scholarly journals Upgrading Biogas from Small Agricultural Sources into Biomethane by Membrane Separation

Membranes ◽  
2021 ◽  
Vol 11 (12) ◽  
pp. 938
Author(s):  
Aleksandra Janusz-Cygan ◽  
Jolanta Jaschik ◽  
Marek Tańczyk
Keyword(s):  
Membrane Separation ◽  
Separation Process ◽  
The Other ◽  
Energetic Efficiency ◽  
Membrane Process ◽  
Methane Recovery ◽  
Agriculture Sector ◽  
Polyimide Membrane ◽  
Gas Fuel

The agriculture sector in Poland could provide 7.8 billion m3 of biogas per year, but this potential would be from dispersed plants of a low capacity. In the current study, a membrane process was investigated for the upgrading biogas to biomethane that conforms to the requirements for grid gas in Poland. It was assumed that such a process is based on membranes made from modified polysulfone or polyimide, available in the market in Air Products PRISM PA1020 and UBE UMS-A5 modules, respectively. The case study has served an agricultural biogas plant in southern Poland, which provides the stream of 5 m3 (STP) h−1 of biogas with a composition of CH4 (52 vol.%), CO2 (46.3 vol.%), N2 (1.6 vol.%) and O2 (0.1 vol.%), after a pretreatment. It was theoretically shown that this is possible to obtain the biomethane stream of at least 96 vol.% of CH4 purity, with the concentration of the other biogas components below their respective thresholds, as required in Poland for gas fuel “E”, with methane recovery of up to 87.5% and 71.6% for polyimide and polysulfone membranes, respectively. The energetic efficiency of the separation process is comparable for both membrane materials, as expressed by power excess index, which reaches up to 51.3 kWth kWel−1 (polyimide) and 40.7 kWth kWel−1 (polysulfone). In turn, the membrane productivity was significantly higher in the case of the polyimide membrane (up to 38.3 kWth m−2) than those based on the polysulfone one (up to 3.13 kWth m−2).

Removal of Bulk CO2 from Methane with the Presenceof Heavy Hydrocarbon using Polyimide Membrane

2014 ◽  
Vol 69 (9) ◽  
Author(s):  
N. Jusoh ◽  
K. K. Lau ◽  
A. M. Shariff
Keyword(s):  
Gas Separation ◽  
Membrane Separation ◽  
Co2 Concentration ◽  
Operating Pressure ◽  
Membrane Process ◽  
Heavy Hydrocarbon ◽  
Polyimide Membrane ◽  
Dry And Wet Conditions

The membrane process has advanced rapidly and continued to progress due to its advantages. Polyimide membrane has been widely applied for gas separation due to their promising permeability and selectivity. In this paper, the effect of heavy hydrocarbon (pentane) in removing bulk CO2 from methane using polyimide membrane was studied. Higher operating pressure and temperature demonstrated the increment of CO2 and CH4 permeance while CO2/CH4 selectivity decreased for both dry and wet conditions. As CO2 concentration increased, CO2 and CH4 permeance as well as CO2/CH4 selectivity enhanced. The presence of pentane in membrane separation contributed to the loss of CO2/CH4 selectivity.

Development and regional planning within the decentralized administrative frame: case study (the Jordanian Experiment)

2018 ◽  
Vol 1 (2) ◽  
pp. 60-72
Author(s):  
Mansour Safran
Keyword(s):  
Regional Planning ◽  
The Other ◽  
Negative Effects ◽  
Administrative Procedures ◽  
The Way

This aims to review and analyze the Jordanian experiment in the developmental regional planning field within the decentralized managerial methods, which is considered one of the primary basic provisions for applying and success of this kind of planning. The study shoed that Jordan has passed important steps in the way for implanting the decentralized administration, but these steps are still not enough to established the effective and active regional planning. The study reveled that there are many problems facing the decentralized regional planning in Jordan, despite of the clear goals that this planning is trying to achieve. These problems have resulted from the existing relationship between the decentralized administration process’ dimensions from one side, and between its levels which ranged from weak to medium decentralization from the other side, In spite of the official trends aiming at applying more of the decentralized administrative policies, still high portion of these procedures are theoretical, did not yet find a way to reality. Because any progress or success at the level of applying the decentralized administrative policies doubtless means greater effectiveness and influence on the development regional planning in life of the residents in the kingdom’s different regions. So, it is important to go a head in applying more steps and decentralized administrative procedures, gradually and continuously to guarantee the control over any negative effects that might result from Appling this kind of systems.   © 2018 JASET, International Scholars and Researchers Association

The Relationship between Working Environment and Internship Satisfaction Level: A Case Study Of A 4-Star Hotel Restaurant In Germany

2019 ◽  
Vol 2 (4) ◽  
pp. 276-291
Author(s):  
Chatarina Natalia Putri
Keyword(s):  
Career Development ◽  
Working Hours ◽  
Learning Opportunities ◽  
Working Environment ◽  
The Other ◽  
Satisfaction Level ◽  
Supervisory Support ◽  
Support Organization ◽  
The Relationship

There are many factors that can lead to internship satisfaction. Working environment is one of the factors that will result to such outcome. However, many organizations discarded the fact of its importance. The purpose of this study is to determine whether there is a significant relationship between working environment and internship satisfaction level as well as to determine whether the dimensions of working environment significantly affect internship satisfaction. The said dimensions are, learning opportunities, supervisory support, career development opportunities, co-workers support, organization satisfaction, working hours and esteem needs. A total of 111 questionnaires were distributed to the respondents and were processed by SPSS program to obtain the result of this study. The results reveal that learning opportunities, career development opportunities, organization satisfaction and esteem needs are factors that contribute to internship satisfaction level. In the other hand, supervisory support, co-workers support and working hours are factors that lead to internship dissatisfaction. The result also shows that organization satisfaction is the strongest factor that affects internship satisfaction while co-workers support is the weakest.

‘Behind the Poetic Fiction’: Freud, Schnitzler and Feminine Subjectivity

2004 ◽  
Vol 6 (2) ◽  
pp. 201-223
Author(s):  
Elizabeth Goodstein
Keyword(s):  
Sigmund Freud ◽  
The Other ◽  
Modernist Literature ◽  
Arthur Schnitzler ◽  
Feminine Subjectivity ◽  
The Uncanny ◽  
Poetic Fiction ◽  
Psychoanalytic Theories

In 1922 Sigmund Freud wrote to fellow Viennese author and dramatist Arthur Schnitzler: ‘I believe I have avoided you out of a sort of fear of my double’. Through a series of reflections on this imagined doubling and its reception, this paper demonstrates that the ambivalent desire for his literary other attested by Freud's confession goes to the heart of both theoretical and historical questions regarding the nature of psychoanalysis. Bringing Schnitzler's resistance to Freud into conversation with attempts by psychoanalytically oriented literary scholars to affirm the Doppengängertum of the two men, it argues that not only psychoanalytic theories and modernist literature but also the tendency to identify the two must be treated as historical phenomena. Furthermore, the paper contends, Schnitzler's work stands in a more critical relationship to its Viennese milieu than Freud's: his examination of the vicissitudes of feminine desire in ‘Fräulein Else’ underlines the importance of what lies outside the oedipal narrative through which the case study of ‘Dora’ comes to be centered on the uncanny nexus of identification with and anxious flight from the other.

Interrelationships between municipal spatial policy strategy and airport operation and development. Lodz Airport case study

2018 ◽  
Vol 59 (1) ◽  
pp. 65-79
Author(s):  
Katarzyna Nikorowicz-Zatorska
Keyword(s):  
Land Use ◽  
Urban Planning ◽  
Cultural Development ◽  
The Other ◽  
Local Authorities ◽  
Spatial Management ◽  
The One ◽  
Surrounding Areas

Abstract The present paper focuses on spatial management regulations in order to carry out investment in the field of airport facilities. The construction, upgrades, and maintenance of airports falls within the area of responsibility of local authorities. This task poses a great challenge in terms of organisation and finances. On the one hand, an active airport is a municipal landmark and drives local economic, social and cultural development, and on the other, the scale of investment often exceeds the capabilities of local authorities. The immediate environment of the airport determines its final use and prosperity. The objective of the paper is to review legislation that affects airports and the surrounding communities. The process of urban planning in Lodz and surrounding areas will be presented as a background to the problem of land use management in the vicinity of the airport. This paper seeks to address the following questions: if and how airports have affected urban planning in Lodz, does the land use around the airport prevent the development of Lodz Airport, and how has the situation changed over the time? It can be assumed that as a result of lack of experience, land resources and size of investments on one hand and legislative dissonance and peculiar practices on the other, aviation infrastructure in Lodz is designed to meet temporary needs and is characterised by achieving short-term goals. Cyclical problems are solved in an intermittent manner and involve all the municipal resources, so there’s little left to secure long-term investments.

Producers' Response to Changes in Prices and Marketing Policies: A Case Study of Sugarcane and Paddy in Eastern U.P. by S. C. Gupta and A. Majid. New York: Asia Publishing House, 1965.

1968 ◽  
Vol 8 (2) ◽  
pp. 308-309
Author(s):  
Mohammad Irshad Khan
Keyword(s):  
New York ◽  
Time Series ◽  
Time Series Data ◽  
Publishing House ◽  
Economic Incentives ◽  
The Other ◽  
Series Data ◽  
Poor Countries ◽  
Northern India

It is alleged that the agricultural output in poor countries responds very little to movements in prices and costs because of subsistence-oriented produc¬tion and self-produced inputs. The work of Gupta and Majid is concerned with the empirical verification of the responsiveness of farmers to prices and marketing policies in a backward region. The authors' analysis of the respon¬siveness of farmers to economic incentives is based on two sets of data (concern¬ing sugarcane, cash crop, and paddy, subsistence crop) collected from the district of Deoria in Eastern U.P. (Utter Pradesh) a chronically foodgrain deficit region in northern India. In one set, they have aggregate time-series data at district level and, in the other, they have obtained data from a survey of five villages selected from 170 villages around Padrauna town in Deoria.

The Tradition of Religious Books (Kitabs) Printing: Case Study of the Production and Reproduction of Religious Books (Kitabs) in Cianjur and Sukabumi, West Java, Indonesia

2020 ◽  
Vol 17 (2) ◽  
pp. 291-320
Author(s):  
Asep Saefullah
Keyword(s):  
Data Collection ◽  
Screen Printing ◽  
The Other ◽  
West Java ◽  
Simple Method ◽  
Original Essays ◽  
Printed Books ◽  
Religious Books ◽  
Living Tradition

Tulisan ini membahas fenomena penyebaran kitab-kitab cetak keaga­maan di Jawa Barat, khususnya di Sukabumi dan Cianjur. Jenis kitab ini biasanya menggunakan tulisan Arab dengan bahasa Sunda dan menggu­nakan aksara Pegon. Kitab-kitab cetak dari jenis-jenis itu diproduksi dan direproduksi, dan masih digunakan sampai hari ini. Oleh karena itu, fenomena ini dapat disebut sebagai “living tradition”. Pengumpulan data dilakukan dengan melacak dan merekam kitab-kitab yang diproduksi (disalin atau dikarang) dan direproduksi (dicetak atau digandakan) dengan metode seder­hana, yakni fotocopi dan pencetakan tradisional seperti stensil, sablon, dan "cetak toko". Tulisan ini bertujuan untuk memetakan dan merevisi kategorisasi kitab-kitab tersebut dari kajian terdahulu berdasarkan jenis karya, seperti karangan asli, tuqilan, terjemahan, syarḥ (penjelasan), khulasah (ringkasan) yang lain, dan juga berdasarkan bahasa dan aksara yang digunakan. Selain itu, tulisan ini juga mengamati lembaga-lembaga atau individu-individu yang masih mereproduksi buku-buku (kitab-kitab) keagamaan sederhana seperti perusahaan percetakan atau pesantren yang menerbitkan kitab-kitab tersebut. Pada akhir artikel ini, ada beberapa saran dalam upaya untuk melestarikan kitab-kitab cetak dan karya-karya tersebut.Kata kunci: kitab, jenis karya, pencetakan tradisional, Sunda, Pegon, Jawa Barat This paper discusses the phenomenon of the spreading of religious printed books (kitabs) in West Java, especially in Sukabumi and Cianjur, which are characterized by the use of Arabic writing in Sundanese (or known as Pegon script). The printed books (Kitabs) of those types are produced and reproduced, and are still used to this day. Therefore, this phenomenon can be called as a “living tradition”. Data collection was conducted by tracing and recording religious books (kitabs) that are pro-duced (rewritten or compossed) and reproduced (printed or duplicated) with a simple method, known as photocopying and traditional printing such as stencils, screen printing, and “shop printing”. This paper aims to map and revise the categorization of these Kitabs from previous studies based on the types of works including original essays, tuqilan (quotations), translation, sharh (explanation), khulaṣah (summary), or the other, and also based on the language and the script used. In addition, this paper also observes the institutions or individuals that are still reproducing these printed religious books such as the printing company or pesantren that publish such kitabs. At the end of this article, there are some suggestions in attempts to preserve those printed kitabs and the works.Keywords: Kitabs, type of work, traditional printing, Sunda, Pegon, West Java

Growth and Performance of Agriculture Sector in India

2015 ◽  
Vol 3 (2) ◽  
Author(s):  
Naresh Singla ◽  
Mamandeep Kaur
Keyword(s):  
Growth Rate ◽  
Capital Formation ◽  
The Other ◽  
Agricultural Credit ◽  
Agricultural Growth ◽  
Indian Economy ◽  
Agriculture Sector ◽  
Food Grain ◽  
And Performance ◽  
Agricultural Labourers

The growth of agriculture and allied sectors is critical for the Indian economy as about 49 percent of the population is directly or indirectly dependent on agriculture. During the last decade and so, the agriculture sector has undergone profound changes resulting in sharp deceleration in its growth. The study has attempted to analyze growth and performance of the agriculture sector in India since 1980-81 and tries to comprehend some of the factors responsible for the deceleration in growth. The study has shown that agriculture sector has been able to show tremendous improvement in expansion of area and production of food grain and non-food grain crops. However, there are so many underlying factors responsible for slowdown of the agricultural growth. Some of the factors identified include: Increase in area under non-agriculture uses, excessive dependence on rain fed farming, increase in number of agricultural labourers, reducing size of the operation holdings, over use of agri-inputs, inequity in the distribution of agriculture credit along with sharp deceleration in public gross capital formation in agriculture etc. The study pointed in order to achieve higher growth rate, there is a need to enhance the gross capital formation in agriculture sector particularly on irrigation so that more area can be brought under assured irrigation. Bringing equity in distribution of agricultural credit coupled with judicious and need-based agricultural inputs are some of the other recommendations drawn based upon the study.

Keeping the Vision Alive: The Role of Networks in National Memorial Building A Case Study of the Vietnam Women’s Memorial and the Black Revolutionary War Patriots Memorial

Public Voices ◽  
2016 ◽  
Vol 11 (1) ◽  
pp. 89
Author(s):  
Amy Probsdorfer Kelley ◽  
John C. Morris
Keyword(s):  
Network Analysis ◽  
Revolutionary War ◽  
The Other ◽  
Perceived Popularity ◽  
National Mall ◽  
Compare And Contrast

The process to win approval to build a national memorial on the National Mall inWashington, DC is both long and complex. Many memorials are proposed, but few are chosen to inhabit the increasingly scarce space available on the Mall. Through the use of network analysis we compare and contrast two memorial proposals, with an eye toward understanding why one proposal was successful while the other seems to have failed. We conclude that the success of a specific memorial has less to do with the perceived popularity of the person or event to be memorialized, and more to do with how the sponsors use the network of people and resources available to advocate for a given proposal.

Når styringens ambitioner udfordres af praksis. Om at analysere rummet imellem styringens intentioner og situationel praksis

2016 ◽  
Vol 27 (1) ◽  
pp. 15-34 ◽  
Author(s):  
Mathias Herup Nielsen ◽  
Niklas Andreas Andersen
Keyword(s):  
Michel Foucault ◽  
Qualitative Interviews ◽  
The Other ◽  
Empirical Reality ◽  
Men I ◽  
Unemployment Policy ◽  
The Relationship ◽  
Point Of Departure ◽  
Local Employment

Studier, der analyserer det sociale med inspiration fra Foucaults tanker om governmentality, kritiseres i stigende omfang for at afskære sig fra at analysere de praktiske relationer, som politisk styring konkret indlejres i. I artiklen tager vi afsæt i denne kritik og viser, med et studie af forholdet mellem et kommunalt jobcenter og et lokalt beskæftigelsesråd, hvordan governmental magtanalyse kan indfange styringens uforudsigelige, mangefacetterede og immanente karakter ved at fokusere på styringsintentionernes møde med den praktiske virkelighed, der søges styret. Formelt er rådet nedsat til at overvåge og kontrollere jobcentret, men i den praktiske relation er det snarere jobcentret, som overvåger og kontrollerer rådet. Artiklen viser, hvordan dette er muligt ved at analysere jobcentrets arbejde med rådet ved hjælp af en række centrale begreber fra Foucaults forfatterskab. Empirisk trækker studiet foruden formelle myndighedsdokumenter, der beskriver rådets tiltænkte rolle, på praksisinformerende empiri i form af kvalitative interviews og mødereferater over en fire-årig periode. ENGELSK ABSTRACT: Mathias Herup Nielsen and Niklas Andreas Andersen: When Praxis Challenges the Ambitions of Governing. Analyzing the Space between the Intentions of Governing and Situational Praxis Studies working with the Foucauldian concept of ”governmentality” are frequently criticized for their apparent disregard of empirical reality. This article takes this critique as its point of departure and demonstrates the application of the concept of governmentality in a concrete empirical case study in order to grasp the unpredictable and multifaceted nature of modern day power. The case investigated here is the relationship between a Danish Jobcentre and a so-called local employment council (LBR). The latter was created to ”control” and ”monitor” the former organization. However, in practice, it is rather the other way around – the Jobcentre is controlling and monitoring the members of the LBR. This article draws on a number of well-known Foucauldian concepts to show how this relation of power is practically structured. Empirically the article draws on documents from central authorities as well as on a number of qualitative interviews with the actors involved – hence, the article attempts to meet with the dominant overall critique of the governmentality perspective for disregarding empirical reality. Keywords: governmentality, Michel Foucault, unemployment policy, jobcentre.

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