金月芽期刊網

和“oil”相關的論文

  • MRC油井穩態產能計算與對比 相關:最大儲層接觸面積 多分支水平井 產能計算
  • 為提高單井產量和油藏采收率,最大儲層接觸面積井(MRC,Maximum Reservoir Contact)越來越得到重視,但因井眼結構復雜,常規方法難以計算其產能.采用一種離散化半解析方法建立了MRC油井油藏滲流和井筒管流相耦合的穩態產能模型并運用迭代法求解.以某低滲油藏為例對MRC井產能進行了計算和對比,結果表明:MRC井產能受井筒間滲流干擾影響大,主井筒兩端泄油能力強,中間弱,在分支側鉆點處最弱;分支井筒從跟端到趾端泄油能力逐漸增強.MRC井單相油流IPR曲線與直井兩相流IPR曲線相似,應合理選擇生產壓差.井筒總長度一定時,三種MRC井產能差值均在10%內,且存在啟動壓力梯度時均會明顯降低.綜合考慮鉆完井工藝難度,推薦采用魚骨型多分支水平井實現MRC技術.
  • Structural strength analysis of high-pressureoil pump under fluid-solid coupling conditions 相關:High-pressure oil pump,
  • A high pressure oil pump has the advantages of compact structure, high working pressure, and it canstill maintain a high efficiency when it is working, so it is very important to analyze its structural strength. A high-pressure diesel monomer pump is the research object, it is using the finite element software Hypermesh to do thepretreatment of the finite element model, then using Fluent software to analysis the fluid finite element modelwhen it pumped oil to obtain the distribution of oil pressure in the process of pumping oil. And then it is usingAbaqus software to analyze the strength of the related components of the model through mapping oil pressure at thetime of the maximum oil pressure distribution to the model by the structure finite element interpolation, so it canobtain the stress distribution of each component. According to this coupling method to analyze the structuralstrength of high pressure oil pump, it provided the better guidance and reference for the design and optimization ofhigh pressure oil pump.
  • 波音飛機OIL CANNING損傷研究 相關:波音 OIL canning
  • 根據對波音飛機Oil Canning損傷處理的經驗,并參考波音手冊和相關文獻資料的說明,對波音飛機Oil Canning損傷的成因、特征和修理進行深入研究.旨在使業界同行能夠準確判斷此損傷并采取正確合理的處理措施.保障航空安全,提高維修效率。
  • 野艾蒿精油對雙斑螢葉甲成蟲的熏蒸活性及體內?活力的影響 相關:野艾蒿精油 雙斑螢葉甲 熏蒸活性
  • 測定了野艾蒿精油對雙斑螢葉甲成蟲的熏蒸活性及體內幾種?活力的影響。結果表明:野艾蒿精油對雙斑螢葉甲成蟲具有明顯的熏蒸作用,野艾蒿精油劑量為10μL/L,處理8 h后校正死亡率為100%,在12 h后各精油處理組的校正死亡率均>80%。經熏蒸處理24 h后,野艾蒿精油對雙斑螢葉甲成蟲體內的乙?膽堿酯?(AChE)活力抑制作用明顯;對雙斑螢葉甲成蟲體內的α-乙酸?酯?(α-NACarE)活力、酸性磷酸酯?(ACP)活力、堿性磷酸酯?(ALP)活力均表現出抑制作用。各處理組的谷胱甘?-S-轉移?(GSTs)活力均高于對照組,野艾蒿精油對雙斑螢葉甲成蟲體內的谷胱甘?-S-轉移?(GSTs)活力表現出明顯的誘導作用。野艾蒿精油對雙斑螢葉甲成蟲體內過氧化物?(POD)活力的影響不明顯。
  • 11個胡麻新品系在景泰縣的引種初報 相關:胡麻 新品系 籽粒產量
  • 以胡麻品種隴亞10號為對照,在景泰縣對11個胡麻新品系進行了引種比較試驗,結果表明,在露地條播栽培條件下,籽粒產量以新品系97047-13最高,達2642.18 kg/hm^2,比對照品種隴亞10號增產122.61%;新品系2005×94301-14、隴亞10號(CK)含油率最高,均為39.72%;油產量也以新品系97047-13最高,達1043.66 kg/hm^2,比對照品種隴亞10號增產121.40%。初步認為胡麻新品系97047-13適宜在景泰縣露地種植。
  • VGP規范下艉軸承用環保油運行情況分析 相關:BIO-seal BIOLOGY OIL
  • 隨著美國環保局對船舶準入許可的2013 VGP頒布并強制執行,航運業日漸重視使用環保油,前沿造船企業在使用過程中遇到一些難題和困繞,本文據此進行分析可能產生問題的主要原因以及今后用環保油哪些方面需要注意和改進。
  • OIL 460紅外分光測油儀在飲食業油煙測試中的運用 相關:OIL 460紅外分光測油儀 飲食業油煙
  • 目的:解析OIL 460紅外分光測油儀在飲食業油煙測試中的具體運用。方法:依據GB 18483-2001《飲食業油煙排放標準》(試行),運用金屬濾筒吸收和紅外分光光度法測定了兩家餐飲業的油煙排放。結果/結論:通過實例測試和數據處理展示OIL 460紅外分光測油儀在飲食業油煙測試中的具體運用。
  • Status quo of China’s chemical fiber industry in the first three quarters in 2018 相關:INTERNATIONAL OIL PRICE
  • During the first three quarters in 2018,the international oil price rises and then appears a high shock,which forms a huge pressure on chemical fiber industry cost and pushes up the price of chemical fiber market.The growth of economic benefits of the whole industry boosts month by month on year-on-year basis,the profit and growth for the third quarter enhance on year-on-year basis,and the whole industry runs soundly.The running of various sub-industries is differentiated and continues the situation of polarization in the first half of the year.Besides,polyester and polyamide industries are in sound running condition,while viscose fiber,acrylic fibers and spandex industry run difficultly.
  • Fatty Acid Accumulation in Seeds of Three Seed Pumpkin Cultivars 相關:SEED PUMPKIN CUCURBITA
  • In the literature there are many reports on the composition and properties of pumpkin seed oil; however, few is known about the effect of different stages of seed development on various fatty acid profiles in developing seeds. The objective of this study was to provide the changes of various fatty acid accumulations in seed oil obtained from the seeds of three pumpkin varieties belonging to the species Cucurbita maxima and Cucurbita pepo. Unsaturated acids (oleic and linoleic) were dominant in various fatty acids, which constituted 38.9%-49.1% and 29.4%-42.7% of the total fatty acids at seed maturity for three pumpkin varieties, respectively, while other fatty acid concentrations except for palmitic acid all did not reach 10%. Different varieties exhibited greater effect on various fatty acid contents and the total fatty acid contents in the seeds of pumpkin rather than the species. On the whole, palmitic acid profiles of the seed oil in three varieties all followed the fluctuant decrease during all the stages of seed development, but palmitoleic acid and the total fatty acid profiles of the seed oil in three varieties were just the opposite. Stearic, oleic and linoleic acid profiles of the seed oil in three varieties all experienced the third pattern that fluctuated during all the stages of seed development, but no significant differences in these three fatty acid concentrations were found from the beginning to the end. Linolenic acid concentrations of three varieties were on the decline and ultimately close to zero. Myristic and arachidic acid profiles of the seed oil followed different trends in three varieties. Among them, myristic and arachidic acid profiles of the seed oil of Yinhui-1 fluctuated downward all the time until seed maturity, but those of 0238-1 and Jinhui-2 completely changed oppositely.
  • Composition and antimicrobial activity of Cistus munbyi essential oil: an endemic plant from Algeria 相關:ANTIMICROBIAL ACTIVITY CHEMICAL
  • The chemical composition and antimicrobial potential of Cistus munbyi essential oil were studied for the first time. GC and GC-MS analysis revealed 48 compounds representing 96.98% of the oil. Terpinen-4-ol (23.75%), meta-Cymene (17.30%), and Sabinene (12.38%) were the major constituents. Antimicrobial activity was evaluated against nine pathogens using the disc diffusion and broth micro-dilution methods. Results show that C.munbyi essential oil possesses strong antimicrobial activity against all strains, regardless if Gram-positive or Gramnegative bacteria, or yeast, with MICs values not exceeding 10 (mg/ml). In addition to its efficacy, C. munbyi essential oil has an unusual antimicrobial potency which is attributed to its specific chemical composition. Thus, findings presented here suggest that endemic C. munbyi contains a very interesting essential oil that may be valuable in several areas.