Showing papers on "Literature survey published in 1968"
TL;DR: The carbon dioxide compensation concentration of members of the Gramineae and a few other plants was determined with an infrared CO2 analyzer with results considered in relation to the greenhouse gas emissions of these plants.
Abstract: The carbon dioxide compensation concentration of members of the Gramineae and a few other plants was determined with an infrared CO2 analyzer. These results were then considered in relation to the new photosynthetic carboxylation pathway proposed by Hatch et al., rates of photosynthesis, grass systematics, leaf anatomy, and distribution of starch in the leaf. Plants possessing the new carboxylation pathway had low compensation values whereas those having the Calvin carboxylation reaction had high values. Low compensation plants also had a well-developed parenchyma bundle sheath containing a high concentration of chloroplasts which accumulated large amounts of starch. Little or no starch was present in the mesophyll cells. Cyperus was exceptional in that it also formed appreciable starch in the mesophyll. Those low compensation members of the Gramineae tested belonged either to the chloridoid–eragrostoid or the panicoid lines of evolution. A literature survey indicated that low compensation grasses have ph...
192 citations
TL;DR: The literature has revealed that several cases of this syndrome have been published as other disorders, chiefly Albers-Schonberg disease and cleidocranial dysostosis and still others will be considered under differential diagnosis.
Abstract: MAROTEAUX and Lamy, 1 in 1962, defined pycnodysostosis as a syndrome consisting of the following characteristics: (1) dwarfism; (2) osteopetrosis; (3) partial agenesis of the terminal digits of the hands and feet; (4) cranial anomalies, such as persistence of fontanelles and failure of closure of cranial sutures; (5) frontal and occipital bossing; and (6) hypoplasia of the angle of the mandible. The literature has revealed that several cases of this syndrome have been published as other disorders, chiefly Albers-Schonberg disease and cleidocranial dysostosis. Still others will be considered under differential diagnosis. The first reported case appears to be that of Montanari 2 in 1923. Collado-Otero, 3 in 1956, accurately described a case as "another form of osseous dystrophy," and credit should be given to this author as well as to Maroteaux and Lamy for their recognition of this disorder as a distinct entity. Our literature survey yielded a total of
70 citations
TL;DR: Research supports the view that group composition significantly determines group member behavior and that both homo geneity and complementarity hypotheses regarding the bases of compatibility and group effectiveness are tenable.
60 citations
TL;DR: In this paper, a detailed examination of wear scars obtained with certain disulfides using an electron probe microanalyser was performed, and the results illustrate the use of this new technique for studying the nature of worn surfaces but, even more important, lend strong sup...
Abstract: A detailed literature survey has shown that considerable controversy exists on the mode of action of organic sulfur compounds as load-carrying additives. Previous work by the authors, using four ball extreme-pressure and wear tests, has suggested that under mixed lubrication (antiwear) conditions, organic disulfides are adsorbed on to the metal surface with cleavage of the sulfur-sulfur bond to form an iron mercaptide layer. However, under more severe conditions such as exist in the extreme-pressure region, cleavage of the carbon-sulfur bond occurs to give an inorganic sulfur-containing layer. Thus the different relative performances of disulfides in the mixed lubrication and extreme-pressure regions are readily explained. This paper now presents the results of a detailed examination of the wear scars obtained with certain disulfides using an electron probe microanalyser. The results illustrate the use of this new technique for studying the nature of worn surfaces but, even more important, lend strong sup...
55 citations
TL;DR: Although there are divergent views on the likelihood that water is an important route in the transmission of viruses, there is general agreement that water could be important as a vehicle of disease transmission.
47 citations
TL;DR: In this paper, the authors describe planning as the process of developing a strategy for changing or responding to changes in one's environment; however, few responses can be made instantaneously; most require lead time.
Abstract: Planning may be described as the process of developing a strategy for changing or responding to changes in one's environment; however, few responses can be made instantaneously; most require lead time. For example, a firm must plan the size of its sales force, funds, plant capacity, etc., since they cannot be significantly changed overnight. Accurate forecasting is important because critical and irrevocable present actions depend upon such forecasts. Even where effective instantaneous response is possible, it is often more efficient to select the eventual response prior to the actual event.
39 citations
TL;DR: The chemistry of reactive dyes and wool keratin is described in this article, and the mechanisms of dyeing of wool and other protein fibres with reactive dye are discussed and compared.
Abstract: The chemistry of reactive dyes and wool keratin is described briefly. Published investigations of the mechanisms of dyeing of wool and other protein fibres with reactive dyes are discussed and compared.
39 citations
TL;DR: Two FDPases 1 have been partially purified and characterized from castor bean endosperm and a third from the leaf of the mature plant, one of which is AMP-sensitive, and exhibits competitive inhibition kinetics between AMP and FDP.
38 citations
01 Jan 1968
TL;DR: Differential equation describing nonlinear control systems, and literature survey on using Liapunov functions for problem solutions as discussed by the authors, see Section 2.2.1 for a survey.
Abstract: Differential equation describing nonlinear control systems, and literature survey on using Liapunov functions for problem solutions
27 citations
01 Dec 1968
TL;DR: In this article, an exponential depletion method for carbon electron ionization cross-sections was proposed, and the method described how different processes can be separated is contained in the method describing how different cross sections can be deduced.
Abstract: : A literature survey reveals that no measurements of carbon electron ionization cross sections appear to have been made. The problem is complicated because of the large variety of possible reactions. The method describing how different processes can be separated is contained herein. The results show that some of the simpler cross sections can be deduced. Electron beam profiles, secondary electrons, and ion energy effect on the mass spectrometer were investigated in order to reduce uncertainties. A new cross section measuring technique, the Exponential Depletion Method, was developed, and is described herein. Apparatus for the existing MCB method was modified to accommodate the Exponential Depletion theory.
24 citations
01 Nov 1968
TL;DR: In this paper, the effect of shock wave-boundary layer interaction on aerodynamic heat transfer coefficients was investigated and a literature survey and empirical expressions for predicting peak heat-transfer coefficients in interaction regions, developed with the use of existing experimental data, were presented.
Abstract: : An investigation of the effect of shock wave-boundary layer interaction on aerodynamic heat-transfer coefficients is reported. A literature survey and empirical expressions for predicting peak heat-transfer coefficients in interaction regions, developed with the use of existing experimental data, are presented.
01 Aug 1968
TL;DR: In this article, the bibliography covers Populus sp. with emphasis on P. tremuloides and references have been grouped under broad subject matter headings to facilitate use and arranged alphabetically by author within each group.
Abstract: : The bibliography covers Populus sp. with emphasis on P. tremuloides. References have been grouped under broad subject matter headings to facilitate use and are arranged alphabetically by author within each group. (Author)
01 Jan 1968
TL;DR: A detailed literature survey and a new observational study were performed to determine and extend the knowledge of spectral reflectivity differences on the lunar surface in the extended visible wavelength region in this paper.
Abstract: Both a detailed literature survey and a new
observational study were performed to determine and
extend the knowledge of spectral reflectivity differences
(color differences) on the lunar surface in the extended
visible wavelength region. A survey of the extensive
and disorganized literature revealed few positively
known facts and indicated the need for an accurate, multi-passband observational study of a number of lunar areas
of differing morphology. A 21-filter (0.4µ- 0.8µ),
double beam photoelectric photometer was designed and
constructed to observe differentially 83 lunar areas,
some many times, to an accuracy of 0.1% to 0.3%. Some
results were the discovery of: (1) many color variations
up to 10% with some to about 60%, (2) a dependence of
relative color on phase angle but no temporally varying
luminescence, (3) broadband absorption features on
spectral reflectivity curves and possibly some less broad,
low amplitude (0.2%- 0.5%) humps, (4) a dependence of
spectral curve shape on lunar morphology and, (5) no
universal dependence of color on brightness, although
some mare areas show this tendency. These results indicate
that color differences are caused mainly by compositional differences and that the shapes of the spectral reflectivity curves give some indications of the rock and mineral composition of the lunar surface.
TL;DR: It appears likely that the trend will continue, because of the increased use of subject specialists on library staffs, the growth of the publication industry, the articulation of more selection policy statements, and increasingly widespread recognition of selection as part of the librarian's professional responsibility.
Abstract: A survey of the literature of book selection in academic libraries indicates that there has been for more than a half-century a continuing shift from faculty-dominated selection to library-dominated selection. It appears likely that the trend will continue, because of the increased use of subject specialists on library staffs, the growth of the publication industry, the articulation of more selection policy statements, as well as increasingly widespread recognition of selection as part of the librarian's professional responsibility.
TL;DR: In this article, an intensive literature survey has been conducted to review existing techniques for measuring the effectiveness of RF shielding enclosures, and the theoretical considerations underlying each of the methods listed, as applicable to the measurement of shielding effectiveness.
Abstract: An intensive literature survey has been conducted to review existing techniques for measuring the effectiveness of RF shielding enclosures. Prevalent methods of measuring E- and H-field components and for sensing the total field are discussed and evaluated. The procedures described in the literature are tabulated into groups determined by their similarities in method or theory and are compared by listing the advantages and disadvantages inherent in each. (A weighting system is devised to aid in evaluating each of the principal methods discussed.) Also discussed are the theoretical considerations underlying each of the methods listed, as applicable to the measurement of shielding effectiveness. Among these are the concepts of the resultant wave impedance of the E-M field at a point inside a shielded enclosure and the relationship of low-impedance and high-impedance fields in the near field regions of antenna systems. Techniques for extending the frequency and intensity of illuminating fields are also discussed, as well as the insertion loss method of determining leakage from a shield. Limitations and deficiencies of this latter procedure are noted.
01 May 1968
TL;DR: In this paper, the potential applicability of a combined fracture mechanics-non-destructive inspection procedure as a design approach for aircraft structures was investigated, where fracture mechanics, when combined with flaw size as determined by NDT, can accurately predict the failure load of selected structures.
Abstract: : This report describes the work conducted on a program designed to investigate the potential applicability of a combined fracture mechanics- nondestructive inspection procedure as a design approach for aircraft structures. The program consisted of three phases, conducted simultaneously: (1) a literature survey to determine if sufficient fracture toughness information exists to determine a statistically valid value of K1c; (2) a test program to determine the minimum size of a crack that can be detected by each of four NDT methods: X-ray, magnetic-particle, penetrant, and ultransonics; and (3) a test program to determine if fracture mechanics, when combined with flaw size as determined by NDT, can accurately predict the failure load of selected structures.
01 Jan 1968
15 Sep 1968
TL;DR: In this article, the preparation and calcination of ammonium uranates is reviewed, and the effects of preparation conditions upon the composition, structure, morphology, surface area, and filtration are discussed.
Abstract: The preparation and calcination of ammonium uranates is reviewed. Topics covered include the preparation of ammonium uranates by precipitation or solid state reaction; the effects of preparation conditions upon the composition, structure, morphology, surface area, and filtration of ammonium uranates; the thermal decomposition and reduction of ammonium uranates; and the effect of calcination conditions on the physical properties of the resultant powder.
Journal Article•
TL;DR: A comparison of Oxidative Processes Involving Oxalate and Malonate in the Photosynthetic Bacterium Rhodospirillum rubrum with the results of a comparison of Photosynthesis Products in Different Plants with the Use of Carbon-14.
Abstract: 1. Carbon metabolism: carbohydrates, organic acids and carbon diuxidejixation L. Anderson and R. C. Fuller, The Rapid Appearance of Glycolate during Photosynthesis in Rhodospirillum rubrum. Biochim. et Biophys. Acta 131, 198 (1967). A. L. Baker and N. E. Tolbert, Purification and Some Properties of an Alternate Form of Glycolate Oxidase. Biochim. et Biophys. Acta 131, 179 (1967). C. W. Baldry, D. A. Walker and C. Bucke, Calvin Cycle Intermediates in Relation to Induction Phenomena in Photosynthetic Carbon Dioxide Fixation by Isolated Chloroplasts. Biochem. J . 101,642 (1966). S. S. Baslavskaya and L. S. Bamburova, Assimilative Activity and Composition of Scenedesmus quadricauda Cells of Various Ages. Vestnik Moskov. Univ., Ser. VI, 2 I , 27 (1966). K. Brooks and R. S. Criddle, Enzymes of the Carbon Cycle of Photosynthesis. I. Isolation and Properties of Spinach Chloroplast Aldolase. Arch. Biochem. Biophys. 117,650 ( I 967). C. Bucke, D. A. Walker and C. W. Baldry, Effects of Sugars and Sugar Phosphates on Carbon Dioxide Fixation by Isolated Chloroplasts. Biochem. J . 101,636 (1966). 0. T. Khachidze, P. A. Tkhelidze and N . V. Pkhakadze, Distribution of Carbon-14, Absorbed during Photosynthesis, in Carbohydrate, Organic Acid, and Amino Acid Fractions of Grape Leaves. SoobshchenigaAkad. NaukGruzin.S.S.R.44,317(1966). B. H. Levendahl, Heterotrophic CO, Fixation by a Bleached Euglena. Exptl. Cell Research 44,393 ( 1 966). E. S. Mikhailova, R. M. Bekina, M. G. Shaposhnikova, I. M. Mosolova and N. M. Sisakyan, Oxidative Transformations of Organic Acids in Illuminated Chloroplasts. I. A comparison of Oxidative Processes Involving Oxalate and Malonate. Soviet Plant Physiol., English Transl. 13,373 ( 1 966). A. T. Mokronosov and G. F. Nekrasova, Metabolic Aspects of the Transition States of Photosynthesis in the Induction Period. Soviet Plant Physiol., English Transl. 13,343 (1966). C. Ning and H. Gest, Regulation of L-lso-Leucine Biosynthesis in the Photosynthetic Bacterium Rhodospirillum rubrum. Proc. Natl . Acad. Sci. US. 56, 1828 (1966). G. M. Orth, N. E. Tolbert and E. Jimenez, Rate of Glycolate Formation during Photosynthesis at High pH. Plant Physiol.41, 143 (1966). C. Passera, F. Fullin and G. Ferrari, Correlations between Amino Acid Synthesis and the Krebs Cycle in Chlorella vulgaris. Ann. chim. (Rome) 56, 1545 (1966). J. M. Paulsen and M. D. Lane, Spinach Ribulose Diphosphate Carboxylase. 1. Purification and Properties of the Enzyme. Biochemistry 5,2350 (1966). V. V. Rachinsky and A. V. Dencheva, Examination of Photosynthesis Products in Different Plants with the Use of Carbon-14. Izvest. Timiryazev. Sel'skokhoz. Akad. 12, (1966). G . K. Russell and M. Gibbs, Partial Purification and Characterization of Two Fructose Diphosphate Aldolases from Chlamydomonas mundana. Biochim. et Eiopliys. Acta 132, 145 (1967). N. E. Tolbert and J. L. Hess, Effect of Hydroxymethane Sulfonates on Carbon-I4 Dioxide Photosynthesis by Algae. J. Biol. Chem. 241,57 12 (1966). K. Uchida and G. Kikuchi, Phosphoenolpyruvate Carboxykinase from Rhodopseudomonas spheroides and Its Possible Role in Light-Stimulation of Glucogenesis. J. Biochem. (Tokyo) 60,729 (1966). R. A. Uphaus and J. J. Katz, Deuterium Isotope Effect on Carbon Isotope Fractionation in Photosynthesis. Science 155,324 ( 1966). B. A. Whitton, Extracellular Products of Blue-Green Algae. J . Gen. Microbiol. 40, I (I 965). T. Yamaguchi, T. lkawa and K. Nisizawa, Incorporation of Radioactive Carbon from H'TO, into Sugar Constituents by a Brown Alga, Eisenia bicyclis, during Photosynthesis and Its Fate in the Dark. Plant Cell Physiol. 7 , 2 17 ( I 966).
01 Jun 1968
TL;DR: Literature survey of astrodynamics problems on intercept, transfer, and rendezvous trajectories can be found in this paper, where the authors present a survey of the literature on these problems.
Abstract: Literature survey of astrodynamics problems on intercept, transfer, and rendezvous trajectories
TL;DR: A literature survey of photosynthesis in Rhodospirillum rubrum and some Physical Properties of Purified Fraction I Protein from Spinach Chloroplasts from 1967, compiled by staff members of the Charles F. Kettering Research Laboratory.
Abstract: CURRENT LITERATURE SURVEY OF PHOTOSYNTHESISXI11 Ed. by LEO P. VERNON and J. R. BOTTOMS and compiled by staff members of the Charles F. Kettering Research Laboratory, I50 East South College St., Yellow Springs, Ohio (Received 25 October 1967) BIOCHEMICAL 1. Carbon metabolism: carbohydrates, organic acids and carbon dioxide fixation M. Abramhamsen and A. N. Mayer, Photosynthetic and Dark Fixation of Carbon-I4 Dioxide in Detached M. J. Allison and I. M. Robinson. Biosynthesis of Phenylalanine from Phenylacetate by Chromatiurn and L. Anderson and R. C. Fuller, Photosynthesis in Rhodospirillum rubrum. 1. Autotrophic Carbon Dioxide L. Anderson and R. C. Fuller, Photosynthesis in Rhodospirillum rubrum. 11. Photoheterotrophic Carbon L. Anderson and R. C. Fuller, Photosynthesis in Rhodospirillum rubrum. 111. Metabolic Control of ReN. J. Antia and V. Chorney, Nature of the Aldolase Activity in a Unicellular Red Alga. Nature 214, 1028 R. Bianchetti and M. L. Sartirana, AMP-Sensitive Fructose Diphosphatase in Higher Plants: Effects of C. Bucke, C. W. Baldry and D. A. Walker, Photosynthetic Carbon Dioxide Fixation by Isolated Chloroplasts 1. A. Chernov, N . S. Siyanova and D. Z. Shakirova, Fixation of Carbon Dioxide by Isolated Chloroplasts N. G, Doman, E. N. Kondrativa and J. Simisker, Alternative Ways of Acetate Photoassimilation by ChloroE. E. Duystee and R. R. Schmidt, Total Starch and Amylose Levels during Synchronous Growth of ChloF. Fiedler, G. Miillhofer, A. Trebst and I. A. Rose, Mechanism of Ribulose-Diphosphate Carboxydismutase R. Fluri, T. Ramasarma and B. L. Horecker, Purification and Properties of Fructose Diphosphate Aldolase M. D. Hatch and C. R. Slack, The Participation of Phosphoenolypyruvate Synthetase in Photosynthetic M. D. Hatch, C. R. Slack and H. S. Johnson, Further Studies on a New Pathway of Photosynthetic Carbon C. H. Hatz and F. Leuthardt, Aldolase Activity in Chloroplasts of Spinaciu oleracea. Hoppe-Zeyler’s Z . J. L. Hess, N. E. Tolbert and L. M. Pike, Glycolate Biosynthesis by Scenedesmus and Chlorellr in the J. L. Hess and N . E. Tolbert, Glycolate Pathway in Algae. Plant Physiol. 42,371 (1967). T. Nomura. N. Nakayama, T. Murata and T. Akazawa, Biosynthesis of Starch in Chloroplasts. Plant Physiol. 42, 327 ( 1967). C. B. Osmond, p-Carbaxylation during Photosynthesis in Atriplex. Biochem. er Eiophys. Acra 141, 197 ( 1967). N . G. Pon. Some Physical Properties of Purified Fraction I Protein from Spinach Chloroplasts. Arch. Biorhem. Eiophys. 119, 179 (1967). J. Preiss and E. Greenberg, Biosynthesis of Starch in Chlorella pyrenoidosu. 1. Purification and Properties of the Adenosine Diphosphoglucose: a-4-Glycosyl Transferase from Chlorella. Arch. Eiochem. Eiophys. 118,702 (1967). C. Rassera. G. Ferrari and F. Gori, Synthesis of Alanine, Serine and Glycine in Chlorella vulgaris. Agrochimicu 10.25 I ( 1 966). Soybean Cotyledons. Physiol. Planrarum 20, 1 ( 1967). Rhodospirillum rubrum. J . Eucferiol. 93, 1269 ( 1967). Fixation. Plant Physiol. 42,487 (1967). Dioxide Fixation. Plant Physiol. 42,49 I ( I 967). ductive Pentose Phosphate and Tricarboxylic Acid Cycle Enzymes. Plant Physiol. 42,497 ( I 967). ( 1967). Carbon Sources on the Level of the Enzyme. Eiochern. Eiophys. Res. Commun. 27,387 (1967). in Good’s Buffers. Phyrochemistry 6,495 ( I 967). and the Effect ofTemperature on Its Rate. Fiziol. Ras f . 14, 172 (1967). seudonionas ethylicum. Dokl. Akad. Nauk SSSR 172,969 ( I 967). relln pyrenoidosa. Arch. Eiochem. Eiophys. 119,382 (1967). Reaction. European J. Eiochem. 1,395 ( I 967). From Spinach Leaves.EuropeanJ. Eiochem. 1, 1 17 (1967). CO’ Fixation of Tropical Grasses. Arch. Biochern. Eiophys. 120,224 (1967). Dioxide Fixation in Sugar-Cane and Its Occurrence in Other Plant Species. Eiochem. J . 102,417 (1967). Physiol. Chem. 348,354 (1967). Presence or Absence of NAHCO,. Plunra 74,278 ( I 967).
Book•
01 Mar 1968
TL;DR: A review of the literature concerned with theory, laboratory studies, and field experience with regard to the submarine pipeline problem is provided in this paper, where some extreme environmental factors acting on submarine pipelines are discussed.
Abstract: This paper discusses some extreme environmental factors acting on submarine pipelines. A brief discussion of the theoretical considerations for such factors as scour and hydrodyanmic forces or forces experienced during the laying operation on both buried and unburied pipelines is presented. Also, a review of the literature concerned with theory, laboratory studies, and field experience with regard to the submarine pipeline problem is provided. Certain aspects of design, including route selection, laying methods, pipeline burial, and pipe risers, are examined. Translations of foreign literature, abstracts, and an annotated bibliography of selected sources pertaining to theoretical and experimental studies and steps being taken to minimize failures and installation costs are compiled for readily available reference. This literature survey includes a comprehensive list of recommendations for further research as prepared in a report by the Committee on Research, Pipeline Division of the American Society of Civil Engineers.
01 Feb 1968
TL;DR: Literature survey and testing program were initiated to obtain pertinent information for Hastelloy X, a nickel-base alloy, through the temperature range of minus 423 degrees to 1800 degrees F as mentioned in this paper.
Abstract: Literature survey and testing program were initiated to obtain pertinent information for Hastelloy X, a nickel-base alloy, through the temperature range of minus 423 degrees to 1800 degrees F. A report has been prepared which includes the tensile properties, mechanical properties, and the manufacturing and fabrication processes.
01 Feb 1968
TL;DR: In this paper, a literature survey was conducted to summarize the known effects of solid solution additions on the fracture toughness of high-strength steels and the results indicated that nickel is the singular alloy addition that consistently improves toughness while manganese has a detrimental effect.
Abstract: : A literature survey was conducted to summarize the known effects of solid solution additions on the fracture toughness of high-strength steels. The results indicate that nickel is the singular alloy addition that consistently improves toughness while manganese has a detrimental effect. In the range of compositions usually employed, variations in the percentage of carbide formers produces no well defined change in fracture toughness. Silicon has a marked effect on retarding the tempering reactions and some results indicate that when it is added to vacuum melted 4340 a significant increase in toughness can result. At present the use of secondary hardening mechanisms in the low alloy martensitic steels has not produced any significant improvement in toughness. (Author)
01 Jan 1968
TL;DR: In this article, the authors discuss the progress of selecting the right painting for out-of-doors exposure and predicting performance of a painting under the influence of external factors such as weather, light, glare, and exposure.
Abstract: THE PROGLEM OF SELECTING THE RIGHT COATING FOR OUTDOOR EXPOSURE AND PREDICTION OF PERFORMANCE IS DESCRIBED. THE LITERATURE SURVEY IS DIVIDED INTO SEVERAL SUBSECTIONS ACCORDING TO TEST: WEATHEROMETER, INFLUENCE OF LIGHT, OXIDATION, WATER, ETC. THE TEST MOST WIDELY USED TO EVALUATE THE PERFORMANCE OF COATINGS IS THE OUTDOOR WEATHERING TEST. MEANS OF PERFORMING THIS TEST ARE DESCRIBED AND THE VARIABLES DETAILED. IF ACCELERATED WEATHERING IS DESIRED EITHER THE SUNSHINE OR XENON ARC WEATHEROMETERS ARE RECOMMENDED. PROCEDURES FOR CONDUCTING THESE TESTS ARE DESCRIBED. STRESS-STRAIN MEASUREMENTS ARE DISCUSSED AS AN AID IN PREDICTING THE ABILITY OF PAINT FILMS TO PERFORM UNDER THE ADVERSE INFLUENCE OF DEGRADING FACTORS.
TL;DR: In this article, the authors report a study of the copolymerization of acrylonitrile with a series of allylic amines in various media, and an a t tempt to relate the reactivity ratios of these monomers to their structure.
Abstract: VERY little information is available on the relative reactivities of unsaturated amines in copolymerization with vinyl monomers, especially aerylonitrile. For example Young's long literature survey [1] gives examples of copolymerization with 4-vinylpyridine and with 2-methyl-5-vinylpyridine. The copolymerization of acrylonitrile with p-aminostyrene has been studied in detail [2]. With regard to the copolymerization of allylic amines with vinyl monomers, including acrylonitrile, there are only some patent examples [3-5]. These are not the result of systematic studies and reactivity ratios are not given. In this paper we report a study of the copolymerization of acrylonitrile with a series of allylic amines in various media, and an a t tempt to relate the reactivity ratios of these monomers to their structure.
01 Jul 1968
TL;DR: In this article, one hundred and thirty three references to published work pertaining to transparent armor for use in the vision ports of Army ground vehicles or in aircraft enclosures are listed under ten categories, as follows: state of the art; glass; plastic; glassplastic; single crystal ceramics; dynamic properties of polymers; fiber optics; vision blocks; military specifications, handbooks; and drawings; bibliographies.
Abstract: : One hundred and thirty three references to published work pertaining to transparent armor for use in the vision ports of Army ground vehicles or in aircraft enclosures are listed under ten categories, as follows: state of the art; glass; plastic; glass-plastic; single crystal ceramics; dynamic properties of polymers; fiber optics; vision blocks; military specifications, handbooks; and drawings; bibliographies.
11 Oct 1968
TL;DR: In this article, a literature survey of the structural factors affecting direct and sensitized visible chemiluminescence in solution is presented, including the effect of structure on the quantum efficiency and spectral distribution of fluorescence.
Abstract: : This report represents a literature survey of the structural factors affecting direct and sensitized visible chemiluminescence in solution. Compilations of the quantitative and qualitative data for the important classes of direct chemiluminescent reaction are given. These classes include: luminol, lophine, lucigenin - their analogs and derivatives. Other parameters affecting the efficiency and lifetimes of chemiluminescent reactions covered in this report include: fluorescer concentration, solvent, catalyst and oxidizer. The effect of structure on the quantum efficiency and spectral distribution of fluorescence is a subject which can be studied independently of the chemiluminescence phenomena. The report gives some quantitative and qualitative data concerning these structural effects. (Author)