Significant Influence Of Pressure Research Articles

Faktor yang Mempengaruhi Tingkat Kecurangan Karyawan PT. BUM Pabrik Perikanan Samudera Kendari

The purpose of this study is to provide empirical evidence of the influence of employee attitudes toward fraud on PT. BUM Kendari ocean fisheries, provide empirical evidence of the effect of pressure on the employee to fraud PT. BUM Kendari ocean fisheries, provide empirical evidence influence employees the opportunity to fraud at PT. BUM Kendari ocean fisheries, provide empirical evidence of the influence of employee capability to fraud at PT. BUM Kendari ocean fisheries, provide empirical evidence influence attitudes, the pressure occasion, and employee capability simultaneously to fraud on PT. BUM Kendari ocean fisheries. The population in this study were employees of PT. BUM Kendari ocean fisheries as many as 42 employees. The sampling technique using census method. Census method is sampling technique when all members of the population used as a sample. The analysis tool used is the Multiple Linear Regression Analysis. The results showed that There is a significant influence on the attitude (Rationalization) against fraud with a significance value of 0.045. There is a significant influence of pressure against fraud with a significance value of 0.008. There is a significant influence of opportunities against fraud with a significance value of 0.027. There is a significant influence on the capability of the fraud with a significance value of 0.002. There is a significant influence on the attitude (Rationalization), Pressure, opportunity and capability against fraud with a significance value of 0.009.

THE EFFECT OF PRESSURE, OPPORTUNITY, AND RATIONALIZATION ON ACADEMIC FRAUD IN STUDENTS OF THE FACULTY OF ECONOMICS

The purpose of this study was to determine the effect of pressure, opportunity, and rationalization on academic fraud on students of the Faculty of Economics, Universitas Negeri Jakarta, class of 2019. This research is a quantitative study using the survey method and using multiple regression analysis. The sample in this study were 110 students using purposive sampling. The results of this study show: (1) There is a positive and significant effect of pressure on academic fraud in students of the Faculty of Economics, Universitas Negeri Jakarta, Class of 2019. (2) There is a positive and significant effect of opportunity on academic fraud in students of the Faculty of Economics, Universitas Negeri Jakarta, Class of 2019. (3) There is a positive and significant effect of rationalization on academic fraud in students of the Faculty of Economics, Universitas Negeri of Jakarta. (4) There is a positive and significant influence of pressure, opportunity, and rationalization on academic fraud in students of the Faculty of Economics, Universitas Negeri Jakarta, Class of 2019.

Effect of Input Parameters on the Structure and Properties of Castings Obtained via Crystallization under Pressure

The technology of casting with crystallization under pressure-squeeze casting belongs to unconventional pressure-casting methods. The melt or material in a semi-solid state is pressed under pressure until the casting solidifies completely. The input parameter, whose influence was mainly observed in this paper, is the state of the material entering the filling process. The alloys were in a molten and semi-solid state. The influence of casting thickness from 3.15 mm to 8 mm was also observed. Alloy AlSi7Mg0.3 was used because of the wide solidification interval and the significant influence of pressure during solidification. Consequently, alloy AlSi12 was subjected to experimental work because processing in the semi-solid state is not sufficiently examined for this material. A significant influence of the cooling rate in different cross-sections on the structure and mechanical properties of castings made using squeeze casting technology was confirmed. The difference in mechanical properties was approximately 35% for both eutectic and hypoeutectic alloys. When processed in a semi-solid state, it was confirmed that the network of dendrites has a significant influence on the filling of the mold cavity. The paper also focuses on the effect of input material morphology on the final product properties. The change in morphology was achieved by metallurgical intervention, thermal and technological processing.

Pengaruh Tekanan, Kesempatan, Rasionalisasi, Kemampuan, dan Arogansi terhadap Perilaku Kecurangan Akademik Mahasiswa Pendidikan Ekonomi

The problem in this study is that students often engage in academic cheating behaviors while pursuing their studies in college. This research is conducted to determine the influence of pressure, opportunity, rationalization, capability, and arrogance on academic cheating behavior among students majoring in Economics Education from the 2020, 2021, and 2022 cohorts, both partially and simultaneously. This study utilizes a quantitative method in the form of a survey with an explanatory survey design. The population of this study consists of all students from the Faculty of Teacher Tarining and Education, from the 2020, 2021, and 2022 cohorts. The sampling technique used is Probability Sampling with the Proportionate Startified Sampling method, which resulted in sample size of 188 students. Data collection is done through questionnaires, and data analysis is conducted using the SPSS 26.0 for Windows software. The research findings are as follows: 1) There is significant influence of pressure on academic cheating behavior with a significance value of 0,046. 2) There is a significant influence of opportunity on academic cheating behavior with a significance value of 0,001. 3) There is a significant influence of rationalization on academic cheating behavior with a significance value of 0,000. 4) There is a significant influence of capability on academic cheating behavior with a significance value of 0,000. 5) There is a significant influence of arrogance on academic cheating behavior with a significance value of 0,030.

The effect of pressure variation on the elasticity and thermodynamic properties of CaLiF3 for low birefringent lens materials

In this study, the Full-Potential Linearized Augmented Plane Wave (FP-LAPW) method is employed to calculate the effect of pressure variation (0–50 GPa) on the electronic structure, elastic parameters, mechanical durability, and thermodynamic aspects of calcium based CaLiF3 in combination with the Quasi-harmonic Debye model where the phonon effects are considered. A prominent decrease in the value of the lattice constant and the bond lengths is observed with an increase in pressure. The significant influence of pressure on a wide range of elastic parameters and their related mechanical properties has been discussed in detail to utilize this material in low birefringence lens fabrication technology. The transition from brittle to ductile behavior is also observed with an increase in pressure. Moreover, a successful prediction of the important thermodynamic aspects, such as the volume expansion coefficient (α), Debye temperature (θD), and heat capacities (Cp and Cv), is also done in wide pressure and temperature ranges.

Techno-Economics of Biocarbon Production Processes under Norwegian Conditions

This work deals with techno-economic analysis studies in the context of production of various grade biocarbon for utilization as reducing agents in metallurgical industries. A detailed process design was developed for wood handling, debarking, chipping, drying, carbonization, and combined heat and power production using Aspen Plus for 10 ton per day (TPD) biocarbon output. A Fortran based user defined function was developed for the carbonization process by considering pressure, temperature and particle size effects using a Box–Behnken approach. The empirical correlation indicates a strong influence of temperature as well as a significant influence of pressure and particle size on the biocarbon yield and its fixed carbon content. Fixed carbon content increases with temperature, pressure, and particle size. Mass and energy balance results from Aspen Plus provided necessary results for cost parametrization considering three influencing parameters: temperature, pressure, and plant scale on the equipment costs...

Oil extraction from enriched Spirulina platensis microalgae using supercritical carbon dioxide

This article deals with the extraction of neutral lipids and antioxidants from enriched Spirulina platensis microalgae using supercritical carbon dioxide (CO2), and more particularly with the influence of experimental conditions on extraction yields and kinetics at laboratory and pilot scales. Preliminary studies were carried out at laboratory scale before the establishment of an experimental design: extraction curves were plotted for different autoclave fill rates, and under different conditions of pressure and temperature. Using a Response Surface Methodology, the significant influence of pressure on extraction efficiency was highlighted. Surface responses showed that, in the studied experimental field, mass loss increased when pressure, temperature, and CO2/microalgae mass ratio increased. Extract analyses showed that oil extracts contained chlorophylls a and b, as well as β-carotene. Finally, larger-scale experiments were carried out with batches of 1 and 50kg (scale-factors of 100 and 5000, respectively) and the results were consistent with those obtained at laboratory scale.

Evolution of the amorphous fraction of PEEK during annealing at atmospheric and high pressure above the glass transition temperature

ABSTRACTThe constrained fraction of the amorphous phase of semi‐crystalline polymers is in an out‐of‐equilibrium state so that "physical aging"‐like features can be observed (e.g., by calorimetry) even above the glass transition temperature. This was already addressed in the literature in several semi‐crystalline polymers at atmospheric pressure. Despite the well‐known influence of pressure on molecular mobility, the pressure‐sensitivity of these microstructure rearrangements has never been tackled. This study focuses on annealing in highly pressurized Poly‐Ether‐Ether‐Ketone (PEEK), compared with atmospheric pressure. The phenomenon is tracked by ex‐situ Differential Scanning Calorimetry (DSC). A significant influence of pressure is evidenced, without any complete equivalence with temperature. Indeed, pressure seems to confine rearrangements within spatially limited domains. The stability and coexistence of reorganization processes upon successive annealings is also investigated. Finally, relationships between constrained and free amorphous phase rearrangements are discussed via the different glass transition shifts observed after atmospheric or high pressure annealing. © 2013 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 130: 1148‐1157, 2013

Experimental investigation of high temperature and high pressure coal gasification

Pyrolysis and gasification behavior is analyzed at operation conditions relevant to industrial scale entrained flow gasifiers. A wire mesh reactor and the Pressurized High Temperature Entrained Flow Reactor (PiTER) are used to measure volatile yield of Rhenish lignite, a bituminous coal and German anthracite at high temperature and high pressure. In the wire mesh reactor at 1000 °C a significant influence of pressure on volatile yield is observed. For lignite the volatile yield (daf) decreases from 57 wt% at atmospheric pressure to 53 wt% at 5.0 MPa. In the same pressure interval the volatile yield of the bituminous coal strongly decreases, whereas no significant influence of pressure on the volatile yield of anthracite is detected. In entrained flow experiments (PiTER) at higher temperature and 0.5 MPa an enhanced devolatilization of the lignite is observed. At 1200 °C, the maximum volatile yield is 62 wt% and it increases to 67 wt% at 1400 °C. In entrained flow gasification experiments with Rhenish lignite a high level of conversion is measured at atmospheric pressure and at 0.5 MPa. At both pressures, coal conversion increases with temperature and residence time. The highest conversion of 96 wt% is achieved at a particle residence time of 1.3 s, at a temperature of 1600 °C, and a pressure of 0.5 MPa. The experimental results show a large influence of operation parameters on pyrolysis and gasification behavior of Rhenish lignite. The volatile release in the pyrolysis stage and the high level of conversion after a short residence time indicate that Rhenish lignite is suitable for gasification in an entrained flow reactor. The reactivities of char samples that are collected from the hot reaction zone of the PiTER are measured in a pressurized thermogravimetric analyzer (PTGA) at lower temperature (600–850 °C). The pyrolysis temperature in the entrained flow experiments significantly influences the reaction rate in the PTGA at lower temperature. With increasing pyrolysis temperature (1200–1600 °C) a continuous loss of reactivity is observed.

Analysis of Sintering Parameters by SPS on Cemented Carbide

The aim is to analyze the influence of two sintering process parameters concerning the compact densification of WC-Co. The input variables studied were uniaxial pressure (40 and 60 MPa) and holding time (1 and 3 minutes). The output variables monitored were relative density, microstructural features, besides online monitoring of dynamics of sintering. The samples were sintered in a Dr. Sinter-Syntex machine of Spark Plasma Sintering (SPS), which allows heating rate greater than conventional sintering techniques, with the advantage of lower temperature, time and energy consumption. The powder used was a compaction residue of grade K (with content between 3 and 12%Co). The results showed significant influence of pressure on the density and percentage of the porous area; however, the process parameters did not affect the grain size.

Simultaneous determination of the electronic andchemical structures in CeNixCu5-x at highpressures

Combined x-ray diffraction and x-ray absorption results arepresented on the substitutional Ce valence transition inCeNixCu5-x as a function of applied externalpressure. No significant influence of pressure on the valencein the near-transition region of x is found in the crystalstructure or in the Ce K-edge position. This result isdiscussed in the context of valence instabilities inintermetallic Ce compounds.

Effect of physical refining on selected minor components in vegetable oils

The final quality of vegetable oils is largely determined by the deodorization process. From an organoleptic point of view, oils should be light in color with a bland taste and a good cold and/or oxidative stability. Today, however, more and more attention is paid to the real nutritional quality. Oils should contain low trans fatty acid levels, low polymeric triglycerides, and secondary oxidation products and at the same time being rich in natural antioxidants. In order to comply to these new quality requirements, the deodorization technology has been modified substantially. Mathematical models were established describing the influence of different process parameters (time, temperature, steam, and pressure) on trans fatty acid formation, tocopherol stripping, and production of oxidized and polymeric triacylglycerides during physical refining of soybean oil. Trans fatty acid (TFA) formation was influenced only by time and temperature. No significant influence of pressure or sparging steam could be observed. Models expressing the relative degree of cis/trans-isomerization of linoleic (DI18:2) and α-linolenic acid (DI18:3) could be extrapolated to other oils and deodorizer designs. Tocopherol removal was mainly influenced by process temperature and sparging steam. Additionally, tocopherol retention seemed to be dependent on the deodorizer design (steam injection geometry and sparging steam distribution). During physical refining, oxidized and polymerized triacylglycerols were not significantly influenced by any of the investigated process parameters. Industrially, process conditions are adapted to minimize trans fatty acid formation and maximize tocopherol retention. These goals can be achieved in a so-called DUAL TEMPcopy; deodorizer. Auswirkungen der physikalischen Raffination auf ausgewählte Minorkomponenten in pflanzlichen Ölen.Die endgültige Qualität pflanzlicher Öle wird zu großen Teilen durch den Desodorierprozeß bestimmt. Vom sensorischen Standpunkt aus sollten Öle von heller Farbe sein, einen milden Geschmack und eine gute Kälte und/oder Oxidationsstabilität haben. Heutzutage wird jedoch mehr und mehr Wert auf die wirkliche die Ernährung betreffende Qualität gelegt. Öle sollten niedrige trans-Fettsäuregehalte, wenig polymere Triglyceride und sekundäre Oxidationsprodukte haben und gleichzeitig reich an natürlichen Antioxidantien sein. Um diesen neuen Qualitätsanforderungen zu entsprechen, wurde die Desodorierungstechnologie grundlegend verändert. Mathematische Modelle wurden entwickelt, die den Einfluß von bestimmten Prozeßparametern (Zeit, Temperatur, Dampf und Druck) auf die trans-Fettsäurebildung, Tocopherol-Stripping und die Produktion von oxidierten und polymeren Triacylglyceriden während der physikalischen Raffination beschreiben sollten. Trans-Fettsäurebildung wurde nur durch Zeit und Temperatur beeinflußt. Es konnte kein signifikanter Einfluß von Druck oder Zerstäuberdampf festgestellt werden. Modelle, die den relativen Anteil der cis/trans-Isomerisierung von Linol-(Dl18:2) und α-Linolensäure beschreiben, konnten für andere Öle und Desodorierpläne extrapoliert werden. Die Tocopherolbeseitigung wurde hauptsächlich durch die Prozeßtemperatur und den Zerstäuberdampf beeinflußt. Außerdem schien die Tocopherolbeseitigung von dem Desodorierplan abzuhängen (Dampfinjektionsgeometrie und Zerstäuberdampfverteilung). Während der physikalischen Raffination wurden die oxidierten und polymeren Triacylglycerole nicht signifikant beeinflußt durch die untersuchten Prozeßparameter. Die Prozeßbedingungen werden angepaßt, um im industriellen Maßstab die trans-Fettsäurebildung und die Tocopherolzurückhaltung zu maximieren. Diese Ziele können mit einem sogenannten DUAL TEMP© Desodorierer erreicht werden.

The effect of pressure on leucine and thymidine incorporation by free-living bacteria and by bacteria attached to sinking oceanic particles

The effect of pressure on upper ocean free-living bacteria and bacteria attached to rapidly sinking particles was investigated through studying their ability to synthesize DNA and protein by measuring their rate of 3H-thymidine and 3H-leucine incorporation. Studies were carried out on samples from the NE Atlantic under the range of pressures (1–430 atm) encountered by sinking aggregates during their journey to the deep-sea bed. Thymidine and leucine incorporation rates per bacterium attached to sinking particles from 200 m were about six and ten times higher, respectively, than the free-living bacterial assemblage. The ratio of leucine incorporation rate per cell to thymidine incorporation rate per cell was significantly different between the larger attached (18.9:1) and smaller free-living (10.4:1) assemblages. The rates of leucine and thymidine incorporation decreased exponentially with increasing pressure for the free-living and linearly for attached bacteria, while there was no significant influence of pressure on cell numbers. At 100 atm leucine and thymidine incorporation rate per free-living bacterium was reduced to 73 and 20%, respectively, relative to that measured at 1 atm. Pressure of 100 atm reduced leucine and thymidine incorporation per attached bacterium to 94 and 70%, and at 200 atm these rates were reduced to 34 and 51%, respectively, relative to those measured at 1 atm. There was no significant uncoupling of thymidine and leucine incorporation for either the free-living or attached bacterial assemblages with increasing pressure, indicating that the processess of DNA and protein synthesis may be equally affected by increasing pressure. It is therefore unlikely that bacteria, originating from surface waters, attached to rapidly sinking particles play a role in particle remineralization below approximately 1000–2000 m. These results may help to explain the occurrence of relatively fresh aggregates on the deep-sea bed that still contain sufficient organic carbon to fuel the rapid growth of benthic micro-organisms; they also indicate that the effect of pressure on microbial processes may be important in oceanic biogeochemical cycles.

Apparent Dynamic Coefficient of Friction of Corn on Galvanized Steel Bin Wall Material

Tests were conducted to study sources of variation in the dynamic coefficient of friction of corn on galvanized steel. The factors analyzed were grain moisture content, grain pressure, and number of trials. The coefficient of friction was statistically significantly lower for 12% (w.b.) moisture content corn than for 16% (w.b.) moisture content corn. The coefficient of friction decreased with repeated sliding contact between metal and grain for all pressures and moisture contents. No significant influence of pressure on the dynamic coefficient of friction was seen.

Laboratory study of the electrical and hydraulic properties of rocks under simulated reservoir conditions

Experimental results are presented for resistivity and permeability measurements on clay-free sandstone and shaly synthetic rock samples at simulated reservoir conditions of pressure and temperature. Some details of a novel multi-sample high pressure and temperature rock testing system and a new technique for making synthetic shaly samples are also presented. A significant influence of pressure and temperature on both the electrical and the hydraulic properties of sandstone and synthetic rocks has been observed. The combined effect of pressure and temperature on the electrical properties of the sandstones tested is approximately the sum of their individual effects. The effect of clay minerals on the electrical and hydraulic properties of rocks has also been investigated. The experimental results obtained lead to a better understanding of the mechanisms of the pressure and temperature effects on the geophysical properties of sedimentary rocks.

Potassium catalysed gasification of Kentucky oil shale char

The steam gasification of a Kentucky oil shale char has been studied in a semi-batch fixed bed reactor. The effects of temperature (973–1173 K), catalyst loading (0–15% K 2CO 3) and pressure (up to 0.65 MPa) on the gasification rates and make-gas composition have been determined. Although gasification rates were increased by a factor of about three in the presence of 10% K 2CO 3, they were still significantly lower than those previously measured with western shale chars. The reason for this could be attributed to the relatively high hydrogen concentrations produced in the fixed-bed configuration since severe hydrogen inhibition has been previously reported for a similar shale char. There was no significant effect of the potassium catalysis on either the make-gas composition or the quantities of sulphur released during gasification. The only significant influence of pressure was to increase the methane make and this was independent of the catalyst loading.