196,184 research outputs found
Open circuit potential analysis of Sn-9Zn Pb-free solder in different solutions
No full textThe 2nd International Malaysia-Ireland Joint Symposium on Engineering, Science and Business 2012 (IMiEJS2012) jointly organized by Universiti Malaysia Perlis and Athlone Institute of Technology in collaboration with The Ministry of Higher Education (MOHE) Malaysia, Education Malaysia and Malaysia Postgraduates Student Association Ireland (MyPSI), 18th - 19th June 2012 at Putra World Trade Center (PWTC), Kuala Lumpur, Malaysia.The open circuit potential of Sn-9Zn lead-free solder was studied in distilled water and 6 M KOH solutions. The potential arises with the prolonged immersion time prior reaching saturation regardless of the solution. Morphological analysis shows distinctive oxides formation inhibiting the surface of the solder after immersion in distilled water and 6 M KOH. Furthermore, phase analysis reveals that the original Sn-9Zn peak intensities are reduced significantly with several new phases detected after immersion
An investigation into SMEs' perceptions of credit guarantee corporation (CGC) Malaysia berhad: A case study of Islamic guarantee scheme in Malays
No full textSmall and Medium Sized Enterprises (SMEs) are considered as backbone of the national economies, whether developing, or developed nations, due to their contribution to economic growth and capital accumulation. In Malaysia, therefore, the government has formulated various strategies to encourage development of the SMEs with the objectives of economic growth, capital accumulation and creating employment opportunities. One of such strategies resulted in the formation of Credit Guarantee Corporation, as a guarantor for the SMEs. The booming phenomenon of Islamic finance especially in Malaysia has influenced the CGC to come up with Islamic guarantee scheme, parallel with the demand of Islamic financing products in the country. However, since the scheme was introduced by the Corporation, in general, the performance of the Islamic guarantee scheme has not performed as expected and has not been as competitive as the conventional guarantee scheme, even though the scheme has recorded positive growth for its products since the inception. This study, therefore, aims to explore the various demand conditions for the Islamic guarantee scheme with the objective of finding possible solutions for the gaps exist in the scheme. A survey schedule was conducted through e-mail questionnaires directed to the SME entrepreneurs. The data was analyzed by using SPSS version 15. The findings indicate that there are some gaps in the scheme's operations pertaining to promotional aspects, product development, staff competency, and government involvement. Hence, the effectiveness of the Islamic guarantee scheme can be questioned, although, undeniably there are some who have benefited from the services. It should also be stated that the majority of the entrepreneurs, due to such reasons, are excluded benefiting the positive side of the Islamic guarantee scheme due to the glitches in the system. This study, therefore, concludes that improvements related to various aspects of the CGC are needed in order to ensure that the Islamic guarantee scheme is continuously expanding in the future
Dr. Duane M. Jackson, Morehouse College, July 2011
No full textThis video is a conversation with Dr. Duane M. Jackson. Dr. Jackson talks about his paper, "Recall and the Serial Position Effect: The Role of Primacy and Recency on Accounting Students' Performance." Jackie Daniel, AUC Woodruff Library, is the interviewer
"Reflections on the subject of Emigration from Europe with a view to Settlement in the United States" By M. Carey.
No full text"Reflections on the subject of Emigration from Europe with a view to Settlement in the United States: containing bried sketches of the moral and political character of those states.
By M. Carey, member of the American philosophical, and of the American Antiquarian Society, and author of The Olive Branch, Cindiciae Hibernicae, essays on banking, on political economy, and on internal improvement.
To which are now added the English editor's comments on the subject; together with Important Advice to Emigrants, and Cautions Against Impositions Practiced in the Outports
Dispelling the Myths Behind First-author Citation Counts
No full textWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
Dr. Glendon Swarthout
No full textHosted by Roger M. Busfield, MSU Assistant Professor of Speech and Theater, Meet the Author is designed to introduce a general audience to a contemporary author and their work through in-depth interviews. This episode features a conversation between Dr. Glendon Swarthout, prolific author and English professor at MSU, and assistant professors Sam S. Baskett and Theodore B. Strandness
Phytochemical studies of Gnetum Microcarpum, Gnetum Cuspidatum, Cynometra Cauliflora, Bouea oppositifolia and their biological activities / Nik Fatini Nik Azmin
No full textIn the present work, phytochemical and pharmacological studies were conducted on four species of plants from three different families. The studied plant samples were the air-dried lianas of two species from Gnetaceae family which are Gnetum microcarpum Blume and Gnetum cuspidatum Blume and the twigs of Cynometra cauliflora Linn from the family of Fabacaeae and Bouea oppositifolia (Roxb.) Meisn from the family of Anacardiaceae. The aims of this study are to isolate the secondary metabolites from the plants, to propose biogenetic pathway of the new isolated compounds, to determine their DPPH scavenging, PGE2 inhibitory and cytotoxic activities and to study the Structure-Activity Relationship (SAR). The isolation process was done by conventional method of maceration, fractionation, separation and purification using several chromatographic techniques and structural elucidation was based on the spectroscopic data evidences and comparison with reported authentic data. Phytochemicals investigation on the lianas of the two Gnetum species yielded 11 known stilbenoid compounds; resveratrol (1), isorhapontigenin (3), gnetol (10), gnetifolin P (18), gnetofuran C (20), gnetucleistol C (21), cuspidan B (24), e-viniferin (31), parvifolol D (44), gnemonol M (48) and malaysianol D (388), two new compounds from G. microcarpum characterized as malaysianol E (25), malaysianol F (389) and one new compound from G. cuspidatum, namely malaysianol G (399). Phytochemicals investigation on C. cauliflora and B. oppositifolia gave 16 known flavonoid compounds; naringenin (263) and eriodictyol (262) were obtained from both species; flavone apigenin, acacetin, luteolin, luteolin 3',5 dimethyl ether, 3',4',7- trihydroxyflavone, 4',7-dihydroxyflavone (392-397) and 5,7-dihydroxychromone (391) from C. cauliflora; chalcone isoliquiritigenin (398), flavanone liquiritigenin and butin (399-400), flavanol taxifolin (260), fustin, garbanzol (401-402) and aurone sulfuretin (403) from B. oppositifolia. Both flavonoids and stilbenoids were derived from the combination of shikimate pathway and acetate pathway from a cinnamoyl- CoA starter unit and three molecule of malonyl-CoA extender unit to form intermediate polyketide. The enzyme stilbene synthase (STS) gave resveratrol which then undergo polymerization to produce larger stilbenoid, while chalcone synthase (CS) gave chalcone which then act as precursor for a vast range of flavonoid derivatives. In the DPPH assay, gnemonol M (48) and fustin (260) displayed good scavenging activity with IC50 of 30.07 and 23.93 uM, respectively, higher than that of standard trolox (IC50 83.22 uM). In the PGE2 inhibition assay, gnemonol M (48) and 4',7-dihydroxyflavone (397) exhibited significant activity with IC50 of 1.15 and 3.39 uM, respectively, comparable to the standard, indomethacin (IC50 1.29 uM). For cytotoxicity, all the tested compounds were found to be, either moderate, weak or not cytotoxic against HCT116 cancer cell line. In the SAR study of DPPH scavenging, the number of hydroxyl groups and the presence of an electron donating group are essential for stilbenoids, while the catechol moeity is in the top priority to exert flavonoids activity. Meanwhile, both type of compounds required the substituents which will contribute to their hydrophobicity and balance number of hydroxyl group in their structure in order to exert better PGE2 inhibitory activity
Simulation of thermal plant optimization and hydraulic aspects of thermal distribution loops for large campuses
No full textFollowing an introduction, the author describes Texas A&M University and its utilities system. After that, the author presents how to construct simulation models for chilled water and heating hot water distribution systems. The simulation model was used in a $2.3 million Ross Street chilled water pipe replacement project at Texas A&M University. A second project conducted at the University of Texas at San Antonio was used as an example to demonstrate how to identify and design an optimal distribution system by using a simulation model. The author found that the minor losses of these closed loop thermal distribution systems are significantly higher than potable water distribution systems. In the second part of the report, the author presents the latest development of software called the Plant Optimization Program, which can simulate cogeneration plant operation, estimate its operation cost and provide optimized operation suggestions. The author also developed detailed simulation models for a gas turbine and heat recovery steam generator and identified significant potential savings. Finally, the author also used a steam turbine as an example to present a multi-regression method on constructing simulation models by using basic statistics and optimization algorithms. This report presents a survey of the author??s working experience at the Energy Systems Laboratory (ESL) at Texas A&M University during the period of January 2002 through March 2004. The purpose of the above work was to allow the author to become familiar with the practice of engineering. The result is that the author knows how to complete a project from start to finish and understands how both technical and nontechnical aspects of a project need to be considered in order to ensure a quality deliverable and bring a project to successful completion. This report concludes that the objectives of the internship were successfully accomplished and that the requirements for the degree of Degree of Engineering have been satisfied
Phytochemical studies of Gnetum Microcarpum, Gnetum Cuspidatum, Cynometra cauliflora, Bouea oppositifolia and their biological activities / Nik Fatini Nik Azmin
No full textIn the present work, phytochemical and pharmacological studies were conducted on four species of plants from three different families. The studied plant samples were the air-dried lianas of two species from Gnetaceae family which are Gnetum microcarpum Blume and Gnetum cuspidatum Blume and the twigs of Cynometra cauliflora Linn from the family of Fabacaeae and Bouea oppositifolia (Roxb.) Meisn from the family of Anacardiaceae. The aims of this study are to isolate the secondary metabolites from the plants, to propose biogenetic pathway of the new isolated compounds, to determine their DPPH scavenging, PGE2 inhibitory and cytotoxic activities and to study the Structure-Activity Relationship (SAR). The isolation process was done by conventional method of maceration, fractionation, separation and purification using several chromatographic techniques and structural elucidation was based on the spectroscopic data evidences and comparison with reported authentic data. Phytochemicals investigation on the lianas of the two Gnetum species yielded 11 known stilbenoid compounds; resveratrol (1), isorhapontigenin (3), gnetol (10), gnetifolin P (18), gnetofuran C (20), gnetucleistol C (21), cuspidan B (24), e-viniferin (31), parvifolol D (44), gnemonol M (48) and malaysianol D (388), two new compounds from G. microcarpum characterized as malaysianol E (25), malaysianol F (389) and one new compound from G. cuspidatum, namely malaysianol G (399). Phytochemicals investigation on C. cauliflora and B. oppositifolia gave 16 known flavonoid compounds; naringenin (263) and eriodictyol (262) were obtained from both species; flavone apigenin, acacetin, luteolin, luteolin 3',5 dimethyl ether, 3',4',7-trihydroxyflavone, 4',7-dihydroxyflavone (392-397) and 5,7-dihydroxychromone (391) from C. cauliflora; chalcone isoliquiritigenin (398), flavanone liquiritigenin and butin (399-400), flavanol taxifolin (260), fustin, garbanzol (401-402) and aurone sulfuretin (403) from B. oppositifolia
Intern experience at CH���M Hill, Inc.: an internship report
No full textIncludes author's vita"Submitted to the College of Engineering of Texas A&M University in partial
fulfillment of the requirement for the degree of Doctor of Engineering."Includes bibliographical referencesA review of the author's internship experience with CH���M HILL, Inc.
during the period September 1975 through May 1976 is presented. During this nine month
internship the author worked as an Engineer II in the Industrial Processes discipline of this
large consulting engineering firm... The author's prime responsibility was as one of three
lead design engineers on the design of a large wastewater treatment facility for a pulp mill
in Hoquiam, Washington owned by ITT Rayonier Inc. The work generally consisted of the design
of individual treatment units and associated piping and pumping. The purpose of the project
was to provide wastewater treatment capabilities that would satisfy the effluent limitations
(standards) imposed upon the mill by the State of Washington Department of Ecology and the
U.S. Environmental Protection Agency. The author's assignment also entailed necessary
interaction with the project manager and other CH���M HILL design engineers and support staff
members, the client's representatives, and representatives of two other consulting engineering
firms working on the project. Thus, the internship position at CH���M HILL provided considerable
experience coordinating the author's work with the work of other engineers, guiding the design
and administrative efforts of a support staff, and interacting regularly with the client and
other consulting firms. This broad exposure to a variety of engineering and organizational
problems provided a valuable educational experience
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