixed sweet crude stream price at Edmonton widened to average a discount of US$3.56 in the first quarter of 2017, 14 per cent more than the fourth quarter of 2016. US natural gas prices, referenced by the average NYMEX Henry Hub Last Day Settlement price, increased 11 per cent relative to the fourth quarter of 2016. Prices were driven higher by a tight supply/demand balance caused by a combination of rising base load demand and unchanged US production. ARC's realized natural gas price is diversified to multiple sales points including AECO, Station 2, and Chicago hubs. The AECO hub price increased five per cent in the first quarter of 2017 relative to the fourth quarter of 2016. Despite strong local demand, AECO basis differentials remain wide due to the high marginal transportation costs of alleviating the Western Canadian Sedimentary Basin of its excess supply. The Canadian dollar remained range-bound relative to the US dollar during the first quarter of 2017, averaging Cdn$/US$1.32 (US$/Cdn$0.76). The mild strengthening in the Canadian dollar relative to the US dollar in the first quarter of 2017 compared to the fourth quarter of 2016 was partially driven by higher commodity prices. ARC recorded net income of $142.5 million ($0.40 per share) in the first quarter of 2017 compared to net income of $167.0 million ($0.47 per share) in the fourth quarter of 2016. The disposition of certain non-core assets, including ARC's Saskatchewan position in the fourth quarter of 2016, resulted in the reversal of previously-recorded impairment charges totaling $63.1 million, as well as the recognition of a gain on disposal of petroleum and natural gas properties of $196.0 million in the prior period. In the first quarter of 2017, reduced operating netbacks of $18.2 million, driven primarily by lower crude oil production volumes, also served to decrease net income in the first quarter of 2017 relative to the fourth quarter of 2016. Partially offsetting these decreases to net income were increased gains of $201.0 million recognized on ARC's risk management contracts, an increase in foreign exchange gains of $31.8 million, and reduced income taxes of $18.9 million. First quarter 2017 net income of $142.5 million ($0.40 per share) was $78.4 million higher than first quarter 2016 net income. Increased operating netbacks of $69.4 million, driven primarily by improved commodity prices, as well as increased gains on risk management contracts of $73.4 million served to improve earnings over the prior period. Reduced general and administrative ("G&A") expenses of $20.1 million due to recoveries recorded on ARC's share-based compensation plans also contributed to the year-over-year increase in net income. These increases to earnings were partially offset by reduced foreign exchange gains of $58.9 million, and higher income taxes of $49.5 million resulting from improved commodity prices and lost income tax pools. ARC's first quarter 2017 funds from operations of $177.2 million ($0.50 per share) decreased six per cent from fourth quarter 2016 funds from operations of $188.5 million ($0.53 per share). The most significant drivers in the quarter-over-quarter decrease in funds from operations were lower crude oil production and reduced realized gains on hedging contracts. These factors were partially offset by lower current income taxes, higher crude oil prices, lower operating expenses, and lower G&A expenses driven primarily by recoveries recorded on ARC's share-based compensation plans due to the decrease in ARC's share price. First quarter 2017 funds from operations of $177.2 million ($0.50 per share) was 18 per cent higher than first quarter 2016 funds from operations. Improved commodity prices and reduced G&A expenses increased funds from operations relative to the prior year. These items were partially offset by decreased crude oil production and lower realized gains on ARC's risk management contracts. Increased current income taxes and higher royalty expenses also served to decrease funds from operations. The following table details the change in funds from operations for the first quarter of 2017 relative to the fourth quarter of 2016 and to the first quarter of 2016. ARC's first quarter 2017 operating netbacks, before hedging, of $17.98 per boe decreased four per cent relative to the fourth quarter of 2016, and first quarter 2017 operating netbacks, after hedging, of $20.34 per boe decreased seven per cent relative to the fourth quarter of 2016. Lower operating netbacks were predominantly due to an increase in natural gas production as a percentage of total corporate production, resulting in a lower average realized commodity price. ARC's first quarter 2017 operating netbacks, before hedging, of $17.98 per boe increased 72 per cent from the first quarter of 2016, and first quarter 2017 operating netbacks, after hedging, of $20.34 per boe increased 23 per cent relative to the first quarter of 2016. Higher operating netbacks were predominantly due to strengthening crude oil and natural gas prices. ARC's first quarter 2017 total corporate royalty rate of 8.4 per cent ($2.49 per boe) increased slightly from 8.0 per cent ($2.47 per boe) in the fourth quarter of 2016 and 7.9 per cent ($1.62 per boe) in the first quarter of 2016, reflecting the effect of increased commodity prices on royalty rates. First quarter 2017 royalty expenses on an absolute basis were $25.8 million. First quarter 2017 transportation expenses of $2.42 per boe increased four per cent from the fourth quarter of 2016 and increased 10 per cent relative to the first quarter of 2016 as a result of an aggregate increase in tolls for natural gas on third-party pipelines. First quarter 2017 transportation expenses on an absolute basis were $25.0 million. First quarter 2017 operating expenses of $6.74 per boe were relatively unchanged from the fourth quarter of 2016, and increased 10 per cent relative to the first quarter of 2016 due to accelerated maintenance and workover activities in advance of spring break-up. First quarter 2017 operating expenses on an absolute basis were $69.9 million. ARC realized cash gains on natural gas hedging contracts of $25.4 million during the first quarter of 2017. Approximately 30 per cent of natural gas production was hedged at NYMEX Henry Hub with an average floor price of US$4.00 per MMBtu during the first quarter of 2017, while market prices averaged US$3.32 per MMBtu. Approximately 10 per cent of natural gas production was hedged at AECO with an average swap price of Cdn$2.64 per GJ during the first quarter of 2017, while market prices averaged Cdn$2.79 per GJ. ARC has hedged approximately 234,600 MMBtu per day of natural gas production for 2017 and a portion of natural gas production is hedged for the period 2018 through 2021. ARC's natural gas hedging portfolio also includes AECO basis swap contracts which fix the AECO price received relative to the NYMEX Henry Hub price on a portion of its natural gas volumes for 2017 through 2021. ARC's natural gas hedges support long-term development economics for ARC's significant natural gas resource base. Details relating to ARC's natural gas hedged volumes and prices for the period 2017 through 2021 are outlined in the table that follows. ARC incurred cash losses of $0.5 million on crude oil hedging contracts during the first quarter of 2017. ARC currently has 14,000 barrels per day of crude oil production hedged with collars and swaps for 2017 and has additional crude oil production hedged for 2018 and 2019. ARC's crude oil hedging portfolio also includes MSW basis swap contracts for 2017 and 2018, fixing the discount between WTI and the mixed sweet crude stream price at Edmonton. Details relating to ARC's crude oil hedged volumes and prices for the period 2017 through 2019 are outlined in the table that follows. ARC has hedge contracts in place, at levels that support ARC's long-term business plans, to protect prices on a portion of natural gas volumes for 2017 through 2021 and crude oil volumes for 2017 through 2019. ARC will continue to take positions in natural gas, crude oil, foreign exchange rates, power and interest rates, as appropriate, to provide greater certainty over future cash flows. For a complete listing and terms of ARC's hedging contracts as at March 31, 2017, see Note 9 "Financial Instruments and Market Risk Management" in ARC's financial statements for the three months ended March 31, 2017. ARC invested $255.2 million of capital, before land and net property acquisitions and dispositions, in the first quarter of 2017, including drilling 46 operated wells (29 crude oil wells, 15 liquids-rich natural gas wells, and two natural gas wells). Capital expenditures in the period included infrastructure investment at Dawson Phase III and Parkland/Tower Phase III, drilling and completions activities throughout the Montney and the Cardium, and development activities directed at the continued evaluation of the Lower Montney. Approximately 85 per cent of capital investment in the first quarter was invested in ARC's low-cost, high-value Montney assets. First quarter 2017 production was 115,129 boe per day, with natural gas production of 496 MMcf per day (72 per cent of total production) and crude oil and liquids production of 32,427 barrels per day (28 per cent of total production). First quarter 2017 average daily production was two per cent lower relative to the fourth quarter of 2016, primarily driven by the disposition of ARC's Saskatchewan assets in late 2016. This was partially offset by an increase in production at Dawson due to production returning from third-party pipeline outages experienced in the fourth quarter, as well as an increase in production at Ante Creek from new wells that came on-stream late in 2016 and from optimization activities performed in the period. ARC continues to safely shut in offset pads when nearby completion activities are taking place. First quarter 2017 production was seven per cent lower than the first quarter of 2016 primarily due to the 8,800 boe per day of production that was divested throughout 2016 as part of ARC's portfolio rationalization efforts. ARC currently has a land position of approximately 1,200 net Montney sections, and Montney production represented approximately 85 per cent of corporate production in the first quarter of 2017. Excellent operating and capital efficiencies are supported by operating our own facilities, allowing ARC greater control over costs and pace of development. We continue to optimize well designs and maximize well value, pursue new technologies, and partner with service providers to preserve our low cost structure. ARC actively monitors market conditions and maintains a marketing strategy that diversifies ARC's sales portfolio and ensures that production gets to market at optimal pricing. ARC has been de-risking future development projects with appraisal and development drilling, as well as geologic and engineering studies to create optionality in future project selection across all of our Montney and Cardium land base. ARC's land position in the multi-layer Montney has considerable future delineation opportunities and development potential. The Lower Montney zone is currently being de-risked across ARC's Montney acreage as we progress our understanding of the zone and the potential for future commercial development. At Dawson, the Lower Montney zone has shown high liquids yields, with wells currently producing an average of approximately 40 barrels per MMcf of free condensate. This liquids content is driving strong economics and is indicating significant upside across ARC's Dawson lands. In addition to Dawson, appraisal of the Lower Montney has been a focus at Parkland/Tower, Sunrise, and Pouce Coupe. Future development potential has also been identified at Attachie. ARC's 2017 capital program includes the drilling of 12 Lower Montney wells across ARC's Montney acreage. Evaluation and monitoring of production results will be ongoing as ARC optimizes well designs. The long-term growth opportunities from the Lower Montney zone will provide ARC with strategic optionality in the future, and increases the overall depth of ARC's portfolio. The Dawson Montney play is the foundation of ARC's low-cost natural gas business, where ARC has a land position of 137 net Montney sections. Dawson production averaged 178 MMcf per day of natural gas and 1,300 barrels per day of condensate and liquids during the first quarter of 2017, an increase of eight per cent from the fourth quarter of 2016. The increase in production was the result of production returning from line pressure issues experienced on third-party pipelines in the prior quarter, partially offset by the safe shut-in of offset pads due to nearby completion activities. The Dawson play delivers strong economics and significant cash flow at current natural gas prices, due to excellent capital efficiencies, exceptional well results, and low operating expenses. ARC invested $78 million at Dawson in the first quarter of 2017. Capital investment was directed to construction of Dawson Phase III and associated infrastructure, drilling eight liquids-rich natural gas wells and two natural gas wells, and completing nine wells. Two of the wells drilled in the quarter targeted the Lower Montney zone, furthering ARC's broader evaluation of the zone's potential across our Montney acreage. Drilling efficiencies continue to be realized at Dawson, with ARC reducing the average number of drilling days per well by approximately 50 per cent since 2015 to an average of eight days. Physical construction of the Dawson Phase III gas processing and liquids-handling facility continues with the majority of mechanical work now complete. Over 80 kilometers of pipe was installed in the first quarter of 2017, including the gas gathering systems for the facility and the sales lines that will allow for dual-connectivity to third-party pipeline infrastructure and provide increased takeaway optionality. Construction of the facility continues as ARC prepares for upcoming commissioning activities. The first stage of Dawson Phase III is designed to process 90 MMcf per day of natural gas and handle up to 7,500 barrels per day of liquids (approximately 50 per cent condensate-handling). The wells that will be required to initially fill the plant have been drilled and completions of these wells are underway. ARC expects production levels at Dawson to increase through the second half of 2017. ARC has incorporated extra liquids-handling capacity in the Phase III design to be able to handle free liquids and a richer gas production from the Lower Montney in the future. Regulatory approval has been received for a Phase IV Dawson facility expansion, for which pre-planning has commenced. ARC's Parkland/Tower property, located in the Montney play in northeast British Columbia, consists of 57 net Montney sections at Tower, which produce predominantly light crude oil and condensate with liquids-rich associated gas; and 37 net Montney sections at Parkland, which produce liquids-rich natural gas and dry gas. With contiguous lands, these areas share ARC-operated infrastructure and processing capacity. Parkland/Tower first quarter 2017 production averaged 25,200 boe per day (35 per cent crude oil and liquids and 65 per cent natural gas), unchanged from the fourth quarter of 2016. Capital investment at Parkland/Tower was approximately $80 million in the first quarter of 2017 and included the drilling of 15 crude oil wells and four liquids-rich natural gas wells, completion of six wells, and initial investments for the Parkland/Tower Phase III facility expansion. The evaluation of a Phase III expansion of the Parkland/Tower gas processing and liquids-handling facility is now underway. The facility expansion has received regulatory approval and is able to come on-stream in late 2018. Long-term takeaway capacity for production associated with the facility expansion has been secured. ARC continues to evaluate and progress its understanding of the Parkland/Tower area, with a focus on reducing development costs and refining well designs for optimized efficiency. Gas lifts have been installed on producing wells across the field in order to improve production. Well performance at Tower continues to be exceptional, ranking amongst the top oil wells in western Canada. ARC will continue to optimize well designs in the area to ensure best-in-class capital efficiencies and that the optimal exploitation strategy is achieved. ARC plans to ramp up Parkland/Tower production to current facility capacity through 2017. ARC has a land position of 32 net Montney sections at Sunrise, a dry natural gas Montney play in northeast British Columbia with multi-layer development. With a significant natural gas resource base, high well deliverability, low capital requirements, and low operating expenses, Sunrise continues to create significant value and superior full-cycle economics. First quarter 2017 Sunrise production was approximately 136 MMcf per day of natural gas, unchanged from the fourth quarter of 2016, as ARC continues to see strong well performance and longer stabilized production across the area. ARC invested approximately $1 million on capital activities at Sunrise in the first quarter of 2017, directed at front-end engineering and design work for the second stage of the existing Sunrise gas processing facility. The facility expansion, which includes the repatriation of production currently flowing through a third-party facility, is expected to come on-stream mid-year 2019. With increased control of ARC's Sunrise production volumes, operating costs in the area will be significantly reduced once the facility comes on-stream. Long-term takeaway capacity for production associated with the facility expansion has been secured. With strong well performance, ARC expects to maintain production at current facility capacity at Sunrise throughout 2017, and has plans to drill five Lower Montney wells in 2017 to maintain Sunrise facility capacities in 2018. ARC's Attachie property is a highly prospective, Montney crude oil and liquids-rich natural gas exploration play located in northeast British Columbia, where ARC has a land position of 286 net Montney sections. ARC invested approximately $15 million on pilot activities on the west side of Attachie in the first quarter of 2017, including the drilling and completion of two liquids-rich natural gas wells. ARC will continue to build on the success of existing pilots in the area over the course of 2017, and will optimize and monitor production results in the area. ARC is currently producing through third-party infrastructure while long-term infrastructure requirements are being assessed. ARC has a land position of 381 net sections at Ante Creek, a Montney crude oil play in northern Alberta that provides significant cash flow and has substantial future development potential. First quarter 2017 Ante Creek production averaged 17,400 boe per day (approximately 45 per cent crude oil and liquids), an eight per cent increase from the fourth quarter of 2016. Increased production in the area is attributed to new wells that came on-stream late in the fourth quarter of 2016, as well as from optimization activities performed in the period. ARC invested approximately $29 million in the first quarter of 2017, including drilling six crude oil wells and completing four wells. Alongside increased capital activity in 2017, ARC will continue to evaluate and optimize recent changes in well design. Base production continues to perform well at Ante Creek, demonstrating the effectiveness of ARC's ongoing optimization activities and the overall strength of the asset base. ARC's Pembina Cardium assets provide high-quality light oil production, generate strong operating netbacks, and feature favourable half-cycle economics, with required infrastructure already in place. ARC has a land position of 217 net Cardium sections in Pembina, where production averaged approximately 11,000 boe per day (approximately 80 per cent light oil and liquids) in the first quarter of 2017, unchanged from the fourth quarter of 2016. The addition of new production from recent development activities in the area has temporarily been restricted in order to perform pipeline integrity reviews. ARC invested approximately $27 million in capital activities in the first quarter of 2017, including drilling eight crude oil wells and completing 12 wells. ARC continues to focus on capital and operating efficiencies with its drilling and completion designs in Pembina, driving an increase in overall profitability for the area. Optimizing production, converting horizontal injectors, and waterflood management continue to be a core component of operations at Pembina. ARC's Redwater region in Alberta produces high-quality crude oil. First quarter 2017 production averaged approximately 3,100 boe per day of light oil, unchanged from the fourth quarter of 2016. Capital investment for the first quarter of 2017 at Redwater was approximately $2 million. As a dividend-paying corporation, ARC declares monthly dividends to its shareholders. ARC continually assesses dividend levels in light of commodity prices, capital expenditure programs, and production volumes to ensure that dividends are in line with ARC's long-term strategy and objectives. ARC declared dividends totaling $0.15 per share for the first quarter of 2017. The Board of Directors previously confirmed a dividend of $0.05 per share for April 2017, payable on May 15, 2017, and has conditionally declared a monthly dividend of $0.05 per share for May 2017 through August 2017, payable as follows: On February 8, 2017, ARC's Board of Directors approved the elimination of the Dividend Reinvestment Plan ("DRIP") and Stock Dividend Program ("SDP"), which came into effect for the March 2017 dividend. Shareholders that were enrolled in either program now automatically receive dividend payments in the form of cash. During the first quarter of 2017, ARC declared dividends of $53.1 million, of which $0.4 million was issued in the form of common shares under the SDP and $2.6 million was reinvested into ARC shares through the DRIP. Prior to elimination, the DRIP and SDP were a source of funding for ARC's capital programs. The dividends have been designated as eligible dividends under the Income Tax Act (Canada). The declaration of the dividends is conditional upon confirmation by news release and is subject to any further resolution of the Board of Directors. Dividends are subject to change in accordance with ARC's dividend policy depending on a variety of factors and conditions existing from time-to-time, including fluctuations in commodity prices, production levels, capital expenditure requirements, debt service requirements, operating expenses, royalty burdens, foreign exchange rates and the satisfaction of solvency tests imposed by the Business Corporations Act (Alberta) for the declaration and payment of dividends. Shareholders, wherever resident, are encouraged to consult their own tax advisors regarding the tax consequences to them of receiving cash dividends. ARC plans to file a Form 15F with the United States Securities and Exchange Commission (the "Commission" or "SEC") to voluntarily terminate the registration of its securities and its reporting obligations under Section 13(a) and Section 15(d) of the United States Securities Exchange Act of 1934, as amended ("Exchange Act"). ARC's Exchange Act reporting obligations will be immediately suspended upon filing the Form 15F. The termination of ARC's registration and of its reporting obligations under Section 13(a) and Section 15(d) of the Exchange Act is expected to be effective 90 days after filing. ARC is current with all of its reporting requirements under the Exchange Act and is not listed on any US exchange. In determining to deregister, ARC's Board of Directors considered the administrative burden and costs associated with being a US reporting company and believe that the costs outweigh the benefits. ARC will continue to comply with its Canadian continuous disclosure obligations and its common shares will continue to trade on the Toronto Stock Exchange. The foundation of ARC's business strategy is risk-managed value creation. High-quality assets, operational excellence, financial strength, and top talent are the key principles underpinning ARC's business strategy. ARC's goal is to create shareholder value in the form of regular dividends and anticipated capital appreciation relating to profitable future growth. ARC's Board of Directors has approved a $750 million capital program for 2017 that focuses on long-term value creation through the development of ARC's crude oil, liquids-rich natural gas, and natural gas Montney assets and ARC's crude oil Cardium assets. The planned budget includes infrastructure investment at Dawson, Parkland/Tower, and Sunrise, as well as strategic investment in the Lower Montney. The capital plan will allow ARC to sustain its base businesses and optimize capital and operating efficiencies across ARC's focused asset base. As planned, ARC's second quarter 2017 production will be lower than the first quarter by a few per cent due to planned maintenance activities and anticipated spring break-up impacts to production and field operations. As commissioning activities for the Dawson Phase III gas processing and liquids-handling facility are initiated in the second quarter of 2017, ARC expects production levels at Dawson to increase through the second half of the year. Full-year 2017 annual production is expected to be in the range of 118,000 to 124,000 boe per day, and ARC anticipates its 2017 exit rate to be in excess of 130,000 boe per day. Ongoing commodity price volatility may affect ARC's funds from operations and over the long term, profitability of capital programs. As continued volatility is expected, ARC will continue to take steps to mitigate these risks, including managing an active hedging program, focusing on capital and operating efficiencies, and protecting its strong financial position, with a targeted net debt to annualized funds from operations ratio of between one and 1.5 times. ARC will continue to screen projects for profitability in a disciplined manner and will adjust spending and the pace of development, if required, to ensure balance sheet strength is protected. The 2017 capital budget excludes land purchases and property acquisitions or dispositions. ARC will continue to consolidate its land position and grow its presence in key areas through land purchases and property acquisitions. ARC evaluates its asset portfolio on a continuous basis with a view to selling assets that do not meet ARC's investment guidelines. Through the normal course of business, acquisitions and dispositions may occur that would impact the expected production for the year. ARC's 2017 guidance is based on full-year 2017 estimates; certain variances exist between 2017 year-to-date actual results and 2017 full-year guidance estimates due to the cyclical and seasonal nature of operations. ARC expects full-year 2017 actual results to closely approximate guidance. On a per boe basis, ARC's first quarter 2017 operating expenses were slightly above the 2017 guidance range due to accelerated maintenance and workover activities in advance of spring break-up. ARC expects full-year operating expenses to trend towards guidance as the year progresses as additional volumes with lower relative costs to operate are brought on-stream in the second half of the year. ARC's first quarter 2017 G&A expenses before share-based compensation were above the 2017 guidance range due primarily to an increase in compensation expenses associated with reducing the size of ARC's workforce. G&A expenses relating to share-based compensation plans were below the 2017 guidance range due to recoveries recorded on ARC's share-based plans due to the decrease in ARC's share price. ARC expects full-year 2017 G&A expenses before share-based compensation to trend towards guidance as the year progresses. ARC's full-year 2017 guidance estimates and a review of 2017 year-to-date actual results are outlined in the following table. This news release contains certain forward-looking information and statements within the meaning of applicable securities laws. The use of any of the words "expect," "anticipate," "continue," "estimate," "objective," "ongoing," "may," "will," "project," "should," "believe," "plans," "intends," "strategy" and similar expressions are intended to identify forward-looking information or statements. In particular, but without limiting the foregoing, this news release contains forward-looking information and statements pertaining to the following: guidance as to the capital expenditure plans of ARC in 2017 and its 2017 production, and operating expenses under the heading "Financial and Operating Highlights", as to its views on future commodity prices under the heading "Economic Environment", as to its risk management plans for 2017 and beyond under the heading "Risk Management", as to its production, exploration and development plans, and capital expenditures for 2017 and beyond under the heading "Operational Review", as to its plans in relation to future dividend levels under the heading "Dividends", as to termination of ARC's Exchange Act reporting obligations under the heading "United States Securities and Exchange Commission Deregistration", and all matters in respect of 2017 guidance under the heading "Outlook". The forward-looking information and statements contained in this news release reflect material factors and expectations and assumptions of ARC including, without limitation: that ARC will continue to conduct its operations in a manner consistent with past operations; the general continuance of current industry conditions; the continuance of existing (and in certain circumstances, the implementation of proposed) tax, royalty and regulatory regimes; the accuracy of the estimates of ARC's reserves and resource volumes; certain commodity price and other cost assumptions; and the continued availability of adequate debt and equity financing, funds from operations to fund its planned expenditures, and that the United States Securities and Exchange Commission will not object to ARC's termination of its Exchange Act reporting obligations. ARC believes the material factors, expectations and assumptions reflected in the forward-looking information and statements are reasonable but no assurance can be given that these factors, expectations and assumptions will prove to be correct. The forward-looking information and statements included in this news release are not guarantees of future performance and should not be unduly relied upon. 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Bacteriorhodopsin (bR) molecules were utilized as light-driven proton pumps for green as well as effective reduction of single-layer graphene oxide (GO) sheets. The bR molecules and graphene sheets were separated from each other in an aqueous environment by using a polytetrafluoroethylene membrane filter, in order to prevent their direct interactions (including attachment of the bR molecules onto the GO). Although reduction of GO using hydrazine or bR showed similar deoxygenation levels (based on X-ray photoelectron spectroscopy), the former resulted in formation of CAN bonds which can substantially decrease the electrical conductivity of the reduced sheets. The electrical characteristics of the singlelayer graphene sheets were studied by recording current-voltage curves of the sheets located between two Au electrodes on a SiO2 (300 nm)/Si (100) substrate. The electrical conductivity of the bR-reduced graphene oxide (rGO) sheets was found about one order of magnitude better than that of hydrazine-rGO sheets. The excellent electrical conductivity of the bR-rGO sheets (with sheet resistance of ∼7.1 × 104 X/sq) was assigned to the effective deoxygenation (without formation of any CAN bonds) and better restoration of the graphitic structure of the GO sheets, using the protons pumped by the bR molecules. © 2014 Elsevier Ltd. All rights reserved.


Akhavan O.,Sharif University of Technology
Carbon | Year: 2011

Graphene oxide platelets synthesized by using a chemical exfoliation method were dispersed in a suspension of ZnO nanoparticles to fabricate ZnO/graphene oxide composite. Formation of graphene oxide platelets (with average thickness of ∼0.8 nm) hybridized by ZnO nanoparticles (with average diameter of ∼20 nm) was investigated. The 2D band in Raman spectrum confirmed formation of single-layer graphene oxides. The gradual photocatalytic reduction of the graphene oxide sheets in the ZnO/graphene oxide suspension of ethanol was studied by using X-ray photoelectron spectroscopy for different ultra violet (UV)-visible irradiation times. After 2 h irradiation, the relative concentration of the C-OH, CO and OC-OH bonds showed nearly 80% reduction relative to the corresponding concentrations before irradiation. The chemical reduction was accompanied by variations in the optical absorption of the ZnO/graphene (oxide) suspension, as its color changed from light brown to black. The current-voltage measurement showed that electrical sheets resistance of the ZnO/graphene oxide sheets decreased by increasing the irradiation time. Therefore, the ZnO nanoparticles in the ZnO/graphene oxide composite could be applied in gradual chemical reduction and consequently tuning the electrical conductivity of the graphene oxide platelets by variation of UV irradiation time in a photocatalytic process. © 2010 Elsevier Ltd. All rights reserved.


Tavazoei M.S.,Sharif University of Technology
Automatica | Year: 2010

In this paper, it is shown that the fractional-order derivatives of a periodic function with a specific period cannot be a periodic function with the same period. The fractional-order derivative considered here can be obtained based on each of the well-known definitions Grunwald-Letnikov definition, Riemann-Liouville definition and Caputo definition. This concluded point confirms the result of a recently published work proving the non-existence of periodic solutions in a class of fractional-order models. Also, based on this point it can be easily proved the absence of periodic responses in a wider class of fractional-order models. Finally, some examples are presented to show the applicability of the paper achievements in the solution analysis of fractional-order systems. © 2010 Elsevier Ltd. All rights reserved.


Akhavan O.,Sharif University of Technology
Carbon | Year: 2010

Graphene thin films with very low concentration of oxygen-containing functional groups were produced by reduction of graphene oxide nanosheets (prepared by using a chemical exfoliation) in a reducing environment and using two different heat treatment procedures (called one and two-step heat treatment procedures). The effects of heat treatment procedure and temperature on thickness variation of graphene platelets and also on reduction of the oxygen-containing functional groups of the graphene oxide nanosheets were studied by atomic force microscopy and X-ray photoelectron spectroscopy. While formation of the thin films composed of single-layer graphene nanosheets with minimum thickness of 0.37 nm and nearly without any functional group bonds was observed at the high temperature of 1000 °C in the one-step reducing procedure, similar high quality graphene thin films were obtained at the lower temperature of 500 °C in our two-step reducing temperature. The results also indicated possibility of efficient reduction of the graphene oxide thin films at even lower heat treatment temperatures (≤500 °C). © 2009 Elsevier Ltd. All rights reserved.


Akhavan O.,Sharif University of Technology
ACS Nano | Year: 2010

Local photodegradation of graphene oxide sheets at the tip of ZnO nanorods was used to achieve semiconducting graphene nanomeshes. The chemically exfoliated graphene oxide sheets, with a thickness of ∼0.9 nm, were deposited on quartz substrates. Vertically aligned ZnO nanorod arrays with diameters of 140 nm and lengths of <1 μm were grown on a glass substrate by using a hydrothermal method. The graphene oxide sheets were physically attached to the tip of the ZnO nanorods by assembling the sheets on the nanorods. UV-assisted photodegradation of the graphene oxide sheets (with dimension of ∼5 × 5 μm) at a contact place with the ZnO nanorods resulted in graphene nanomeshes with a pore size of ∼200 nm. The graphene nanomeshes prepared by using the photocatalytic property of the ZnO nanorods contained smaller oxygen-containing carbonaceous bonds and higher defects as compared to the as-prepared graphene oxide sheets. When chemical reduction of the graphene nanomeshes by hydrazine was used, the oxygen bonds of the nanomeshes more decreased while their graphitization increased. Based on X-ray photoelectron spectroscopy at low binding energies, the graphene nanomeshes reduced by hydrazine exhibited as a broad sheet a p-type semiconductor with an ∼1.2 eV energy gap between the valence band and the Fermi level. © 2010 American Chemical Society.


Akhavan O.,Sharif University of Technology | Ghaderi E.,Sharif University of Technology
ACS Nano | Year: 2010

Bacterial toxicity of graphene nanosheets in the form of graphene nanowalls deposited on stainless steel substrates was investigated for both Gram-positive and Gram-negative models of bacteria. The graphene oxide nanowalls were obtained by electrophoretic deposition of Mg2+-graphene oxide nanosheets synthesized by a chemical exfoliation method. On the basis of measuring the efflux of cytoplasmic materials of the bacteria, it was found that the cell membrane damage of the bacteria caused by direct contact of the bacteria with the extremely sharp edges of the nanowalls was the effective mechanism in the bacterial inactivation. In this regard, the Gram-negative Escherichia coli bacteria with an outer membrane were more resistant to the cell membrane damage caused by the nanowalls than the Gram-positive Staphylococcus aureus lacking the outer membrane. Moreover, the graphene oxide nanowalls reduced by hydrazine were more toxic to the bacteria than the unreduced graphene oxide nanowalls. The better antibacterial activity of the reduced nanowalls was assigned to the better charge transfer between the bacteria and the more sharpened edges of the reduced nanowalls, during the contact interaction. © 2010 American Chemical Society.


Akhavan O.,Sharif University of Technology | Ghaderi E.,Sharif University of Technology
Small | Year: 2013

Reduced graphene oxide nanomesh (rGONM), as one of the recent structures of graphene with a surprisingly strong near-infrared (NIR) absorption, is used for achieving ultraefficient photothermal therapy. First, by using TiO2 nanoparticles, graphene oxide nanoplatelets (GONPs) are transformed into GONMs through photocatalytic degradation. Then rGONMs functionalized by polyethylene glycol (PEG), arginine-glycine-aspartic acid (RGD)-based peptide, and cyanine 7 (Cy7) are utilized for in vivo tumor targeting and fluorescence imaging of human glioblastoma U87MG tumors having ανβ3 integrin receptors, in mouse models. The rGONM-PEG suspension (1 μg mL -1) exhibits about 4.2- and 22.4-fold higher NIR absorption at 808 nm than rGONP-PEG and graphene oxide (GO) with lateral dimensions of ≈60 nm and ≈2 μm. In vivo fluorescence imaging demonstrates high selective tumor uptake of rGONM-PEG-Cy7-RGD in mice bearing U87MG cells. The excellent NIR absorbance and tumor targeting of rGONM-PEG-Cy7-RGD results in an ultraefficient photothermal therapy (100% tumor elimination 48 h after intravenous injection of an ultralow concentration (10 μg mL-1) of rGONM-PEG-Cy7-RGD followed by irradiation with an ultralow laser power (0.1 W cm-2) for 7 min), whereas the corresponding rGO- and rGONP-based composites do not present remarkable treatments under the same conditions. All the mice treated by rGONM-PEG-Cy7-RGD survived over 100 days, whereas the mice treated by other usual rGO-based composites were dead before 38 days. The results introduce rGONM as one of the most promising nanomaterials in developing highly desired ultraefficient photothermal therapy. Reduced graphene oxide nanomesh (rGONM) functionalized by polyethylene glycol (PEG), arginine-glycine-aspartic acid (RGD)-based peptide, and cyanine 7 (Cy7) is utilized for in vivo tumor targeting and fluorescence imaging of human glioblastoma tumors in mice. Simultaneous application of an ultralow concentration of injected rGO-based composite and an ultralow near-infrared (NIR) laser power provide tumor ablation with 100% efficiency. Copyright © 2013 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.


Asghari M.,Sharif University of Technology
International Journal of Engineering Science | Year: 2012

The couple stress theory is a non-classical continuum theory which is capable to capture size effects in small-scale structures. This property makes it appropriate for modeling the structures in micron and sub-micron scales. The purpose of this paper is the derivation of the governing motion equations and boundary conditions for the geometrically nonlinear micro-plates with arbitrary shapes based on the modified version of the couple stress theory. The consistent boundary conditions are provided at smooth parts of the plate periphery and also at the sharp corners of the periphery using variational approach. © 2011 Elsevier Ltd. All rights reserved.


Tavazoei M.S.,Sharif University of Technology
IEEE Industrial Electronics Magazine | Year: 2012

Proportional-integral (PI) controllers are the most common form of feedback used in industrial applications today [1][3]. The use of proportional and integral feedback also has a long history of practical applications [4]. For example, in the middle of the 18th century, centrifugal governors as the proportional feedback were applied to regulate the speed of windmills [5]. By the 19th century, it was known that using integral feedback could remove the offsets appearing in working with governors [6]. At present, PI control, still a very basic form of feedback, is also one of the first solutions often considered in the control of industrial systems [7]. On the other hand, in some applications, using the PI controller in its traditional form may not be satisfactory, and a more advanced controller is needed to achieve control objectives. In such cases, modified versions of the PI controller have been proposed to enhance the controller's performance. The fractional-order PI controller is one of these modified versions, and it is attracting increased interest in control system design uses [8], [9]. The idea of using such a controller originated with fractional calculus, known as a generalization for classical calculus [10]. The following section presents a brief review of recent fractional calculus applications in control system design. © 2011 IEEE.

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