Log in

Relevant bibliographies by topics / With focus on Brayton’s cycle / Journal articles

To see the other types of publications on this topic, follow the link: With focus on Brayton’s cycle.

Journal articles on the topic 'With focus on Brayton’s cycle'

Author: Grafiati

Published: 4 June 2021

Last updated: 6 February 2022

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the top 50 journal articles for your research on the topic 'With focus on Brayton’s cycle.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Browse journal articles on a wide variety of disciplines and organise your bibliography correctly.

1

Forsberg, Charles W., Per F. Peterson, and Haihua Zhao. "High-Temperature Liquid-Fluoride-Salt Closed-Brayton-Cycle Solar Power Towers." Journal of Solar Energy Engineering 129, no. 2 (July 8, 2006): 141–46. http://dx.doi.org/10.1115/1.2710245.

Full text

Abstract:

Liquid-fluoride-salt heat transfer fluids are proposed to raise the heat-to-electricity efficiencies of solar power towers to about 50%. The liquid salt would deliver heat from the solar furnace at temperatures between 700°C and 850°C to a closed multireheat Brayton power cycle using nitrogen or helium as the working fluid. During the daytime, hot salt may also be used to heat graphite, which would then be used as a heat storage medium to make night-time operations possible. Graphite is a low-cost high-heat-capacity solid that is chemically compatible with liquid fluoride salts at high temperatures. About half the cost of a solar power tower is associated with the mirrors that focus light on the receiver, and less than one-third is associated with the power cycle and heat storage. Consequently, increasing the efficiency by 20–30% has the potential for major reductions in the cost of electricity. Peak temperatures and efficiencies of current designs of power towers are restricted by (1) the use of liquid nitrate salts that decompose at high temperatures and (2) steam cycles in which corrosion limits peak temperature. The liquid-fluoride-salt technology and closed Brayton power cycles are being developed for high-temperature nuclear reactors. These developments may provide the technology and industrial basis for an advanced solar power tower.

APA, Harvard, Vancouver, ISO, and other styles

2

Khalatov, A. A., S. D. Severin, P. I. Brodetsky, and V. S. Maisotsenko. "Brayton’s subatmospheric inverse cycle with regeneration of output heat by Maisotsenko’s cicle." Reports of the National Academy of Sciences of Ukraine, no. 1 (January 20, 2015): 72–79. http://dx.doi.org/10.15407/dopovidi2015.01.072.

Full text

APA, Harvard, Vancouver, ISO, and other styles

3

Anonymous. "New focus for Global Biogeochemical Cycle." Eos, Transactions American Geophysical Union 71, no. 45 (1990): 1775. http://dx.doi.org/10.1029/eo071i045p01775-01.

Full text

APA, Harvard, Vancouver, ISO, and other styles

4

Randle, Jason M., Mirella L. Stroink, and Connie H. Nelson. "Addiction and the adaptive cycle: A new focus." Addiction Research & Theory 23, no. 1 (July 17, 2014): 81–88. http://dx.doi.org/10.3109/16066359.2014.942295.

Full text

APA, Harvard, Vancouver, ISO, and other styles

5

Yi, Chuixiang, Elise Pendall, and Philippe Ciais. "Focus on extreme events and the carbon cycle." Environmental Research Letters 10, no. 7 (July 1, 2015): 070201. http://dx.doi.org/10.1088/1748-9326/10/7/070201.

Full text

APA, Harvard, Vancouver, ISO, and other styles

6

Kim, Hyung Chul, Timothy J. Wallington, Sherry A. Mueller, Bert Bras, Tina Guldberg, and Francisco Tejada. "Life Cycle Water Use of Ford Focus Gasoline and Ford Focus Electric Vehicles." Journal of Industrial Ecology 20, no. 5 (August 27, 2015): 1122–33. http://dx.doi.org/10.1111/jiec.12329.

Full text

APA, Harvard, Vancouver, ISO, and other styles

7

LEVINE, E. "Cell cycle and development: focus on organogenesis and differentiation." Seminars in Cell & Developmental Biology 16, no. 3 (June 2005): 383. http://dx.doi.org/10.1016/j.semcdb.2005.02.003.

Full text

APA, Harvard, Vancouver, ISO, and other styles

8

Redmond, T. Michael. "Focus on Molecules: RPE65, the visual cycle retinol isomerase." Experimental Eye Research 88, no. 5 (May 2009): 846–47. http://dx.doi.org/10.1016/j.exer.2008.07.015.

Full text

APA, Harvard, Vancouver, ISO, and other styles

9

Sur, Malini. "Life Cycle." Transfers 7, no. 1 (March 1, 2017): 130–36. http://dx.doi.org/10.3167/trans.2017.070110.

Full text

Abstract:

Life Cycle ethnographically and visually documents the everyday use of bicycles among Kolkata’s city dwellers. Winding through the city’s congested thoroughfares and narrow by-lanes, we follow daily wageworkers, including migrants from eastern India, environmentalists, teachers, and activists, who cycle for a living. In this documentary (forty-two minutes) and the broader ethnographic project within which it is situated, I investigate how cycling mediates people’s changing relationships to cities in South Asia. Kolkata (formerly Calcutta), the largest city in eastern India, is the primary focus of Life Cycle. This city has 1.68 million cyclists, records 2.5 million cycle trips a day, has the least amount of road space (6 percent) in metropolitan India, and has the second highest air pollution level. By 2017, traffic regulations prohibited cycling on seventy city roads.

APA, Harvard, Vancouver, ISO, and other styles

10

Pingguang, Zhang, and Cai Suilin. "Quadratic systems with a weak focus." Bulletin of the Australian Mathematical Society 44, no. 3 (December 1991): 511–26. http://dx.doi.org/10.1017/s0004972700030008.

Full text

Abstract:

In this paper we study the number and the relative position of the limit cycles of a plane quadratic system with a weak focus. In particular, we prove the limit cycles of such a system can never have (2, 2)-distribution, and that there is at most one limit cycle not surrounding this weak focus under any one of the following conditions:(i) the system has at least 2 saddles in the finite plane,(ii) the system has more than 2 finite singular points and more than 1 singular point at infinity,(iii) the system has exactly 2 finite singular points, more than 1 singular point at infinity, and the weak focus is itself surrounded by at least one limit cycle.

APA, Harvard, Vancouver, ISO, and other styles

11

Hunter, Ian. "RISK, PERSISTENCE and FOCUS: A LIFE CYCLE OF THE ENTREPRENEUR." Australian Economic History Review 45, no. 3 (November 2005): 244–72. http://dx.doi.org/10.1111/j.1467-8446.2005.00138.x.

Full text

APA, Harvard, Vancouver, ISO, and other styles

12

Jacobsen, Kivin, Anja Groth, and Berthe M. Willumsen. "Ras-inducible immortalized fibroblasts: focus formation without cell cycle deregulation." Oncogene 21, no. 19 (May 2002): 3058–67. http://dx.doi.org/10.1038/sj.onc.1205423.

Full text

APA, Harvard, Vancouver, ISO, and other styles

13

Kinnibrugh, Tiffany, Kamila Wiaderek, Olaf Borkiewicz, Nathalie Pereira, Glenn Amatucci, Peter Chupas, and Karena Chapman. "Electrochemical Conversion: Beyond the First Cycle." Acta Crystallographica Section A Foundations and Advances 70, a1 (August 5, 2014): C361. http://dx.doi.org/10.1107/s2053273314096387.

Full text

Abstract:

Conversion based electrode materials offer increased energy storage compared to conventional intercalation materials due to the multiple electrons that reacts per metal ion. However, loss in capacities upon repeated cycling has limited the development of this technology for commercial application. Most structural studies focus on the first discharge-charge cycle [1,2,3]. To understand the loss in capacities with repeated cycling, studies must be extended beyond the first cycle. In conversion reactions, large structural transformations occur such that the electrode is reduced to the nanoscale. Pair distribution function (PDF) analysis is well suited to characterize the structural changes occurring in such nanomaterials. Conversion based iron fluorides (FeF3, FeF2, and FeOF) have been a focus of both structural and mechanistic studies [1,2,3]. An in-depth PDF analysis of what happens beyond the first cycle will be presented for these.

APA, Harvard, Vancouver, ISO, and other styles

14

Misumi, Kazuhiro, and Daisuke Tsumune. "Current status and issues of marine biogeochemical cycle models with a focus on the iron biogeochemical cycle." Oceanography in Japan 26, no. 3 (May 15, 2017): 95–111. http://dx.doi.org/10.5928/kaiyou.26.3_95.

Full text

APA, Harvard, Vancouver, ISO, and other styles

15

Tortorella, Guilherme Luz, Samanta Viana, and Diego Fettermann. "Learning cycles and focus groups." Learning Organization 22, no. 4 (May 11, 2015): 229–40. http://dx.doi.org/10.1108/tlo-02-2015-0008.

Full text

Abstract:

Purpose – This study aims to propose a complementary method to the A3 information collection, data analysis and capturing and sharing knowledge to facilitate problem solving in a general framework. The incorporation of this method minimizes the difficulties identified in the literature focused on continuous improvement of processes. The method comprises combining triangulation techniques utilizing focus groups for a survey of qualitative data and the approach called Look – Ask – Model – Discuss – Act (LAMDA), which was originally designed for cycles of knowledge creation applied in product development processes. Design/methodology/approach – The methodology proposed in this work follows the A3 report approach including focus groups’ techniques in the planning step and problem analysis and the use of the LAMDA learning cycle, aiming to fill the gaps in A3 method. Therefore, the methodology includes five macro steps, which are divided into smaller steps. Note that the inclusion of the LAMDA learning cycle in the A3 report is called A3LAMDA. In addition, macro steps from 1 to 4 belong to “knowledge creation” step and macro step 5 deals with the “Capture of knowledge” step. Along the proposed methodology application, greater focus will be given to techniques incorporated in the A3 report, as they represent the main contribution of this method. Findings – The proposed approach to the A3 report was more concise and comprehensive, allowing different views and perspectives to be considered to understand the problem and find solutions through the focus groups method. In addition, the development of a structured questionnaire for the interviews encouraged the participants to present their opinions regarding the problem hypotheses. The use of the LAMDA learning cycle was essential to capture and share the knowledge acquired during the problem-solving process. It allowed not only the reflection on the aspects that have either worked or not but also the understanding of how to do the next work differently. Originality/value – This study aims to propose a complementary method to the A3 information collection, data analysis and capturing and sharing knowledge to facilitate problem solving in the general framework. The incorporation of this method minimizes the difficulties identified in the literature that focused on continuous improvement of processes.

APA, Harvard, Vancouver, ISO, and other styles

16

Barjoveanu, George, Iulia Maria Comandaru, Nicolae Peiu, Simona-Andreea Ene, and Carmen Teodosiu. "LIFE CYCLE ASSESSMENT OF WINE: FOCUS ON WATER USE IMPACT ASSESSMENT." Environmental Engineering and Management Journal 11, no. 3 (2012): 533–43. http://dx.doi.org/10.30638/eemj.2012.066.

Full text

APA, Harvard, Vancouver, ISO, and other styles

17

Bhattacharya, Kunal, Asim Ghosh, Daniel Monsivais, Robin I. M. Dunbar, and Kimmo Kaski. "Sex differences in social focus across the life cycle in humans." Royal Society Open Science 3, no. 4 (April 2016): 160097. http://dx.doi.org/10.1098/rsos.160097.

Full text

Abstract:

Age and gender are two important factors that play crucial roles in the way organisms allocate their social effort. In this study, we analyse a large mobile phone dataset to explore the way life history influences human sociality and the way social networks are structured. Our results indicate that these aspects of human behaviour are strongly related to age and gender such that younger individuals have more contacts and, among them, males more than females. However, the rate of decrease in the number of contacts with age differs between males and females, such that there is a reversal in the number of contacts around the late 30s. We suggest that this pattern can be attributed to the difference in reproductive investments that are made by the two sexes. We analyse the inequality in social investment patterns and suggest that the age- and gender-related differences we find reflect the constraints imposed by reproduction in a context where time (a form of social capital) is limited.

APA, Harvard, Vancouver, ISO, and other styles

18

Burns, Tim. "Vinyl news focus. European Commission weighs in on vinyl's life-cycle." Journal of Vinyl and Additive Technology 10, no. 3 (2004): 107–8. http://dx.doi.org/10.1002/vnl.20016.

Full text

APA, Harvard, Vancouver, ISO, and other styles

19

Rahikainen, Moona, Sara Alegre, Andrea Trotta, Jesús Pascual, and Saijaliisa Kangasjärvi. "Trans‐methylation reactions in plants: focus on the activated methyl cycle." Physiologia Plantarum 162, no. 2 (October 13, 2017): 162–76. http://dx.doi.org/10.1111/ppl.12619.

Full text

APA, Harvard, Vancouver, ISO, and other styles

20

Beccarini, A. "Interest Rates and Business Cycle Fluctuations: A Focus on Higher Moments." Studies in Economics and Econometrics 32, no. 2 (August 1, 2008): 85–106. http://dx.doi.org/10.1080/10800379.2008.12106452.

Full text

APA, Harvard, Vancouver, ISO, and other styles

21

Langston, Lee S. "Focus on Fans." Mechanical Engineering 132, no. 08 (August 1, 2010): 51. http://dx.doi.org/10.1115/1.2010-aug-7.

Full text

Abstract:

This article discusses ongoing research in the area of turbofans used in jet engines. P&W’s gear facilities in Middletown Connecticut have been developing the fan gearbox over a period of 20 years. The company has a long history of gearbox experience associated with their very popular turboprop gas turbines at Pratt & Whitney Canada. Field tests have shown that the geared turbofan has a much lower level of noise. Currently, some airlines have as much as 35–60% of their operating costs in jet fuel use. If the geared fan engine does indeed significantly reduce fuel use, this improvement in fan performance will be hard for the competition to beat. Another way to improve fan performance is to change the pitch of fan blades, during an aircraft flight cycle. Rotating Composite Technologies, a small firm in Kensington, Conn. has also come up with a unique patented design for the variable pitch fan that promises to overcome the deficiencies of those tested in the 1990s.

APA, Harvard, Vancouver, ISO, and other styles

22

Leung, B. H., and D. Mcleish. "Phase Noise of a Class of Ring Oscillators Having Unsaturated Outputs With Focus on Cycle-to-Cycle Correlation." IEEE Transactions on Circuits and Systems I: Regular Papers 56, no. 8 (August 2009): 1689–707. http://dx.doi.org/10.1109/tcsi.2008.2008284.

Full text

APA, Harvard, Vancouver, ISO, and other styles

23

LEONOV, G. A. "FOUR NORMAL SIZE LIMIT CYCLES IN TWO-DIMENSIONAL QUADRATIC SYSTEMS." International Journal of Bifurcation and Chaos 21, no. 02 (February 2011): 425–29. http://dx.doi.org/10.1142/s0218127411028532.

Full text

Abstract:

The existence criterion of three normal size limit cycles in quadratic systems with a weak focus of first order is obtained. Further, giving a finite disturbance for weak focus, the fourth normal size limit cycle is obtained. Bifurcation of appearance of two limit cycles via semistable cycle is given.

APA, Harvard, Vancouver, ISO, and other styles

24

O'connor, Caroline, and Siobhan Murphy. "Novice Researchers' Reflection on Conducting a Focus Group." Journal of Perioperative Practice 19, no. 5 (May 2009): 143–47. http://dx.doi.org/10.1177/175045890901900504.

Full text

Abstract:

Focus group data collection can capture what is unknown about nurses' perceptions of routine patient care issues in clinical settings. Using Gibbs Reflective Cycle (1988) novice researchers Caroline O'Connor and Siobhan Murphy critically analysed the practicalities of conducting a focus group interview.

APA, Harvard, Vancouver, ISO, and other styles

25

Červenka, Libor. "Idealization of The Real Stirling Cycle." Journal of Middle European Construction and Design of Cars 14, no. 3 (December 1, 2016): 19–27. http://dx.doi.org/10.1515/mecdc-2016-0011.

Full text

Abstract:

Abstract The paper presents a potential idealization of the real Stirling cycle. This idealization is performed by modifying the piston movement corresponding to the ideal Stirling cycle. The focus is on the cycle thermodynamics with respect to the indicated efficiency and indicated power. A detailed 1-D simulation model of a Stirling engine is used as a tool for this assessment. The model includes real non-zero volumes of heater, regenerator, cooler and connecting pipe. The model is created in the GT Power commercial simulation software.

APA, Harvard, Vancouver, ISO, and other styles

26

Bertolo Guariento, Maria Rossana, Janine Pereira da Silva, Giovana Bertolo Guariento, Gustavo Carreiro Pinasco, Arthur Brunelli Sales, Catarina Bubach Ribeiro Alves, Lucia Helena Sagrillo Pimassoni, and Valmin Ramos-Silva. "Children and adolescents’ health on focus: Gastrointestinal injuries associated with Helicobacter pylori." REVISTA CIÊNCIAS EM SAÚDE 10, no. 4 (December 15, 2020): 117–24. http://dx.doi.org/10.21876/rcshci.v10i4.1026.

Full text

Abstract:

Objective: To describe the prevalence of Helicobacter pylori (HP) in children and adolescents, and to assess its association with lesions in the esophagus, stomach, and duodenum according to the patient’s life cycle. Methodsː A cross-sectional analytical study with children and adolescents referred to a gastroenterology service and underwent esophagogastroduodenoscopy at a hospital in Vitória, Espírito Santo, Brazil, from 2001 to 2013. Variables analyzed were the following: sex, age, macro and microscopic alterations and severity of infestation. The Chi-square and Fisher's exact tests and adjusted residue analysis were used (α = 5%). Resultsː the prevalence of infection was 24.4%. Esophagitis (29.4%) and gastritis (34.1%) were associated with HP. The life cycle was associated with esophagitis and duodenitis. Infection was associated with life cycle: infants (0.8%), preschool children (10.5%), school-aged children (16.5%), and adolescents (72.2%). The residues showed a strong association between HP and gastritis, and no association between the school-aged and esophagitis. Adolescents were the major contributors to the association between life cycle and infection, and life cycle and lesion. Conclusionsː Infection with HP was associated with esophagitis and gastritis and was higher among adolescents, who had a marked tendency to develop gastritis and a milder tendency to develop esophagitis. The tendency of developing infection and gastritis was not present in the other life cycles. Public policies focusing on promotion and protecting health, especially in vulnerable population groups, are needed.

APA, Harvard, Vancouver, ISO, and other styles

27

Diekel, Felice, Natalia Mikosch, Vanessa Bach, and Matthias Finkbeiner. "Life Cycle Based Comparison of Textile Ecolabels." Sustainability 13, no. 4 (February 6, 2021): 1751. http://dx.doi.org/10.3390/su13041751.

Full text

Abstract:

Environmental impacts of textile production increased over the last decades. This also led to an increasing demand for sustainable textiles and ecolabels, which intend to provide information on environmental aspects of textiles for the consumer. The goal of the paper is to assess selected labels with regard to their strengths and weaknesses, as well as their coverage of relevant environmental aspects over the life cycle of textiles. We applied a characterization scheme to analyse seven selected labels (Blue Angel Textiles, bluesign®, Cotton made in Africa (CMiA), Cradle to Cradle CertifiedTM, Global Organic Textile Standard (GOTS), Global Recycled Standard (GRS), VAUDE Green Shape), and compared their focus to the environmental hotpots identified in the product environmental footprint case study of t-shirts. Most labels focus on the environmental aspects toxicity, water use, and air emissions predominantly in the upstream life cycle phases of textiles (mainly garment production), whereas some relevant impacts and life cycle phases like water in textile use phase remain neglected. We found significant differences between the ecolabels, and none of them cover all relevant aspects and impacts over the life cycle. Consumers need to be aware of these limitations when making purchase decisions.

APA, Harvard, Vancouver, ISO, and other styles

28

Fırat-Karalar, Elif Nur, and Tim Stearns. "The centriole duplication cycle." Philosophical Transactions of the Royal Society B: Biological Sciences 369, no. 1650 (September 5, 2014): 20130460. http://dx.doi.org/10.1098/rstb.2013.0460.

Full text

Abstract:

Centrosomes are the main microtubule-organizing centre of animal cells and are important for many critical cellular and developmental processes from cell polarization to cell division. At the core of the centrosome are centrioles, which recruit pericentriolar material to form the centrosome and act as basal bodies to nucleate formation of cilia and flagella. Defects in centriole structure, function and number are associated with a variety of human diseases, including cancer, brain diseases and ciliopathies. In this review, we discuss recent advances in our understanding of how new centrioles are assembled and how centriole number is controlled. We propose a general model for centriole duplication control in which cooperative binding of duplication factors defines a centriole ‘origin of duplication’ that initiates duplication, and passage through mitosis effects changes that license the centriole for a new round of duplication in the next cell cycle. We also focus on variations on the general theme in which many centrioles are created in a single cell cycle, including the specialized structures associated with these variations, the deuterosome in animal cells and the blepharoplast in lower plant cells.

APA, Harvard, Vancouver, ISO, and other styles

29

Duval, Romain, Kevin Cheng, Kum Hwa Oh, Richa Saraf, and Dulani Seneviratne. "Trade Integration and Business Cycle Synchronization: A Reappraisal with Focus on Asia." IMF Working Papers 14, no. 52 (2014): 1. http://dx.doi.org/10.5089/9781475522464.001.

Full text

APA, Harvard, Vancouver, ISO, and other styles

30

Han, Maoan, and Valery G. Romanovski. "Limit Cycle Bifurcations from a Nilpotent Focus or Center of Planar Systems." Abstract and Applied Analysis 2012 (2012): 1–28. http://dx.doi.org/10.1155/2012/720830.

Full text

Abstract:

We study analytic properties of the Poincaré return map and generalized focal values of analytic planar systems with a nilpotent focus or center. We use the focal values and the map to study the number of limit cycles of this kind of systems and obtain some new results on the lower and upper bounds of the maximal number of limit cycles bifurcating from the nilpotent focus or center. The main results generalize the classical Hopf bifurcation theory and establish the new bifurcation theory for the nilpotent case.

APA, Harvard, Vancouver, ISO, and other styles

31

Freire, Emilio. "The Focus-Center-Limit Cycle Bifurcation in Symmetric 3D Piecewise Linear Systems." SIAM Journal on Applied Mathematics 65, no. 6 (January 2005): 1933–51. http://dx.doi.org/10.1137/040606107.

Full text

APA, Harvard, Vancouver, ISO, and other styles

32

Pierard-Franchimont, C., L. Petit, G. Loussouarn, D. Saint-Leger, and G. E. Pierard. "The hair eclipse phenomenon: sharpening the focus on the hair cycle chronobiology." International Journal of Cosmetic Science 25, no. 6 (December 2003): 295–99. http://dx.doi.org/10.1111/j.1467-2494.2003.00198.x.

Full text

APA, Harvard, Vancouver, ISO, and other styles

33

Lamine, Wadid, Alain Fayolle, and Servane Delanoë-Gueguen. "Focus sur une étape cruciale et déterminante du cycle de vie : l’incubation." Entreprendre & Innover 26, no. 3 (2015): 5. http://dx.doi.org/10.3917/entin.026.0005.

Full text

APA, Harvard, Vancouver, ISO, and other styles

34

Legates, David R. "An Inconvenient Truth: a focus on its portrayal of the hydrologic cycle." GeoJournal 70, no. 1 (September 2007): 15–19. http://dx.doi.org/10.1007/s10708-008-9125-0.

Full text

APA, Harvard, Vancouver, ISO, and other styles

35

Said, Farid, Jujuk Ferdianto, and Muhammad Sultan Hali. "Aligning tourism area life cycle and product life cycle in avoiding decline stage." International journal of social sciences 4, no. 1 (January 8, 2021): 9–14. http://dx.doi.org/10.31295/ijss.v4n1.370.

Full text

Abstract:

The peak of the tourism industry in West Nusa Tenggara before the COVID-19 pandemic suggested that its position was already in the stagnation stage according to TALC (Tourism Area Life Cycle). Also, the stage can be aligned with PLC (Product Life Cycle) which is known as the maturity stage. This research extracted opinions from tourism industry stakeholders by using multiple FGD (Focus Group Discussion) and summarized the result into a recommendation to avoid the declining stage of the tourism industry, especially in West Nusa Tenggara. One of the main conclusive answers is optimizing e-tourism at an innovative pace. However, this step does not only need good commitment, support, and collaborative intention from whole stakeholders but also good preparation from local human resources to support its sustainability. This preparation should be fulfilled by local vocational higher education in West Nusa Tenggara which is known as Tourism Polytechnic Lombok.

APA, Harvard, Vancouver, ISO, and other styles

36

Ferat Toscano, Catalina, Cecilia Martin-del-Campo, Gabriela Moeller-Chavez, Gabriel Leon de los Santos, Juan-Luis François, and Daniel Revollo Fernandez. "Life Cycle Assessment of a Combined-Cycle Gas Turbine with a Focus on the Chemicals Used in Water Conditioning." Sustainability 11, no. 10 (May 22, 2019): 2912. http://dx.doi.org/10.3390/su11102912.

Full text

Abstract:

Life Cycle Assessments (LCAs) of thermoelectric plants frequently focus on impacts related to fuel and water consumption. The purpose of this research was to determine the environmental impact of the chemicals used for water conditioning in a Combined-Cycle Gas Turbine (CCGT) plant in Mexico. An LCA of the electricity generation process was carried out using the SimaPro software with the ReCiPe method, which includes 18 midpoint environmental impact categories. The process was broken down into stages, which were analyzed separately. To complete the study, an analysis of the fuel cycle and the materials used for maintenance works were included. Results showed that the most affected impact categories were water depletion (9.77 × 10−1 m3/MWh), due mainly to the high volume of water consumption in the cooling systems and the reverse osmosis process; freshwater, marine, and terrestrial ecotoxicity (1.59 × 10−2 kg 1,4 -DB eq/MWh), and human toxicity (1.1 × 10−1 kg 1,4-DB eq/MWh)—due to the production and consumption of the chemicals used. One such chemical is hydrazine, which is a highly toxic compound to humans and other living organisms. It is worth mentioning that traces of some chemicals in wastewater discharges could be considered as emerging pollutants because of their potential health hazards, which have not been reported yet.

APA, Harvard, Vancouver, ISO, and other styles

37

Hooper, Scott L. "Variation Is the Spice of Life. Focus on “Cycle-to-Cycle Variability of Neuromuscular Activity in Aplysia Feeding Behavior”." Journal of Neurophysiology 92, no. 1 (July 2004): 40–41. http://dx.doi.org/10.1152/jn.00182.2004.

Full text

APA, Harvard, Vancouver, ISO, and other styles

38

Raval, Vasant. "The Disposition-Based Fraud Cycle." International Journal of Applied Behavioral Economics 2, no. 2 (April 2013): 56–76. http://dx.doi.org/10.4018/ijabe.2013040104.

Full text

Abstract:

This paper reviews the disposition-based fraud cycle (DFC) primarily from the perspective of financial frauds. It suggests that fraud as a human act represents an interaction between organism’s disposition and the circumstances he faces. The DFC model which maps financial fraud as a cycle driven by desire-belief connection is contrasted with the widely accepted paradigm called the Fraud Triangle (FT). A purpose of the analysis is to identify unique fraud-risk factors visible in the DFC model. Empirical evidence from the past studies is discussed to show relevance of the DFC model, and its potential role in preventing and detecting financial fraud. Although the model is applicable to all kinds of fraudulent acts, the focus of this study is on the powerful chief executive with considerable influence within the organization she leads.

APA, Harvard, Vancouver, ISO, and other styles

39

Shimotohno, Akie, Shiori S. Aki, Naoki Takahashi, and Masaaki Umeda. "Regulation of the Plant Cell Cycle in Response to Hormones and the Environment." Annual Review of Plant Biology 72, no. 1 (June 17, 2021): 273–96. http://dx.doi.org/10.1146/annurev-arplant-080720-103739.

Full text

Abstract:

Developmental and environmental signals converge on cell cycle machinery to achieve proper and flexible organogenesis under changing environments. Studies on the plant cell cycle began 30 years ago, and accumulated research has revealed many links between internal and external factors and the cell cycle. In this review, we focus on how phytohormones and environmental signals regulate the cell cycle to enable plants to cope with a fluctuating environment. After introducing key cell cycle regulators, we first discuss how phytohormones and their synergy are important for regulating cell cycle progression and how environmental factors positively and negatively affect cell division. We then focus on the well-studied example of stress-induced G2 arrest and view the current model from an evolutionary perspective. Finally, we discuss the mechanisms controlling the transition from the mitotic cycle to the endocycle, which greatly contributes to cell enlargement and resultant organ growth in plants.

APA, Harvard, Vancouver, ISO, and other styles

40

Nordeen, Craig A., and Lee S. Langston. "There's a New Cycle in Town." Mechanical Engineering 140, no. 07 (July 1, 2018): 36–41. http://dx.doi.org/10.1115/1.2018-jul-2.

Full text

Abstract:

The promises of increased efficiency, simplicity, and high power density are driving the current research focus on rotating detonation engines (RDEs). An engine that uses detonation rather than deflagration could have some key advantages. If harnessed in a gas turbine or rocket, detonation could reduce the need for some expensive hardware, lighten engine weight and increase power output and efficiency. Today, variants of the RDE as a combustor for gas turbines, rockets, and scramjets are being explored at the Air Force Research Laboratory (AFRL), Naval Research Laboratory, Naval Postgraduate School, and the Department of Energy. Similar work is being conducted in several other countries. This study provides a deeper look into RDEs.

APA, Harvard, Vancouver, ISO, and other styles

41

Hindley, Christopher, and Anna Philpott. "The cell cycle and pluripotency." Biochemical Journal 451, no. 2 (March 28, 2013): 135–43. http://dx.doi.org/10.1042/bj20121627.

Full text

Abstract:

PSCs (pluripotent stem cells) possess two key properties that have made them the focus of global research efforts in regenerative medicine: they have unlimited expansion potential under conditions which favour their preservation as PSCs and they have the ability to generate all somatic cell types upon differentiation (pluripotency). Conditions have been defined in vitro in which pluripotency is maintained, or else differentiation is favoured and is directed towards specific somatic cell types. However, an unanswered question is whether or not the core cell cycle machinery directly regulates the pluripotency and differentiation properties of PSCs. If so, then manipulation of the cell cycle may represent an additional tool by which in vitro maintenance or differentiation of PSCs may be controlled in regenerative medicine. The present review aims to summarize our current understanding of links between the core cell cycle machinery and the maintenance of pluripotency in ESCs (embryonic stem cells) and iPSCs (induced PSCs).

APA, Harvard, Vancouver, ISO, and other styles

42

Vellela, Melissa, and Hong Qian. "On the Poincaré–Hill cycle map of rotational random walk: locating the stochastic limit cycle in a reversible Schnakenberg model." Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences 466, no. 2115 (November 11, 2009): 771–88. http://dx.doi.org/10.1098/rspa.2009.0346.

Full text

Abstract:

Recent studies on stochastic oscillations mostly focus on the power spectral analysis. However, the power spectrum yields information only on the frequency of oscillation and cannot differentiate between a stable limit cycle and a stable focus. The cycle flux, introduced by Hill (Hill 1989 Free energy transduction and biochemical cycle kinetics ), is a quantitative measure of the net movement over a closed path, but it is impractical to compute for all possible cycles in systems with a large state space. Through simple examples, we introduce concepts used to quantify stochastic oscillation, such as the cycle flux, the Hill–Qian stochastic circulation and rotation number. We introduce a novel device, the Poincaré–Hill cycle map (PHCM), which combines the concept of Hill’s cycle flux with the Poincaré map from nonlinear dynamics. Applying the PHCM to a reversible extension of an oscillatory chemical system, the Schnakenberg model, reveals stable oscillations outside the Hopf bifurcation region in which the deterministic system contains a limit cycle. Bistable behaviour is found on the small volume scale with high probabilities around both the fixed point and the limit cycle. Convergence to the deterministic system is found in the thermodynamic limit.

APA, Harvard, Vancouver, ISO, and other styles

43

Lopes, José, Jorge Rocha, Luís Redondo, and João Cruz. "Particle Accelerator Focus Automation." Measurement Science Review 17, no. 4 (August 1, 2017): 208–12. http://dx.doi.org/10.1515/msr-2017-0024.

Full text

Abstract:

Abstract The Laboratório de Aceleradores e Tecnologias de Radiação (LATR) at the Campus Tecnológico e Nuclear, of Instituto Superior Técnico (IST) has a horizontal electrostatic particle accelerator based on the Van de Graaff machine which is used for research in the area of material characterization. This machine produces alfa (He+) and proton (H+) beams of some μA currents up to 2 MeV/q energies. Beam focusing is obtained using a cylindrical lens of the Einzel type, assembled near the high voltage terminal. This paper describes the developed system that automatically focuses the ion beam, using a personal computer running the LabVIEW software, a multifunction input/output board and signal conditioning circuits. The focusing procedure consists of a scanning method to find the lens bias voltage which maximizes the beam current measured on a beam stopper target, which is used as feedback for the scanning cycle. This system, as part of a wider start up and shut down automation system built for this particle accelerator, brings great advantages to the operation of the accelerator by turning it faster and easier to operate, requiring less human presence, and adding the possibility of total remote control in safe conditions.

APA, Harvard, Vancouver, ISO, and other styles

44

Apostoaie, Constantin-Marius, Stanislav Percic, Vasile Cocriş, and Dan Chirleşan. "Research on the Credit Cycle and Business Cycle with a Focus on Ten States from Central, Eastern, and Southeastern Europe." Emerging Markets Finance and Trade 50, sup4 (July 2014): 63–77. http://dx.doi.org/10.2753/ree1540-496x5004s404.

Full text

APA, Harvard, Vancouver, ISO, and other styles

45

Denard, Samuel, Atila Ertas, Susan Mengel, and Stephen Ekwaro-Osire. "Development Cycle Modeling: Process Risk." Applied Sciences 10, no. 15 (July 23, 2020): 5082. http://dx.doi.org/10.3390/app10155082.

Full text

Abstract:

The first part of this paper outlined the Statistical Agent-based Model of Development and Evaluation (SAbMDE) and demonstrated the model’s ability to estimate development cycle resource utilization. This second part of the paper explores the model’s ability to compute development cycle information content and process risk. Risk managers focus mostly on outcome risk, i.e., the likelihood that a running system will behave in an undesirable manner. SAbMDE assumes that a subset of outcome risks are not inherent and immutable but are, instead, the result of defects and vulnerabilities introduced during the system’s development process. The likelihood of defect and vulnerability introduction is a process risk. SAbMDE further assumes that measuring process risk is a prerequisite for minimizing defects and vulnerabilities and, therefore, outcome risk. The model implements the measurement with Shannon’s information–probability relationship similar to its use in Axiomatic Design Theory (ADT). This paper details the SAbMDE’s information and risk calculations and demonstrates those calculations with examples. The process risk calculation is consistent with and offers a mechanism for the ADT Information Axiom.

APA, Harvard, Vancouver, ISO, and other styles

46

Li, Wei, and Xiaofeng Cui. "Focus on Rice: Towards Better Understanding of the Life Cycle of Crop Plants." Molecular Plant 7, no. 6 (June 2014): 931–33. http://dx.doi.org/10.1093/mp/ssu057.

Full text

APA, Harvard, Vancouver, ISO, and other styles

47

Schiaffino, S., C. Reggiani, T. Y. Kostrominova, M. Mann, and M. Murgia. "Mitochondrial specialization revealed by single muscle fiber proteomics: focus on the Krebs cycle." Scandinavian Journal of Medicine & Science in Sports 25 (November 19, 2015): 41–48. http://dx.doi.org/10.1111/sms.12606.

Full text

APA, Harvard, Vancouver, ISO, and other styles

48

Porras, Miguel A., and Péter Dombi. "Freezing the carrier-envelope phase of few-cycle light pulses about a focus." Optics Express 17, no. 22 (October 12, 2009): 19424. http://dx.doi.org/10.1364/oe.17.019424.

Full text

APA, Harvard, Vancouver, ISO, and other styles

49

Zhao, Shen Qi, and Ping Guang Zhang. "Uniqueness of Limit Cycle for the Quadratic Systems with Weak Saddle and Focus." Acta Mathematica Sinica, English Series 20, no. 4 (June 21, 2004): 647–52. http://dx.doi.org/10.1007/s10114-004-0380-9.

Full text

APA, Harvard, Vancouver, ISO, and other styles

50

Renouf, Marguerite Anne, Malcolm K. Wegener, and Robert J. Pagan. "Life cycle assessment of Australian sugarcane production with a focus on sugarcane growing." International Journal of Life Cycle Assessment 15, no. 9 (July 27, 2010): 927–37. http://dx.doi.org/10.1007/s11367-010-0226-x.

Full text

APA, Harvard, Vancouver, ISO, and other styles

We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!