[ { "id": "https://thesis.library.caltech.edu/id/eprint/4399", "eprint_id": 4399, "rev_number": 22, "documents": [ { "id": "/id/document/7192", "doc_id": 7192, "rev_number": 2, "files": [ { "id": "/id/file/43810", "fileid": 43810, "datasetid": "document", "objectid": 7192, "filename": "Watson_k_1964.pdf", "mime_type": "application/pdf", "filesize": 4070255, "mtime": "2012-12-26 03:08:22", "url": "/4399/1/Watson_k_1964.pdf" } ], "eprint_id": 4399, "pos": 1, "mime_type": "application/pdf", "format": "application/pdf", "format_desc": "Watson_k_1964.pdf", "language": "en", "security": "public", "license": "other", "main": "Watson_k_1964.pdf", "media_duration": "0", "media_aspect_ratio": "0", "media_sample_start": "0", "media_sample_stop": "0", "content": "final", "relation": { "items": [ { "type": "http://eprints.org/relation/hasVolatileVersion", "uri": "/id/document/23721" }, { "type": "http://eprints.org/relation/haspreviewThumbnailVersion", "uri": "/id/document/23721" }, { "type": "http://eprints.org/relation/hasVersion", "uri": "/id/document/23721" } ] } }, { "id": "/id/document/23721", "doc_id": 23721, "rev_number": 2, "files": [ { "id": "/id/file/43808", "fileid": 43808, "datasetid": "document", "objectid": 23721, "filename": "preview.png", "mime_type": "image/png", "hash": "4db8adac378e561715c420fade170dcf", "hash_type": "MD5", "filesize": 12985, "mtime": "2012-12-26 03:08:22", "url": "/4399/2/preview.png" } ], "eprint_id": 4399, "pos": 2, "placement": 2, "mime_type": "image/png", "format": "image/png", "language": "en", "security": "public", "license": "other", "main": "preview.png", "media_duration": "0", "media_aspect_ratio": "0", "media_sample_start": "0", "media_sample_stop": "0", "relation": { "items": [ { "type": "http://eprints.org/relation/isVolatileVersionOf", "uri": "/id/document/7192" }, { "type": "http://eprints.org/relation/ispreviewThumbnailVersionOf", "uri": "/id/document/7192" }, { "type": "http://eprints.org/relation/isVersionOf", "uri": "/id/document/7192" } ] } }, { "id": "/id/document/45949", "doc_id": 45949, "rev_number": 3, "files": [ { "id": "/id/file/134615", "fileid": 134615, "datasetid": "document", "objectid": 45949, "filename": "Watson Thesis Permission Form.txt", "mime_type": "message/rfc822\\0117bit", "hash": "80f5078c4a3f7f726933cc65dd40adc9", "hash_type": "MD5", "filesize": 1024, "mtime": "2014-02-11 21:35:07", "url": "/4399/3/Watson Thesis Permission Form.txt" } ], "eprint_id": 4399, "pos": 3, "placement": 3, "mime_type": "message/rfc822\\0117bit", "format": "text/plain", "format_desc": "author ok feb 2014", "language": "en", "security": "internal", "license": "other", "main": "Watson Thesis Permission Form.txt", "media_duration": "0", "media_aspect_ratio": "0", "media_sample_start": "0", "media_sample_stop": "0", "content": "release" } ], "eprint_status": "archive", "userid": 2, "dir": "disk0/00/00/43/99", "datestamp": "2002-11-04", "lastmod": "2024-01-26 00:25:31", "status_changed": "2009-09-25 03:17:53", "type": "thesis", "metadata_visibility": "show", "creators": { "items": [ { "email": "kodi57@gmail.com", "id": "Watson-Kenneth", "name": { "family": "Watson", "given": "Kenneth" }, "show_email": "NO" } ] }, "title": "I. The Thermal Conductivity Measurements of Selected Silicate Powders in Vacuum from 150\u00b0 to 350\u00b0 K. II. An Interpretation of the Moon's Eclipse and Lunation Cooling as Observed through the Earth's Atmosphere from 8-14 Microns", "ispublished": "unpub", "full_text_status": "public", "keywords": "(Geophysics and Planetary Science) ; thermal conductivity, silicate powders, Moon, thermal model", "note": "This was the first Ph. D. thesis in Planetary Science at Caltech.\r\n\r\nTitle varies slightly in the 1964 Caltech commencement program: I. The Thermal Conductivity Measurements of Selected Silicate Powders in Vacuum from 150\u00b0 to 350\u00b0 K. II. An Interpretation of the Moon's Eclipse and Lunation Cooling as Observed through the Earth's Atmosphere from 8-14\u00b5", "abstract": "
An apparatus was constructed to measure the thermal conductivity of powders in vacuum from 150\u00b0 to 350\u00b0K. It was found that the conductivity of selected silicate powders can be adequately represented, within the experimental errors, by a temperature independent term related to the contact conduction plus a temperature cube term which is due to radiative transfer between and through the grains. The conductivity for glass spheres approximately suggests an inverse grain size dependence and does not appear to be related in any simple manner to the elastic contact area between the spheres. The effects of angular grains, produced by crushing, and limited chemical composition range are not significant when compared with the experimental errors. The radiative transfer term which is grossly independent of chemical composition and grain texture is dominated by radiation between the grains for grain sizes > 300 \u03bc. Radiation through the grains is significant for grain sizes < 100 \u03bc.
\r\n\r\nPrevious interpretations of the eclipse observations of Pettit and Nicholson indicate that homogeneous constant thermal property models provide an adequate fit. The recent lunation observations of Murray and Wildey cannot be adequately explained by homogeneous models with either constant thermal properties or with thermal properties which are based on the results of this experimental investigation and existing specific heat data. It is suggested that the possibility of layering can best be examined in the region of the morning terminator.
\r\n", "date": "1964", "date_type": "degree", "id_number": "CaltechETD:etd-11042002-153232", "refereed": "FALSE", "official_url": "https://resolver.caltech.edu/CaltechETD:etd-11042002-153232", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "collection": "CaltechTHESIS", "reviewer": "Kathy Johnson", "deposited_by": "Imported from ETD-db", "deposited_on": "2002-11-04", "doi": "10.7907/7HDE-1M52", "alt_title": { "items": [ "Thermal Conductivity Measurements of Selected Silicate Powders in Vacuum from 150\u00b0 to 350\u00b0 K", "Thermal Conductivity Measurements of Selected Silicate Powders in Vacuum from 150 degrees to 350 degrees K", "Interpretation of the Moon's Eclipse and Lunation Cooling as Observed through the Earth's Atmosphere from 8-14 Microns", "Interpretation of the Moon's Eclipse and Lunation Cooling as Observed through the Earth's Atmosphere from 8-14\u00b5" ] }, "divisions": { "items": [ "div_gps" ] }, "institution": "California Institute of Technology", "thesis_type": "phd", "thesis_advisor": { "items": [ { "id": "Brown-Harrison", "name": { "family": "Brown", "given": "Harrison" }, "role": "advisor" }, { "id": "Murray-B-C", "name": { "family": "Murray", "given": "Bruce C." }, "role": "advisor" } ] }, "thesis_committee": { "items": [ { "id": "Press-F", "name": { "family": "Press", "given": "Frank" }, "role": "chair" }, { "id": "Wasserburg-G-J", "name": { "family": "Wasserburg", "given": "Gerald J." }, "role": "member" }, { "id": "Sharp-R-P", "name": { "family": "Sharp", "given": "Robert P." }, "role": "member" }, { "id": "Brown-Harrison", "name": { "family": "Brown", "given": "Harrison" }, "role": "member" }, { "id": "Murray-B-C", "name": { "family": "Murray", "given": "Bruce C." }, "role": "member" } ] }, "thesis_degree": "PHD", "thesis_degree_grantor": "California Institute of Technology", "thesis_submitted_date": "2002-11-04", "thesis_defense_date": "1964-01-01", "thesis_approved_date": "2002-11-04", "review_status": "approved", "option_major": { "items": [ "geophys", "plansci" ] }, "copyright_statement": "I hereby certify that, if appropriate, I have obtained and attached hereto a written permission statement from the owner(s) of each third party copyrighted matter to be included in my thesis, dissertation, or project report, allowing distribution as specified below. I certify that the version I submitted is the same as that approved by my advisory committee.\n\nI hereby grant to California Institute of Technology or its agents the non-exclusive\nlicense to archive and make accessible, under the conditions specified below,\nmy thesis, dissertation, or project report in whole or in part in all forms of media, now or hereafter known. I retain all other ownership rights to the copyright of the thesis, dissertation or project report. I also retain the right to use in future works (such as articles or books) all or part of this thesis, dissertation, or project report.", "resource_type": "thesis", "pub_year": "1964", "author_list": "Watson, Kenneth", "advisor_list": "Brown, Harrison and Murray, Bruce C.", "comittee_list": "Press, Frank; Wasserburg, Gerald J.; et el." }, { "id": "https://thesis.library.caltech.edu/id/eprint/6612", "eprint_id": 6612, "rev_number": 26, "documents": [ { "id": "/id/document/13484", "doc_id": 13484, "rev_number": 3, "files": [ { "id": "/id/file/87464", "fileid": 87464, "datasetid": "document", "objectid": 13484, "filename": "Millard_ht_1962.pdf", "mime_type": "application/pdf", "filesize": 42062858, "mtime": "2012-12-26 04:38:30", "url": "/6612/1/Millard_ht_1962.pdf" } ], "eprint_id": 6612, "pos": 1, "mime_type": "application/pdf", "format": "application/pdf", "language": "en", "security": "public", "license": "other", "main": "Millard_ht_1962.pdf", "media_duration": "0", "media_aspect_ratio": "0", "media_sample_start": "0", "media_sample_stop": "0", "content": "final" }, { "id": "/id/document/13487", "doc_id": 13487, "rev_number": 3, "files": [ { "id": "/id/file/207439", "fileid": 207439, "datasetid": "document", "objectid": 13487, "filename": "Millard_ht_1962.zip", "mime_type": "application/zip", "filesize": 202871324, "mtime": "2016-08-22 21:23:08", "url": "/6612/2/Millard_ht_1962.zip" } ], "eprint_id": 6612, "pos": 2, "format": "application/zip", "format_desc": "TIFF", "language": "en", "security": "internal", "license": "other", "main": "Millard_ht_1962.zip", "media_duration": "0", "media_aspect_ratio": "0", "media_sample_start": "0", "media_sample_stop": "0", "content": "final" }, { "id": "/id/document/126976", "doc_id": 126976, "rev_number": 1, "files": [ { "id": "/id/file/372410", "fileid": 372410, "datasetid": "document", "objectid": 126976, "filename": "indexcodes.txt", "mime_type": "text/plain", "hash": "275718ea2c3e6a9f76a88fb2b6d92386", "hash_type": "MD5", "filesize": 37475, "mtime": "2021-06-24 01:16:40", "url": "/6612/3/indexcodes.txt" } ], "eprint_id": 6612, "pos": 3, "placement": 3, "mime_type": "text/plain", "format": "other", "format_desc": "Generate index codes conversion from application/pdf to indexcodes", "language": "en", "security": "public", "license": "other", "main": "indexcodes.txt", "media_duration": "0", "media_aspect_ratio": "0", "media_sample_start": "0", "media_sample_stop": "0", "relation": { "items": [ { "type": "http://eprints.org/relation/isVersionOf", "uri": "/id/document/13484" }, { "type": "http://eprints.org/relation/isVolatileVersionOf", "uri": "/id/document/13484" }, { "type": "http://eprints.org/relation/isIndexCodesVersionOf", "uri": "/id/document/13484" } ] } } ], "eprint_status": "archive", "userid": 104, "dir": "disk0/00/00/66/12", "datestamp": "2011-08-23 17:25:30", "lastmod": "2023-12-21 20:39:08", "status_changed": "2011-08-23 17:25:30", "type": "thesis", "metadata_visibility": "show", "creators": { "items": [ { "id": "Millard-Hugh-Thompson", "name": { "family": "Millard", "given": "Hugh Thompson, Jr." }, "show_email": "NO" } ] }, "title": "I. A Procedure for the Analysis of Polonium-210 and Lead-210 in Rocks. II. A Characterization of the Meteorite Flux at the Earth's Orbit", "ispublished": "unpub", "full_text_status": "public", "keywords": "(Chemistry)", "abstract": "Part I. A method for the analysis of polonium-210 (138.4 day\r\nhalf-life) and lead-212 (10.6 hour half-life) in rocks has\r\nbeen studied. The procedure involves dissolution of the\r\nsample and addition of 10 mg. lead carrier. The polonium\r\nis separated by spontaneous electrodeposition on a silverfoil disk at room temperature from a 0.5F HCl medium containing 0.05F hydrazine and the alpha-activity from the\r\npolonium-210 measured, with a scintillation counter. Sodium\r\ntartrate is added to the solution remaining from the polonium deposition, the pH raised to 4.7, and the lead-212 deposited with the lead carrier on a second silver-foil disk. The yield of lead is determined gravimetrically and the decaying alpha-activity supported by the lead-212 observed with the scintillation counter. The procedure has been calibrated by using minerals which had been analyzed for lead-210 and thorium-232 by other methods. The effects of temperature, volume, and inhibiting ions on the yield and rate of deposition of polonium were also studied. The procedure was tried on a synthetic uraninite-thorite mixture and on the zircon from the Pacoima Canyon pegmatite. The results indicate that extreme care must be taken to get all material into solution and to avoid high temperatures during fusion of the sample. The weight equivalent uranium found from the polonium-210 analysis on the zircon agreed with the mass spectrometric value for the uranium content to 3.3%.\r\n\r\nPart II. A study has been conducted in order to better characterize the meteorite flux at the earth's orbit with respect to type, mass, direction, and magnitude. A survey of the meteorite data was made by placing the information on punch cards and sorting these cards according to various categories. On the basis of the year of fall, it was noted that the achondrites were more abundant than the irons from 1850 to 1870 and that the reverse was true from 1890 and 1910. No enstatite chondrites fell prior to the 1860's and a large number of this type fell during 1930. A chi-squared test applied to the monthly patterns of fall indicates that the distributions for the veined-hypersthene chondrites, the veined-white hypersthene chondrites, the achondrites, and the howarditic achondrites were those least likely to be\r\nrandom, suggesting that these types may travel in definite\r\norbits. As for the direction of the flux, the hourly patterns are heavily biased toward the daylight hours with no 6:00 maximum as in the case of sporadic meteors. The\r\nachondrites display an interesting bimodal distribution\r\nduring the daylight hours. The magnitude of the flux shows\r\nsignificant variations with year among which the decrease\r\nsince 1940 appears to be most important. The functional\r\nrelationship between the rate of meteorite recovery and\r\nthe rural population density has been investigated and an\r\naverage value of 1.0 meteorite/10^6 sq. km.-year found for\r\nthe total flux, R_o, arriving at the bottom of the atmosphere for the period 1810 to 1950.\r\n", "date": "1962", "date_type": "degree", "id_number": "CaltechTHESIS:08232011-094813077", "refereed": "FALSE", "official_url": "https://resolver.caltech.edu/CaltechTHESIS:08232011-094813077", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "collection": "CaltechTHESIS", "reviewer": "Kathy Johnson", "deposited_by": "Dan Anguka", "deposited_on": "2011-08-23 17:25:30", "doi": "10.7907/WEPX-9Q33", "alt_title": { "items": [ "Procedure for the Analysis of Polonium-210 and Lead-210 in Rocks", "Characterization of the Meteorite Flux at the Earth's Orbit" ] }, "divisions": { "items": [ "div_chem" ] }, "institution": "California Institute of Technology", "thesis_type": "phd", "thesis_advisor": { "items": [ { "id": "Brown-Harrison", "name": { "family": "Brown", "given": "Harrison" }, "role": "advisor" } ] }, "thesis_committee": { "items": [ { "name": { "family": "Unknown", "given": "Unknown" } } ] }, "thesis_degree": "PHD", "thesis_degree_grantor": "California Institute of Technology", "thesis_defense_date": "1962-01-01", "review_status": "approved", "option_major": { "items": [ "chemistry" ] }, "copyright_statement": "Author's Rights Authorization: I hereby certify that, if appropriate, I have obtained a written permission statement from the owner(s) of each third party copyrighted matter to be included in my thesis, dissertation, or project report, allowing distribution as specified below. I certify that the version I submitted here is the same as that approved by my advisory committee.\n\nI hereby grant to California Institute of Technology or its agents the non-exclusive license to archive and make accessible, under the conditions specified under \"Thesis Availability\" in this submission, my thesis, dissertation, or project report in whole or in part in all forms of media, now or hereafter known. I retain all other ownership rights to the copyright of the thesis, dissertation, or project report. I also retain the right to use in future works (such as articles or books) all or part of this thesis, dissertation, or project report.", "resource_type": "thesis", "pub_year": "1962", "author_list": "Millard, Hugh Thompson, Jr.", "advisor_list": "Brown, Harrison", "comittee_list": "Unknown, Unknown" }, { "id": "https://thesis.library.caltech.edu/id/eprint/2790", "eprint_id": 2790, "rev_number": 13, "documents": [ { "id": "/id/document/5118", "doc_id": 5118, "rev_number": 2, "files": [ { "id": "/id/file/29902", "fileid": 29902, "datasetid": "document", "objectid": 5118, "filename": "Moore_cb_1960.pdf", "mime_type": "application/pdf", "filesize": 3874303, "mtime": "2012-12-26 02:54:28", "url": "/2790/1/Moore_cb_1960.pdf" } ], "eprint_id": 2790, "pos": 1, "mime_type": "application/pdf", "format": "application/pdf", "format_desc": "Moore_cb_1960.pdf", "language": "en", "security": "public", "license": "other", "main": "Moore_cb_1960.pdf", "media_duration": "0", "media_aspect_ratio": "0", "media_sample_start": "0", "media_sample_stop": "0", "content": "final", "relation": { "items": [ { "type": "http://eprints.org/relation/hasVolatileVersion", "uri": "/id/document/21670" }, { "type": "http://eprints.org/relation/haspreviewThumbnailVersion", "uri": "/id/document/21670" }, { "type": "http://eprints.org/relation/hasVersion", "uri": "/id/document/21670" } ] } }, { "id": "/id/document/21670", "doc_id": 21670, "rev_number": 2, "files": [ { "id": "/id/file/29900", "fileid": 29900, "datasetid": "document", "objectid": 21670, "filename": "preview.png", "mime_type": "image/png", "hash": "50e2b6b7273a34eee66c8af6eb4a4961", "hash_type": "MD5", "filesize": 12423, "mtime": "2012-12-26 02:54:27", "url": "/2790/2/preview.png" } ], "eprint_id": 2790, "pos": 2, "placement": 2, "mime_type": "image/png", "format": "image/png", "language": "en", "security": "public", "license": "other", "main": "preview.png", "media_duration": "0", "media_aspect_ratio": "0", "media_sample_start": "0", "media_sample_stop": "0", "relation": { "items": [ { "type": "http://eprints.org/relation/isVolatileVersionOf", "uri": "/id/document/5118" }, { "type": "http://eprints.org/relation/ispreviewThumbnailVersionOf", "uri": "/id/document/5118" }, { "type": "http://eprints.org/relation/isVersionOf", "uri": "/id/document/5118" } ] } } ], "eprint_status": "archive", "userid": 2, "dir": "disk0/00/00/27/90", "datestamp": "2006-07-14", "lastmod": "2023-11-07 19:05:59", "status_changed": "2009-09-25 02:44:59", "type": "thesis", "metadata_visibility": "show", "creators": { "items": [ { "id": "Moore-Carleton-Bryant", "name": { "family": "Moore", "given": "Carleton Bryant" }, "show_email": "NO" } ] }, "title": "I. Kinetics of the Reactions of Silver, Lead and Thallium with Thioacetamide. II. The Distribution of Barium, Titanium, Manganese, Iron, Nickel and Cobalt in Stony Meteorites", "ispublished": "unpub", "full_text_status": "public", "keywords": "(Chemistry)", "note": "Thesis title varies in 1960 Caltech commencement program: I. Kinetics of the Reactions of Silver, Lead and Thallium with Thioacetamide\r\nin Solution. II. The Distribution of Barium! Titanium, Manganese, Iron, Nickel, Cobalt and Chromium in Stony Meteorites.", "abstract": "NOTE: Text or symbols not renderable in plain ASCII are indicated by [...]. Abstract is included in .pdf document.\r\n\r\nThe precipitation of silver from acid solutions by thioacetamide at 60\u00b0C was investigated. Below pH 2 the reaction takes place predominantly by the hydrolysis of thioacetamide to form hydrogen sulfide. Above pH 2 a direct reaction between the silver and thioacetamide has a significant effect. The direct reaction rate equation was found to be\t[...]. At 60\u00b0C in a malonic acid - 0.1 VF sodium hydrogen malonate buffer k\" is 8.6 x 10(-7) mole 7/2 liter 7/2 minute(-1).\r\n\r\nThe presence of chloride ion inhibits the rate of direct reaction between lead and thioacetamide. The reaction is first order with respect to PbCl+ and about 50% slower than with Pb++ at 90\u00b0.\r\n\r\nThallous sulfide is precipitated by thioacetamide by both hydrolysis and direct reactions. The direct reaction is second order with respect to thallium, first order with respect to thioacetamide and probably inverse half order with respect to hydrogen ion.\r\n\r\nThe concentrations of barium, manganese and titanium have been determined spectrographically in 94 stony meteorites. There appear to be four barium concentration groups with median barium concentrations of 5, 10, 25 and 150 ppm. For the falls the average concentrations of manganese and titanium are 0.260 \u00b1 0.028% and 0.064 \u00b1 0.008%. For the finds the manganese content is 0.235 \u00b1 0.023% and the titanium content is 0.059 \u00b1 0.007%. The presence of grouping in chondrites has been confirmed by X-ray fluorescence spectroscopic analysis.", "date": "1960", "date_type": "degree", "id_number": "CaltechETD:etd-06302006-091438", "refereed": "FALSE", "official_url": "https://resolver.caltech.edu/CaltechETD:etd-06302006-091438", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "collection": "CaltechTHESIS", "reviewer": "Kathy Johnson", "deposited_by": "Imported from ETD-db", "deposited_on": "2006-07-14", "doi": "10.7907/W8C0-E784", "alt_title": { "items": [ "Kinetics of the Reactions of Silver, Lead and Thallium with Thioacetamide", "Kinetics of the Reactions of Silver, Lead and Thallium with Thioacetamide in Solution", "Distribution of Barium, Titanium, Manganese, Iron, Nickel and Cobalt in Stony Meteorites", "Distribution of Barium! Titanium, Manganese, Iron, Nickel, Cobalt and Chromium in Stony Meteorites" ] }, "divisions": { "items": [ "div_chem" ] }, "institution": "California Institute of Technology", "thesis_type": "phd", "thesis_advisor": { "items": [ { "id": "Swift-E-H", "name": { "family": "Swift", "given": "Ernest H." }, "role": "advisor" }, { "id": "Brown-Harrison", "name": { "family": "Brown", "given": "Harrison" }, "role": "advisor" } ] }, "thesis_committee": { "items": [ { "name": { "family": "Unknown", "given": "Unknown" } } ] }, "thesis_degree": "PHD", "thesis_degree_grantor": "California Institute of Technology", "thesis_submitted_date": "2006-06-30", "thesis_defense_date": "1960-01-01", "thesis_approved_date": "2006-07-14", "review_status": "approved", "option_major": { "items": [ "chemistry" ] }, "copyright_statement": "I hereby certify that, if appropriate, I have obtained a written permission statement from the owner(s) of each third party copyrighted matter to be included in my thesis, dissertation, or project report, allowing distribution as specified below. I certify that the version I submitted is the same as that approved by my advisory committee.\n\nI hereby grant to California Institute of Technology or its agents the non-exclusive\nlicense to archive and make accessible, under the conditions specified below,\nmy thesis, dissertation, or project report in whole or in part in all forms of media, now or hereafter known. I retain all other ownership rights to the copyright of the thesis, dissertation or project report. I also retain the right to use in future works (such as articles or books) all or part of this thesis, dissertation, or project report.", "resource_type": "thesis", "pub_year": "1960", "author_list": "Moore, Carleton Bryant", "advisor_list": "Swift, Ernest H. and Brown, Harrison", "comittee_list": "Unknown, Unknown" }, { "id": "https://thesis.library.caltech.edu/id/eprint/1134", "eprint_id": 1134, "rev_number": 15, "documents": [ { "id": "/id/document/1742", "doc_id": 1742, "rev_number": 2, "files": [ { "id": "/id/file/10846", "fileid": 10846, "datasetid": "document", "objectid": 1742, "filename": "Lovering_jf_1956.pdf", "mime_type": "application/pdf", "filesize": 3098210, "mtime": "2012-12-26 02:35:46", "url": "/1134/1/Lovering_jf_1956.pdf" } ], "eprint_id": 1134, "pos": 1, "mime_type": "application/pdf", "format": "application/pdf", "format_desc": "Lovering_jf_1956.pdf", "language": "en", "security": "public", "license": "other", "main": "Lovering_jf_1956.pdf", "media_duration": "0", "media_aspect_ratio": "0", "media_sample_start": "0", "media_sample_stop": "0", "content": "final", "relation": { "items": [ { "type": "http://eprints.org/relation/hasVolatileVersion", "uri": "/id/document/18522" }, { "type": "http://eprints.org/relation/haspreviewThumbnailVersion", "uri": "/id/document/18522" }, { "type": "http://eprints.org/relation/hasVersion", "uri": "/id/document/18522" } ] } }, { "id": "/id/document/18522", "doc_id": 18522, "rev_number": 2, "files": [ { "id": "/id/file/10844", "fileid": 10844, "datasetid": "document", "objectid": 18522, "filename": "preview.png", "mime_type": "image/png", "hash": "138a3f9056e4969ff8c300241cc73a2b", "hash_type": "MD5", "filesize": 8935, "mtime": "2012-12-26 02:35:45", "url": "/1134/2/preview.png" } ], "eprint_id": 1134, "pos": 2, "placement": 2, "mime_type": "image/png", "format": "image/png", "language": "en", "security": "public", "license": "other", "main": "preview.png", "media_duration": "0", "media_aspect_ratio": "0", "media_sample_start": "0", "media_sample_stop": "0", "relation": { "items": [ { "type": "http://eprints.org/relation/isVolatileVersionOf", "uri": "/id/document/1742" }, { "type": "http://eprints.org/relation/ispreviewThumbnailVersionOf", "uri": "/id/document/1742" }, { "type": "http://eprints.org/relation/isVersionOf", "uri": "/id/document/1742" } ] } } ], "eprint_status": "archive", "userid": 2, "dir": "disk0/00/00/11/34", "datestamp": "2004-03-26", "lastmod": "2023-07-13 22:14:10", "status_changed": "2009-09-25 01:55:50", "type": "thesis", "metadata_visibility": "show", "creators": { "items": [ { "id": "Lovering-John-Francis", "name": { "family": "Lovering", "given": "John Francis" }, "show_email": "NO" } ] }, "title": "Structural and Compositional Studies on Selected Phases of Iron and Stony-Iron Meteorites", "ispublished": "unpub", "full_text_status": "public", "keywords": "(Geochemistry and Paleoecology)", "note": "Title varies in 1956 Caltech commencement program: \"Structural and Compositional Studies on Selected Phases of Iron and Stony-Iron Meteorites with New Data Concerning the Origin of the Meteorites\"", "abstract": "On the basis of new data for the frequency of band width distributions in a collection of 63 octahedrites, a revised classification into coarse, medium and fine octahedrites has been proposed. A study of the nickel contents and structures of iron meteorites would suggest that the following relationships hold: hexahedrites and nickel-poor ataxites, 5.5-6.0% nickel; coarse octahedrites, 6.0-7.2% nickel; medium octahedrites, 7.0-10.2% nickel; fine octahedrites 7.7-14% nickel; nickel-rich ataxites, 14.23(?)% nickel.\r\n\r\nNew data on the metal phase of iron meteorites indicate that the gallium and germanium contents are distributed between three distinct levels, confirming a previous observation by Goldberg, Uchiyama and Brown (1951) with regard to gallium. Cobalt and copper values are shown to vary more or less sympathetically with the nickel content. The distribution of chromium would appear to be complicated by the presence of troilite either close to, or contaminating, the sample analysed. Similar data for the metal phase of nine stony-iron meteorites suggest a similarity in nickel content and trace element content of all the samples analysed.\r\n\r\nSemi-quantitative determinations have been made of cobalt, chromium, copper, germanium, manganese, nickel, lead, tin, vanadium and zinc in troilite from fourteen iron and two stony-iron meteorites. Similar determinations have been made on schreibersite from two iron meteorites. Semi-quantitative analyses of barium, cobalt, chromium, copper, gallium, germanium, manganese, nickel, tin, titanium, vanadium and zirconium in olivine from four pallasites, together with macro-analyses and optical data, suggest that the olivine has a constant composition.\r\n\r\nThe data have been used to calculate new abundances for these elements in meteorites and new data on the geochemical behavior of these elements.", "date": "1956", "date_type": "degree", "id_number": "CaltechETD:etd-03262004-144306", "refereed": "FALSE", "official_url": "https://resolver.caltech.edu/CaltechETD:etd-03262004-144306", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "collection": "CaltechTHESIS", "reviewer": "Kathy Johnson", "deposited_by": "Imported from ETD-db", "deposited_on": "2004-03-26", "doi": "10.7907/Z69X-XR92", "alt_title": { "items": [ "Structural and Compositional Studies on Selected Phases of Iron and Stony-Iron Meteorites with New Data Concerning the Origin of the Meteorites" ] }, "divisions": { "items": [ "div_gps" ] }, "institution": "California Institute of Technology", "thesis_type": "phd", "thesis_advisor": { "items": [ { "id": "Brown-Harrison", "name": { "family": "Brown", "given": "Harrison" }, "role": "advisor" } ] }, "thesis_committee": { "items": [ { "name": { "family": "Unknown", "given": "Unknown" } } ] }, "thesis_degree": "PHD", "thesis_degree_grantor": "California Institute of Technology", "thesis_submitted_date": "2004-03-26", "thesis_defense_date": "1956-01-01", "thesis_approved_date": "2004-03-26", "review_status": "approved", "option_major": { "items": [ "geochem" ] }, "option_minor": { "items": [ "geol" ] }, "copyright_statement": "I hereby certify that, if appropriate, I have obtained a written permission statement from the owner(s) of each third party copyrighted matter to be included in my thesis, dissertation, or project report, allowing distribution as specified below. I certify that the version I submitted is the same as that approved by my advisory committee.\n\nI hereby grant to California Institute of Technology or its agents the non-exclusive\nlicense to archive and make accessible, under the conditions specified below,\nmy thesis, dissertation, or project report in whole or in part in all forms of media, now or hereafter known. I retain all other ownership rights to the copyright of the thesis, dissertation or project report. I also retain the right to use in future works (such as articles or books) all or part of this thesis, dissertation, or project report.", "resource_type": "thesis", "pub_year": "1956", "author_list": "Lovering, John Francis", "advisor_list": "Brown, Harrison", "comittee_list": "Unknown, Unknown" }, { "id": "https://thesis.library.caltech.edu/id/eprint/181", "eprint_id": 181, "rev_number": 19, "documents": [ { "id": "/id/document/114473", "doc_id": 114473, "rev_number": 2, "files": [ { "id": "/id/file/351092", "fileid": 351092, "datasetid": "document", "objectid": 114473, "filename": "Marshall_rr_1955.pdf", "mime_type": "application/pdf", "hash": "976e0877a844e7273c86adfde56c6bfb", "hash_type": "MD5", "filesize": 4825322, "mtime": "2021-02-06 01:57:44", "url": "/181/3/Marshall_rr_1955.pdf" } ], "eprint_id": 181, "pos": 3, "placement": 3, "mime_type": "application/pdf", "format": "application/pdf", "language": "en", "security": "public", "license": "other", "main": "Marshall_rr_1955.pdf", "media_duration": "0", "media_aspect_ratio": "0", "media_sample_start": "0", "media_sample_stop": "0", "content": "final" }, { "id": "/id/document/119737", "doc_id": 119737, "rev_number": 1, "files": [ { "id": "/id/file/365103", "fileid": 365103, "datasetid": "document", "objectid": 119737, "filename": "indexcodes.txt", "mime_type": "text/plain", "hash": "5746afca3346a364e154d0cd734a81cc", "hash_type": "MD5", "filesize": 30056, "mtime": "2021-06-23 20:17:09", "url": "/181/4/indexcodes.txt" } ], "eprint_id": 181, "pos": 4, "placement": 4, "mime_type": "text/plain", "format": "other", "format_desc": "Generate index codes conversion from application/pdf to indexcodes", "language": "en", "security": "public", "license": "other", "main": "indexcodes.txt", "media_duration": "0", "media_aspect_ratio": "0", "media_sample_start": "0", "media_sample_stop": "0", "relation": { "items": [ { "type": "http://eprints.org/relation/isVersionOf", "uri": "/id/document/114473" }, { "type": "http://eprints.org/relation/isVolatileVersionOf", "uri": "/id/document/114473" }, { "type": "http://eprints.org/relation/isIndexCodesVersionOf", "uri": "/id/document/114473" } ] } } ], "eprint_status": "archive", "userid": 2, "dir": "disk0/00/00/01/81", "datestamp": "2004-01-16", "lastmod": "2023-07-06 18:10:34", "status_changed": "2009-09-25 01:30:18", "type": "thesis", "metadata_visibility": "show", "creators": { "items": [ { "id": "Marshall-Royal-Richard", "name": { "family": "Marshall", "given": "Royal Richard" }, "show_email": "NO" } ] }, "title": "I. The Rate of Recombination of Iodine Atoms. II. Some Studies of the Trace Quantities of Lead, Uranium, and Thorium in Marine Carbonate Skeletons", "ispublished": "unpub", "full_text_status": "public", "keywords": "(Chemistry and Geology)", "abstract": "PART I.
\r\n\r\nThe rate constants for the homogeneous recombination of iodine atoms in the gas phase I+I+M \u2192 d[I\u2082]/d[I\u2082][M], have been measured for the gases M=A, n\u0332e\u0332o\u0332-C\u2085H\u2081\u2082 and n\u0332-C\u2085H\u2081\u2082 at room temperature. The rate constants are 4.2 (\u00b10.4) x 10\u2079, 58 (\u00b14) x 10\u2079, and 65 (\u00b16) x 10\u2079 liter\u00b2mole\u207b\u00b2sec\u207b\u00b9, respectively. In these experiments and those with iodine solutions, a short, intense pulse of light from a flash lamp dissociated 1-10% of the iodine molecules in a reaction cell. The photoelectric cell response to a light signal modulated with the change in the iodine atom concentration was amplified and used as the vertical deflection input of an oscilloscope. The oscilloscope trace, a direct indication of the subsequent recombination observed during periods from 0.0002 sec after the flash to as long as 0.01 sec, was recorded photographically.
\r\n\r\nThe rate constants for the recombination of iodine atoms in the liquids CCl\u2084 and n\u0332-C\u2087H\u2081\u2086, d[I\u2082]/d[I\u2082], were found to be at room temperature 0.7 (\u00b10.11) x 10\u00b9\u2070 and 2.2 (\u00b10.4) x 10\u00b9\u2070 liter mole\u207b\u00b9sec\u207b\u00b9, respectively. The primary quantum yields in the solutions were found to 0.19 (\u00b10.05) and 0.41 (\u00b10.26), respectively.
\r\n\r\nPART II.
\r\n\r\nA procedure is described for the chemical isolation from carbonates of microgram quantities of lead, uranium, and thorium suitable for mass spectrometric analyses. The concentration of lead in a Jurassic belemnite as well as a Mississippian Spirifer has been found to be less than 1 ppm while for Strombus gigas, a living species of gastropod, the value 0.19\u00b10.04 ppm was found. The uranium concentration in this gastropod was determined as 0.036\u00b10.002 ppm. The isotopic composition of the lead from the Strombus gigas has also been determined and is compared to other analyses of \"common\" lead.
", "date": "1955", "date_type": "degree", "id_number": "CaltechETD:etd-01152004-092735", "refereed": "FALSE", "official_url": "https://resolver.caltech.edu/CaltechETD:etd-01152004-092735", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "collection": "CaltechTHESIS", "reviewer": "Kathy Johnson", "deposited_by": "Imported from ETD-db", "deposited_on": "2004-01-16", "doi": "10.7907/KV4S-PC49", "alt_title": { "items": [ "Rate of Recombination of Iodine Atoms", "Some Studies of the Trace Quantities of Lead, Uranium, and Thorium in Marine Carbonate Skeletons" ] }, "divisions": { "items": [ "div_chem" ] }, "institution": "California Institute of Technology", "thesis_type": "phd", "thesis_advisor": { "items": [ { "id": "Davidson-N-R", "name": { "family": "Davidson", "given": "Norman R." }, "role": "advisor" }, { "id": "Patterson-C-C", "name": { "family": "Patterson", "given": "Clair C." }, "role": "advisor" }, { "id": "Brown-Harrison", "name": { "family": "Brown", "given": "Harrison" }, "role": "advisor" } ] }, "thesis_committee": { "items": [ { "name": { "family": "Unknown", "given": "Unknown" } } ] }, "thesis_degree": "PHD", "thesis_degree_grantor": "California Institute of Technology", "thesis_submitted_date": "2004-01-15", "thesis_defense_date": "1955-01-01", "thesis_approved_date": "2004-01-16", "review_status": "approved", "option_major": { "items": [ "chemistry" ] }, "option_minor": { "items": [ "geol" ] }, "copyright_statement": "I hereby certify that, if appropriate, I have obtained a written permission statement from the owner(s) of each third party copyrighted matter to be included in my thesis, dissertation, or project report, allowing distribution as specified below. I certify that the version I submitted is the same as that approved by my advisory committee.\n\nI hereby grant to California Institute of Technology or its agents the non-exclusive\nlicense to archive and make accessible, under the conditions specified below,\nmy thesis, dissertation, or project report in whole or in part in all forms of media, now or hereafter known. I retain all other ownership rights to the copyright of the thesis, dissertation or project report. I also retain the right to use in future works (such as articles or books) all or part of this thesis, dissertation, or project report.", "resource_type": "thesis", "pub_year": "1955", "author_list": "Marshall, Royal Richard", "advisor_list": "Davidson, Norman R.; Patterson, Clair C.; et el.", "comittee_list": "Unknown, Unknown" } ]