Effect of non-solvent additives on the structure and performance of PVDF hollow fiber membrane contactor for CO2 stripping

Microporous polyvinylidene fluoride (PVDF) hollow fiber membranes with various non-solvent additives, i.e. lithium chloride, glycerol, polyethylene glycol (PEG-400), methanol and phosphoric acid, were fabricated for CO2 stripping via membrane contactors. The membranes were characterized in terms of liquid entry pressure, contact angle, gas permeation and morphology analysis. CO2 stripping performance was investigated by using an in-house made stainless steel module with CO2-preloaded aqueous diethanolamine as the liquid absorbent. Hydrophobicity and gas permeability of the membranes reduced with the addition of a non-solvent additive in the polymer dope but increase in liquid entry pressure was observed as more sponge-like structures developed in the inner layer of the fibers. It was found that PVDF/PEG-400 membrane produced the highest stripping flux of 4.03×10-2 mol m-2 s-1 which can be correlated to its high gas permeation and high effective surface porosity. The result of long-term stripping operation indicated an approximatly 80% stripping flux reduction which can be related to the interaction of polymer membrane and amine solution at high temperature

A Fully Unsupervised Texture Segmentation Algorithm

This paper presents a fully unsupervised texture segmentation algorithm by using a modified discrete wavelet frames decomposition and a mean shift algorithm. By fully unsupervised, we mean the algorithm does not require any knowledge of the type of texture present nor the number of textures in the image to be segmented. The basic idea of the proposed method is to use the modified discrete wavelet frames to extract useful information from the image. Then, starting from the lowest level, the mean shift algorithm is used together with the fuzzy c-means clustering to divide the data into an appropriate number of clusters. The data clustering process is then refined at every level by taking into account the data at that particular level. The final crispy segmentation is obtained at the root level. This approach is applied to segment a variety of composite texture images into homogeneous texture areas and very good segmentation results are reported

Corporate Social Performance of Indonesian State-Owned and Private Companies

The objectives of this study are to analyze the difference of corporate social performance between State-owned and private companies in Indonesia, and also to analyze the correlation between the corporate social performance (CSP) and the corporate financial performance by using company size, and institutional ownership as control variables. The population of this study is Indonesian state owned and private companies in the year of 2001-2004. Purposive sampling was used in this study, and final samples are 461 companies. The CSP or CSR (Corporate social responsibility) score is measured by content analysis of corporate annual report using seven item developed by Michael Research Jantzi Research Associate, Inc. The data is tested by independent t-test to determine the mean difference and by using partial correlation test to know the correlation between the corporate social performance and financial performance. The results of this study are that there is no significant difference mean of corporate social performance between state-owned and private owned companies in Indonesia. In addition, the correlation test indicates that there is no association between corporation social performance and financial performance both in SOCs and POCs

Pengembangan Human Relation Perspektif Nilai-nilai Al-Qur\u27an

Not least the manager (leader) who failed to carry out its duties and functions. This is largely due to the lack of attention to the human relations aspect in building a spirit of togetherness as one of the most dominant factor in the success of management. Since the beginning of its creation, mankind has been designed as a creature who can not live alone. Therefore, one man inevitably need to Communicate and Interact with other human beings. This study intends to examine the conceptual meaning of human relations and the urgency with psychological and sociological approach in the perspective of the values of the Koran, Because The Qur\u27anic principle is to guide human life. The shift in the orientation of this communication is Inseparable from the human relations that is increasingly widespread and seamless, everyone can relate to anyone who desired, Including Westerners and their world. The existence of two human relationships that must be Followed by two cultures is then led to the change tendency of the relations between the two model

Agama, Pancasila dan Konflik Sosial di Indonesia

. During Reformasi Era, Indonesia has still had serious social issues with reference to social clashes and religious violence. The contestation between majority and minority and the monopoly of interpretation of Pancasila as a state ideology have dominated public sphere which affects on the increase of social clash with various backgrounds. The increase of social clash including religious violence results in the uncertainty whether or not Pancasila as a state ideology is capable of tackling contemporary Indonesian realities. Moreover, Pancasila also needs to tackle religious transnationalism ideology which has spread across the nation and receive positive sympathy from some Indonesians. Based on these realities, this writing aims to examine dimension of divinity and humanism in Pancasila and then propose an ideal concept of the divinity in the framework of Indonesian unity. Keywords: Pancasila, Religious Conflict, Indonesia and Ideolog

Aplikasi Sistem Informasi Geografis Untuk Analisa Tata Ruang Wilayah Kabupaten Lamongan

The existing lamongan Sub-Province is executing autonomy Daerah, so request of information about development of area lamongan hardly is required. But constraint faced is gathering of the information from various sectors relating to geographical position from it area . so consequence triggers to give complete presentation of geographical information , accurate and safe. Hence its the solution is with making geospatial information system, which is aliance data at map and its(the information), information consisted of form database, tables, data thematic at map and photo. By Using SIG to assists Local Government Lamongan in planning of area as according to information to phase here in after