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Articles 11521 - 11537 of 11537
Full-Text Articles in Entire DC Network
Thermodynamic Properties Of Monochlorobenzene, Gaetano Zaccaria
Thermodynamic Properties Of Monochlorobenzene, Gaetano Zaccaria
Theses
The thermodynamic properties of saturated and superheated monochlorobenzene were evaluated at ten degree temperature intervals from 0°C to 750°C and at various pressures up to 300 atmospheres.
Equations relating the specific heat, the vapor pressure, and the density with temperature, were derived from the data available in the literature. They were used together with generalized charts to evaluate the thermodynamic properties.
The values for temperature, pressure, specific volume, enthalpy, and entropy for saturated and superheated monochlorobenzene are presented in the form of tables.
An Analysis Of Predetermined Time Systems, Richard Otto Schmid
An Analysis Of Predetermined Time Systems, Richard Otto Schmid
Theses
This paper endeavors to compare three predetermined time systems, namely; Work-Factor, Methods-Time Measurement and Basic Motion Time-study, elemental-by-elemental, through the use of a series of detailed analyses. The following information in the form of conclusions and recommendations has been set forth from the investigation of the various comparative analyses contained herein:
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Reasons for the variation between the elementals.
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A chronological order of attack for further study with an eye to accomplishing the most in the shortest possible time.
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The results of a composite analysis which utilizes the most realistic elemental definitions of the three systems. (This includes the comparison of …
The Control Of Industrial Sales Operations, Herbert Gieser
The Control Of Industrial Sales Operations, Herbert Gieser
Theses
With selling becoming so competitive in the past quarter century, managerial control over the sales organization is necessary for survivals Essentially, controls cover the regulation and administration of territories, expenses, and the measurement of performance.
The purpose of this thesis is to investigate the various phases of controls, the many plans which can be applied, and the advantages and disadvantages of these plans. Emphasis is placed on the case studies of some of the many firms which have put these control programs to work successfully.
This thesis is intended for management executives, sales managers, and sales staff executives in equipping …
Hydrolysis Of Sodium Silicofluoride, Frank Arthur Graf
Hydrolysis Of Sodium Silicofluoride, Frank Arthur Graf
Theses
The kinetics of an apparent solubility decrease of commercial sodium fluoride encountered in a piece of equipment designed to produce saturated sodium fluoride solution was Investigated, in order to understand why a consistently saturated solution was not possible to achieve with plain tap water as solvent.
The main impurity, about 1 percent sodium silicofluoride, coats the sodium fluoride crystals, resulting in an equilibrium shift during dissolution of the salt in water; and under certain conditions results in the formation of a protective gel. Therefore, in order to produce a constant strength sodium fluoride solution, this coated impurity must be decomposed …
Activity Coefficients Of Gases In Binary Mixtures, John Gressler Engleman
Activity Coefficients Of Gases In Binary Mixtures, John Gressler Engleman
Theses
The theory and usefulness of vapor phase activity coefficients have been developed. The equations, charts and calculation procedures to be used for the three methods are included with a set of sample calculations in their most convenient form.
Activity coefficients for 236 experimental points have been calculated by the three methods for both components of tour binary gaseous systems. These systems are Argon - Ethylene (36 points), Hydrogen - Nitrogen (32 points), Methane - Ethane (112 points) and Methane - n Butane (56 points). Wide ranges of pressure, temperature and mol fraction are included.
The % deviations of calculated from …
Composting Coffee Waste, Lawrence James Hickey
Composting Coffee Waste, Lawrence James Hickey
Theses
Disposal of waste, and specifically organic waste, has become a serious problem in such industries as the canning, meat-packing, dairy and other food producing industries. Recently, with the introduction of instant coffee powder, this particular industry now has a waste disposal problem with the resultant coffee residue. Composting or biologically decomposing this waste to yield an organic fertilizer is one of the many ways to solve this problem.
There are no papers in the literature concerning composting of coffee waste and only one paper (65) is available covering studies of high rate composting of garbage and refuse. It is known …
A Study Of The Functional Stability Of Sunscreen Compounds, Jesse Howard Starkman
A Study Of The Functional Stability Of Sunscreen Compounds, Jesse Howard Starkman
Theses
Previous work reported in literature, indicates that commercial sunscreen compounds were subject to breakdown on exposure to ultraviolet radiation with consequent change in their functional efficiencies.
These findings ware retested under conditions more closely approximating actual usage.
A new method of evaluation which closely correlates to actual experience in large scale usage, was applied. This method provides, from simple spectral data, a reliable index of physiological efficiency of the sunscreen compound. As a result, twelve commercial sunscreen compounds were exposed to ultraviolet radiation for varying periods. Analysis indicated that, contrary to the previous reports, no significant Changes in physiological efficiency …
Bis Phenol Epichlorohydrin Condensate Modification Of Alkyd Resins, Raymond Francis Carmody
Bis Phenol Epichlorohydrin Condensate Modification Of Alkyd Resins, Raymond Francis Carmody
Theses
A method is given for the modification of alkyd resin systems with Bis-Phanol Epichlorohydrin Condensates.
The properties of the modified alkyd resins are evaluated using similar unmodified alkyd resins as reference.
A theory of linear esterification is postulated.
Heat Capacity Ratios Calculated From The Benedict-Webb-Rubin Equation State, Edward George Delaney
Heat Capacity Ratios Calculated From The Benedict-Webb-Rubin Equation State, Edward George Delaney
Theses
The ratio of the isobaric heat capacity to the constant volume heat capacity has been calculated over a range of temperatures and pressures for the following hydrocarbons: methane, ethylene, ethane, propane, and n-butane. Graphs and tables of calculated data are presented showing the effect of temperature and pressure on the ratio of the heat capacities for these compounds.
The deviations of the heat capacities from ideal gas behavior were calculated by previous investigators from an equation based on the Benedict-Webb-Rubin equation of state, Experimental data were used to evaluate the heat capacities of the ideal gases, and were used together …
The Reduction Of Aromatic Nitro Compounds With Anhydrous Stannous Chloride, Raymond Albert Unnasch
The Reduction Of Aromatic Nitro Compounds With Anhydrous Stannous Chloride, Raymond Albert Unnasch
Theses
With the publication of a method for the preparation of anhydrous stannous chloride (1), T. E. de Kiewiet and H. Stephen were prompted to investigate its use in the reduction of aromatic nitro compounds under anhydrous conditions. In a paper entitled "A New Method of Reducing Aromatic nitro Compounds" (2), reporting the results of this investigation, they claimed simultaneous reduction, acetylation, and also chlorination in the position para to that of the original nitro group.
In experiments using para substituted nitro compounds, they found that no chlorination took place except in the case of para-chloronitro-benzene, which, if hydrochloric acid were …
The Development Of Executives, Joseph Ralph Messineo
The Development Of Executives, Joseph Ralph Messineo
Theses
The ever-increasing trend toward improved industrial efficiency creates the problem of supplying capable executives. The supply of executive manpower in business corporations ever needs replenishing. Expansion of operations, retirements, and other circumstances cause executive demands and vacancies which must be filled. Therefore, the purpose of this thesis is to analyze and report on what industry is actually doing today to develop executives to meet present and future requirements. Also, it is the author's intent to formulate a comprehensive executive development program that can be adopted with some limitations by industry for the building of an executive reserve.
In order to …
Manual For Quality Control, Frank Andrew Antalec
Manual For Quality Control, Frank Andrew Antalec
Theses
Modern trends of industrial development have been directed toward increased output of products with greater precision and uniformity. This necessitates an inspection function that reflects more effective results than ever before. In order to rise to this occasion full use must be made of today's principles and techniques of inspection and quality control.
Industry demand the use of high precision measuring instruments to aid the inspection function in obtaining effective results. Recently, however, the techniques of Quality Control have become a well-known, useful, tool for the solution of many manufacturing problems. Effective use of these techniques depends on their complete …
The Synthesis Of 2-Amino-4-Chlorophenol-6 Sulfonic Acid, Herman Albert Bronner
The Synthesis Of 2-Amino-4-Chlorophenol-6 Sulfonic Acid, Herman Albert Bronner
Theses
The work described in this thesis was undertaken with the view of exploring a reaction sequence suggested by early French investigators to synthesize 2-amino-4-chlorophenol-6-sulfonic acid especially in reference to the German claim that a low yield of product would result following this preparation, In particular, a successful application of this procedure would afford a relatively direct and inexpensive route to the sulfonic acid which is used as an azo dyestuff intermediate and could possibly find application in medicinal chemistry.
It was found that sulfonation and nitration of p-dichlorobenzene gave a high yield of the sodium-2-nitro-1,4-3 dichloro-benzene-6-sulfonate (91%) when using the …
Waterfront Construction In New York Harbor, Carman William Garrison
Waterfront Construction In New York Harbor, Carman William Garrison
Theses
The following chapters are devoted to the various phases of that branch of construction which is followed from the offshore side of the waterfront. This branch, in the parlance of the building trades, is known as dockbuilding. Years ago all waterfront structures in New York Harbor were constructed almost entirely of timber and experience taught that the most economical approach for building docks and wharves was made by utilizing floating piledrivers and derricks. Thus it happened that dockbuilders became skilled both in the use of wood framing tools and in handling marine equipment. Modern dockbuilders must have, in addition to …
Organic Ion-Exchange Materials, Harry Burrell
Organic Ion-Exchange Materials, Harry Burrell
Theses
This thesis is offered as partial fulfilment for the degree of Chemical Engineer at the Newark College of Engineering. It covers a very new subject - one which has been rather intensively developed by several investigators during the past three years. The writer has had the fortunate opportunity of working on organic ion-exchange materials at the Ellis-Foster Co., which kindly gave permission through Mr. Carleton Ellis for the publication of experimental results. Many thanks are due to Dr. Frank B. Root, the laboratory director, whose gracious, constructive criticisms aided the writer in all phases of the work.
An attempt has …
The Rahway Valley Trunk Sewer And Its Relations To, And Effect Upon The City Of Rahway, Fred A. Hedeman
The Rahway Valley Trunk Sewer And Its Relations To, And Effect Upon The City Of Rahway, Fred A. Hedeman
Theses
This treatise is divided into three separate parts, each portraying a particular phase of the Rahway Valley improvement. Although not directly connected with the Joint Meeting, the fact that I served as Assistant City Engineer in Rahway during 1931 and 1932 naturally presented to me the opportunity of attending meetings and studying the project especially as it pertained to the City of Rahway.
Part one is a general review of the activities of the Rahway Valley Joint Meeting, both prior to and after the completion of the trunk sewer. The second portion reveals some of the intricate problems evolving in …
Problems Encountered In The Development Of An Airport, A. H. Armstrong
Problems Encountered In The Development Of An Airport, A. H. Armstrong
Theses
The progress of a nation and. its transportation facilities have always advanced hand in hand.
Just as it has always beerthe Civil Engineer's problem to develop facilities for other means of transportation, such as roads, harbors, and. railroad terminals, so is it his problem today to build airports.
In presenting the problems encountered in the development of an airport, the writer has considered the airport's place in city and regional planning, as well as the part it plays in air transportation.
An expression of thanks is given to Mr. Wm. S. La Londe, Jr., professor in Civil Engineering at the …