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1
Masni, Harbeng, and Pitri Yani. "BENTUK-BENTUK GAYA BAHASA SINDIRAN PADA FILM COMIC 8 KASINO KING PART 2 KARYA ANGGY UMBARA (ANALISIS STRUKTURAL)." Aksara: Jurnal Ilmiah Pendidikan Bahasa dan Sastra Indonesia 3, no. 2 (January 14, 2020): 196. http://dx.doi.org/10.33087/aksara.v3i2.133.
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The purpose of this study is to describe the forms of satirical language style in the film Comic 8 Casino King Part 2 by Anggy Umbara, which consists of three forms, namely irony, cynicism, and sarcasm. This research is a descriptive qualitative research with a structural approach. The primary data in this study are dialogues relating to satirical language style (irony, cynicism, sarcasm) contained in Comic 8 Movie Casino King Part 2 by Anggy Umbara. Secondary data in this study is a transcript of conversations from Comic 8 Casino King Part 2 by Anggy Umbara. Data were analyzed using the concepts of Tarigan, Keraf, and Purwandi. Based on the results of the analysis research it can be concluded that there are (1) the form of irony satire language style which is a subtle allusion, found in some data including the items, hair smells only, and longish Eh contained in seventeen quotes. (2) Cynicism satirical form of style which is a satire containing ridicule of sincerity and sincerity is found in some data including cowards, sissy, and killer forces contained in five quotations. (3) The form of sarcasm satire language style which is the most crude allusions found in some data including crazy, stupid, and use a little brain contained in eight quotations.
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Duran, Kevin. "Reviewer Acknowledgements for International Business Research, Vol. 10, No. 2." International Business Research 10, no. 2 (January 22, 2017): 180. http://dx.doi.org/10.5539/ibr.v10n2p180.
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International Business Research wishes to acknowledge the following individuals for their assistance with peer review of manuscripts for this issue. Their help and contributions in maintaining the quality of the journal are greatly appreciated.International Business Research is recruiting reviewers for the journal. If you are interested in becoming a reviewer, we welcome you to join us. Please find the application form and details at http://recruitment.ccsenet.org and e-mail the completed application form to ibr@ccsenet.org.Reviewers for Volume 10, Number 2 Ahmad Mahmoud Ahmad Zamil, King Saud University RCC, JordanAlireza Athari, Eastern Mediterranean University, IranAmran Awang, Head of Entrepreneurship Center, MalaysiaAshford C Chea, Benedict College, USABadar Nadeem Ashraf, East China Jiao Tong University, ChinaBenjamin James Inyang, University of Calabar, NigeriaBrian Sheehan, Thaksin University, AustraliaBruno Marsigalia, University of Casino and Southern Lazio, ItalyCristian Marian Barbu, “ARTIFEX” University, RomaniaFrancesco Ciampi, Florence University, ItalyGiuseppe Granata, University of Cassino and Southen Lazio, ItalyGiuseppe Russo, University of Cassino and Southern Lazio, ItalyHanna Trojanowska, Siedlce University, PolandHerald Monis, Milagres College, IndiaHuijian Dong, Pacific University, USAIvo De Loo, Nyenrode Business University, The NetherlandsIwona Gorzeń-Mitka, Czestochowa University of Technology, PolandJanusz Wielki, University of Business in Wroclaw, PolandL. Leo Franklin, Bharathidasn University, IndiaMansour Esmaeil Zaei, Panjab University, IndiaMarcelino José Jorge, Evandro Chagas Clinical Research Institute of Oswaldo Cruz Foundation, BrazilMaryam Ebrahimi, Azad University, IranMichaela Maria Schaffhauser-Linzatti, University of Vienna, AustriaMihaela Simionescu, Bucharest Academy of Economic Studies, RomanianModar Abdullatif, Middle East University, JordanMohamed Abdel Rahman Salih, Taibah University, Saudi ArabiaMohsen Malekalketab Khiabani, University Technology Malaysia, MalaysiaMongi Arfaoui, University of Monastir, TunisiaPascal Stiefenhofer, University of Brighton, UKProsper Senyo Koto, Dalhousie University, CanadaRadoslav Jankal, University of Zilina, SlovakiaRafiuddin Ahmed, James Cook University, AustraliaSang-Bing Tsai, University of Electronic Science and Technology of China, ChinaTu Anh Phan, CanTho University, Viet Nam
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Li, Zhong, Lai Bin Zhang, Fan Luo, Bai Ling Zhang, and Shu Ying Tan. "Mechanical Property Analysis of Materials and Application of Buttress Thread Buckle Marine Conductor." Advanced Materials Research 233-235 (May 2011): 2043–46. http://dx.doi.org/10.4028/www.scientific.net/amr.233-235.2043.
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At present, offshore drilling operations often use buttress thread casing as surface casing. The design conception of buttress thread casing comes from the offshore drilling’s demands and this kind of casing is mainly used as surface casing. This paper has taken material mechanical experiment, numerical simulation analysis and field test, the research results show that the various parameters of buttress thread casing fully complies with the drilling design requirements and the offshore oilfield production demands. This product can reduce drilling cost effectively, improve working efficiency and safety, and realize manufacture domestically. Meanwhile, the development of this project will fill the blank of the ERW (Electrical Resistance Weld) casing in CNOOC (China National Offshore Oil Corporation), and have a broad prospect of application.
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Long, Gang, Zhi Chuan Guan, and Hua Lin Liao. "Quantitative Risk Assessment of Oil Well Casing Strings under Non-Uniform External Loadings." Advanced Materials Research 785-786 (September 2013): 1036–40. http://dx.doi.org/10.4028/www.scientific.net/amr.785-786.1036.
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Considering the uncertainty and randomness of casing loadings and geometry sizes, performance parameters in deep wells, a kind of calculation method of probability distribution of casing external loading and collapse strength was established. Based on the Monte-Carlo method, the probability distribution of casing strength was simulated under non-uniform external loading conditions. With strength-load interference theory, the calculation method of casing safety reliability was obtained, which can analyzes reliabilities of different types of casing strings subjected different loadings in the dangerous section, and a regional relationship between casing reliabilities and safety factors is established. Results show that when casing reliabilities collapse strengths are in the range of 0.5-1.0, the related safety factors locate from 1.0 to 1.25. Safe reliability analysis can provide references for casing strength designs in deep and super deep wells.
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Gea, F. J., M. J. Navarro, and L. M. Suz. "First Report of Cladobotryum mycophilum Causing Cobweb on Cultivated King Oyster Mushroom in Spain." Plant Disease 95, no. 8 (August 2011): 1030. http://dx.doi.org/10.1094/pdis-03-11-0255.
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In 2010, symptoms of cobweb were observed on cultivated king oyster mushroom (Pleurotus eryngii) in Castilla-La Mancha (Spain) affecting 16% of the blocks of substrate cultivated. Cobweb appeared at the end of the crop cycle, first as small, white patches on the casing soil, subsequently spreading to the nearest king oyster mushroom by means of a fine gray-white mycelium, and eventually sporulating to produce masses of dry spores. The mycelium can quickly cover pinheads, stalks, pileus, and gills, eventually resulting in decomposition of the entire fruit body. Infected tissues of P. eryngii were plated onto potato dextrose agar (PDA) and the parasitic fungus was isolated. Fungal colonies consisted of abundant and cottony aerial mycelium spreading rapidly on PDA and red pigment spreading in the agar. Conidiogenous cells were 24 to 35 μm long, 3.5 to 5 μm wide basally, and tapered slightly to the tip. Conidia were cylindrical to narrowly ellipsoidal, 17 to 25 (-28) × 8 to 10 μm, and zero to three septate. Total DNA was extracted and the internal transcribed spacer (ITS) region of rDNA was amplified for one isolate using ITS1F/ITS4 primers (1,3). The amplicon was sequenced (GenBank Accession No. JF505112). BLAST analysis showed 100% similarity of the obtained ITS sequence with two sequences of Cladobotryum mycophilum (teleomorph Hypomyces odoratus) (GenBank Accession Nos. Y17096 and Y17095) (2). Pathogenicity tests were performed using 24 blocks containing sterilized, spawned, and incubated P. eryngii substrate (3.6 kg, 352 cm2 in area). The blocks were placed in a mushroom-growing room and cased with a 40-mm layer of a casing soil (0.7 liter block–1) made with mineral soil + Sphagnum peat 4:1 (vol/vol). Five days after casing, a conidial suspension (7 × 103 conidia ml–1) of one isolate of C. mycophilum was sprayed (5 ml per block) onto the surface of the casing layer at a rate of 106 conidia m–2. Twenty-two blocks were sprayed with sterile distilled water as a control. A temperature of 17 to 18°C and 85 to 90% relative humidity were maintained throughout cropping. The first cobweb symptoms developed 23 days after inoculation and C. mycophilum was consistently reisolated from nine (37.5%) of the inoculated blocks. Noninoculated blocks remained healthy. In a second test, conidial suspensions (3.4 × 105 conidia ml–1) of one isolate of C. mycophilum were inoculated onto 20 P. eryngii fruit bodies. Ten fruit bodies were inoculated externally while the other 10 fruit bodies were cut in half and inoculated internally with 50 μl of conidial suspension per fruit body. Sterilized distilled water was used as a control. All fruit bodies were then incubated at 22°C in a moist chamber. Assays were conducted twice and the results were recorded after 7 days. C. mycophilum grew on 85% of the internally inoculated fruit bodies and on 40% of those inoculated superficially, while the control mushrooms remained symptomless. To our knowledge, this is the first report of C. mycophilum causing cobweb in king oyster mushroom in Spain. This finding will have a potentially significant impact on button mushroom farms where cobweb is one of the most common diseases. References: (1) M. Gardes and T. D. Bruns. Mol. Ecol. 2:113, 1993. (2) G. J. McKay et al. Appl. Environ. Microbiol. 65:606, 1999. (3) T. J. White et al. PCR Protocols: A Guide to Methods and Applications. Academic Press, San Diego, 1990.
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Wang, Tongtao, Guoyin An, Shuai Xu, Jianchao Jia, Wenquan Wang, and Jaak J. K. Daemen. "Minimum operating pressure for a gas storage salt cavern under an emergency: a case study of Jintan, China." Oil & Gas Science and Technology – Revue d’IFP Energies nouvelles 75 (2020): 85. http://dx.doi.org/10.2516/ogst/2020079.
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Decreasing the gas pressure is one of the most effective methods to increase the working gas capacity of salt cavern Underground Gas Storages (UGS). In this paper, KING-1 and -2 caverns of Jintan salt cavern UGS, Jiangsu province, China, are studied as an example to investigate their responses under extremely low gas pressure. A 3D geomechanical model of the two caverns is built based on the geological features and rock properties of the host rock salt formation. Different operating conditions are simulated. Safety evaluation criteria for completion casing and caverns are proposed. Thresholds of the indicators consisting of the criteria are given to find the potential minimum gas pressure and the safe working duration of the two caverns. Calculation results indicate that axial strain (along the vertical direction) can perfectly reflect the effects of low gas pressure on the safety of completion casing. The indicators calculated based on the stresses have advantages compared to those based on deformation in assessing the safety of the salt cavern under such low gas pressure and short operating time conditions. The minimum gas pressure gradient of KING-1 and -2 caverns at the casing shoe can decrease from about 7 kPa/m to 5 kPa/m, viz., the minimum gas pressure can decrease from 7 MPa to 5 MPa. The maximum duration for 5 MPa is no more than 118 days. Taking KING-1 cavern as an example, the working gas volume can increase about 17.3%. Research results can provide references for Jintan salt cavern UGS coping with gas shortages.
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Yin, Cheng Xian, and Xin Hu Wang. "Influence of the Compressive Stress on the Corrosion of Petroleum Casing Premium Connection Material." Advanced Materials Research 512-515 (May 2012): 1919–22. http://dx.doi.org/10.4028/www.scientific.net/amr.512-515.1919.
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In order to find the corrosion cause of petroleum casing premium connection material, the fixture was design to simulate material enduring compressive stress, and the fixture was put in high temperature autoclave, and the corrosion rate of two kind casing material(carbon steel and stainless steel) enduring compressive stress were test in H2S and CO2 and Cl- water solution. The result was that compressive stress accelerated the corrosion of petroleum casing steel, and when compressive stress was greater than the value half as the yield strength the corrosion rate increased quickly.
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Wang, Xiao Wei, Pei Quan Guo, Lian Yi Zhao, and Pu Zhang. "Load Distribution Balance Principle of Petroleum Buttress Casing Thread and its NC Machining Method." Materials Science Forum 723 (June 2012): 439–44. http://dx.doi.org/10.4028/www.scientific.net/msf.723.439.
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The force of each API standard buttress casing thread teeth under axial tension is uneven, so the bearing capacity of this kind of thread is seriously restricted. On the basis of structural characteristics, mechanical model of the casing thread under axial tension is established and the loading and deforming features of thread teeth are analyzed. Based on this, to improve force distribution of casing thread, the designing method of multi-segment variable pitch thread is put forward and NC machining method of variable pitch thread with equal tooth thickness is presented.
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Shi, Lei, Wei Ma, Jian Yan, Hong Zhang, Zhi Min Li, and Ding Feng. "Impact Test and Error Analysis of N80 Waterproof Casing." Advanced Materials Research 816-817 (September 2013): 317–21. http://dx.doi.org/10.4028/www.scientific.net/amr.816-817.317.
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N80 waterproof casing is a kind of important equipment in petroleum drilling. In order to analyze the mechanical features of the N80 casing, we used pendulum impact testing machine to test the shock resistance of N80 casing. And we have analyzed and eliminated the errors which may affect the result of the impact test to ensure the reliability. At the same time, it summed up the causes of errors and the methods to avoid and reduce the errors during the pendulum impact test, and analyzed the sample selection method, the chosen of impact surface, the structure as well as the temperature influence, shape and other factors which influenced the measurement results.
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Xia, Qinxiang, Xinjian Ming, Jinchuan Long, and Xiujuan Liu. "Structural design and kinematic analysis of high-speed automatic casing system for lithium-ion battery." Multidiscipline Modeling in Materials and Structures 16, no. 2 (September 26, 2019): 225–37. http://dx.doi.org/10.1108/mmms-05-2019-0100.
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Purpose The purpose of this paper is to design the whole structure of high-speed automatic casing system (HSACS) for lithium-ion battery (LIB), and verify its rationality and reliability by kinematic simulation and casing test. Design/methodology/approach Based on the software of SolidWorks and ADAMS, the structure of working mechanisms for HSACS was designed, and virtual prototype models of HSACS and main turntable were established to realize the kinematic analysis. The HSACS casing test was also carried out and compared with simulation. Findings Simulation results for the designed HSACS were presented graphically and analyzed. The graphical results indicate that the coordination motions among the working mechanisms of HSACS are reasonable and no interference occurs. Casing test results show that the casing quality and production efficiency of HSACS equipment are satisfying. Originality/value In the present work, the developed virtual prototype models of HSACS provide reliable kinematic analysis results for the structural design of HSACS, and reasonable motion relations are realized in the designed structure of HSACS. Furthermore, not only the casing quality requirements can be met, but also the production efficiency of high-speed automatic casing machine for LIB is greatly improved via this kind of new HSACS structure.
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Szukács, Gergely, and András Geösel. "Effects of different casing onto the yield of button mushroom." Review on Agriculture and Rural Development 7, no. 1-2 (November 1, 2019): 77–80. http://dx.doi.org/10.14232/rard.2018.1-2.77-80.
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In Europe and Hungary Agaricus bisporus is the most widely cultivated mushroom. Because of the competition on the market and the increasing costs of production is necessary to optimize the cultivation conditions and develop its intensive production technologies. The casing of the substrate is a critical and essential part of the intensive cultivaion technologies. The casing layer is important because it helps to protect the substrate from some pathogens and also balances the alternating temperature. More than 90% of the button mushroom fruitbody is water and thus mainly supplied by the casing. This casing soil contains the essential microbiota for primordia formation like Pseudomonas putida which has an important role in pin head stage. Casing soils origine from different source, mainly bogs or fens. The major component of casing soil is usually some kind of peat, like Sphagnum peat or black peat and lime. There is many contradiction about the effect of this casing soils onto the mushroom production during cultivation. In this study, we collected 7 different casing soils from farmers and casing soil producers (1 Dutch, 2 Polish, 2 Romanian and 2 Hungarian) and monitored the changes of its electric conductivity (EC) and pH during a small-scale cultivation, and examined this casings effects onto the yield. According our experiment the pH had been decreasing and the electric conductivity had been increasing during the cultivation. There were no significant differences between the casings in the total yield, but our results underlined that quality of casing has a major importance in the mushroom cultivation.
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Li, Zong Rui, Xiao Qiong Yao, and Jin Mei Liu. "The Design of Digital Deep Underground Multi-Point Temperature and Humidity Detector." Applied Mechanics and Materials 563 (May 2014): 181–84. http://dx.doi.org/10.4028/www.scientific.net/amm.563.181.
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This paper introduces a kind of digital deep underground multi-point temperature and humidity detection device. The system consists of detecting casing, temperature and humidity acquisition ring and control system. Detection of casing pipe wall is provided with a plurality of fixed temperature, humidity collecting ring installation wiring hole. Temperature, humidity collecting ring comprises an annular casing, is located in the annular casing digital temperature acquisition board, digital humidity acquisition board, circular shell inner wall is provided with a threading hole, an air hole wall. The control system comprises the control switch, display, channel switching buttons and interface socket, arranged inside the shell. The power supplies module and the control processor. Compared with the existing technology, the system can be more accurate, convenient to complete the deep underground temperature, humidity signal acquisition, and it is more easy to change the signal acquisition position, at the same time, the system has low equipment cost, easy to assemble and use, has very high practicability.
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Liu, Gui Zhou, Yi Feng Zhao, Wen Wen Xin, Shang Zhen Nie, Man Liang Huang, Jin Suo Chen, Biao Zhang, and Zhao Yong Yuan. "A Kind of Convenient Method for Testing Strength of Combined Tubing String." Advanced Materials Research 787 (September 2013): 644–50. http://dx.doi.org/10.4028/www.scientific.net/amr.787.644.
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Constantly use combined tubing string to meet the strengths requirement during oil production and worover job. The maximum setting depth of combination tubing string is relevant to well deviation, casing program, fluid level, as well as tubings material, size, collapsing strength, internal-outer pressure resistance and floatage of holebore fluid. Based on mechanics analysis and mathematical development, obtained mathematical relation which can meet requirement of different combined tubing string, and described relation of conventional tubing string composition length, it can be used for tubing string strengths checking.
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Rocha, Carol Martins da. "Cásina: um desejo picante." Nuntius Antiquus 7, no. 1 (June 30, 2011): 31–44. http://dx.doi.org/10.17851/1983-3636.7.1.31-44.
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As usually occurs in Plautus’ comedy, in Casina the search for pleasure is an important motif of the plot. However in this play pleasure is represented – whether figuratively, whether more directly – in a particular mood. Besides a very recurrent use of metaphors and images related to scents and flavoring, there are notorious much more explicit (and not so commonly found in Plautine texts) mentions to the erotic desire and sexual intercourse. Evincing the uarietas in which pleasure is referred to in Casina, this article aims to reflect on how such a representation affects the composition of the Plautine plot. In Casina some sexual references also contribute to allude to another kind of pleasure: the one that comes from theater, represented in this comedy by a play-within-a-play.
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Yao, Wen Jin, Xiao Ming Wang, Wen Bin Li, and Xiao Hui Gu. "Effect of Carbon Fiber Composite Material Casing on Blast Power of Explosive Charge." Advanced Materials Research 79-82 (August 2009): 461–64. http://dx.doi.org/10.4028/www.scientific.net/amr.79-82.461.
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A new kind of low collateral damage ammunition with Carbon fiber composite material casing is put forward. The operational principle of this ammunition and its configuration are introduced. Then the casting velocity of lethal unit and air shock wave pressure is analyzed theoretically and simulated. In order to study the effect of casing material on blast power, two different kinds of explosive charges are detonated. Overpressure curve of these two charges is measured using the pressure sensors. From the measured overpressure curve and theoretical simulation results, the duration of the positive pressure of the air blast pressure wave caused by the prototype model of the low collateral damage ammunition is bigger than the explosive charge with Carbon fiber composite material casing and naked explosive charge. From the high speed photography, the lethal units flight to a halt at a small distance. These results show the explosive charge with Carbon fiber composite material casing and metal powder can reduce destruction outside the radius of an intended target while enhancing its destructive force on the target.
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Niu, Yue Ting, Xi Hui Mu, Li Li, and Liang Chun Li. "Fracture Failure Mechanism Analysis of a Type of Tracklayer Gearbox Casing Based on Mechanical Mechanics and Material Properties." Advanced Materials Research 738 (August 2013): 97–102. http://dx.doi.org/10.4028/www.scientific.net/amr.738.97.
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The gearbox casings fatigue fracture is one of the most serious forms of failure in the tracked vehicle transmission system. This paper studies the fracture failure mechanism of the gearbox casing of a typical tracked vehicle by the material analysis and structural stress analysis. The results show that, the structure of the stress concentration and the organization defects such as inclusions and porosities in the Casing Material ZL101 cast aluminum alloy are the main reasons for fatigue crack initiation and propagation. This paper made recommendations on how to improve fatigue life of this kind of parts.
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Pattillo, Phillip D., and Michael B. Smith. "The Effect of Formation Flow on the Integrity of Perforated Casing." Society of Petroleum Engineers Journal 25, no. 05 (October 1, 1985): 637–46. http://dx.doi.org/10.2118/11123-pa.
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Abstract This paper summarizes an analysis of formation/casing deformations in a chalk reservoir. The study is linked to the development of a poroelastic-plastic model of ductile rocks. Applications of the model include an analysis of chalk production into perforated casing and a discussion of the effects of such production on collapse integrity of the casing. Introduction The deleterious effects of near-wellbore formation movement on the cross-sectional integrity of casing is well documented in the literature. The most common occurrences of this phenomenon are associated with the creep of salt sections. However, similar problems have been discovered in the attempts to recover Athabasca oil sands. In dealing with the flow of formations (such as salt), one is confronted typically with the exposure of the casing cross section to a nonuniform stress field induced either by massive flow of the formation in a preferential direction or by local collapse of the wellbore. while usually in the absence of adequate protection from a competent cement sheath. It has been demonstrated both analytically and experimentally that such nonuniform, cross-sectional loads can reduce drastically the collapse resistance of coincident casing strings. The purpose of this paper is to discuss an additional source of nonuniform. cross-sectional loading. Whereas the loads associated with salt flow represent an ever-present danger whose origin can be traced to the introduction of the wellbore into a nonproductive subsurface layer of viscous potential, the nonuniform loads discussed here are limited to productive formations. Furthermore, the origin of nonuniform loading discussed here can be traced directly to production operations - namely, the presence of perforations and the reduction in near-wellbore pore pressure accompanying exploitation of a hydrocarbon reservoir. Finally, although this discussion focuses on experiences encountered with respect to a particular field and formation rock type, the indication is that similar problems can be expected from a variety of reservoirs. During, the early stages of field-development drilling, three wells suffered collapse opposite the producing formation during initial testing. The producing formation is an overpressured, fractured, highly porous ( phi 45%) chalk that has exhibited a tendency to flow with production. production. This paper presents the results of a study aimed at providing an accurate model of the continuum behavior of providing an accurate model of the continuum behavior of the formation. Applications of the model include an analysis of chalk production into perforated casing and a discussion of the effects of such production on collapse integrity of the production casing. Conclusions from this study have been segregated to reflect the various stages of the analysis. Outline of Study Of paramount importance to this study was the investigation of the integrity of the 7-in. [17.8-cm] production liners during reservoir depletion. This objective was created as a direct result of the casing failures experienced in the exploratory wells. To organize the presentation of the analysis, the study is reviewed in four stages. presentation of the analysis, the study is reviewed in four stages.Formulate Model. The purpose of this portion of the study was to review all available experimental tests on the producing formation or acceptable substitutes and to determine a satisfactory model to describe initial yield and subsequent inelastic behavior of the formation.Duplicate Experimental Observation. With an acceptable model for chalk response to simple loading patterns chosen, it was then appropriate to attempt to patterns chosen, it was then appropriate to attempt to duplicate the results of experiments that have been performed on the Dania chalk, a formation similar in performed on the Dania chalk, a formation similar in constitution to the objective reservoir. In particular, the tests reported by King and Holman* were judged an acceptable starting place for determining the applicability of the model to loading patterns more nearly approaching actual near-wellbore behavior.Determine Near-Wellbore Stress Fields. Assuming that the experimental work of King and Holman could be adequately modeled, the next step involved an investigation of the stress field existing in the chalk in the vicinity of perforated casing to determine the nonuniform tractions to which the casing would be exposed.Investigate Casing Integrity. The last portion of the investigation was devoted to an analysis of the integrity of the 7-in. [17.8-cm] production liners subjected to surface tractions determined in Step 3. SPEJ P. 637
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Liang, Ji Wen, Chuan Shi Lu, Chong Zhang, Yi Long Xu, Chao Zhang, and Jian Guo Chen. "Creep Property Experimental Research of Offshore Unconsolidated Sand Reservoir." Applied Mechanics and Materials 638-640 (September 2014): 422–26. http://dx.doi.org/10.4028/www.scientific.net/amm.638-640.422.
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Unconsolidated sandstone is a kind of formation with low strength and large deformation property. Deeper unconsolidated sand formations have larger geostress and perform the plastic and rheological characteristics. After the borehole has been drilled into, this kind of sandstone will creep, which will cause some problems such as pipe stuck and casing deformation failure etc. Therefore, creep parameters of unconsolidated sandstone are critical for designing drilling fluid density and choosing casing material. Through indoor experiments, creep data of unconsolidated sandstone from Zhujiang group of X oil field in the west of South China Sea was get. The experiments results indicate that creep law of this sandstone conforms to Nishihara’s model, and the creep parameters were calculated based on experiments data. According to Nishihara’s model, using numerical simulation method, this paper analyzes the relationship of sandstone creep shrinkage rate with time of Zhujiang group reservoir sandstone and determines the drilling fluid density that ensures the safety of horizontal wells drilling, which has guiding significance for well design and drilling.
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Guo, Xiong, Lv Long Zou, Bing Lu, Shi Liang Zhang, Xing Ren Su, and Hui Xu. "Research on the Connection Performance of Variable Pitch of Screw Threaded Casing Based on 3D Finite Element Simulation Model." Applied Mechanics and Materials 215-216 (November 2012): 1105–10. http://dx.doi.org/10.4028/www.scientific.net/amm.215-216.1105.
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The connection performance of the large taper, multi-thread, variable pitch of screw threaded casing is researched by 3D finite element simulation on ANSYS Workbench. The 3D finite element model is created precisely. The stress distribution on the teeth of three kind variable pitch of screw threaded structure is studied by using the static structure of the contact analysis module. Contrasting stress distribution of the variable pitch of screw with of the equal pitch of screw under the same working condition, it is validated that design principle for the variable pitch of screw connection is correct. The influence of changes in the amount of variable pitch of screw to the whole stress distribution on teeth is discussed. The results show that the force distribution on the teeth of the variable pitch of screw connection is more uniform than equal pitch of screw, and will improve the overall carrying capacity. This study has its practical value to improve the connective performance of the threaded casing and enhance the product quality of threaded casing.
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Yang, Jiaqi, Bikash K. Sinha, and Tarek M. Habashy. "A theoretical study on formation shear radial profiling in well-bonded cased boreholes using sonic dispersion data based on a parameterized perturbation model." GEOPHYSICS 77, no. 3 (May 1, 2012): WA197—WA210. http://dx.doi.org/10.1190/geo2011-0279.1.
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Interpretation of sonic data can be challenging in the presence of a steel casing that has a strong influence on elastic waves propagating along a borehole. The cement annulus behind the casing together with drilling-induced near-wellbore alteration causes radial heterogeneity in the propagating medium. It is necessary to study the influence of such heterogeneities on borehole waves and estimate the radial extent of near-wellbore alteration in terms of radial variation of velocities away from the casing. To this end, we based our study on the model of a fluid-filled well-bonded cased borehole surrounded by a cylindrically layered formation. The formation is isotropic and purely elastic, and can be either fast or slow. Borehole monopole and dipole dispersions for this kind of model can be obtained from a root finding mode-search routine. A modified perturbation model based on Hamilton’s principle is used to predict changes in borehole dispersions caused by formation heterogeneities. A two-layer formation model as the reference state is introduced, which always provides normal dispersive reference dispersion for calculations of perturbation integrals for fast and slow formations. Radial variations of the formation shear velocity can be expressed in terms of a parametric exponential profile. Consequently, estimation of these parameters in the assumed profile yields the radial variation of the formation shear slowness away from the casing. Numerical results using synthetic examples are presented to demonstrate the validity of this radial profiling methodology.
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Brunson, James E. "The Kings of Casino Park: Black Baseball in the Lost Season of 1932 by Thomas Aiello (review)." NINE: A Journal of Baseball History and Culture 21, no. 1 (2012): 169–71. http://dx.doi.org/10.1353/nin.2012.0042.
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Kudinov, V. A., E. V. Kotova, O. Yu Kurganova, and V. K. Tkachev. "Experimental and Theoretical Research of a Hot Condition of High Pressure Cylinder of the T-100-130 Steam Turbine." ENERGETIKA. Proceedings of CIS higher education institutions and power engineering associations 62, no. 5 (October 4, 2019): 459–68. http://dx.doi.org/10.21122/1029-7448-2019-62-5-459-468.
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The results of experimental and theoretical studies of the temperature state of the high- pressure cylinder (HPC) of the T-100-130 steam turbine for one of the start modes are presented. Taking into account the dependence of the coefficient of linear expansion on the temperature, the elongations of the individual sections of the casing under different temperatures and its total elongation after the turbine operation starts to correspond to the stationary operation mode have been found. The studies have shown that in the process of actuation the turbine there is a significant difference in temperature along the length of the HPC casing. In this case, the most intense heating occurs in the area from the second to the sixth section. The greatest temperature difference was observed in stationary operation at maximum temperature in the fifth section. Using the orthogonal method of L. V. Kantorovich, an approximate analytical solution of the thermal conductivity problem for a two-layer wall (turbine casing – thermal insulation) under inhomogeneous boundary conditions of the third kind is obtained. With the use of experimental data on the temperature state of the outer surface of the casing of the HPC by solving the inverse problem of thermal conductivity, the average heat transfer coefficients for the actuation period characterizing the intensity of heat transfer from steam to the casing have been found. On the basis of experimental data on the temperature change of any of the controlled parameters of the turbine over time, a theoretical method for predicting its change in a certain time range from the time of the its last measurement has been developed. The use of this method to predict the change in the temperature difference between the top and bottom of the HPC casing during the actuation showed that for a period of time equal to 3–5 minutes the forecast is fulfilled with high reliability.
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Tally Jr., Robert. "Herman Melville: Between Charlemagne and the Antemosaic Cosmic Man: Race, Class, and the Crisis of Bourgeois Ideology in the American Renaissance Writer." Historical Materialism 17, no. 3 (2009): 235–43. http://dx.doi.org/10.1163/146544609x12469428108781.
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AbstractTally reviews Loren Goldner's Herman Melville: Between Charlemagne and the Antemosaic Cosmic King, which posits that Melville was the American Marx, exposing the crisis of bourgeois ideology in the revolutionary period around 1848. In this, Goldner follows a tradition of Marxian scholarship of Melville, notably including C.L.R. James, Michael Paul Rogin, and Cesare Casarino. Tally concludes that Goldner's argument, while interesting, is limited by its focus on American exceptionalism and by ignoring the postnational force of Melville's novels.
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Vincentius, Royke, and Muhammad Ariyandi. "DESAIN CASING SARANA ABSENSI KHUSUS MAHASISWA POLITEKNIK NEGERI SAMARINDA." Jurnal Kreatif : Desain Produk Industri dan Arsitektur 3, no. 2 (October 10, 2020): 11. http://dx.doi.org/10.46964/jkdpia.v3i2.85.
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Absensi merupakan proses kegiatan pendataan yang ada pada sekolah, kampus, kantor, tempat instansi atau yang berhubungan dengan sesuatu kegiatan lainnya. Kegiatan absensi sudah mudah dilakukan dimana sebelumnya menggunakan media kertas sekarang menggunakan sistem komputer, yaitu dilakukan dengan pemindaian sidik jari atau kartu mahasiswa yang terintegrasi di pusat data. Politeknik Negeri Samarinda kini sudah menggunakan sistem absensi ini untuk mendata seluruh mahasiswa dengan memfasilitasi perangkat absensi elektronik yang tersedia di setiap jurusan. Permasalahan yang ditemui yaitu penempatan mesin absensi ini umumnya ditempatkan di dinding sehingga instalasi kabel-kabel terlihat dan bagian komponen elektronik gampang mengalami kerusakan. Melalui metode dengan perancangan desain produk yang meliputi identifikasi masalah, pengumpulan data, analisis data, sehingga didapat spesifikasi desain maka dibuat beberapa alternatif dan ditentukan final desain serta dibuat prototipe desain casing sarana absensi elektronik. Dari hasil proses perancangan maka desain casing sarana absensi elektronik ini dibuat untuk memudahkan pengguna dan melindungi peralatan elektronik dari kerusakan, serta menggunakan gaya desain modern yang sesuai visi dan misi Politeknik Negeri Samarinda. Dengan adanya pembuatan sarana ini diharapkan kegiatan absensi berjalan dengan baik dan juga memberikan dampak positif bagi kegiatan aktivitas akademik di Politeknik Negeri Samarinda
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Chesney, Marc, and William Eid Júnior. "Options listing and the volatility of the underling asset: a study on the derivative market function." Revista de Administração de Empresas 36, no. 1 (March 1996): 28–32. http://dx.doi.org/10.1590/s0034-75901996000100005.
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There are basic misunderstandings on derivative markets. Some professionals believe that they are a kind of casinos and have no utility for the investors. This work looks at the effects of options introduction in the Brazilian market, seeking for another benefit for this introduction: changes in the stocks risk leveI. Our results are the same found in the US and other markets: the options introduction reduces the stocks volatility. We also found that there is a slight indication that the volatility becames more stochastic with this alternative.
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Xu, Zhe, Qing Yi He, and Xiang Shi. "Design of PLC Control System in Automatic Production Line for Casing Fin Tube." Advanced Materials Research 971-973 (June 2014): 1176–79. http://dx.doi.org/10.4028/www.scientific.net/amr.971-973.1176.
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Finned tube is a kind of highly efficient heat exchange component, widely used in heat exchanger. In order to improve the automation level of finned tube production line, this paper, according to the composition of finned tube production line and the function of each part, designed the control scheme of the production line, including motor drive technology, hydraulics technology, PLC control technology etc. The control scheme makes raw material of aluminum sheet feeding, punching, shearing, winged, tube expanding process to form a whole, which improved the efficiency of the production line and the processing precision.
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Witek, Wiesław, and Marcin Rzepka. "Zjawiska chemiczno-technologiczne podczas zabiegu cementowania otworu w aspekcie projektowania rur okładzinowych ze szczególnym uwzględnieniem ich wytrzymałości na zgniatanie i rozrywanie." Nafta-Gaz 77, no. 3 (March 2021): 187–99. http://dx.doi.org/10.18668/ng.2021.03.05.
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One of the most important issues that needs to be addressed in the borehole design process is the optimal design of the borehole structure, including the appropriate selection of individual casing columns and their setting given the assumed geological and cementing-technical conditions. Specific geological and technical conditions imply a number of both conditions and constraints. A kind of dimensional unification of pipes adopted by API many decades ago, i.e. a series according to the outer diameter of the pipes, constitutes the main natural constraint. Other elements of this unification, such as a series of steel grades or of classic and PREMIUM thread connections were implemented gradually as drilling technology developed. Regardless of these conditions, one thing always remains the same when designing casing and selecting production tubing, i.e. maintaining the balance between the existing loads acting on the pipes during the drilling process and operation of the borehole and the minimum mechanical strength of the pipes. This article reviews the methods and guidelines for casing pipe designing published by API and of computer programs, including StressCheck, which is currently one of the commonly used pipe design tools. The strength issues discussed in the article refer mainly to the pipe body, ignoring the complex issue of the strength of the thread connections, especially those of PREMIUM type, whose qualification is not subject to API standards, but to the guidelines contained in ISO 13679.
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Li, Bo, Ming Luo, Zhanbing Yang, Feifei Yang, Huasong Liu, Haiyan Tang, Zhonghua Zhang, and Jiaquan Zhang. "Microstructure Evolution of the Semi-Macro Segregation Induced Banded Structure in High Strength Oil Tubes During Quenching and Tempering Treatments." Materials 12, no. 20 (October 11, 2019): 3310. http://dx.doi.org/10.3390/ma12203310.
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C110 oil well casing tubes should have high strength and corrosion resistance which is commonly used for deep wells operation containing corrosive media. In this paper, the microstructure evolution of a kind of semi-macro segregation originated banded structure in casing tubes is studied under different heat treatments. It is shown that the characteristics of the banded structure will change significantly in subsequent hot working and heat treatment processes. For the hot-rolled ones, the banded structure is composed of pearlite plus bainite. After quenching, it evolves into martensite band with high concentration solute elements. Finally, the banded structure will change into a carbide banding under the following tempering process. The temperature and cooling rate of the tempering practice show an obvious effect on the final band structure. To improve anti-SSC (sulfide stress corrosion cracking) performance, the favorable QT (quenching and tempering) practice for C110 steel should be a higher tempering temperature and a quicker cooling rate, from which the banded structure defects can be decreased together with an obvious improvement of the tube wall hardness uniformity.
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Yoon, Yong Sang, Seung Jin Song, and Hyoun-Woo Shin. "Influence of Flow Coefficient, Stagger Angle, and Tip Clearance on Tip Vortex in Axial Compressors." Journal of Fluids Engineering 128, no. 6 (March 27, 2006): 1274–80. http://dx.doi.org/10.1115/1.2354522.
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Experiments have been performed on the low speed research compressor (LSRC) at General Electric Aircraft Engines to investigate the effects of flow coefficient, stagger angle, and tip clearance on tip vortex. Time resolved casing pressure distributions over the third stage rotor have been acquired with high-frequency-response pressure transducers. Also, tip vortex strength and trajectory have been estimated from the casing pressure fluctuations which have been obtained simultaneously from various axial locations. As flow coefficient decreases, tip vortex gets strengthened and migrates upstream. The stagger angle increase weakens the tip vortex and moves it downstream slightly because the blade loading is decreased. However, tip leakage vortex is influenced mainly by tip clearance, and there exists a “critical” tip clearance which determines the type of tip vortex trajectory (“straight” or “kinked”). As predicted by others, tip vortex gets strengthened with increasing tip clearance. However, unlike the predictions, the tip vortex trajectory moves upstream with increasing tip clearance. Furthermore, with tip clearance above a “critical” value, the tip vortex trajectory is no longer straight but shows a kink in the passage.
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Wang, Dang Hui, and Tian Han Xu. "A Novel Characteristic Method on Fatigue Crack Growth of N80 Casing Drilling Steel." Advanced Materials Research 194-196 (February 2011): 224–27. http://dx.doi.org/10.4028/www.scientific.net/amr.194-196.224.
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Electrical parameters and low-frequency noise test were measured for N80 steel casing drilling, through extracting low-frequency parameters and combining with conventional fatigue crack growth characterization methods and analyzing their morphology. After fatigue crack growth, the results showed that: (1) Electrical parameters of N80 increase, and power spectral density of 1/f noise increases two orders of magnitude. (2) Values of γ and B are significantly increased, indicating that the process of fatigue produced more cracks, defects, and combination centers, from the mechanism of fatigue crack growth of N80, defects and cracks resulting from fatigue are the numbers of kind of fluctuations. In essence, low-frequency noise is a type of fluctuations, which show that low-frequency noise as the characterization of non-destructive., which can serve as a viable tool to study the defects and the characterization of defects.
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Pei, Hong. "Research and Application of a Liquid Bridge Plug as Wellbore Working Fluids." Advanced Materials Research 962-965 (June 2014): 587–90. http://dx.doi.org/10.4028/www.scientific.net/amr.962-965.587.
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The research and application of LH-I liquid bridge plug - a kind of wellbore working fluid for plugging the lower formations are introduced in detail in the paper. The plug is reliable and easy to operate, eliminating the running and pulling of strings in mechanical plugging and requiring no fishing operations. It can be used for isolating and plugging the lower formations inside the wellbore, especially for wells with small barrier layers, hard to set wells, initial sand control wells, and wells completed with 177.8mm (7〞) casing and 127mm (5〞) tail pipe, in which mechanical packers and mechanical bridge plugs can not be used.
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Bustos, Laura, Lady Caro, and Karen Chisco. "Racismo en Estados Unidos: desafíos en el mundo contemporáneo." Ciudad Paz-ando 9, no. 2 (December 26, 2016): 107–19. http://dx.doi.org/10.14483/2422278x.11418.
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En el 2014 se registró la muerte de dos afroamericanos en manos de oficialesde policía de EEUU, quienes al final del proceso fueron absueltos. En este casono llamó tanto la atención la impunidad de la justicia, sino la reapertura a undebate que ha sido una constante en la formación identitaria de Estados Unidos:las dinámicas implícitas y explícitas con las que se manifiesta en el mundocontemporáneo el racismo, y que a pesar de las luchas de personajes comoMartin Luther King y Abraham Lincoln, ponen en duda hasta qué punto se haacabado esta práctica, y por el contrario, cómo gruesos sectores de la sociedadcivil legitiman la exclusión de la diferencia. Por tal razón, a partir de las teoríasde Charles Darwin y Herbert Spencer (darwinismo social y determinismo racial)junto con el enfoque postmodernista de las relaciones internacionales, se haceun análisis de las formas más sutiles de exclusión social y racial, teniendo encuenta los desafíos que presentan estos temas en la actualidad.
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MOHAMMAD, Anwar O., Abdulkareem E. S. ALKURTANY, and Abdullah A. HASSAN. "Evaluation of API 20E system in fluorescent Pseudomonas identification from button mushroom Agaricus bisporus cultivation casing soil." Notulae Scientia Biologicae 12, no. 2 (June 29, 2020): 258–63. http://dx.doi.org/10.15835/nsb12210628.
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Bacterial activity, mainly Pseudomonas spp. plays a vital role in the fruiting process of white button mushroom, hence a rapid procedure to identify these bacteria is crucial. In the current study, the validity of commercial identification system, Analytical profile index API 20E to identify Pseudomonas isolates from mushroom casing soil were assessed. Using API strips fifty bacterial isolates from a selective medium (King B medium) were examined, all isolates were belonged to the genus Pseudomonas according to API 20E identification systems. However, only 74% of Pseudomonas bacteria were identified to species level. The molecular identification using 16S rRNA gene was used as a reference tool to identify bacteria at the species level. The results show that the accuracy of the system to classify florescent Pseudomonas to species level was 60%. This was species dependant, and the system accuracy were 100%, 87.5%, 81.3% and 63% in identifying P. aeruginosa, P. putida, P. fluorescens and P. tolaasii respectively. Our finding indicates that although the classification of the Pseudomonas genus with API 20E system is useful, but it is not enough to distinguish these bacteria to species level, genomic studies are necessary to confirm the exact taxonomic position of Pseudomonas spp.
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Wang, Dang Hui, Tian Han Xu, and Ting Zhen Yao. "Research on Morphology of N80 Casing Drilling Steel Fatigue Crack Growth with Low-Frequency Noise." Advanced Materials Research 239-242 (May 2011): 2795–98. http://dx.doi.org/10.4028/www.scientific.net/amr.239-242.2795.
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Microstructure and low-frequency noise test were measured for N80 steel casing drilling, through SEM analyzed their morphology. Results showed that: (1) power spectral density of 1/f noise increases two orders of magnitude after fatigue crack growth. (2) 1/f noise parameters of γ and B are significantly increased, indicating that the process of fatigue produced more cracks, defects, and combination centers, which were proved by microstructure morphology. From the mechanism of fatigue crack growth of N80, defects and cracks resulting from fatigue are the numbers of kind of fluctuations. In essence, low-frequency noise is a type of fluctuations, which can serve as a viable tool to study the defects and the characterization of defects.
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Dastgerdi, Milad Ebrahimi, Abbas Khaksar Manshad, and Amir H. Mohammadi. "Optimization of perforated liner parameters in horizontal oil wells." Journal of Petroleum Exploration and Production Technology 10, no. 8 (September 11, 2020): 3505–14. http://dx.doi.org/10.1007/s13202-020-00951-z.
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Abstract Nowadays, horizontal wells play a vital role in the production from thin heavy oil reservoirs. Designing a suitable completion for this kind of reservoirs is a decisive factor to boost the efficiency of durable production. This study deals with the optimization of perforated liner design for horizontal wells in Sarvak oil reservoir, which is located in the southwest of Iran. Sarvak is a carbonate oil reservoir, but it contains shale and mudstone. To avoid solid production and formation collapse, the screen liner was selected as a cost-effective solution. There were two choices, either perforated liner or slotted liner. The perforated liner was selected by finite element analysis and strength checking, which was proven by laboratory experiments. Sensitivity analysis was performed on various perforated parameters such as phase angle, hole density, hole diameter and hole distribution to determine the pattern of the holes so that enough strength of the liner was maintained while maintaining the maximum hole density. Then, parameters of perforated liner were determined by calculated loss of the flowing path, collapse resistance strength and tensile strength of casing pipes after perforated. As a result, hole density, hole size and perforated pattern were selected 100 HPM, 10 mm and 4-thread-line, respectively, in 4 ½” liner with 13.5 ppf. The ratio of the strength of the optimized perforated liner was less than 8% for collapse and 5% for tensile compared to the same specification casing.
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Nakashima, C. Y., S. Oliveira Jr, and E. F. Caetano. "CALCULATION OF PRESSURE DROP IN NARROW ROTATING ANNULAR CLEARANCES." Revista de Engenharia Térmica 7, no. 2 (December 31, 2008): 27. http://dx.doi.org/10.5380/reterm.v7i2.61756.
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This paper presents a review of correlations used for pressure drop calculation in narrow annular clearances with rotation of inner cylinder. Based on these review, a new general correlation is proposed to calculate pressure drop through such clearances. Results are compared with experimental data for different flow regimes: laminar, laminar with Taylor vortex, smooth and rough turbulent, with good agreement. The main objective is to develop a simple and general correlation that could be used for backflow calculation in twin-screw multiphase pumps. In this kind of pump, the volumetric efficiency is defined mainly by the backflow rate which occurs in the annular clearance between screw and casing. Usually, the backflow is calculated ignoring the influence of shaft rotation over pressure drop and does not consider the several possible flow regimes. Depending on operational conditions, this simplification can lead to significant errors.
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Duran, Kevin. "Reviewer Acknowledgements for International Business Research, Vol. 10, No. 6." International Business Research 10, no. 6 (May 27, 2017): 270. http://dx.doi.org/10.5539/ibr.v10n6p270.
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International Business Research wishes to acknowledge the following individuals for their assistance with peer review of manuscripts for this issue. Their help and contributions in maintaining the quality of the journal are greatly appreciated.International Business Research is recruiting reviewers for the journal. If you are interested in becoming a reviewer, we welcome you to join us. Please find the application form and details at http://recruitment.ccsenet.org and e-mail the completed application form to ibr@ccsenet.org.Reviewers for Volume 10, Number 6 Ahmad Mahmoud Ahmad Zamil, King Saud University RCC, JordanAlina Badulescu, University of Oradea, RomaniaNasim Saadati, Panjab University, IndiaAmran Awang, Head of Entrepreneurship Center, MalaysiaAlireza Athari, Eastern Mediterranean University, IranSerhii Kozlovskiy, Donetsk National University, UkraineMaria Teresa Bianchi, University of Rome “LA SAPIENZA”, ItalyMongi Arfaoui, University of Monastir, TunisiaAurelija Burinskiene, Vilnius Gediminas Technical University, LithuaniaHung-Che Wu, Nanfang College of Sun Yat-sen University, ChinaGiuseppe Granata, University of Cassino and Southen Lazio, ItalyVincent Grèzes, University of Applied Sciences Western Switzerland (HES-SO Valais-Wallis), SwitzerlandGianluca Ginesti, University of Naples “FEDERICO II”, ItalyAbedalqader Rababah, Arab Open University, OmanMuath Eleswed, American University of Kuwait, USAFrancesco Ciampi, Florence University, ItalyGeorgeta Dragomir, “Danubius” University of Galati, RomaniaFabio De Felice, University of Cassino and Southern Lazio, ItalyLadislav Mura, University of Ss. Cyril and Methodius in Trnava, SlovakiaMalgorzata Koszewska, Lodz University of Technology, PolandManlio Del Giudice, University of Rome "Link Campus", ItalyManuela Rozalia Gabor, “Petru Maior” University of Tîrgu Mureş, RomaniaMaria do Céu Gaspar Alves, University of Beira Interior, PortugalMihaela Simionescu, Institute for Economic Forecasting of the Romanian Academy, RomaniaModar Abdullatif, Middle East University, JordanJorge Mongay-Hurtado, ESIC Business and Marketing School, SpainRadoslav Jankal, University of Zilina, SlovakiaRafiuddin Ahmed, James Cook University, AustraliaTerrill Frantz, Peking University HSBC Business School, USAVassili JOANNIDES de LAUTOUR, Grenoble École de Management (France) and Queensland University of Technology School of Accountancy (Australia), FranceMohsen Malekalketab Khiabani, University Technology Malaysia, MalaysiaMaria J. Sanchez-Bueno, Universidad Carlos III se Madrid, SpainCheng Jing, eBay, Inc. / University of Rochester, USAArash Riasi, University of Delaware, USASumathisri Bhoopalan, Sastra University, IndiaFevzi Esen, Istanbul Medeniyet University, TurkeyAshford C Chea, Benedict College, USA
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Liu, Ke, Chang Wang, Guo-liang Liu, Ning Ding, Qi-song Sun, and Zhi-hong Tian. "Research on Soft Reduction Amount Distribution to Eliminate Typical Inter-dendritic Crack in Continuous Casting Slab of X70 Pipeline Steel by Numerical Model." High Temperature Materials and Processes 36, no. 4 (April 1, 2017): 359–72. http://dx.doi.org/10.1515/htmp-2016-0160.
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AbstractTo investigate the formation of one kind of typical inter-dendritic crack around triple point region in continuous casting(CC) slab during the operation of soft reduction, fully coupled 3D thermo-mechanical finite element models was developed, also plant trials were carried out in a domestic continuous casting machine. Three possible types of soft reduction amount distribution (SRAD) in the soft reduction region were analyzed. The relationship between the typical inter-dendritic cracks and soft reduction conditions is presented and demonstrated in production practice. Considering the critical strain of internal crack formation, a critical tolerance for the soft reduction amount distribution and related casing parameters have been proposed for better contribution of soft reduction to the internal quality of slabs. The typical inter-dendritic crack around the triple point region had been eliminated effectively through the application of proposed suggestions for continuous casting of X70 pipeline steel in industrial practice.
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Park, Won Jo, Yong Bum Choi, Sun Chul Huh, and Han Ki Yoon. "Fatigue Crack Growth in Aluminum Borate Whisker Reinforced AC4CH Alloy Matrix Composite Fabricated by Squeeze Casing." International Journal of Modern Physics B 17, no. 08n09 (April 10, 2003): 1730–36. http://dx.doi.org/10.1142/s0217979203019587.
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Al 18 B 4 O 33 w / AC4CH composite was fabricated using squeeze-casting method in which the molten aluminum was infiltrated into the whisker preform mounted on the mould. The aluminum borate whisker is very effective in the improvement of the mechanical properties of the AC4CH alloy. This paper is focused on fatigue crack growth behavior of the composite under different stress ratios R = 0.1 and R = 0.05. The effects of stress ratio on fatigue crack growth behavior of Al 18 B 4 O 33 w / AC4CH have also been investigated. In addition, the fracture of the fatigue crack growth was also investigated using scanning electro microscopy (SEM). As the results of an investigation, the whisker reinforcement phases in the AC4CH alloy matrix are irregularly shaped and randomly dispersed. The fatigue crack growth behavior at equivalent stress intensity factor in Al 18 B 4 O 33 w / AC4CH was faster than that of AC4CH alloy and the curves are very steep compared to the traditional metallic alloy. The region of stable crack growth in AC4CH was shown that the characteristic of surface has rough shape. It was appeared a kind of dimple type on the surface. But in case of Al 18 B 4 O 33 w / AC4CH , the characteristic of surface was gross brittle failure.
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Gea, F. J., M. J. Navarro, J. Carrasco, A. J. González, and L. M. Suz. "First Report of Cobweb on White Button Mushroom (Agaricus bisporus) in Spain Caused by Cladobotryum mycophilum." Plant Disease 96, no. 7 (July 2012): 1067. http://dx.doi.org/10.1094/pdis-02-12-0120-pdn.
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Between 2008 and 2011, symptoms of cobweb were observed in commercial white button mushroom (Agaricus bisporus) crops in Castilla-La Mancha (Spain). Typical symptoms started as white, cobweb-like mycelial growth over the surface of the casing soils and fruiting bodies. Later, the mycelium changed to a grayish white, dense powder and the affected fruiting bodies turned pale yellow or reddish brown before rotting. Two types of cap spotting were observed, dark brown spots with a poorly defined edge and light brown spots. The first symptoms were commonly seen in the second or third break (flush) of mushrooms. Infected tissues of A. bisporus were plated onto potato dextrose agar (PDA) and a parasitic fungus was isolated. Fungal colonies consisted of abundant, cottony, aerial mycelium spreading rapidly over the PDA, and red pigment spreading into the agar. The cultures lacked a camphor odor. Conidiogenous cells were 24 to 45 μm long, 3 to 6 μm wide basally, and tapered slightly to the tip. Conidia were cylindrical to narrowly ellipsoidal, 15 to 28 × 8 to 11 μm, and zero- to three-septate. Total DNA was extracted and the internal transcribed spacer (ITS) region of rDNA amplified for one mycelial isolate using ITS1F/ITS4 primers (2,4). The amplicon was sequenced (GenBank Accession No. JQ004732). BLAST analysis showed highest similarity (99 and 100%) of the ITS sequence to four ITS sequences of Cladobotryum mycophilum (teleomorph Hypomyces odoratus) (GenBank Accession Nos. AB527074, JF505112, Y17095, and Y17096) (1,3) among other sequences of the same species. Two pathogenicity trials (A and B) were performed in mushroom-growing rooms, with 24 blocks in each assay containing pasteurized, spawned, and incubated A. bisporus substrate (10 kg, 0.15 m2). The blocks were cased with a 35-mm layer of a peat-based casing soil (5.5 liter/block). Nine days after casing, a conidial suspension (7.5 × 103 conidia/ml) of one isolate of C. mycophilum was sprayed (20 ml/block) onto the surface of the casing layer of 12 blocks at 106 conidia/m2. Twelve blocks were sprayed with sterile distilled water as a control treatment. Blocks were maintained at 17.5°C and 90% relative humidity. The first cobweb symptoms developed 25 days after inoculation, between the second and third breaks in trial A; and after 11 days, between the first and second breaks in trial B. C. mycophilum was consistently reisolated from eight inoculated blocks (67%) in trial A, and 11 inoculated blocks (92%) in trial B. The total area of the crop affected by cobweb was 30% in inoculated blocks in trial A and 45% in trial B. The noninoculated blocks remained healthy. Compared with the noninoculated control blocks, a 10.7% decrease in yield of mushrooms was observed in trial A and 9.1% in trial B. Previously, C. dendroides was the only known causal agent of cobweb in Spain. To our knowledge, this is the first report of C. mycophilum causing cobweb in white button mushroom in Spain, although the disease and causal agent were previously reported on cultivated king oyster mushroom (Pleurotus eryngii) in Spain (3). References: (3) C.-G. Back et al. J. Gen. Plant Pathol. 76:232, 2010. (1) M. Gardes and T. D. Bruns. Mol. Ecol. 2:113, 1993. (4) F. J. Gea et al. Plant Dis. 95:1030, 2011. (2) T. J. White et al. PCR Protocols. A Guide to Methods and Applications. Academic Press, San Diego, CA, 1990.
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Becker, B., and B. Schetter. "Gas Turbines Above 150 MW for Integrated Coal Gasification Combined Cycles (IGCC)." Journal of Engineering for Gas Turbines and Power 114, no. 4 (October 1, 1992): 660–64. http://dx.doi.org/10.1115/1.2906639.
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Commercial IGCC power plants need gas turbines with high efficiency and high power output in order to reduce specific installation costs and fuel consumption. Therefore the well-proven 154 MW V94.2 and the new 211 MW V94.3 high-temperature gas turbines are well suited for this kind of application. A high degree of integration of the gas turbine, steam turbine, oxygen production, gasifier, and raw gas heat recovery improves the cycle efficiency. The air use for oxygen production is taken from the gas turbine compressor. The N2 fraction is recompressed and mixed with the cleaned gas prior to combustion. Both features require modifications of the gas turbine casing and the burners. Newly designed burners using the coal gas with its very low heating value and a mixture of natural gas and steam as a second fuel are developed for low NOx and CO emissions. These special design features are described and burner test results presented.
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Leontiev, D. S., I. I. Kleshchenko, A. D. Shalyapina, and M. M. Mansurova. "Technology of water shut-off treatment in the gas well using coiled tubing." Oil and Gas Studies, no. 6 (January 15, 2021): 75–85. http://dx.doi.org/10.31660/0445-0108-2020-6-75-85.
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In the modern practice of gas field operation, there is a problem associated with the inflow of bottom water to the bottom hole of the well. One of the ways to solve this urgent problem is the introduction of water isolation technologies in the development of gas fields and the use of special compositions and technological equipment for pumping liquids into the watered layers of gas wells. The article deals with the application of a set of special technological measures, such as installation of surface equipment for working in a gas well using coiled tubing, descent of a flexible pipe through a column of pump and compressor pipes with a packer, construction of an inflatable packer, as well as the use of a selective water-insulating composition of the well by pumping it through existing perforation channels in the casing string. Liquids based on ethyl silicate create a kind water shut-off screen between the gas- saturated and water-saturated parts of the gas well formation.
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Yao, Wen Jin, Xiao Ming Wang, and Wen Bin Li. "Effect of Metal Powder on Blast Power of the Low Collateral Damage Ammunition." Advanced Materials Research 97-101 (March 2010): 547–51. http://dx.doi.org/10.4028/www.scientific.net/amr.97-101.547.
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Traditional blast ammunition has a steel casing which turns into dangerous fragments after detonation. These steel fragments may kill civilians outside of the target. In order to adapt the need of fighting in an urban environment without hurting innocent bystanders in the process, one new kind of low collateral damage ammunition is put forward. The configuration and operational principle of this ammunition are introduced. From theoretical analysis it can be found the blast power is mainly determined by the metal powder. The effect of the metal powder’s type and magnitude on blast power is studied from static explosion test. In the test the overpressure curve is measured by the pressure sensor. The killing radius is computed from the sector target using the 25mm deal board. The initial casting velocity of the metal powder is obtained from the high speed photography. The results show tungsten powder is suitable for the low collateral damage ammunition, its diameter is about 50um. In this circumstance this ammunition can reduce collateral damage, however the damage effect is higher in the smaller area.
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Fang, Qin, Dong Liangliang, Tang Shiguo, Lei Qinglong, Zhu Qing, Yang Mei, Zhu Xiaohua, and Hong Yukui. "Analysis and application of cleaning tool structure in negative pressure reverse circulating wellbore." Advances in Mechanical Engineering 12, no. 8 (August 2020): 168781402093859. http://dx.doi.org/10.1177/1687814020938596.
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Sediments frequently appear at the bottom of oil and gas wells in the bottom of carbonate rocks during completion or production, seriously affecting the productivity. In order to solve the wellbore cleaning problem, this article applies the Bernoulli equation theory method, the finite element method based on the standard turbulence model and the laboratory test to verify a kind of negative pressure wellbore cleaning tool which can establish local reverse circulation under the action of high-pressure water jet and salvage the bottom debris. Through the numerical analysis of the cleaning tool structure, it is found that the wall face diameter is at least two times of the nozzle hole diameter to effectively play the cleaning tool performance. If the total area of nozzle outlet is 48π mm2, the cleaning tool fishing capacity of six nozzle structures is improved the most. The analysis of the adaptability of the cleaning tool shows that the cleaning tool with an outer diameter of 104 mm is most suitable for the casing shaft with an inner diameter of 127.3 mm. The cleaning tool was applied to the field operation and successfully cleaned the wellbore, effectively increasing the wellbore productivity.
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Iváncsics, J., and A. Z. Kovács. "Zusammensetzung des Kolostrums bei einigen Fleischrinderrassen in Abhängigkeit von der nach dem Abkalben vergangenen Zeit." Archives Animal Breeding 42, no. 1 (October 10, 1999): 17–32. http://dx.doi.org/10.5194/aab-42-17-1999.
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Abstract. Title of the paper: The composition of the Colostrum of some beef cattle breeds according to time of post partum. This research was carried out to investigate the changes of main components of Colostrum with 0–4 days after calving by five beef cattle breds, kept in Hungary. After calving and 24 hours later beef cattle breeds had higher dry matter content in Colostrum compared to that of dairy breeds; but the dairy breeds were superior to the beef cattle breeds from the second day. This relates to the Colostrum of the beef cattle breeds more concentrated than the dairy breeds during the first 24 hours but they reached that values eariier which were characteristic to the normal milk. Examining the protein content of Colostrum there were similar tendencies in change of dry matter content with difference that the protein content of Colostrum of beef cattle breeds was higher than that of the dairy breeds between the 2nd and 4th days, too. On the first and the second days the fat content of Colostrum of the sucklers decreased which was related to the higher dilution in beef cattle breeds. The sugar content of Colostrum of the beef cattle breeds has increased between the calving and the 4th day post partum, and reached the values characteristic to the normal milk – (4.8–5.0%) – on the 5th–6th day. There was not significant difference between the beef and the dairy breeds, neither in sugar nor in the ash content. The ash content of Colostrum reached the values characteristic to the normal milk, 7–8 days after calving. The whey protein and the non protein nitrogen content of Colostrum of the beef cattle breeds were higher than that ofthe dairy breeds, significantly. Decreasing of these fractions in the beef cattle breeds were more moderate than the dairy breeds as in case of the total protein content, according to time. Our calculations show that whey protein content of the beef cattle breeds reached that values which were characteristic to the normal milk, after the 5th day post partum. Not having found a decided difference in the casein content of Colostrum between the beef and the dairy breeds. The casein content of Colostrum of blonde d' Aquitaine and Limousin higher than that ofthe other kind of beef cattle breeds, which manifests itself in the ratio of whey protein and casein, too. At the same time the ratio of whey protein and casein in both Angus types differ from the other beef cattle breeds in favour of the whey protein. The calculated immunglobulüj-G values of Colostrum milked immediately after calving were usually much higher at sucklers than at the dairy breeds. This was true especially beUveen the 1st and the 4th days which was connected with the more moderate decrease of IgG fraction in the beef cattle breeds. Similarly the data of the literature the IgG content ofthe fresh milked Colostrum was determined primarily by the breed. According to our examinations this determination becomes more unimportant moving off the time of calving. The energy content of Colostrum at Black Angus and Red Angus rose among the other kind of beef cattle breeds. The average energy content ofthe Colostrum of blonde d' Aquitaine and Limousin was connected with the high protein content of their Colostrum. The energy content of Colostrum of Hungarian Simmental was the lowest.
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Reissmann, Andreas, Joachim Hauser, Ewelina Makulska-Gertruda, Loredana Tomsa, and Klaus W. Lange. "Gluten-free and casein-free diets in the treatment of autism." Functional Foods in Health and Disease 4, no. 8 (August 5, 2014): 349. http://dx.doi.org/10.31989/ffhd.v4i8.146.
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Background: Autism is a complex psychiatric disorder characterized by three core symptoms, i.e. impairments in social interaction, restricted patterns of behavior and impairments in communication. In the framework of the “opioid excess theory”, the disorder symptoms are compared to the behavioral effects of opiates. Based on this, a possible nutritional basis of autism has been proposed, hypothesizing that certain food proteins such as gluten and casein can be transformed to opioid peptides during digestion. These peptides might eventually be able to enter the blood stream and act upon the central nervous system. As a consequence, a diet low in such proteins has been hypothesized to ameliorate the behavioral symptoms of autistic children.Objective: The scope of this review was to analyze the effects of gluten-free and casein-free (GFCF) diets on children with autism, as well as to provide information concerning additional aspects related to the GFCF diet in autism.Methods: A literature search was conducted including scientific publications up until December 2013. Search results were screened for any kind of GFCF dietary intervention as well as surveys dealing with GFCF as a treatment for autism.Results: A review of survey data shows that up to 25 % of parents of affected children report on current use of a GFCF diet. The majority of identified studies evaluating GFCF diet outcomes failed to meet basic methodological standards of interventional science. Comparison of study results did not show any clear-cut results, with a substantial proportion of studies failing to show any positive dietary effect. The results of more sophisticated trials were far from equivocal and the studies differed by many methodological aspects. Some variables such as information source and trial duration seemed to affect outcome. Conclusions: Evidence for the effectiveness of the GFCF diet in the treatment of autism is sparse. Rigorous scientific evaluations partly failed to confirm therapeutic effects of the GFCF diet. These and other negative results related to the opioid excess theory weaken the underlying rationale for GFCF diet use. Nevertheless, more sophisticated investigations should be conducted in order to identify possible benefits and harms of such a dietary approach.Key words: gluten-free and casein-free diet, opioid excess theory, autism, autistic spectrum disorder, therapeutic effects, evidence base, prevalence of use
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Barroso Félix, Juliana, Lúcia de Fátima L. dos Santos, Paula Priscila Correia Costa, Bruna Pinto Coutinho, and Daniela Brízida Borga. "Cannabis sativa intoxication in a dog – a case report." Clínica Veterinária XXII, no. 126 (January 1, 2017): 46–50. http://dx.doi.org/10.46958/rcv.2017.xxii.n.126.p.46-50.
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Marijuana consists of a mixture of dried leaves and flowers of the plant Cannabis sativa. Animals are usually poisoned by accidental ingestion. The effects of the plant are associated with cannabinoids, which are not found in other plant species. An increase in poisoning cases in dogs was observed in some states of the USA. In Brazil, reports are scarce. The objective of this study is to report a case of a dog intoxicated by marijuana. The animal was admitted to the hospital with incoordination, depression, mydriasis, decreased pupillary reflex, horizontal nystagmus, opisthotonos, bradycardia, and obnubilation. The patient was hospitalized and subjected to supportive treatment, since there is no antidote for this kind of poisoning. Patient recovery took approximately 36 hours.
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Gallegos Cázares, Leticia, Armando Sánchez Martínez, and Andoni Garritz. "Enseñar ciencias en la secundaria más allá de las apariencias." Educación Química 15, no. 4 (August 25, 2018): 441. http://dx.doi.org/10.22201/fq.18708404e.2004.4.66171.
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<span>Este libro es un ejemplo raro de una traducción que sale primero a la luz, antes que la versión en el idioma original. La historia es la siguiente: Todo parte del escrito que Vanessa Barker (2000) hizo para la Royal Society of Chemistry, que consideró que había la necesidad de reunir las investigaciones sobre los errores conceptuales d e los estudiantes en química. Se hizo accesible desde el año 2000, en forma de un artículo en formato PDF, a través de la URL: http://www.chemsoc.org/networks/learnnet/miscon.htm. Allí lo consultaron los miembros del Seminario de Investigación Educativa de la Facultad de Química de la UNAM, a quienes les pareció muy adecuado realizar la traducción de ese material, para lo cual se pusieron en contacto con Vanessa Barker y con la editorial Santillana. Vanessa, quien resultó que para entonces se había casado y adquirido el nombre de Vanessa Kind, les informó que estaba llevando a cabo la actualización del escrito y que era preferible terminarl para hacer la traducción.</span>
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Skrinjar, Marija, Nevena Nemet, Ljiljana Petrovic, Slavica Veskovic-Moracanin, Ivana Cabarkapa, and Vladislava Soso. "Mycopopulations and ochratoxin A: Potential contaminants of Petrovská klobása." Zbornik Matice srpske za prirodne nauke, no. 120 (2011): 73–82. http://dx.doi.org/10.2298/zmspn1120073s.
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Petrovsk? klob?sa is traditionally produced dry fermented sausage from the area of Backi Petrovac (Vojvodina Province, Serbia) that has been protected with designation of origin (PDO) according to Serbian legislation. Contamination of this kind of sausage casings by different mould species often occur during the production process, mainly during the ripening and storage. The aim of this study was to isolate and identify moulds that contaminate ingredients used for Petrovsk? klob?sa production and its casings during different phases of ripening and storage. Sampling was done during the production process and after 2, 6, 9, 11, 14, 34, 65, 90, 120, 217 and 270 days. Total mould counts in components ranged from 1.60 (mechanically mixed filling) to 4.14 (red hot paprika powder) log10 CFU/g, while the number of moulds isolated from sausage casing surfaces ranged from 0.01 (C3 sausage, 217th day) to 1.60 (C1 sausage, 270th day) log10 CFU/cm2. After total mould counts were determined, isolates were identified and classified in five genera for components (Penicillium - 7 species; Fusarium - 2 species; Aspergillus - 1 species; Alternaria - 1 species; Verticilium - 1 species) and 3 genera for casings surfaces (Penicllium - 3 species; Aspergillus - 1 species; Eurotium - 1 species). It was appointed that 83.33% of isolated species are potential producers of toxic metabolites. The analyses of ingredients and sausages on the presence of ochratoxin A, following the ELISA method, gave the negative results.
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Zhao, Di, Thao T. Le, Lotte Bach Larsen, Yingqun Nian, Cong Wang, Chunbao Li, and Guanghong Zhou. "Interplay between Residual Protease Activity in Commercial Lactases and the Subsequent Digestibility of β-Casein in a Model System." Molecules 24, no. 16 (August 8, 2019): 2876. http://dx.doi.org/10.3390/molecules24162876.
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One of the conventional ways to produce lactose-hydrolyzed (LH) milk is via the addition of commercial lactases into heat-treated milk in which lactose is hydrolyzed throughout storage. This post-hydrolysis method can induce proteolysis in milk proteins due to protease impurities remaining in commercial lactase preparations. In this work, the interplay between lactose hydrolysis, proteolysis, and glycation was studied in a model system of purified β-casein (β-CN), lactose, and lactases using peptidomic methods. With a lactase presence, the proteolysis of β-CN was found to be increased during storage. The protease side-activities mainly acted on the hydrophobic C-terminus of β-CN at Ala, Pro, Ile, Phe, Leu, Lys, Gln, and Tyr positions, resulting in the formation of peptides, some of which were N-terminal glycated or potentially bitter. The proteolysis in β-CN incubated with a lactase was shown to act as a kind of “pre-digestion”, thus increasing the subsequent in vitro digestibility of β-CN and drastically changing the peptide profiles of the in vitro digests. This model study provides a better understanding of how the residual proteases in commercial lactase preparations affect the quality and nutritional aspects of β-CN itself and could be related to its behavior in LH milk.