Digital Commons Network^™

Alum And Pacl Coagulation, Winarni Winarni

Makara Journal of Technology

Alum and PACl Coagulation. Coagulation occurs by interaction of aluminum hydrolysis products with the contaminant such as colloidal particles. It is necessary to consider the different aluminum species that may present during specific conditions, since the mechanism of turbidity removal is dependent upon them. PACl consists of preformed aluminum hydrolysis products, which are stable below pH 6 and less sensitive than in situ hydrolysis product, alum. The benefits of PACl relative to alum have been investigated as a function of pH and Al dosages. Specific conditions and aluminum species that exist during the certain mechanisms of coagulation are discussed. Results …

The Selection Of Materials For Roller Chains From The Perspective Of Manufacturing Process, Rahmat Saptono

Makara Journal of Technology

The selection of materials for an engineering component is not only requested by its design function and shape, but also the sequence through which it is manufactured. The manufacturing operation of roller chains involves drawing and trimming processes aimed at producing semi-finished chain drives component with a well-standardized dimension. In addition to final combination of properties required by design constraints, the ability of materials to be formed into a desired shape and geometry without failure is also critical. The objective of materials selection should therefore involve additional attributes that are not typically accommodated by the standard procedure of materials selection. …

Mustang Daily, December 3, 2003

Cal Poly Student Newspaper

Student newspaper of California Polytechnic State University, San Luis Obispo, CA.

Optimal Control Of Delayed Differential-Algebraic Inclusions, Boris S. Mordukhovich, Lianwen Wang

Mathematics Research Reports

This paper concerns constrained dynamic optimization problems governed by delayed differential-algebraic systems. Dynamic constraints in such systems, which are particularly important for engineering applications, are described by interconnected delay-differential inclusions and algebraic equations. We pursue a two-hold goal: to study variational stability of such control systems with respect to discrete approximations and to derive necessary optimality conditions for both delayed differential-algebraic systems and their finite-difference counterparts using modern tools of variational analysis and generalized differentiation. We are not familiar with any results in these directions for differential-algebraic inclusions even in the delay-free case. In the first part of the paper …

Magnetic Transitions In Disordered Gdal2, D. S. Williams, Paul M. Shand, Thomas M. Pekarek, Ralph Skomski, Valeri G. Petkov, Diandra Leslie-Pelecky

Materials Research Science and Engineering Center: Faculty Publications

The role of disorder in magnetic ordering transitions is investigated using mechanically milled GdAl₂. Crystalline GdAl₂ is a ferromagnet while amorphous GdAl₂ is a spin glass. Nanostructured GdAl₂ shows a paramagnetic-to-ferromagnetic transition and glassy behavior, with the temperature and magnitude of each transition dependent on the degree and type of disorder. Disorder is parametrized by a Gaussian distribution of Curie temperatures T_C with mean T_C and breadth Δ T_C. A nonzero coercivity is observed at temperatures more than 20 K above the highest T_C of any known Gd-Al phase; however, …

December 3, 2003 Faculty Senate Minutes, University Of South Carolina

Faculty Senate

No abstract provided.

Adapting An Effective Interface For A Passive Solar System With A Truncated Pyramid Concentrator, Shirley M. Flinders

Morehead State Theses and Dissertations

A thesis presented to the faculty of the College of Science and Technology at Morehead State University in partial fulfillment of the requirements for the Degree of Masters of Science by Shirley M. Flinders on December 3, 2003.

The Market And Welfare Effects Of The New National Organic Program, Amalia Yiannaka

Cornhusker Economics

Organic agriculture is one of the fastest growing industries in the United States (U.S.). Organic food sales are growing at a rate of more than 20 percent annually, totaling $7.8 billion in 2000 [1].1 Advocates of the recently introduced national organic standards predict that their introduction will further enhance the growth of the organic sector.

Panther- December 2003 - Vol. Lxxxi, No.12, Prairie View A&M University

PV Panther Newspapers

No abstract provided.

Adoption Of Variable Rate Technology, Isti Surjandari, Marvin T. Batte

Makara Journal of Technology

Site Specific Management (SSM), which also variously referred to as Variable Rate Technology (VRT), is an emerging technology that enables producers to make more precise input application decisions based on soil and field characteristics. This study analyzes factors influencing the adoption of VRT for fertilizer application for cash grain production in Ohio. Results show that producer and field characteristics might influence the adoption decision on various SSM components differently. It also provides insight as to the sequence of adoption of SSM component technologies and how this sequence might differ for producers of differing characteristics.

Faculty Senate Monthly Packet December 2003, Portland State University Faculty Senate

Faculty Senate Monthly Packets

The December 2003 Monthly packet includes the December agenda and appendices and the Faculty Senate minutes and attachments from the meeting held November 2003.

Study On Electrochromic Effect Of Polyaniline Film, Lienda Handojo, Junus Simangunsong

Makara Journal of Technology

Study on Electrochromic Effect of Polyaniline Film. The light transmission factor of an electrochromic film changes reversibly with the application of an electrical voltage. Thereby the transparent film becomes reversibly opaque so that it may be used to control light transmission. In this paper the results of a study on polyaniline film as an electrochromic active material is reported. Polyaniline looks yellow transparent in the reduced state and turns to green-blue at its oxidized state. The electrochromic device considered in this paper was fabricated in planar configuration of ITO glass − polyaniline film − electrolyte − ITO glass which involved …

An Economic Analysis Of Variable Rate Technology, Isti Surjandari, Marvin T. Batte, Mario J. Miranda

Makara Journal of Technology

Variable Rate Technology (VRT) offers an opportunity to improve production efficiency by allowing input applications to fluctuate in response to spatial variations in soil characteristics and nutrient levels. Society may also benefit from reduced negative externalities, such as surface and groundwater contamination, from input applications. Using a dynamic spatial model, this study examines how the interaction among variability, spatial autocorrelation, and mean level of soil fertility affects optimal sampling density and the economic gains from VRT. VRT was found to be profitable under selected conditions, and the optimal grid size will vary with these conditions. In the case where variability …

Application Of Tabu Search Algorithm In Job Shop Scheduling, Betrianis Betrianis, Putu Teguh Aryawan

Makara Journal of Technology

Application of Tabu Search Algorithm in Job Shop Scheduling. Tabu Search is one of local search methods which is used to solve the combinatorial optimization problem. This method aimed is to make the searching process of the best solution in a complex combinatorial optimization problem(np hard), ex : job shop scheduling problem, became more effective, in a less computational time but with no guarantee to optimum solution.In this paper, tabu search is used to solve the job shop scheduling problem consists of 3 (three) cases, which is ordering package of September, October and November with objective of minimizing makespan (Cmax). …

The Spinnaker Vol. 27 No. 15, University Of North Florida

Spinnaker

Student newspaper for the UNF community.

Illinois Wesleyan Physicist, St. Andrews Colleagues Develop New Technique Using Light To Sort Cells, Jeffery Hanna

News and Events (Discontinued Series)

No abstract provided.

Role Of K3-Xhxpw12o40 As A Catalyst In Selective Catalysis Of Methylamine Synthesis From Ammonia And Methanol, Mohammad Nasikin

Makara Journal of Technology

Role of K3-xHxPW12O40 as a Catalyst in Selective Catalysis of Methylamine Synthesis from Ammonia and Methanol. Synthesize of methylamine from methanol and ammonia was studied in this research work using a partially potassium heteropoly salt (K3-xHxPW12O40 abbreviated as KPW) as a catalyst. KPW was prepared from heteropoly salt and potassium carbonate by using ion exchange method. The reaction was conducted at 600 ~ 800K and at the atmospheric pressure. Reactor used was a continue flow reactor with W/F=0,1~0,9g-kat.mnt./cc.Concentration of reactants and products were analyzed by gas chromathography while catalyst structure was observed by XRD (X-ray diffraction). Isothermal adsorption method was …

Identification Of The First Limiting Amino Acid In Cooked Polished White Rice Fed To Weanling Holtzman Rats, Mellova Masrizal, J. B. Lamb

Makara Journal of Technology

Forty-eight male weanling rats (91 g) were utilized to study the nutritional adequacy of cooked polished white rice. Rats were individually housed, and allowed ad libitum access to one of six treatment diets. Treatment diets were 1) polished white rice plus 10% casein and 0.18% methionine, CAS, 2) polished white rice, WHR, 3) polished white rice plus 0.45% lysine, LYS, 4) polished white rice plus0.40% methionine, MET, 5) polished white rice plus 0.30% threonine, THR, 6) polished white rice plus 0.45% lysine, 0.40% methionine, and 0.40% threonine, COM. Rice was cooked prior diet formulation using a 3 to 1 ratio …

Habitat Features And Predictive Habitat Modeling For The Colorado Chipmunk In Southern New Mexico, Marina Rivieccio, Bruce C. Thompson, William R. Gould, Kenneth G. Boykin

Western North American Naturalist

Two subspecies of Colorado chipmunk (state threatened and federal species of concern) occur in southern New MeXico: Tamias quadrivittatus australis in the Organ Mountains and T. q. oscuraensis in the Oscura Mountains. We developed a GIS model of potentially suitable habitat based on vegetation and elevation features, evaluated site classifications of the GIS model, and determined vegetation and terrain features associated with chipmunk occurrence. We compared GIS model classifications with actual vegetation and elevation features measured at 37 sites. At 60 sites we measured 18 habitat variables regarding slope, aspect, tree species, shrub species, and ground cover. We used logistic …

Western Scrub-Jay Breeding Biology In Central Colorado, Kerri Vierling, Barbara L. Winternitz

Western North American Naturalist

The breeding ecology of the Western Scrub-Jay (Aphelocoma californica) in the midwestern United States is relatively unknown compared with Aphelocoma species in other geographic regions. We examined Western Scrub-Jay breeding biology in Colorado between 1970 and 1992. Incubation was initiated in early April and lasted 16 days, while the nestling stage lasted approximately 17-18 days. Clutch size averaged 4.0 eggs per nest, reproductive success was 25%, and productivity averaged 0.66 fledglings per nest. The low reproductive success and productivity measures may be due to high predator densities in the surrounding suburban landscape. Western Scrub-Jays preferred nesting in eastern …

Academic Senate - Agenda, 12/2/2003, Academic Senate

Academic Senate Agendas

No abstract provided.

Minutes December 2, 2003

Agendas and Minutes

No abstract provided.

Agenda December 2, 2003

Agendas and Minutes

No abstract provided.

Sr-03-04-12 La, Marshall University

Recommendations

No abstract provided.

U.S. Infringement Liability For Foreign Sellers Of Infringing Products, Troy Petersen

Duke Law & Technology Review

With the ever-increasing international flavor of business comes an important question for United States patent holders and foreign manufacturers alike: Can a company be held liable for patent infringement in the United States for selling an infringing product abroad that is later imported into the United States?

Optical System With 1xn Interleaver And Methods Of Making And Using Same, Michael A. Scobey, Lucien P. Ghislain, Dennis J. Derickson, Loren F. Stokes

Electrical Engineering

An optical system and method are disclosed for multiplexing or de-multiplexing channels within a wavelength band. The optical signals carried on the system comprise separate channels 1 through n, each having a unique passband and a center wavelength spaced from the center wavelength of adjacent channels by d nm. The signals are semi-multiplexed, demultiplexed, or semi-demultiplexed by an interleaver comprising optically matched and directly optically coupled etalons. Periodic spectral passbands of width less than d nm, spaced from each other a distance of zd, where z is an integer greater than or equal to 3, are substantially transmitted through the …

Academic Senate - Meeting Minutes, 12/2/2003, Academic Senate

Academic Senate Minutes

No abstract provided.

The New Hampshire, Vol. 93 [94], No. 22 [23] (Dec. 2, 2003), The New Hampshire

The New Hampshire Print Edition

An independent student produced newspaper from the University of New Hampshire. This volume was printed as 93, but it is the 94th volume in the series. This was corrected in pencil.

This issue was printed as 22, but it is the 23rd issue in this volume. This was corrected in pencil.

Self Assembled Nano-Devices Using Dna, Ravi F. Saraf

Department of Chemical and Biomolecular Engineering: Patents

An article of manufacture including an organic structure and inorganic atoms bonded to specific locations on the organic structure.

Superplastic Forming Of Micro Components, Rajiv S. Mishra

Materials Science and Engineering Faculty Research & Creative Works

A method for forming a miniaturized shaped component. Bulk superplastic material is contacted with a flat rotating surface of a rotating tool to frictionally heat the bulk superplastic material with the bulk superplastic material positioned between the flat rotating surface of the tool and a micro fabricated tool die. The bulk superplastic material is forced into the microfabricated die once the bulk superplastic material is heated to a temperature between a glass transition temperature and a crystallization temperature.