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cultivars; image analysis; classification; hard white wheat; hard red spring wheat; near-infrared spectroscopy; color; winter wheat
Abstract:
... Color class of wheat is an important attribute for the identification of cultivars and the marketing of wheat, but is not always easy to measure in the visible spectral range because of variation in vitreosity and surface structure of the kernels. This work examines whether short-wavelength near infrared (SW-NIR) imaging in the range 632 - 1098 nm can be used to distinguish different cultivars. Th ...
... The effects of weathering on the surface properties of wood-plastic composites (WPC) were examined. High-density polyethylene (HDPE) based WPCs made from modified wood flour (untreated, extractives free, and holocellulose (delignified) fibers) were subjected to accelerated (xenon-arc) weathering. Colorimetery and Fourier-transform infrared spectroscopy were employed to monitor the color change and ...
... The main points that have been brought out in this paper are as follows:— (i) Two varieties (and intermediates) of M. rattus are found in Egypt. (ii) The hind foot is taken as a standard measurement and curves of this measurement drawn. (iii) These curves show three apices, the first being very small. (iv) These three apices correspond with the length of the hind foot typical of the three subgroup ...
... The average amount of self-pollination obtained under these conditions was 5.13 percent, but this figure may not represent the percentage of self-pollination taking place under all field conditions, since humidity and wind are factors which determine the zone of infection between hills. To obtain significant figures the experiment should be repeated for several years. Better examples of the effect ...
... The presence of sodium nitrate in the soil at the early stages of growth stimulated the vegetative growth of the crops and consequently gave greater yields. The presence of sodium nitrate in the soil at the time of heading gave a better quality of grain with reference to color and protein content. The vegetative growth was, however, not in the least affected. The presence of sodium nitrate in the ...
... The quantity of Marquis wheat produced in the Pacific Northwest and Montana during the crop year of 1916 was much larger than usual. This was due to an increased acreage of this variety in certain sections of the Inland Empire, and to the reseeding of the winter wheat fields which had been frozen out early in the season in sections of Montana. Marquis wheat grown at Pullman, Wash., was higher in p ...
... Two types of growth habit in soybeans are described, one a tall, luxuriant growing, late maturing type (Type I); the other, a low, compact, early maturing type (Type II). Genetically these two types behave as allelomorphic characters, Type I being dominant. The genetic difference between them appears to be determined by a single factor pair S, s. Dark-colored and light-colored pods constitute an a ...
... In the present investigation to determine the extent of natural crossing in oats at Akron (Colo.) Field Station, it was found that: Without doubt natural crosses do occur in oats; the extent of such crossing varied with the different varieties; the amount of natural crossing was greater in some selections than in others from the same variety. It would appear that in oats natural crossing may accou ...
Medicago sativa; weeds; seed germination; color; heat treatment; weed control
Abstract:
... In this treatise attention is called to the general knowledge that discolored alfalfa seed is inferior to bright-colored seed. There was, however, no previous accurate information as to the degree to which discolored seeds of various sorts lowered the agricultural value of alfalfa seed. Alfalfa seed was graded into seven color separates and the powers of each to germinate on blotters and to establ ...
... Results are presented which indicate a linkage of the Pr factor with the R factor in linkage group II. A brief discussion is given of studies of inheritance of yellow endosperm color and two different types besides the usual yellow color are discussed. One of these is somewhat darker than pale yellow and the other is a very pale yellow endosperm. The results given indicate that the factors which c ...
... The characters of the Bipinnaria asterigera of Nortliumberland waters are:‐Colour transparent. Shape: long anterior lobe dividing into anterior and posterior median ocesses (the former pointed, the latter expanded distally and slightly bifide); the processes are long, and the anterior dorsal process consists of three branches. Size (two forms, a low and a high): preserved they measure ca. 2.8 mm. ...
corn; anatomy and morphology; genetics; color; pigmentation; biochemistry
Abstract:
... A brown midrib character, due to a factor pair designated Bmbm, was inherited as a simple Mendelian recessive. This color was located in the lignified tissue of the entire plant. its formation started after lignified tissue was formed, and while cell organization was complete. It was not contained in the cytoplasm of the cell and was either a compound of lignin or was laid down in the interstices ...
sugar beet; crop yield; seedlings; color; pigmentation; field experimentation; varieties
Abstract:
... All sugar beets carry some color pigment of either red or yellow color. This color is most distinct in the hypocotyl of the small plants during the first four weeks of growth. It is also readily discernible in the small leaf buds of the mature plants. The color of the young hypocotyl and the mature leaf buds is the same, therefore selection for this character may be made during any stage of growth ...
... There were three spike-density groups in the F3 progenies as follows: Homozygous dense, heterozygous, and homozygous lax. Explained on a one-factor basis, P = .9. Homozygous and heterozygous groups were readily separated by use of the coefficient of variability which was more than 3 to 10 times as great in the heterozygous progenies as in the homozygous. The spikes of homozygous dense progenies we ...
... 1 The object of the experiments recorded was to discover how much of the decrease in dissolved oxygen in water surrounding a specimen of Lepi‐dosiren is due to the absorption by mucus etc. of iodine liberated by the Winkler reaction, and how much to the absorption of dissolved oxygen from the water either by the mucus or by the fish itself. 2 It was found that the excreted mucus did not absorb oxy ...
... Four sets of crosses, viz., rust-colored lint X white, dingy brown-colored lint X white, yellowish brown-colored lint X white, and green-colored lint X white, were made and the progenies studied. The lint color of the F1 generation of each cross was an intergrade between that of the respective colored parent and the white parent. Thus, each of the four shades of lint color are incompletely dominan ...
... A second brown midrib character in maize is described. The brown midrib gene (bm2) is located in the P-br group, the probable order of the factors tested being P-br-f-an-gs-bm2. The location of bm2 in this chromosome at a point remote from P and f greatly extends the map of the group. ...
... 1. In a study of methods, it was found that the area of corn leaf blades could be determined as accurately by the formula length X greatest width X 0.75, as by planimeter readings of blue-printed leaf outlines. Leaf areas may conveniently be determined from growing plants by this method without injury. 2. Both chlorophyll and carotin were most concentrated in the uppermost leaves and least in the ...
... 1. A list of genes and a chromosome map are given to show the progress made to date in a genetic analysis of the soybean. 2. The mode of inheritance of three characters is described. Bloom on the seed coat is considered to be due to three complementary genes B1, B2, and B3, all three of which must be present to produce the character. Variegated leaf (v1) is a simple recessive to normal (V1), and d ...
... Information on the origin, introduction, nomenclature, and probable agronomic value of certain new varieties of oats resistant to or nearly immune from crown rust is reported. Bond (C.I. No. 2733), a new hybrid variety from Australia, is outstanding from the standpoint of resistance to crown rust in combination with desirable agronomic characters. Kareela (C.I. No. 2774) was originated in Australi ...
... Burt oats are widely adapted and extensively grown, especially in the more southern part of the United States. This variety has long been recognized as rather variable in many of its characteristics. Due largely to its reddish color, it has not proved as popular as white or yellow sorts where these are adapted. Burt oats have been grown at the Nebraska Agricultural Experiment Station since 1905 an ...
... The oat varieties Black Mesdag and Gopher, as well as certain descendent lines from hybrids between them, gave similar smut reactions to both U. levis and U. avenae. Dehulling the seed before treatment with smut spores very materially increased infection and also increased mortality among the resultant seedlings and plants. Eighty second generation descendent families from the backcross 17-10-75-5 ...
... Data are presented which indicate that the A2a2 factor pair is located in the Pr - V2 linkage group, with a crossover percentage between bt and a2 of 7.2. The order of the genes studied is pr-bt-a2. There appeared to be selective action in favor of pollen carrying A2 over that carrying a2. ...
... 1. The present paper is supplementary to an earlier publication (3), the purpose of which was to present a detailed investigation of the food‐habits of certain tree‐frogs–as indicated by the examination of food eaten under natural conditions–“(1) in order to test the efficiency of procryptic and warning colours and mimicry in defending insects from predatory attack; and (2) to indicate the part pl ...
... A pale mutant row of beans was found in a selection of white-seeded Robust X Pink. The pale plants have lighter colored leaves than normal. The pale plants yield about one-fourth as much as the normal green Robust variety; however, there is no mortality in germination. The F1, plants from pale X Robust and reciprocal are green. The F2 plants segregate 3 green: 1 pale. The pales were generally fewe ...
... 1. Tests were made with 24 inbred lines and 23 single crosses of maize to determine the relative amount of growth with various limitations of phosphorus and nitrogen. These tests were conducted with plants growing in soil, sand and soil, river sand, quartz sand, and water cultures, and growth measured in terms of dry weight of the plant produced at 6 weeks of age with one test based on ear weights ...
... Following a preliminary test in 1932, a trial was made in 1933 of the relative yielding capacity of corn of four different anthocyanin plant colors, namely, dilute sun red, which characterizes most of the present varieties of economic importance, sun red, dilute purple, and purple. The stocks were bred so that all four color classes occurred with approximately equal numbers in each of the 11 famil ...
... Data are presented on anther color in cotton which seem to verify the hypothesis that there are two basic genes, P and B, for yellow and white anthers, with an additional gene, I, which when present inhibits either P or B when either is alone. The interrelations of these three genes are shown by the several ratios of yellow to white, namely, 42 : 22, 3 : 1, 9 : 7, 13 : 3, 15 : 1, 1 : 3, and 3 ; 13 ...
... Many spectrophotometers utilize polarizing prisms and determine the reflection factor of the sample by plane polarized light. In general, the reflection factor of the sample is independent of the azimuth of the plane of polarization but there are some materials, notably textiles, for which the reflection factor depends upon the azimuth. It can be shown mathematically that, if the reflection factor ...
... 1 The digging movements of the freshly emerged flies have been described and analysed. Direction of digging is determined by light, but not by gravity. 2 The process of the inflation of the fly with air and the expansion of the wings has been described and analysed. During digging these reactions are inhibited and postponed. Air‐pumping occurs apparently independently from external and internal st ...
... The coral reefs off Ghardaqa are pictured and their conditions described in regard to growth and to decay. Attached corals living on the more seaward reefs are frequently broken off by strong waves. The effect of such on Acropora, Lobophyllia, and Porites is examined, and it is estimated that 60 per cent, of the broken‐off corals were weakened by boring‐sponges, 20 per cent, by boring molluscs, de ...
... The purpose of this study was to determine the mode of inheritance of petal color, seed color, cilia on the false septa of the bolls, and seed size. White petal color behaved as a simple Mendelian recessive to blue, although a deficiency occurred in the recessive class which was too great to be attributed to chance. It was calculated that 33.8%, of the possible white-flowered segregates failed to ...
... Yellow endosperm coloration is dependent upon the interaction of the dominant allelomorphs of y1 and y3. Genetic tests indicate that Y3 is closely linked with al, a chlorophyll deficiency type. By means of trisomic tests both al and y3 are shown to belong in the second linkage group. The order of the genes is not indicated, but both al and y3 are near lg1. ...
... Winter wheat seedlings, some grown in the field and some in a greenhouse and mostly in the five- to eight-leaf stage of development, gave highly significant hardiness differences within the same varieties when different sources of seed were compared. Several specific variates, such as seed size, weathering, and protein content, were tested to establish their relationships to differences in hardine ...
height; plant characteristics; Sorghum bicolor; variety trials; Ostrinia nubilalis; Diatraea; plant pests; pest resistance; strains; color; stems; grains; China
Abstract:
... 1. Grain sorghum is attacked by several species of stem borers, such as Pyrausta nubilalis, Diatraea, etc. 2. Data were obtained from the study of infestation in 1,073 strains and varieties in 1933, indicating that the extent of infestation by stem borers varied with varieties, 3. Further data obtained in 1934 under both field and controlled conditions gave further indication of differences in var ...
Phleum pratense; open pollination; selection criteria; stems; length; early development; color; leaves; strains; seeds; vegetative propagation; Ohio
Abstract:
... The high variability in commercial timothy has made possible by continuous selection through several generations the development of strains having longer stems, earlier or later maturity, and better retention of green color in the leaves than the plants from which they were derived. The plants of many of these new strains show a high degree of uniformity, even though grown under natural conditions ...
... 1 A series of experiments on the feeding reactions of the common toad are described and discussed. These experiments represent an attempt (1) to furnish reliable experimental proof of the effectiveness of the protective adaptations of hive‐bees in relation to predatory attack by toads; and (2) to throw some light on the feeding reactions, powers of association, and memory in the toad (Bufo bufo bu ...
... Data have been presented showing the behavior of striping as found in plants resulting from a cross between Ruakura and a strain of Avena sterilis macrocarpa. The occurrence of 17 striped plants out of a total Of 386 plants in the second generation suggested an approach to a 15 : 1 ratio. Later results obtained from the F3 generation proved that this was not the case. Further results obtained from ...
Phleum pratense; hay; strains; selection criteria; leaves; color; duration; protein content; plant breeding; early development; harvest date; cultivars; Ohio
Abstract:
... In 1935 a study was made of the growing habits of the leaves on the plants of three strains of timothy and of the relation of their condition to the quality of the hay. These strains included ordinary timothy which blooms and matures at a medium date, an early strain, and a late strain, each of the selections representing three generations of selections for earliness or lateness and for the tenden ...
... Data regarding the menstrual cycle of various Primates are summarized in Table II. In animals which undergo a sexual‐skin cycle the phase of swelling (folli‐cular phase) is generally longer and more variable than the phase of quiescence (luteal phase). This finding is related to the well‐established view that the luteal phase in the human menstrual cycle is generally less variable than the pre‐ovu ...
... Studies on the inheritance of certain kernel characters and linkage relations in a cross between A. sativa var. Aurora and A. sterilis Ludoviciana have been reported in this paper. The cultivated type of basal articulation is dominant to the wild, with the intermediate forms usually distinguishable giving a 1:2:1 ratio. The kernels of the wild forms are brown or reddish black and those of the cult ...
... In connection with the investigational work on soybeans being carried on at the Illinois Agricultural Experiment Station in cooperation with the Division of Forage Crops and Diseases, Bureau of Plant Industry, U.S. Dept. of Agriculture, the genetics of the soybean occupies a prominent place. Because of the growing interest in this new crop, particularly from the breeding standpoint, it has seemed ...
... 1. The study of the behavior of ketene towards silk fibroin has been continued. 2. The rate of absorption of ketene by fibroin increases with rise of temperature, and with increase of the concentration of ketene exposed to the fibre. 3. That ketene combines with the phenolic group of typosine, and the free α-amino groups in fibroin is evidenced by the failure of completely ketenized silk to respon ...
... A cross was made between a Chinese variety and Nebawa introduced from Australia. Both varieties are common wheat, Triticum vulgare. A genetical study was made in the F1, F2, F3, and F4 of this cross. The two parents were free from flag smut and were medium late, easy in thrashing, and fully fertile. The F2, F3, and F4 of the cross gave a small percentage of susceptible plants. The genes for flag s ...
... Work on methods of specifying uniform color tolerances for various materials has been going on at the National Bureau of Standards for several years. This paper describes the progress of this work, particularly as it relates to textile materials which offer special complications of their own. A formula for the purpose of expressing the size of color differences is derived for observing conditions ...
... This is the first of a series of research progress reports by Prof. E. R. Schwarz on the "Technical Evaluation of Textile Finishing Treatments" that is being sponsored jointly through a co-operative research agree— ment between Massachusetts Institute of Technology and the American Association of Textile Chemists and Color— ists. The A. A. T. C. C. is providing the funds so that M. I. T. can assig ...
... : 1 Each breeding pair of Robins own a territory of between 2000 and over 10,000 square yards in size; the unshared autumn territory varies between 800 and 6000 square yards. 2 The owner of a territory sings and attacks other Robins only within its territory, but commonly trespasses when feeding. 3 The Robin's posturing is aggressive, not courtship, and the red breast is a threat colour. 4 In the ...
... Summary and ConclusionsElectrodialyzed bentonite suspensions were treated with FeCl₃ in quantities from 12.5 to 250 per cent of the adsorption capacity. They were washed until no Cl⁻ appeared in the washing and several physico-chemical properties of the Fe clays were studied. Some of the more important data are summarized below. The Fe was about all adsorbed from additions of FeCl₃ up to 2.5 symme ...
... SummaryA comparison of gravimetric, color-imetric and volumetric methods for the determination of exchangeable magnesium in soil by precipitation as 8-hydroxyquinoline was made. When small quantities of magnesium were present in soil extracts, it was found that certain recommended procedures gave inaccurate results. The potassium bromate method gave positive errors which may not always appear in t ...
... Light decreased the breaking strength of the viscose, acetate and cuprammonium rayons uniformly. Heat decreased the break ing strength of all of them considerably, but the cellulose acetate rayons were more resistant to heat than the other two kinds. Light produced little change and heat much change in color. The cellu lose acetate rayon fabrics were affected the least. The ash alka linity showed ...
... It has been known for nearly a century that cupram monium hydroxide solutions have a pronounced effect upon the cell walls of plants. Many investigators have ob served, for example, that when cotton fibres are treated with this reagent, the bulk of the fibre appears to be dis solved, thereby producing a viscous solution from which cellulose can be precipitated by various means. The solu bility of ...
... An investigation was undertaken to obtain information con cerning the fine details of structure of wool fibers and especially of their constituent scale and cortical cells. Treatment of chemi cally modified wool with the enzyme, pepsin, was found to be an excellent method for releasing individual cells for such studies. It is shown by microdissection that the striated appearance of the cortical ce ...
... Disposal of textile wastes with domestic sewage appears log ical since it reduces the capital outlay for plant facilities, places all treatment under constant and skilled supervision, and elimi nates many chances of neglect and mismanagement by mill labor. Of the many problems arising from combined treatment the most important is the character of sewage reaching the disposal plant. Equalization an ...
... Genetic studies with Melilotus alba have shown that: The growth habits of F.C. 13074 and of the dwarf-branching segregate of F.P.I. 89911 are inherited as simple recessives to the common growth type. The gene determining the dwarf-branching character in F.C. 13074 is different from the gene determining a similar character in the Alpha type and also different from the gene determining the dwarf-bra ...
... Measurements of the color of standards for grades of cotton, which were made in the United States Department of Agriculture, are shown in a series of diagrams. These illustrate the relation of the grades to each other in color, how the color may change during a period of years, and color measurements of the original standards, copies of them, and of the standards adopted in 1946 to become effectiv ...
... This specialized bibliography is the second in a series which is planned for pub lication in TEXTILE RESEARCH JOURNAL. The first , which appeared in the Octo ber, 1915, issue, was entitled " Selected References on Surface Chemistry and Physics." Each bibliography in the series is intended to present a list of books and other primary references in a restricted field, which will serve as a basis for ...
... A dye-staining and sectioning technique has been developed which permits, for the first time, a direct, visual determination of the location of melamine resin in treated wool fibers. The resin appears to be distributed uniformly within the fiber structure. Techniques are described and the results are illustrated by photomicrographs (one in color). ...
chemical structure; color; fabrics; textile fibers
Abstract:
... Certain specialized bibliographies have appeared in previous issues of TEXTILE RESEARCH JOURNAL.† These were prepared in accordance with a pattern estab lished by the JOURNAL and each is intended to serve as a reference list of books and other primary referencés in a restricted field of inquiry. In this paper we have departed somewhat from our established pattern because of the fact that, as Dr. G ...
... The apparent cause and location of the color in blue cotton has been studied. The color which appeared to be located in the lumen was not particularly resistant to conventional scour ing and bleaching agents. The controlling factor in the bleaching of blue cotton appeared to be lack of access to the blue color in the lumen by the treating solution. No ready means of rapid access to the lumen of th ...
... The "dispersion staining" method is used for observing textile fibers in colors which aid in the determination of their structure and in their identification. Fibers which are classified as striated or microscopically structureless are distinguished by this technique without the need for any special preparation of the fiber. A sample is mounted in a liquid of high dispersion which has a refractive ...
... Dyeing as it is known today in the textile industry is a technical process which has recently graduated from the stage of being an art to becoming a science. The primary thing responsible for this change is the control of the variables in the process. The spectrophotometer is a physi cal tool which is eminently suited to measure the most important variable of all, the shade and strength of the dye ...
... A process of differential dyeing employed to distinguish between thick- and thin-walled cotton fibers has now been utilized to show visually that the drying of normal cotton fibers for the first time-as when the boll opens in the field -greatly affects their dyeing properties. The effect was observed as a pronounced color difference when one lock from a nearly mature boll, cut open in the laborato ...
... The inheritance of 10 qualitative characters in soybeans was studied and reported on. A number of these characters have been studied previously and the mode of inheritance confirmed in the present work. A new hypothesis for the explanation of pubescence color has been presented. Several characters were reported on for the first time in this work; these include leaf abscission, pseudo-mosaic plant ...
... (1) A high degree of resistance to leaf anthracnose (Colletotrichum graminicolum) is reported. (2) This resistance is controlled by a single major factor (L) dominant to susceptibility (1). (3) Plant color Pp following injury by disease or mechanical means is inherited independently of the factor pair L1 governing resistance to leaf anthracnose. ...
... Color is an important physical property of wool fibers which can be defined with the aid of color- measuring instruments. The color of a fiber is a limiting factor in the range of shades into which the fiber can be dyed. Color changes which occur to the wool substrate itself during normal proc essing steps, such as scouring, carbonizing, bleaching, dyeing, steaming, drying, and others, are sig nif ...
... Nylon filament yarn colored with acid dyes frequently shows unevenness in appearance. In some cases this unevenness can be traced to slight differences in orientation due to uneven drawing. In other cases small changes in the number of amine end-groups in the polymer cause this effect. It has been found that this unevenness can be minimized, and with some colors completely eliminated, by dyeing in ...
base saturation; cation exchange capacity; clay; colloidal properties; color; crystal structure; exchangeable aluminum; juveniles; kaolin; pH; phosphates; tropics; Andes region; Ecuador; Peru
Abstract:
... Equatorial soils of Ecuador and Peru were studied by chemical, differential thermal, and X-ray spectrographic methods of analysis with the aim of clarifying their classification and fertility properties. A classification key permits the presentation of the soils and their properties according to major soil groups. In the humid tropical regions kaolin clays are common, but there is also evidence of ...
... Birefringence and refractive indices of synthetic fibers are measured by the polarization color and immersion methods. These properties prove to be much more consistent and characteristic for synthetic fibers than for natural fibers and rayons, to which previous studies had mainly been confined. These fea tures can therefore be used in the identification of synthetic fibers. A simple polarizing de ...
... Modification of the fiber surface during processing has been studied on three wools of Aus tralian fine, domestic fine, and domestic medium grades. Samples were taken from each wool at each stage of their manufacture into a worsted fabric by the Forstmann Woolen Company. Groups of fibers, selected randomly from each sample, were treated with Pauly reagent and ex amined microscopically. The amount ...
... A modification of the turbidimetric cobaltinitrite method for determining potassium is presented. The method is applicable to use in routine soil testing laboratories and has been in use for 3 years in Kansas county laboratories. The method is not appreciably affected by temperature changes over the temperature range of 15° to 35° C but is subject to errors at temperatures greater than this. Compa ...
Podzols; X-ray diffraction; base saturation; brown forest soils; cations; chemical analysis; color; forests; frost; gibbsite; glaciation; glaciers; pH; soil classification; weathering; Pennsylvania; Sweden; Wisconsin
Abstract:
... A Brown Forest soil, soils having polygenetic profiles, and soils believed to have developed in materials formed by frost action and slope creep were mapped in Potter County, Pa., an area of normally well developed Podzol soils. Because of the complex conditions which existed at the margins of the continental glaciers, soil classification is difficult in these areas. Field observations and the fol ...
... Examination of cotton samples in ultraviolet light revealed a variable color fluorescence of the entire bale stock, ranging from violet to blue-violet to ivory-white. Further experiments in dicated that the entire fiber mass could be made ivory-white by heating. Unlike commercially ginned fibers, hand-ginned fibers appeared uniformly bluish in ultraviolet radiations, but they could also be made iv ...
... The method of Drosdoff and Nearpass was modified for the determination of magnesium in plant and soil extracts. One method is proposed for the analysis of ammonium acetate extracts of soils, and another method is proposed for the analysis of plant materials and water extracts of soils. These methods, which determine the magnesium content colorimetrically with the use of thiazole yellow, introduce ...
... The purpose of this study was to determine the sedimentation velocity and free diffusion behavior of humic acid extracted from Miami clay with neutral sodium pyrophosphate solution. In addition the organic colloids extracted from several soils of the Miami catena were analyzed using the eletrophoretic technique. The electrophoresis examination indicated that the organic colloids extracted from the ...
... The dyeing properties and the lightfastness on cellulose acetate rayon of several azo dyes prepared from m-trimethylsilyl- and m-triphenylsilyl-N,N]- bis- (β-hydroxyethyl)-aniline have been examined. The dyes derived from m-triphenylsilyl-N,N-bis-(β-hydroxyethyl)-aniline have been found to lack substantivity for cellulose acetate and to have inferior lightfastness, whereas the dyes obtained from t ...
aerial photography; color; drainage; land use; landforms; landscapes; soil; soil surveys; vegetation; New York
Abstract:
... In many areas it appears possible to map soils, with some generalization, by combining stereoscopic interpretation of aerial photographs with field checks. As a test of this technique, the soil series were mapped on 4000 acres in the glaciated region of southern New York. The area was then mapped on foot in the usual manner. The stereo results came remarkably close to representing the true field c ...
... The sulfhydryl groups of treated keratin differ from those of ordinary thiol compounds in their reactivity toward sodium nitroprusside—they often do not give the characteristic red-violet coloration in slightly alkaline aqueous medium. Among the several modifications of keratin investigated, only keratin treated with thio glycollate gave a positive reaction. In all other cases, however, a positive ...
... A new and rapid technique for staining the skin of a rayon filament and hence for determining the skin area is described. The technique requires the combined use of two dyes, Solophenyl Fast Blue Green BL. (Geigy) and Aniline Gentian Violet. It is known that the Solophenyl Blue Green dye will only stain the core of a viscose filament. Upon the addition of Gentian Violet, the blue-green dye will be ...
... The flattened, twisted-ribbon shape of the natural cotton fiber is unique among textile fibers, and leads to characteristic differences in the reflection of light from cotton, in comparison with that from more rounded fibers. With natural cotton, there are a large number of small planes set at every possible angle, so that light is not merely scattered, but also is in part reflected in a regular m ...
... The presence of relatively large particles of a vat dye in nylon has been found to give outstanding lightfastness. Nylon colored with large particles of "Ponsol" Red BN required exposures in the Fade-Ometer of more than 200 hrs. in order to obtain perceptible change in color. Ordinary dyeing procedures, in which extremely small particles of dye are deposited in the nylon fiber, lead to Fade-Ometer ...
... Farm operators in much of the Tennessee Valley have need for information that will aid them in better understanding and using their soil resources. A cooperative program was launched by the Tennessee Agricultural Experiment Station, the Extension Service, TVA, PMA, and BPISAE of the USDA, in Lawrence County, Tenn., to help meet this need. A detailed soil survey of the county, the first step in thi ...
... A method for the calibration of the efficiency of both calcitic and dolomitic limestone in relation to their rapidity in correcting acidity in soils is proposed. The procedure is as follows: Exactly 1.0 gm. of the limestone to be tested is added to 250 ml. of boiling 0.07 N disodium ethylene-diaminetetraacetate which is contained in a 500-ml. Erlenmeyer flask connected to a reflux condenser. After ...
... The mechanism of cyanoethylation of cotton is discussed, and it is shown that for best effi ciency the pick-up of sodium hydroxide must not exceed 15% of the weight of the cotton. Measurements of physical properties show that any increases in the breaking strength or elon gation of yarns are results of changes in frictional forces. The physical properties of cyano ethylated fabrics reflect the pro ...
... Identical portions of productive Gila clay loam, an important irrigated soil in the southwest, were treated with Na₂CO₃ to obtain increasing levels of exchangeable sodium. After being incubated to equilibrium at field (moisture) capacity the soils were dried, ground and sieved for laboratory tests and greenhouse experiments. The treated soils showed increases in exchangeable sodium percentage, sol ...
... In order to adapt nitrate production for use in soil testing laboratories for the purpose of evaluating the capacity of soils to supply nitrogen to crops, a procedure was evolved which is accurate yet inexpensive and can be determined on a mass production basis. The influence of environmental factors on nitrate production during incubation in the laboratory was studied along with methods of sample ...
... The morphological, chemical and mineralogical characteristics of soils are to a considerable extent attributable to the amount of water that enters the soil. The Clarion, Nicollet, and Webster soils in south central Minnesota were investigated. These soils are members of a catena developed on calcareous glacial till of Wisconsin age (Mankato substage). Three profiles of each series from widely sca ...