Federal Register Recent Federal Regulation Documents - Justia Regulation Tracker - Justia Regulations Tracker https://regulations.justia.com/regulations/fedreg/agencies/department-of-justice/2017/01?limit=200&registers=between&min-day=1&max-day=31&mode=atom 2020-10-22T23:39:55-07:00 Justia Inc https://www.justia.com/ Justia Regulations Tracker https://regulations.justia.com/images/justiafedregulations.gif Copyright 2011 Justia Inc https://regulations.justia.com/regulations/fedreg/2017/01/31/2017-02026.html Notice - United States of America v. Duke Energy Corporation; Proposed Final Judgment and Competitive Impact Statement 2017-01-31T00:00:00-08:00 2017-01-31T00:00:00-08:00 2017-02026 Notice https://www.gpo.gov/fdsys/pkg/FR-2017-01-31/pdf/2017-02026.pdf https://regulations.justia.com/regulations/fedreg/2017/01/31/2017-02025.html Notice - United States v. Mitchell P. Rales; Proposed Final Judgment and Competitive Impact Statement 2017-01-31T00:00:00-08:00 2017-01-31T00:00:00-08:00 2017-02025 Notice https://www.gpo.gov/fdsys/pkg/FR-2017-01-31/pdf/2017-02025.pdf https://regulations.justia.com/regulations/fedreg/2017/01/31/2017-02024.html Notice - United States v. Ahmet H. Okumus; Proposed Final Judgment and Competitive Impact Statement 2017-01-31T00:00:00-08:00 2017-01-31T00:00:00-08:00 2017-02024 Notice https://www.gpo.gov/fdsys/pkg/FR-2017-01-31/pdf/2017-02024.pdf https://regulations.justia.com/regulations/fedreg/2017/01/31/2017-02023.html Notice - Notice Pursuant to the National Cooperative Research and Production Act of 1993-Integrated Photonics Institute for Manufacturing Innovation Operating Under the Name of the American Institute for Manufacturing Integrated Photonics 2017-01-31T00:00:00-08:00 2017-01-31T00:00:00-08:00 2017-02023 Notice https://www.gpo.gov/fdsys/pkg/FR-2017-01-31/pdf/2017-02023.pdf https://regulations.justia.com/regulations/fedreg/2017/01/31/2017-02020.html Notice - Notice Pursuant to the National Cooperative Research and Production Act of 1993-R Consortium, Inc. 2017-01-31T00:00:00-08:00 2017-01-31T00:00:00-08:00 2017-02020 Notice https://www.gpo.gov/fdsys/pkg/FR-2017-01-31/pdf/2017-02020.pdf https://regulations.justia.com/regulations/fedreg/2017/01/31/2017-02019.html Notice - Notice Pursuant to the National Cooperative Research and Production Act of 1993-FD.IO Project, Inc. 2017-01-31T00:00:00-08:00 2017-01-31T00:00:00-08:00 2017-02019 Notice https://www.gpo.gov/fdsys/pkg/FR-2017-01-31/pdf/2017-02019.pdf https://regulations.justia.com/regulations/fedreg/2017/01/31/2017-02016.html Notice - Antitrust Division 2017-01-31T00:00:00-08:00 2017-01-31T00:00:00-08:00 2017-02016 Notice https://www.gpo.gov/fdsys/pkg/FR-2017-01-31/pdf/2017-02016.pdf https://regulations.justia.com/regulations/fedreg/2017/01/27/2017-01848.html Notice - Notice of Lodging of Proposed Consent Decree Under the Clean Water Act 2017-01-27T00:00:00-08:00 2017-01-27T00:00:00-08:00 2017-01848 Notice https://www.gpo.gov/fdsys/pkg/FR-2017-01-27/pdf/2017-01848.pdf https://regulations.justia.com/regulations/fedreg/2017/01/27/2017-01517.html Rule - Schedules of Controlled Substances: Extension of Temporary Placement of THJ-2201, AB-PINACA and AB-CHMINACA in Schedule I of the Controlled Substances Act 2017-01-27T00:00:00-08:00 2017-01-27T00:00:00-08:00 2017-01517 Rule https://www.gpo.gov/fdsys/pkg/FR-2017-01-27/pdf/2017-01517.pdf https://regulations.justia.com/regulations/fedreg/2017/01/27/2017-01514.html Proposed Rule - Schedules of Controlled Substances: Placement of AB-CHMINACA, AB-PINACA and THJ-2201 Into Schedule I 2017-01-27T00:00:00-08:00 2017-01-27T00:00:00-08:00 2017-01514 Proposed Rule https://www.gpo.gov/fdsys/pkg/FR-2017-01-27/pdf/2017-01514.pdf https://regulations.justia.com/regulations/fedreg/2017/01/26/2017-01805.html Notice - Notice of Lodging of Proposed Consent Decree Under the Clean Water Act 2017-01-26T00:00:00-08:00 2017-01-26T00:00:00-08:00 2017-01805 Notice https://www.gpo.gov/fdsys/pkg/FR-2017-01-26/pdf/2017-01805.pdf https://regulations.justia.com/regulations/fedreg/2017/01/26/2017-01715.html Notice - Notice of Lodging of Proposed Consent Decree Under the Comprehensive Environmental Response, Compensation, and Liability Act 2017-01-26T00:00:00-08:00 2017-01-26T00:00:00-08:00 2017-01715 Notice https://www.gpo.gov/fdsys/pkg/FR-2017-01-26/pdf/2017-01715.pdf https://regulations.justia.com/regulations/fedreg/2017/01/25/2017-01698.html Notice - Notice of Lodging of Proposed Consent Decree Under the System Unit Resource Protection Act 2017-01-25T00:00:00-08:00 2017-01-25T00:00:00-08:00 2017-01698 Notice https://www.gpo.gov/fdsys/pkg/FR-2017-01-25/pdf/2017-01698.pdf https://regulations.justia.com/regulations/fedreg/2017/01/25/2017-01690.html Notice - Gentry Reeves Dunlop, M.D.; Decision and Order 2017-01-25T00:00:00-08:00 2017-01-25T00:00:00-08:00 2017-01690 Notice https://www.gpo.gov/fdsys/pkg/FR-2017-01-25/pdf/2017-01690.pdf https://regulations.justia.com/regulations/fedreg/2017/01/25/2017-01688.html Notice - Donald W. Lamoureaux, M.D.; Decision and Order 2017-01-25T00:00:00-08:00 2017-01-25T00:00:00-08:00 2017-01688 Notice https://www.gpo.gov/fdsys/pkg/FR-2017-01-25/pdf/2017-01688.pdf https://regulations.justia.com/regulations/fedreg/2017/01/25/2017-01678.html Notice - Notice of Lodging of Proposed Stipulation of Settlement and Order Under the Clean Air Act 2017-01-25T00:00:00-08:00 2017-01-25T00:00:00-08:00 2017-01678 Notice https://www.gpo.gov/fdsys/pkg/FR-2017-01-25/pdf/2017-01678.pdf https://regulations.justia.com/regulations/fedreg/2017/01/25/2017-01647.html Notice - Notice of Lodging of Proposed Consent Decree Under the Clean Air Act and the Comprehensive Environmental Response, Compensation, and Liability Act 2017-01-25T00:00:00-08:00 2017-01-25T00:00:00-08:00 2017-01647 Notice https://www.gpo.gov/fdsys/pkg/FR-2017-01-25/pdf/2017-01647.pdf https://regulations.justia.com/regulations/fedreg/2017/01/25/2017-01631.html Notice - Agency Information Collection Activities; Proposed eCollection eComments Requested; Extension of a Previously Approved Collection 2017-01-25T00:00:00-08:00 2017-01-25T00:00:00-08:00 2017-01631 Notice https://www.gpo.gov/fdsys/pkg/FR-2017-01-25/pdf/2017-01631.pdf https://regulations.justia.com/regulations/fedreg/2017/01/25/2017-01582.html Notice - Bulk Manufacturer of Controlled Substances Application: Organix, Inc. 2017-01-25T00:00:00-08:00 2017-01-25T00:00:00-08:00 2017-01582 Notice https://www.gpo.gov/fdsys/pkg/FR-2017-01-25/pdf/2017-01582.pdf https://regulations.justia.com/regulations/fedreg/2017/01/25/2017-01571.html Notice - Notice of Lodging of Proposed Consent Decree Under the Clean Water Act 2017-01-25T00:00:00-08:00 2017-01-25T00:00:00-08:00 2017-01571 Notice https://www.gpo.gov/fdsys/pkg/FR-2017-01-25/pdf/2017-01571.pdf https://regulations.justia.com/regulations/fedreg/2017/01/24/2017-01693.html Notice - Sunshine Act Meeting 2017-01-24T00:00:00-08:00 2017-01-24T00:00:00-08:00 2017-01693 Notice https://www.gpo.gov/fdsys/pkg/FR-2017-01-24/pdf/2017-01693.pdf https://regulations.justia.com/regulations/fedreg/2017/01/24/2017-01691.html Notice - Sunshine Act Meeting 2017-01-24T00:00:00-08:00 2017-01-24T00:00:00-08:00 2017-01691 Notice https://www.gpo.gov/fdsys/pkg/FR-2017-01-24/pdf/2017-01691.pdf https://regulations.justia.com/regulations/fedreg/2017/01/24/2017-01570.html Notice - Bureau of Justice Statistics; Agency Information Collection Activities; Proposed eCollection eComments Requested; Extension Without Change, of a Previously Approved Collection Firearm Inquiry Statistics (FIST) Program 2017-01-24T00:00:00-08:00 2017-01-24T00:00:00-08:00 2017-01570 Notice https://www.gpo.gov/fdsys/pkg/FR-2017-01-24/pdf/2017-01570.pdf https://regulations.justia.com/regulations/fedreg/2017/01/24/2017-01565.html Notice - Notice of Lodging of Proposed Consent Decree Under the Comprehensive Environmental Response, Compensation Liability Act (“CERCLA”) 2017-01-24T00:00:00-08:00 2017-01-24T00:00:00-08:00 2017-01565 Notice https://www.gpo.gov/fdsys/pkg/FR-2017-01-24/pdf/2017-01565.pdf https://regulations.justia.com/regulations/fedreg/2017/01/24/2017-01495.html Notice - Agency Information Collection Activities; Proposed eCollection eComments Requested; Extension of a Previously Approved Collection 2017-01-24T00:00:00-08:00 2017-01-24T00:00:00-08:00 2017-01495 Notice https://www.gpo.gov/fdsys/pkg/FR-2017-01-24/pdf/2017-01495.pdf https://regulations.justia.com/regulations/fedreg/2017/01/24/2017-01471.html Notice - Notice of Lodging of Proposed Third Partial Consent Decree Under the Clean Air Act 2017-01-24T00:00:00-08:00 2017-01-24T00:00:00-08:00 2017-01471 Notice https://www.gpo.gov/fdsys/pkg/FR-2017-01-24/pdf/2017-01471.pdf https://regulations.justia.com/regulations/fedreg/2017/01/23/2017-01427.html Notice - Notice of Lodging of Proposed Consent Decree Under the Safe Drinking Water Act 2017-01-23T00:00:00-08:00 2017-01-23T00:00:00-08:00 2017-01427 Notice https://www.gpo.gov/fdsys/pkg/FR-2017-01-23/pdf/2017-01427.pdf https://regulations.justia.com/regulations/fedreg/2017/01/23/2017-01416.html Notice - Notice of Lodging of Proposed Consent Decree Under the Comprehensive Environmental Response, Compensation, and Liability Act 2017-01-23T00:00:00-08:00 2017-01-23T00:00:00-08:00 2017-01416 Notice https://www.gpo.gov/fdsys/pkg/FR-2017-01-23/pdf/2017-01416.pdf https://regulations.justia.com/regulations/fedreg/2017/01/23/2017-01381.html Notice - Judicial Redress Act of 2015; Attorney General Designations 2017-01-23T00:00:00-08:00 2017-01-23T00:00:00-08:00 2017-01381 Notice https://www.gpo.gov/fdsys/pkg/FR-2017-01-23/pdf/2017-01381.pdf https://regulations.justia.com/regulations/fedreg/2017/01/23/2017-01348.html Notice - Notice of Lodging of Proposed Consent Decree Under the Resource Conservation and Recovery Act 2017-01-23T00:00:00-08:00 2017-01-23T00:00:00-08:00 2017-01348 Notice https://www.gpo.gov/fdsys/pkg/FR-2017-01-23/pdf/2017-01348.pdf https://regulations.justia.com/regulations/fedreg/2017/01/23/2017-01305.html Notice - Importer of Controlled Substances Application: Mylan Technologies, Inc. 2017-01-23T00:00:00-08:00 2017-01-23T00:00:00-08:00 2017-01305 Notice https://www.gpo.gov/fdsys/pkg/FR-2017-01-23/pdf/2017-01305.pdf https://regulations.justia.com/regulations/fedreg/2017/01/23/2017-01255.html Notice - Notice of Lodging of Proposed Consent Decree Under the Clean Water Act 2017-01-23T00:00:00-08:00 2017-01-23T00:00:00-08:00 2017-01255 Notice https://www.gpo.gov/fdsys/pkg/FR-2017-01-23/pdf/2017-01255.pdf https://regulations.justia.com/regulations/fedreg/2017/01/17/2017-00902.html Rule - Eliminating Exception to Expedited Removal Authority for Cuban Nationals Arriving by Air 2017-01-17T00:00:00-08:00 2017-01-17T00:00:00-08:00 2017-00902 Rule https://www.gpo.gov/fdsys/pkg/FR-2017-01-17/pdf/2017-00902.pdf https://regulations.justia.com/regulations/fedreg/2017/01/17/2017-00892.html Notice - Notice Pursuant to the National Cooperative Research and Production Act of 1993-UHD Alliance, Inc. 2017-01-17T00:00:00-08:00 2017-01-17T00:00:00-08:00 2017-00892 Notice https://www.gpo.gov/fdsys/pkg/FR-2017-01-17/pdf/2017-00892.pdf https://regulations.justia.com/regulations/fedreg/2017/01/17/2017-00794.html Notice - Agency Information Collection Activities; Proposed eCollection eComments Requested; Revision of a Currently Approved Collection: Office for Victims of Crime Training and Technical Assistance Center-Trafficking Information Management System (TIMS) 2017-01-17T00:00:00-08:00 2017-01-17T00:00:00-08:00 2017-00794 Notice https://www.gpo.gov/fdsys/pkg/FR-2017-01-17/pdf/2017-00794.pdf https://regulations.justia.com/regulations/fedreg/2017/01/17/2017-00740.html Rule - Juvenile Justice and Delinquency Prevention Act Formula Grant Program 2017-01-17T00:00:00-08:00 2017-01-17T00:00:00-08:00 2017-00740 Rule https://www.gpo.gov/fdsys/pkg/FR-2017-01-17/pdf/2017-00740.pdf https://regulations.justia.com/regulations/fedreg/2017/01/13/2017-00718.html Notice - Notice of Lodging of Proposed Consent Decree Under the Comprehensive Environmental Response, Compensation, and Liability Act 2017-01-13T00:00:00-08:00 2017-01-13T00:00:00-08:00 2017-00718 Notice https://www.gpo.gov/fdsys/pkg/FR-2017-01-13/pdf/2017-00718.pdf https://regulations.justia.com/regulations/fedreg/2017/01/13/2017-00712.html Notice - Notice of Lodging of Proposed Consent Decree Under the Comprehensive Environmental Response, Compensation and Liability Act 2017-01-13T00:00:00-08:00 2017-01-13T00:00:00-08:00 2017-00712 Notice https://www.gpo.gov/fdsys/pkg/FR-2017-01-13/pdf/2017-00712.pdf https://regulations.justia.com/regulations/fedreg/2017/01/13/2017-00642.html Notice - Agency Information Collection Activities; Proposed eCollection eComments Requested; [Notice of Firearms Manufactured or Imported (ATF Form 2 (5320.2)] 2017-01-13T00:00:00-08:00 2017-01-13T00:00:00-08:00 2017-00642 Notice https://www.gpo.gov/fdsys/pkg/FR-2017-01-13/pdf/2017-00642.pdf https://regulations.justia.com/regulations/fedreg/2017/01/13/2017-00618.html Notice - Notice of Lodging of Proposed Consent Decree Under The Comprehensive Environmental Response, Compensation, and Liability Act 2017-01-13T00:00:00-08:00 2017-01-13T00:00:00-08:00 2017-00618 Notice https://www.gpo.gov/fdsys/pkg/FR-2017-01-13/pdf/2017-00618.pdf https://regulations.justia.com/regulations/fedreg/2017/01/12/2017-00717.html Notice - Sunshine Act Meeting 2017-01-12T00:00:00-08:00 2017-01-12T00:00:00-08:00 2017-00717 Notice https://www.gpo.gov/fdsys/pkg/FR-2017-01-12/pdf/2017-00717.pdf https://regulations.justia.com/regulations/fedreg/2017/01/12/2017-00489.html Notice - Notice of Lodging of Proposed Consent Decree Under the Comprehensive Environmental Response, Compensation, and Liability Act 2017-01-12T00:00:00-08:00 2017-01-12T00:00:00-08:00 2017-00489 Notice https://www.gpo.gov/fdsys/pkg/FR-2017-01-12/pdf/2017-00489.pdf https://regulations.justia.com/regulations/fedreg/2017/01/11/2017-00363.html Notice - Notice Pursuant to the National Cooperative Research and Production Act of 1993-PXI Systems Alliance, Inc. 2017-01-11T00:00:00-08:00 2017-01-11T00:00:00-08:00 2017-00363 Notice https://www.gpo.gov/fdsys/pkg/FR-2017-01-11/pdf/2017-00363.pdf https://regulations.justia.com/regulations/fedreg/2017/01/11/2017-00356.html Notice - Notice Pursuant to the National Cooperative Research and Production Act of 1993-Interchangeable Virtual Instruments Foundation, Inc. 2017-01-11T00:00:00-08:00 2017-01-11T00:00:00-08:00 2017-00356 Notice https://www.gpo.gov/fdsys/pkg/FR-2017-01-11/pdf/2017-00356.pdf https://regulations.justia.com/regulations/fedreg/2017/01/11/2017-00355.html Notice - Notice Pursuant to the National Cooperative Research and Production Act of 1993-American Society Of Mechanical Engineers 2017-01-11T00:00:00-08:00 2017-01-11T00:00:00-08:00 2017-00355 Notice https://www.gpo.gov/fdsys/pkg/FR-2017-01-11/pdf/2017-00355.pdf https://regulations.justia.com/regulations/fedreg/2017/01/11/2017-00354.html Notice - Notice Pursuant to the National Cooperative Research and Production Act of 1993-ASTM International Standards 2017-01-11T00:00:00-08:00 2017-01-11T00:00:00-08:00 2017-00354 Notice https://www.gpo.gov/fdsys/pkg/FR-2017-01-11/pdf/2017-00354.pdf https://regulations.justia.com/regulations/fedreg/2017/01/11/2017-00353.html Notice - Notice Pursuant to the National Cooperative Research And Production Act of 1993-Cooperative Research Group on Ros-Industrial Consortium-Americas 2017-01-11T00:00:00-08:00 2017-01-11T00:00:00-08:00 2017-00353 Notice https://www.gpo.gov/fdsys/pkg/FR-2017-01-11/pdf/2017-00353.pdf https://regulations.justia.com/regulations/fedreg/2017/01/11/2017-00352.html Notice - Notice Pursuant to the National Cooperative Research and Production Act of 1993-ODPI, Inc. 2017-01-11T00:00:00-08:00 2017-01-11T00:00:00-08:00 2017-00352 Notice https://www.gpo.gov/fdsys/pkg/FR-2017-01-11/pdf/2017-00352.pdf https://regulations.justia.com/regulations/fedreg/2017/01/11/2017-00351.html Notice - Notice Pursuant to the National Cooperative Research and Production Act of 1993-Petroleum Environmental Research Forum Project No. 2014-10, Direct Monitoring of Flare Combustion Efficiency 2017-01-11T00:00:00-08:00 2017-01-11T00:00:00-08:00 2017-00351 Notice https://www.gpo.gov/fdsys/pkg/FR-2017-01-11/pdf/2017-00351.pdf https://regulations.justia.com/regulations/fedreg/2017/01/10/2017-00210.html Notice - National Commission on Forensic Science Extension of the Deadline for the Solicitation of Applications for Additional Statistician Commission Membership 2017-01-10T00:00:00-08:00 2017-01-10T00:00:00-08:00 2017-00210 Notice https://www.gpo.gov/fdsys/pkg/FR-2017-01-10/pdf/2017-00210.pdf https://regulations.justia.com/regulations/fedreg/2017/01/09/C1-2016-30595.html Rule - Schedules of Controlled Substances: Temporary Placement of Six Synthetic Cannabinoids (5F-ADB-, 5F-AMB, 5F-APINACA, ADB-FUBINACA, NDMB-CHMICA and MDMB-FUBINACA) Into Schedule I 2017-01-09T00:00:00-08:00 2017-01-09T00:00:00-08:00 C1-2016-30595 Rule https://www.gpo.gov/fdsys/pkg/FR-2017-01-09/pdf/C1-2016-30595.pdf https://regulations.justia.com/regulations/fedreg/2017/01/09/2017-00275.html Proposed Rule - Schedules of Controlled Substances: Temporary Placement of Six Synthetic Cannabinoids (5F-ADB, 5F-AMB, 5F-APINACA, ADB-FUBINACA, MDMB-CHMICA and MDMB-FUBINACA) Into Schedule I 2017-01-09T00:00:00-08:00 2017-01-09T00:00:00-08:00 2017-00275 Proposed Rule https://www.gpo.gov/fdsys/pkg/FR-2017-01-09/pdf/2017-00275.pdf https://regulations.justia.com/regulations/fedreg/2017/01/09/2017-00110.html Notice - Agency Information Collection Activities; Proposed eCollection eComments Requested; Application for Federal Firearms License (ATF F 7(5310.12)/7 CR (5310.16)) 2017-01-09T00:00:00-08:00 2017-01-09T00:00:00-08:00 2017-00110 Notice https://www.gpo.gov/fdsys/pkg/FR-2017-01-09/pdf/2017-00110.pdf https://regulations.justia.com/regulations/fedreg/2017/01/04/2016-31910.html Notice - Notice Pursuant to the National Cooperative Research and Production Act of 1993-IMS Global Learning Consortium, Inc. 2017-01-04T00:00:00-08:00 2017-01-04T00:00:00-08:00 2016-31910 Notice https://www.gpo.gov/fdsys/pkg/FR-2017-01-04/pdf/2016-31910.pdf https://regulations.justia.com/regulations/fedreg/2017/01/04/2016-31909.html Notice - Notice Pursuant to the National Cooperative Research and Production Act of 1993-Storage Performance Council 2017-01-04T00:00:00-08:00 2017-01-04T00:00:00-08:00 2016-31909 Notice https://www.gpo.gov/fdsys/pkg/FR-2017-01-04/pdf/2016-31909.pdf https://regulations.justia.com/regulations/fedreg/2017/01/04/2016-31908.html Notice - Notice Pursuant to the National Cooperative Research and Production Act of 1993-DVD Copy Control Association 2017-01-04T00:00:00-08:00 2017-01-04T00:00:00-08:00 2016-31908 Notice https://www.gpo.gov/fdsys/pkg/FR-2017-01-04/pdf/2016-31908.pdf https://regulations.justia.com/regulations/fedreg/2017/01/04/2016-31904.html Notice - Notice Pursuant to the National Cooperative Research and Production Act of 1993-Cooperative Research Group on Energy Storage System Evaluation and Safety II 2017-01-04T00:00:00-08:00 2017-01-04T00:00:00-08:00 2016-31904 Notice https://www.gpo.gov/fdsys/pkg/FR-2017-01-04/pdf/2016-31904.pdf https://regulations.justia.com/regulations/fedreg/2017/01/04/2016-31902.html Notice - Notice Pursuant to the National Cooperative Research and Production Act of 1993-National Spectrum Consortium 2017-01-04T00:00:00-08:00 2017-01-04T00:00:00-08:00 2016-31902 Notice https://www.gpo.gov/fdsys/pkg/FR-2017-01-04/pdf/2016-31902.pdf https://regulations.justia.com/regulations/fedreg/2017/01/04/2016-31876.html Notice - Special Technical Committee on Law Enforcement Firearms 2017-01-04T00:00:00-08:00 2017-01-04T00:00:00-08:00 2016-31876 Notice https://www.gpo.gov/fdsys/pkg/FR-2017-01-04/pdf/2016-31876.pdf https://regulations.justia.com/regulations/fedreg/2017/01/04/2016-31508.html Rule - Revision of Department of Justice Freedom of Information Act Regulations 2017-01-04T00:00:00-08:00 2017-01-04T00:00:00-08:00 2016-31508 Rule https://www.gpo.gov/fdsys/pkg/FR-2017-01-04/pdf/2016-31508.pdf