Screen-Printed Carbon Electrode Modified with Poly-L-histidine Applied to Gold(III) Determination

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Screen-printed carbon electrode modified with poly-L-histidine applied to voltammetric determination of chromium (VI)

The present work reports the use of a screen-printed carbon electrode (SPCE) modified by poly-L-histidine film to determine chromium (VI). Stable films can be formed by direct addition of PH solution 1 % (w/v) on the electrode surface, followed by heating at 80°C during 5 min. Calibration curves can be constructed for Cr(VI) from 1.0 × 10-5 mol L-1 to 7.0 × 10-5 mol L-1 Cr (VI) in acetate buffer pH 4 using a preconcentration step of 60s at open circuit potential. A relative standard deviation of 3.2% was for five determination of 4.0 × 10 -5 mol L-1 Cr (VI). The method was successful applied to determination of Cr(VI) in wastewater samples from a leather dyeing industry. copyright The Electrochemical Society.

Energy harvesting from piezoelectric devices embedded in a 3D printed wing

This thesis work has been carried out at Clarkson University in Potsdam NY, USA and involved the design of a low elongation wing, consisting of parts made by polylactide (PLA) using the fused deposition model (FDM) technology of Rapid Prototyping, then assembled together in a thin aluminum spar. The aim of the research is to evaluate the feasibility of collecting electrical energy by converting mechanical energy from the vibration of the wing flutter. With this aim piezoelectric stripes were glued in the inner part of the wing, as well as on the aluminum spar, as monomorphic configuration. During the phases of the project, particular attention was given to the geometry and the materials used, in order to trigger the flutter for low flow velocity. The CAD software SolidWorks® was used for the design of the wing and then the drawings were sent to the Clarkson machine shop in order to to produce the parts required by the wing assembly. FEM simulations were performed, using software MSC NASTRAN/PATRAN®, to evaluate the stiffness of the whole wing as well as the natural vibration modes of the structure. These data, in a first approximation, were used to predict the flutter speed. Finally, experimental tests in the Clarkson wind tunnel facility were carried out in order to validate the results obtained from FEM analysis. The power collected by the piezoelectrics under flutter condition was addressed by tuning the resistors downstream the electronic circuit of the piezoelectrics.

Revised rules of the Supreme court of the United States : Adopted June 5, 1928. Effective July 1, 1928. Amended June 1, 1931, and May 31, 1932. (The Acts of February 13, 1925, c.229, 43 Stat. 936, January 31, 1928, c. 14, 45 Stat. 54, and April 26, 1928, c. 440, 45 Stat. 466, are printed in an appendix.).

Act of February 13, 1925: An act to amend the Judicial code, and to further define the jurisdiction of the Circuit courts of appeals and of the Supreme court, and for other purposes; Act of January 31, 1928: An act in reference to writs of error; Act of April 26, 1928: An act to amend section 2 of an act entitled "An act in reference to writs of error" (12 pages at end) Eighty pages: "Amendments effective Sept. 1, 1932" inserted. (c.1).

Abstract of the Proceedings of the Boards of Supervisors of the county of Chautauqua : from its organization to the year 1867 inclusive.

"Together with a brief historical sketch of the earlier boards and their members; also, a list of county officers, the vote of the several towns, at each presidential election, etc. compiled ... to 1820 ... by Hon. Elial T. Foote. Compiled from 1820-1867 from the original records, by Lucius Hurlbut ... "

The new Hamlet, intermixed and interwoven with a revised version of Romeo and Juliet; the combination being modernized, rewritten and wrought out on new-discovered lines, as indicated under the light of the higher criticism by Wm. Hawley Smith and the Smith family, farmers. Printed from the original manuscript, with text in full, and as first produced when done in action by the Smiths, their own company, under the haw tree, on their farm, at the ticket, June 17, 1902.

"Done into a book, and bound in boards (no. 2 fencing) by and, at the barn, on the farm, by farmers."

Report of the trial of an action on the case, brought by Silvanus Miller, Esq. : late surrogate of the city and county of New-York, against Mordecai M. Noah, Esq. editor of the National advocate, for an alleged libel. Tried at the City-Hall, in the city of New-York, before the Circuit Court held in the First Judicial District in the state of New-York, by His Honour, Samuel R. Betts, Esq. on Friday, the 12th day of December, 1823 /

Not in Rosenbach, A.S.W. Amer. Jewish bib. and supplements.

Letter from the Governor of the state of Ohio to the President of the Senate transmitting a report of the Joint Committee of both houses of the General Assembly, on the communication of the Auditor of state upon the subject of the proceedings of the Bank of the United States against the officers of state in the United States Circuit court, February 1, 1821 ...

Mode of access: Internet.

A digest of the nisi prius reports : with notes and references, and some original cases, chiefly collected on the western circuit /

Title on spine: Manning's digest.

Tracts relating to Ireland, printed for the Irish Archaeological Society.

v. 1. The circuit of Ireland, by Muircheartach Mac Neill, prince of Aileach / by Cormacan Eigeas; with a translation and notes by John O'Donovan. A brief description of Ireland: 1590 / edited by Aquilla Smith -- v. 2. A treatice of Ireland / by John Dymmok; with notes by Richard Butler. Annales de Monte Fernandi (Annals of Multifernan) / edited by Aquilla Smith. A statute of the fortieth year of King Edward III, enacted in a Parliament held in Kilkenny, A.D. 1367 / with a translation and notes by James Hardiman.

A report of the trail of the cause of John Taylor vs. Edward C. Delavan : prosecuted for alleged libel ; tried at the Albany circuit, April, 1940 ; and Mr. Delavan's correspondence with the ex. committee of the Albany city temperance society, &c.

"This action ... is brought for two publications in the Evening journal, in the month of February, 1835 ... The declaration sets forth that the defendant meant to charge that impure, dirty and filthy water ... had, for years, been carted to the malt-house of the plaintill; ant that he had been guilty of using that water in preparing barley for malt."--p. 45.

Independent offices appropriation bill for 1935. : Hearings before the subcommittee of the Committee on Appropriations, United States Senate, Seventy-third Congress, second session, on H.R. 6663, a bill making appropriations for the executive office and sundry independent executive bureaus, boards, commissions, and offices for the fiscal year ending June 30, 1935, and for other purposes.

Carter Glass, chairman of subcommittee.

Schools in receipt of parliamentary grants. Grants paid to school boards under section 97, elementary education act, 1870. School board accounts and list of loans

Mode of access: Internet.

Independent offices appropriation bill for 1942. : Hearings before the subcommittee of the Committee on Appropriations, United States Senate, Seventy-seventh Congress, first session, on H.R. 2788, a bill making appropriations for the Executive Office and sundry independent executive bureaus, boards, commissions, and offices for the fiscal year ending June 30, 1942, and for other purposes.

Carter Glass, chairman.

Manual of federal appellate procedure; a concise and practical treatise, annotated, on all proceedings necessary to take and perfect appeals, writs of error, petitions for review in bankruptcy, petitions to review orders of Federal trade commission, Interstate commerce commission, Federal reserve boards, decisions of District court in awards of arbitration, and federal tax appeal cases and appeals in admiralty cases ...

"Appendix (p.203-292) Rules of the United States Circuit court of appeals for the Ninth circuit. Revised rules for the Supreme Court of the United States, under act of February 13, 1925, as amended June 7, 1926. Requirements respecting petitions for writs of certiorari under the act of February 13, 1925. Jurisdictional act of February 13, 1925, as amended April 3, 1926. Sections 24 and 25 of the Bankruptcy act, as amended May 28, 1926, effective August 28, 1926."