Electroplating on titanium alloy

Activation process forms adherent electrodeposits of copper, nickel, and chromium on titanium alloy. Good adhesion of electroplated deposits is obtained by using acetic-hydrofluoric acid anodic activation process

Solar energy absorption characteristics and the effects of heat on the optical properties of several coatings

The solar energy absorption characteristics of several high temperature coatings were determined and effects of heat on these coatings were evaluated. Included in the investigation were an electroplated alloy of black chrome and vanadium, electroplated black chrome, and chemically colored 316 stainless steel. Each of the coatings possessed good selective solar energy absorption properties at laboratory ambient temperature. Measured at a temperature of 700 K (800 F), the emittances of black chrome, black chrome vanadium, and colored stainless steel were 0.11, 0.61, and 0.15, respectively. Black chrome and black chrome vanadium did not degrade optically in the presence of high heat (811 K (1000 F)). Chemically colored stainless steel showed slight optical degradation when exposed to moderately high heat (616 K (650 F)0, but showed more severe degradation at exposure temperatures beyond this level. Each of the coatings showed good corrosion resistance to a salt spray environment

Investigation of the Technical Micronics Control /TMC/ Process for Electropolishing Various Metals

Technical micronics control process for electropolishing metals and alloy

Solar absorption characteristics of several coatings and surface finishes

Solar absorption characteristics are established for several films potentially favorable for use as receiving surfaces in solar energy collectors. Included in the investigation were chemically produced black films, black electrodeposits, and anodized coatings. It was found that black nickel exhibited the best combination of selective optical properties of any of the coatings studied. A serious drawback to black nickel was its high susceptibility to degradation in the presence of high moisture environments. Electroplated black chrome generally exhibited high solar absorptivities, but the emissivity varied considerably and was also relatively high under some conditions. The black chrome had the greatest moisture resistance of any of the coatings tested. Black oxide coatings on copper and steel substrates showed the best combination of selective optical properties of any of the chemical conversion films studied

Environmental durability of electroplated black chromium

A study was undertaken to determine the durability of nickel-black chromium plated aluminum in an outdoor rural industrial, and seacoast environment. Test panels were exposed to these environments for 60, 36, and 13 months, respectively. The results of this study showed that no significant optical degradation occurred from exposure to either of these environments, although a considerable amount of corrosion occurred on the panels exposed to the seacoast environment. The rural and industrial atmosphere produced only a slight amount of corrosion on test panels

Independent Orbiter Assessment (IOA): Assessment of the data processing system FMEA/CIL

The results of the Independent Orbiter Assessment (IOA) of the Failure Modes and Effects Analysis (FMEA) and Critical Items List (CIL) are presented. The IOA effort first completed an analysis of the Data Processing System (DPS) hardware, generating draft failure modes and potential critical items. To preserve independence, this analysis was accomplished without reliance upon the results contained within the NASA FMEA/CIL documentation. The IOA results were then compared to the NASA FMEA/CIL baseline with proposed Post 51-L updates included. A resolution of each discrepancy from the comparison is provided through additional analysis as required. The results of that comparison is documented for the Orbiter DPS hardware

Prediction Markets: Alternative Mechanisms for Complex Environments with Few Traders

Double auction prediction markets have proven successful in large-scale applications such as elections and sporting events. Consequently, several large corporations have adopted these markets for smaller-scale internal applications where information may be complex and the number of traders is small. Using laboratory experiments, we test the performance of the double auction in complex environments with few traders and compare it to three alternative mechanisms. When information is complex we find that an iterated poll (or Delphi method) outperforms the double auction mechanism. We present five behavioral observations that may explain why the poll performs better in these settings

Alien Registration- Lowery, James J. (Portland, Cumberland County)

https://digitalmaine.com/alien_docs/22122/thumbnail.jp

A history of the first fifteen years of community colleges in Iowa 1965-1980

The purpose of this study was to trace the events of the transition from the locally-owned public junior colleges in Iowa to the state system of community colleges, and to analyze and record the first 15 years of operation of the new comprehensive community colleges. A review was also made of the two-year colleges on the national level and of earlier efforts to provide postsecondary education at the two-year level in Iowa;The major sources of information were from national and state studies of two-year colleges, the Iowa General Assembly, the Iowa State Board of Education minutes, records from the colleges, annual reports from the Iowa Department of Public Instruction and from personal interviews;Major factors influencing the transition were: (1) the limited access to the locally-owned junior colleges; (2) the movement in the state from a rural to an industrial economy; (3) the infusion of federal dollars into vocational education; and (4) the need to expand postsecondary educational opportunities in the state, especially in vocational education;Institutional topics given major consideration during the 15-year period of operation were students and student services, faculty, instructional programs, campus developments, finances, governance, and the status of the graduates;The findings of the study revealed that over the 15-year period the number of full-time equivalent students attending two-year colleges in Iowa grew from 11,136 in 1966-67 to 48,050 during 1979-80. The headcount enrollment in 1979-80 grew to 498,061. The enrollment in college transfer courses remained rather constant while vocational enrollment showed tremendous growth. The number of vocational programs grew from 12 in 1945 to 145 in 1980. Education for adults of all ages grew tremendously with 48,689 individuals earning a high school diploma or the equivalent between 1966 and 1980. Follow-up studies of the graduates entering employment, showed 85.8 percent were employed in jobs related to their training. Of the graduates transferring to either of the three state universities, a slight drop in grade point average occurred during the first term, but in succeeding terms the grade point improved

Evaluation of a guided decision aid for treatment selection in follicular non -Hodgkin\u27s lymphoma

Decision aids for treatment selection have improved the decision-making process by increasing patient knowledge, decreasing decisional conflict (or uncertainty), increasing strength of preference for an option, and increasing decision satisfaction. Decision aids provide information and assist patients in making informed medical decisions. Guided decision aids help patients weigh pros and cons of options. This study involved the creation and evaluation of a guided decision aid for patients with follicular lymphoma, a disease with multiple complex treatment options. The aid was evaluated in a non-patient sample (30 males and 30 females, aged 40 to 79). Participants received either the guided decision aid or a comparison decision aid. Participants were asked to make a decision as if they were patients with follicular lymphoma by rating preference for each option and rank ordering treatment options before and after reading the materials. Decision satisfaction, decisional conflict, and knowledge of follicular lymphoma were assessed before and after reading the materials. Both groups showed a comparable increase in decision satisfaction, decrease in decisional conflict, and increase in knowledge after reading the materials. Thus, the decision aid was effective in improving the decision-making process. Both groups showed a change in preference for treatment options when rating treatment preference; however, only the comparison group showed a change in treatment preference when treatments were rank-ordered. Preference increased for watch and wait and biologic therapy and decreased for stem cell transplantation. The extent to which age, education, gender, depression, anxiety, need for cognition, and monitory/blunting predicted variability in satisfaction with decision and decisional conflict was examined. There were no significant predictors of residualized change in decision satisfaction; however, age significantly predicted residualized change in decisional conflict, and younger participants showed a decrease in decisional conflict. Analysis of the extent to which reading time and decision-making time predicted residualized change in knowledge suggested that longer reading times showed an increase in knowledge. These findings suggest that receiving information about follicular lymphoma effectively improved the decisionmaking process for a non-patient sample regardless of whether treatment preference changed. Additionally, the findings suggest that the guided decision aid may be more effective for younger ages