{"id":{"repo_id":"brazil-uerj","oai_identifier":"oai:pantheon.ufrj.br:11422/2627"},"canonical_url":"https://search.dev.ndltd.org/etd/brazil-uerj/oai:pantheon.ufrj.br:11422/2627","repository":{"repo_id":"brazil-uerj","name":"Brazil UERJ","base_url":"https://pantheon.ufrj.br/oai/request"},"display":{"title":"Estruturas de solos: métodos de observação","abstract":"Concerned with the study of soil structure. This study is divided in two parts. In the first part a literature review on the existing methods for the observation of soil fabric is made. This part is itself sub-divided in two other parts: - indirect methods, - direct methods. In the indirect methods, the use of the principal properties of soil, such as permeability, shear strenght, etc. is shown. In the direct method’s part, the use of optical microscopy, X-Ray diffraction, scanning electron microscopy and transmission electron microscopy is described with special emphasis on the methods for the preparation and handling of the samples. It is concludes that scanning electron microscopy together with optical microscopy is the best method for the study of soil fabric. The second part presents a study of the fabric of six soils using a scanning electron microscope. Examples of some common deffects due to improper sample preparation are also shown.","abstract_html":"Concerned with the study of soil structure. This study is divided in two parts. In the first part a literature review on the existing methods for the observation of soil fabric is made. This part is itself sub-divided in two other parts: - indirect methods, - direct methods. In the indirect methods, the use of the principal properties of soil, such as permeability, shear strenght, etc. is shown. In the direct method’s part, the use of optical microscopy, X-Ray diffraction, scanning electron microscopy and transmission electron microscopy is described with special emphasis on the methods for the preparation and handling of the samples. It is concludes that scanning electron microscopy together with optical microscopy is the best method for the study of soil fabric. The second part presents a study of the fabric of six soils using a scanning electron microscope. Examples of some common deffects due to improper sample preparation are also shown.","abstract_has_math":false,"creators":["Alvarenga, Mário Márcio"],"institution":"Universidade Federal do Rio de Janeiro","degree_name":null,"degree_level":null,"degree_discipline":null,"degree_department":null,"school":null,"contributors":[],"advisors":["Medina, Jacques de"],"committee_chairs":[],"committee_members":[],"year":1974,"date_issued":"1974-12","date_published":"1974-12","updated_at":"2026-07-24T01:15:49Z","subjects":["Solos","Geotêxteis"],"languages":["por"],"rights":["Acesso Aberto"],"rights_urls":[],"identifier_entries":[]},"links":{"outbound_url":"http://hdl.handle.net/11422/2627","outbound_label":"Handle","outbound_source":"dc:identifier.uri"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor.advisor","label":"Advisor","values":["Medina, Jacques de"]},{"key":"dc:creator","label":"Author","values":["Alvarenga, Mário Márcio"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date.accessioned","label":"Dc Date Accessioned","values":["2017-08-11T12:25:01Z"]},{"key":"dc:date.available","label":"Dc Date Available","values":["2026-05-16T03:03:41Z"]},{"key":"dc:date.issued","label":"Date","values":["1974-12"]},{"key":"dc:publisher","label":"Institution","values":["Universidade Federal do Rio de Janeiro"]},{"key":"dc:publisher.department","label":"Dc Publisher Department","values":["Instituto Alberto Luiz Coimbra de Pós-Graduação e Pesquisa de Engenharia"]},{"key":"dc:type","label":"Dc Type","values":["Dissertação"]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["Solos","Geotêxteis"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language","label":"Dc Language","values":["por"]},{"key":"dc:rights","label":"Dc Rights","values":["Acesso Aberto"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier.uri","label":"Identifier URI","values":["http://hdl.handle.net/11422/2627"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description.abstract","label":"Abstract","values":["Concerned with the study of soil structure. This study is divided in two parts. In the first part a literature review on the existing methods for the observation of soil fabric is made. This part is itself sub-divided in two other parts: - indirect methods, - direct methods. In the indirect methods, the use of the principal properties of soil, such as permeability, shear strenght, etc. is shown. In the direct method’s part, the use of optical microscopy, X-Ray diffraction, scanning electron microscopy and transmission electron microscopy is described with special emphasis on the methods for the preparation and handling of the samples. It is concludes that scanning electron microscopy together with optical microscopy is the best method for the study of soil fabric. The second part presents a study of the fabric of six soils using a scanning electron microscope. Examples of some common deffects due to improper sample preparation are also shown."]},{"key":"dc:title","label":"Title","values":["Estruturas de solos: métodos de observação"]}]}],"canonical_facts":{"dc:contributor.advisor":["Medina, Jacques de"],"dc:creator":["Alvarenga, Mário Márcio"],"dc:date.accessioned":["2017-08-11T12:25:01Z"],"dc:date.available":["2026-05-16T03:03:41Z"],"dc:date.issued":["1974-12"],"dc:description.abstract":["Concerned with the study of soil structure. This study is divided in two parts. In the first part a literature review on the existing methods for the observation of soil fabric is made. This part is itself sub-divided in two other parts: - indirect methods, - direct methods. In the indirect methods, the use of the principal properties of soil, such as permeability, shear strenght, etc. is shown. In the direct method’s part, the use of optical microscopy, X-Ray diffraction, scanning electron microscopy and transmission electron microscopy is described with special emphasis on the methods for the preparation and handling of the samples. It is concludes that scanning electron microscopy together with optical microscopy is the best method for the study of soil fabric. The second part presents a study of the fabric of six soils using a scanning electron microscope. Examples of some common deffects due to improper sample preparation are also shown."],"dc:identifier.uri":["http://hdl.handle.net/11422/2627"],"dc:language":["por"],"dc:publisher":["Universidade Federal do Rio de Janeiro"],"dc:publisher.department":["Instituto Alberto Luiz Coimbra de Pós-Graduação e Pesquisa de Engenharia"],"dc:rights":["Acesso Aberto"],"dc:subject":["Solos","Geotêxteis"],"dc:title":["Estruturas de solos: métodos de observação"],"dc:type":["Dissertação"]},"updated_at":"2026-07-24T01:15:49Z"}