Electronic and structural distortions in graphene induced by carbon vacancies and boron doping

We present an ab initio study on the structural and electronic distortions of modified graphene by creation of vacancies, inclusion of boron atoms, and the coexistence of both, by means of thermodynamics and band structure calculations. In the case of coexistence of boron atoms and vacancy, the modified graphene presents spin polarization only when B atoms locate far from vacancy. Thus, when a boron atom fills single- and di-vacancies, it suppresses the spin polarization of the charge density. In particular when B atoms fill a di-vacancy a new type of rearrangement occurs, where a stable BC4 unit is formed inducing important out of plane distortions to graphene. All these findings suggest that new chemical modifications to graphene and new type of vacancies can be used for interesting applications such as sensor and chemical labeling.Comment: 22 pages, 9 figures and 3 table

Komunikasi Persuasif Duta Lingkungan dalam Meningkatkan Gaya Hidup Ramah Lingkungan pada Program Kampung Iklim Badan Lingkungan Hidup Kota Pekanbaru

Kampung Iklim\u27s program is the national program developed by the Ministry of Environment to encourage the active participation of the community and all the parties in implementing local action. The action to increase the resilience to climate hange and redution of green house gas emissions. Through the implementation of this program, the government rewards the communities in specific locations which are already implementing mitigation and adaption to climate change sustainably. In execute Kampung Iklim\u27s program, the environment ambassador using persuasive communication to those public by way of encouragement and the example in implementing eco-friendly lifestyle. This research aims to determine the credibility of the persuader, persuasive message and the effets produed by the environment ambassador in promoting eco friendly lifestyle.This researh using qualitative research method with descriptive approah. The subject of this research was choosing by purposive technique who consist of BLH, environment ambassador, society who are joined in climate village. Data was collected through interview, observation and documentation. Data was analyst using interative model of Miles and Huberman. To achieve the validity of the data in this study, researcher used the triangulation technique.The tehnique showed that environmental ambassador have credibility as communiator that is expetness in a way socialization and have knowledge about the environment and trust worthiness that is environmental ambassador apply eco-friendly lifestyle. A persuasive message used consists of verbal message, include clarity, directness, and auray. While nonverbal message with give example eco-friendly lifestyle like bring a tumblr and use handkerchief and utilization seondhand like used beverage bottles and old paint bucket into flower pot and water media for hydroponic. The resulting efffect, first is an inrease, knowledge, comprehension and awareness on people\u27s self about environment of information provided by environmental ambassador. Second, eonomic that is sense of public concern felt by citizen. Third, culture that is action which is conducted by citizen for eco-friendly lifestyle

GALEX Observations of Diffuse UV Radiation at High Spatial Resolution from the Sandage Nebulosity

Using the GALEX ultraviolet imagers we have observed a region of nebulosity first identified as starlight scattered by interstellar dust by Sandage (1976). Apart from airglow and zodiacal emission, we have found a diffuse UV background of between 500 and 800 \phunit in both the \galex FUV (1350 -- 1750 \AA) and NUV (1750 -- 2850 \AA). Of this emission, up to 250 \phunit is due to \htwo fluorescent emission in the FUV band; the remainder is consistent with scattering from interstellar dust. We have estimated the optical constants to be $a = 0.3; g = 0.7$ in the FUV and $a = 0.5; g = 0.7$ in the NUV, implying highly forward scattering grains, plus an extragalactic contribution of as much as 150 \phunit. These are the highest spatial resolution observations of the diffuse UV background to date and show an intrinsic scatter beyond that expected from instrumental noise alone. Further modeling is required to understand the nature of this scatter and its implications for the ISM.Comment: Total 20 pages, Figures 9, Accepted for publication in Astrophysical Journa

Pengaruh Pola Penyajian End Of Sequence (Eos) dan Seri Informasi Pendek dalam Pengambilan Keputusan Investasi

This study tested the model of belief adjustment in investment decision The purpose of this study was to reexamine whether there are differences in investment decisions between participants were informed of good news followed by bad news than participants who obtain information about bad news followed by good news on the pattern of presentation End of Sequence and series of short information. Design of Experiments in this study is that the pattern of presentation 1x1x2 End Of Sequence, series of short information and directions evidence (good news followed by bad news and the bad news followed by good news). The research hypothesis of research in this study were tested by Mann Whitney test. Variables used in this research is an investment decision, patterns of presentation end of the sequence, a series of short information, and order of proof. Participants involved in this research were 44 students Perbanas Surabaya bachelor degree majoring in Accounting or Management that are being or have taken courses of Financial Statement Analysis and Investment Management and Capital Markets. The result obtained is that there are significant differences in the final judgment participants who received information of good news followed by bad news compared to participants who received information about bad newsfollowedby good news also recency effect occurs in making investment decisions

Difference Cultural Structure and Behavior Students in Learning Process

This paper summarizes some observations and reflections on how cultural differences bedeviled my interactions with my students in Universidad de Lima, Peru. Culture is not an abstract force that floats around in space and settles upon us—though given the seemingly subliminal ways it influences us, it can feel like a disembodied, ubiquitous entity. In fact, culture is mediated through a social structure. In general, culture refers to the ways in which different groups of people organize their daily lives within national or ethnic groups, urban neighborhoods, companies and professions, and other settings. Culture includes what people actually do and what they believe. Culture influences greatly how we see the world, how we try to understand it and how we communicate with each other. Therefore, culture determines, to a great extent, learning and teaching styles. When we compare cultures we should not look for differences that make us better or worse than each other. No culture is better than another and no communication style is intrinsically wrong. My teaching and communication styles are deeply rooted in the way I have been socialized and a year of teaching at college reminded me that my students' communication and learning styles were different from mine. Perhaps the most important lesson I learned is that I must adapt to this new environment and change the way I communicate if I wish to be an effective teacher

Faktor-Faktor Yang Mempengaruhi Financial Sustainability Ratio Pada Bank Umum Swast Nasional Non Devisa Periode 1995-2005

This study is aimed to test the consistency of time period model, whether the information that previously affects today\u27s performance can be used to predict the performance in the future, and how the consistency of Indonesia banking financial prediction model formulation equation in order to detect bank condition and performance in the period of pre-economic crisis (1995-1996), during economic crisis (1997-1999) or post-economic crisis (2000-2005) is since bank condition and health is the interest of all relevant parties namely bank owner and manager, customers, Bank Indonesia in its capacity as the supervisor and builder, and the government. The samples are Non Foreign Exchange National Private Banks listed in Indonesian Banking Directory during the period after economic crisis in 1995 – 2005 and Indonesian Financial Economic Statistics Monthly Statement for economic macro indicator. The sampling is performed by means of purposive method (purposive sampling). Dependent Variable in this study is Financial Sustainability Ratio and independent variable in this study is Capital Adequacy Ratio, Non Performing Loan, Return On Assets, Operational Cost Ratio to Operational Income, Loan to Deposit Ratio, Money Supply Sensitivity, General Customer Price Index Sensitivity and SBI Interest Rate Sensitivity. The result of this study shows that model financial sustainability ratio did not have structural stabilization in 1999 – 2005

Phenols content and 2-D electrophoresis protein pattern: a promising tool to monitor Posidonia meadows health state

<p>Abstract</p> <p>Background</p> <p>The endemic seagrass <it>Posidonia oceanica </it>(L.) Delile colonizes soft bottoms producing highly productive meadows that play a crucial role in coastal ecosystems dynamics. Human activities and natural events are responsible for a widespread meadows regression; to date the identification of "diagnostic" tools to monitor conservation status is a critical issue. In this study the feasibility of a novel tool to evaluate ecological impacts on <it>Posidonia </it>meadows has been tested. Quantification of a putative stress indicator, <it>i.e</it>. phenols content, has been coupled to 2-D electrophoretic protein analysis of rhizome samples.</p> <p>Results</p> <p>The overall expression pattern from <it>Posidonia </it>rhizome was determined using a preliminary proteomic approach, 437 protein spots were characterized by p<it>I </it>and molecular weight. We found that protein expression differs in samples belonging to sites with high or low phenols: 22 unique protein spots are peculiar of "low phenols" and 27 other spots characterize "high phenols" samples.</p> <p>Conclusion</p> <p><it>Posidonia </it>showed phenols variations within the meadow, that probably reflect the heterogeneity of environmental pressures. In addition, comparison of the 2-D electrophoresis patterns allowed to highlight qualitative protein expression differences in response to these pressures. These differences may account for changes in metabolic/physiological pathways as adaptation to stress. A combined approach, based on phenols content determination and 2-D electrophoresis protein pattern, seems a promising tool to monitor <it>Posidonia </it>meadows health state.</p