Metabuscador

Filtrado por:

Recursos

McGill University - MCGILL (35)

Más...

Año

1966 (1)
1962 (3)
1961 (1)
1959 (1)
1958 (1)
1957 (3)
Más...

Aproximadamente 35 registro(s) hasta el momento: (knowledge)

Mostrar 10 | 50 | 100 resultados por página

Recurso libre

Xanthate methyl esters of glucose and of cellulose.
Sanyal, Amiya. K.

Formato:	Electronic Thesis or Dissertation
Enlaces:	Although sodium xanthates of cellulose form the basis of the cellophane and viscose rayon industries and are of great commercial importance, no reliable information about the detailed chemical structure of these xanthates exists. A considerable amount of knowledge concerning the…
Fecha:	1953
Recurso:	McGill University - MCGILL

Recurso libre

The location of the xanthate groups in partly substituted cellulose xanthates.
Swan, Eric. P.

Formato:	Electronic Thesis or Dissertation
Enlaces:	The existence of cellulose sodium xanthate has been known for over 60 years; the salt forms the basis of the important commercial process for making viscose rayon and cellophane. Yet, until very recently, no detailed knowledge of the chemical structure…
Fecha:	1957
Recurso:	McGill University - MCGILL

Recurso libre

A study of the completely extracted fibrous portion of white spruce bark.
Gardner, Prescott. E.

Formato:	Electronic Thesis or Dissertation
Enlaces:	The expanding use of wood pulp and pulp products has emphasized the need for increased basic knowledge dealing with the waste materials and by-products of the forest industries. Wood bark is one or the major byproducts. In the paper industry…
Fecha:	1958
Recurso:	McGill University - MCGILL

Recurso libre

Studies on the combining ratios of monomers in copolymerization.
Henery-Logan, Kenneth Robert.

Formato:	Electronic Thesis or Dissertation
Enlaces:	The large-scale production of synthetic rubber has shown the necessity of obtaining fundamental knowledge concerning the chemical structure of polymers and copolymers. The mechanical and chemical properties of the final polymer and ease of processing have been found to be…
Fecha:	1946
Recurso:	McGill University - MCGILL

Recurso libre

a Study of Periodate Lignin Lignosulfonic Acids.
Brickman, W. James.

Formato:	Electronic Thesis or Dissertation
Enlaces:	Over sixty years ago the first chemical investigations were reported on waste sulfite liquor from the pulping of wood, but despite a large volume of research in the intervening period, the sulfonation reaction and its products remain an intriguing unsolved…
Fecha:	1953.
Recurso:	McGill University - MCGILL

Recurso libre

the Reactions of Nitrogen Atoms with Ethylene and Acetylene.
Versteeg, Joseph.

Formato:	Electronic Thesis or Dissertation
Enlaces:	As knowledge in chemical kinetics has advanced from the first study of reaction rates by Wilhelmy (1) in 1850, it has become increasingly clear that many reactions take place by a sequence of simple steps, or elementary reactions. This implies…
Fecha:	1952.
Recurso:	McGill University - MCGILL

Recurso libre

Some New Reactions and Derivatives of Kojic Acid.
Beelik, Andrew.

Formato:	Electronic Thesis or Dissertation
Enlaces:	Kojic acid can be produced by a microbiological process from carbohydrates, and therefore it might serve as a very useful outlet for industrial and agricultural carbohydrate wastes. Since the acid has not yet found practical applications, the present research is…
Fecha:	1954.
Recurso:	McGill University - MCGILL

Recurso libre

The composition of the oils from some Canadian conifers.
Shaw, Alan. C.

Formato:	Electronic Thesis or Dissertation
Enlaces:	During the steps employed in the conversion of the standing tree to wood pulp about two-thirds of the original plant material is discarded, and of the many hundreds of compounds present in the tree only cellulose is utilized to an…
Fecha:	1955
Recurso:	McGill University - MCGILL

Recurso libre

Further oxidations of spruce periodate lignin with chlorine dioxide.
Thompson, Norman. S.

Formato:	Electronic Thesis or Dissertation
Enlaces:	Note: Missing title page., Several years ago the Wood Chemistry Committee of the Technical Section, Canadian Pulp and Paper Association, observed that chlorine dioxide was becoming of importance as a bleaching agent for pulps, and that more detailed knowledge concerning…
Fecha:	1954
Recurso:	McGill University - MCGILL

Recurso libre

10.

A study of pyridinium betaines.
Frangatos, Gerassimos.

Formato:	Electronic Thesis or Dissertation
Enlaces:	The biological significance of certain pyridinium betaines, such as diphosphopyridine nucleotide and triphosphopyridine nucleotide, has been fully recognized. The vital importance of these substances in the life of organisms provided an impetus for extensive research in this field, with the…
Fecha:	1956
Recurso:	McGill University - MCGILL

Recurso libre

11.

Mass spectrometry of normal oxygen and oxygen subjected to electrical discharge.
Herron, John. T.

Formato:	Electronic Thesis or Dissertation
Enlaces:	Our knowledge of free radicals and atoms has increased rapidly during the past decade through the use of new techniques. Atoms and free radicals have been detected spectroscopically in the gas phase by vacuum ultraviolet absorption (1,2), and by emission…
Fecha:	1957
Recurso:	McGill University - MCGILL

Recurso libre

12.

The location of xanthate groups in starch xanthates.
Adamek, Edward. G.

Formato:	Electronic Thesis or Dissertation
Enlaces:	Starch xanthates were first prepared over 50 years ago, and since then little has been learned about their chemical structure; even suggestions for their industrial utilization have been very few. In the meantime, the emergence of the viscose process and…
Fecha:	1959
Recurso:	McGill University - MCGILL

Recurso libre

13.

Studies on the Protonation of Some Organic Compounds.
Campbell, Hugh J.

Formato:	Electronic Thesis or Dissertation
Enlaces:	For purposes of mechanistic study and structural assignment in organic chemistry it is often of great practical value to possess some knowledge concerning the basic strengths of various functional groups. The present work will concern itself primarily with a study…
Fecha:	1961.
Recurso:	McGill University - MCGILL

Recurso libre

14.

Nuclear reactions induced by protons on vanadium.
Hontzeas, Sotirios.

Formato:	Electronic Thesis or Dissertation
Enlaces:	Our present knowledge of nuclear structure attempts to explain nuclear properties on the basis of nucleons resonating as protons and neutrons with very strong, short-range forces acting between them. The nature of the forces between these elementary particles are not…
Fecha:	1962
Recurso:	McGill University - MCGILL

Recurso libre

15.

Determination of C-C bond dissociation energies in 1-butyne and 1,2-butadiene.
Schaffer, Robert.

Formato:	Electronic Thesis or Dissertation
Enlaces:	Bonds are broken and formed in all chemical reactions. A knowledge of the dissociation energies of the relevant bonds helps one to predict the ease by which a given reaction may take place. It is obvious, therefore, that such information…
Fecha:	1962
Recurso:	McGill University - MCGILL

Recurso libre

16.

The pyrolysis of phenylmercaptoacetic acid.
Tan, Ah-Ti. C-H.

Formato:	Electronic Thesis or Dissertation
Enlaces:	Chemical changes involve the breaking of bonds in the reacting molecules and the formation of bonds in the products; they are usually accompanied by energy changes. Although the stability of a molecule or a radical, as expressed in terms of…
Fecha:	1962
Recurso:	McGill University - MCGILL

Recurso libre

17.

Bond dissociation energies in organic compounds.
Tan, Ah Ti Chun-Hion.

Formato:	Electronic Thesis or Dissertation
Enlaces:	Chemical reactions involve ordinarily the breaking of bonds in the reacting molecules and the formation of bonds in the products; they are usually accompanied by changes in enthalpy. Although the stability of a molecule or a radical, as expressed in…
Fecha:	1966
Recurso:	McGill University - MCGILL

Recurso libre

18.

Reactions in dissociated water vapour
Jones, Robert Alexander

Formato:	Electronic Thesis or Dissertation
Enlaces:	It is now generally recognized that the processes involved in a chemical reaction are frequently not as simple as the stoichiometric equation would indicate, but consist rather of a series of elementary reactions of simple order; the over-all reaction observed…
Fecha:	1950
Recurso:	McGill University - MCGILL

Recurso libre

19.

Syntheses of vinyl aromatic compounds by pyrolyses over catalysts
Levi, Leo

Formato:	Electronic Thesis or Dissertation
Enlaces:	The potentialities of catalysis were foreseen by Ostwald when he prophesied that a scientific knowledge and control of catalytic phenomena would lead to immeasurable results technically (1). This prophecy has been fulfilled, for to-day the importance of catalysis in science…
Fecha:	1950
Recurso:	McGill University - MCGILL

Recurso libre

20.

The analysis of the typha latifolia linn. seed hairs.
Narasimhan, Ramanuja Iyengar.

Formato:	Electronic Thesis or Dissertation
Enlaces:	The seed hairs of the typha family (cat-tails) are easy to collect and appear to the eye to consist of cellulosic fibers of nearly uniform length radiating from a central stem. The object of the present Thesis was to review…
Fecha:	1948.
Recurso:	McGill University - MCGILL

Recurso libre

21.

The flow of gases and vapours through absorbing porous media.
Tomlinson, Richard Howden.

Formato:	Electronic Thesis or Dissertation
Enlaces:	Fluid flow has been measured through almost every type of porous material. A considerable portion of these permeability studies has been directed towards the flow of gases through a bed of charcoal grains. The interest in gas flow through charcoal…
Fecha:	1948.
Recurso:	McGill University - MCGILL

Recurso libre

22.

The oxidation of wheat starch with hypochlorous acid.
McKillican, Mary Elizabeth.

Formato:	Electronic Thesis or Dissertation
Enlaces:	Native starch has many industrial applications but its use is limited by certain technical difficulties. For example, in paper sizing it is almost impossible to apply the desired amount without making the drying process too slow, because ao much water…
Fecha:	1952
Recurso:	McGill University - MCGILL

Recurso libre

23.

Studies on Enzymatic Adaptation in Micro-Organisms.
Kushner, Donn J.

Formato:	Electronic Thesis or Dissertation
Enlaces:	During the past ten years, the importance of the phenomenon of enzymtic adaptation has beoome more and more apparent. Besides being in itself of considerable interest, it possesses implications for general cellular physiology extending outside of the area in which…
Fecha:	1952.
Recurso:	McGill University - MCGILL

Recurso libre

24.

The reactions of active nitrogen with ethyl, vinyl, propyl, and isopropyl chlorides.
Dunford, Hugh. B.

Formato:	Electronic Thesis or Dissertation
Enlaces:	One of the most outstanding developments in chemical kinetics has undoubtedly been the evolution of our present knowledge of atomic and tree radical reactions. The literature on this subject was comprehensively reviewed by Steacie in 1946 (1) and again in…
Fecha:	1954
Recurso:	McGill University - MCGILL

Recurso libre

25.

A general direct-current method for the measurement of electrolytic conductance, and its application to nitromethane solutions of quaternary ammonium halides.
Elias, Lorne.

Formato:	Electronic Thesis or Dissertation
Enlaces:	This work is intended to be an experimental contribution to the field of electrolytic conductance. Conductance work is a study of the behaviour of ions under an applied electric field. Since conductivity results can be readily obtained to a high…
Fecha:	1956
Recurso:	McGill University - MCGILL

Recurso libre

26.

Constituents of the oleoresin of the American male-fern (Dryopteris filix mas).
Thomas, Telfer. L.

Formato:	Electronic Thesis or Dissertation
Enlaces:	One of the best and oldest known tapeworm anthelmintics, a preparation from Dryopteris filix mas, commonly called the Male-fern, was known and used by the Greek physicians of ancient times (1). Their knowledge was lost in the Middle Ages except…
Fecha:	1957
Recurso:	McGill University - MCGILL

Recurso libre

27.

3-Hydroxyethyl glucose
Creamer, George Bernard

Formato:	Electronic Thesis or Dissertation
Enlaces:	In a Ph.D. Thesis submitted in 1946 from this Laboratory, Tasker prepared in pure form the series of the monoethyl ethers of the polyethylene glycols, R(OCH2CH2)n0H, where n was 1, 2 or 3. The tendency of several of these compounds…
Fecha:	1950
Recurso:	McGill University - MCGILL

Recurso libre

28.

The reaction of 2,3-dibromoindone with pyridine.
Redkevitch, Zenon.

Formato:	Electronic Thesis or Dissertation
Enlaces:	The aim of this work was to synthesize the 2,3-dibromo-inden-2-one-1 by the method of Roser; and to study the reaction of this compound with pyridine and with the three methyl-pyridines. Since it was known that the bromine atom in the…
Fecha:	1952
Recurso:	McGill University - MCGILL

Recurso libre

29.

The oxidation of hydroxybenzaldehydes with chlorine dioxide and sodium chlorite.
Logan, Charles Donald.

Formato:	Electronic Thesis or Dissertation
Enlaces:	[...]Realizing the great deficiency of knowledge in this field, the Wood Chemistry Committee of the Technical Section, Canadian Pulp and Paper Association, recommended a thorough investigation of the effects of halogen-containing oxidants on wood and its constituents. This research was…
Fecha:	1949
Recurso:	McGill University - MCGILL

Recurso libre

30.

The mesotron component in cosmic rays : a study of the absorption of mesotrons and an evaluation of the mesotron lifetime.
Josephson, Vernal.

Formato:	Electronic Thesis or Dissertation
Enlaces:	Knowledge of Cosmic Rays dates back to the early days of research in radioactivity. As in all fields of research the collection of accurate information about Cosmic Rays has been slow. This has been due, especially in the earlier period,…
Fecha:	1942
Recurso:	McGill University - MCGILL

Recurso libre

31.

War resesearch; the sorption of cyanogenchloride on charcoals.
Foran, Michael R.

Formato:	Electronic Thesis or Dissertation
Enlaces:	Dissertation was classified until 1966., [...] Empirical tests on Canadian and British service respirators have shawn cyanogen chloride to have a short service time on the types of moist charcoals formerly used to fill the canisters. As the testing methods…
Fecha:	1944.
Recurso:	McGill University - MCGILL

Recurso libre

32.

Flocculation of cellulose fibre suspensions.
Hubley, Charles Emerson.

Formato:	Electronic Thesis or Dissertation
Enlaces:	When a suspension of cellulose fibres in water is shaken or stirred with sufficient violence to produce a uniform dispersion and allowed to come to rest, it is observed that the dispersion tends to become less uniform in distribution of…
Fecha:	1949
Recurso:	McGill University - MCGILL

Recurso libre

33.

War research problems. A.) The chemistry of methyl-bis B-chlorethylamine and related compounds. B.) Various aspects of pro-knock activity.
Thompson, Allan L.

Formato:	Electronic Thesis or Dissertation
Enlaces:	Methyl-bis-β-chloroethylamine generally designated by “S” ha a been found to produce physiological effects of such a nature as to warrant the possibilities of its use as an agent for chemical warfare. However, stabilization of the compound has been found difficult.…
Fecha:	1943
Recurso:	McGill University - MCGILL

Recurso libre

34.

The synthesis and properties of glycosides related to lignin plant constituents. --.
Fisher, John Henry.

Formato:	Electronic Thesis or Dissertation
Enlaces:	The original print is faded. The output is the best quality possible at this time. , The object of this investigation was to obtain certain fundamental information on the question of a possible lignin-carbohydrate union in wood and the nature…
Fecha:	1941
Recurso:	McGill University - MCGILL

Recurso libre

35.

The dielectric constants of cellulose and of water sorbed thereon.
Brown, Douglas Frederick.

Formato:	Electronic Thesis or Dissertation
Enlaces:	It has been found that increase in bursting strength of paper is accompanied by a decrease in the dielectric constant of that paper. This is true whether the strength is increased by pressure on the wet sheet or by beater…
Fecha:	1940
Recurso:	McGill University - MCGILL