Self-heating and deicing conductive cement. Experimental study and modeling

This research studies the self-heating produced by the application of an electric current to conductive cement pastes with carbonaceous materials. The main parameters studied were: type and percentage of carbonaceous materials, effect of moisture, electrical resistance, power consumption, maximum temperature reached and its evolution and ice melting kinetics are the main parameters studied. A mathematical model is also proposed, which predicts that the degree of heating is adjustable with the applied voltage. Finally, the results have been applied to ensure that cementitious materials studied are feasible to control ice layers in transportation infrastructures.

Kinetic study and thermal decomposition behavior of viscoelastic memory foam

A systematic investigation of the thermal decomposition of viscoelastic memory foam (VMF) was performed using thermogravimetric analysis (TGA) to obtain the kinetic parameters, and thermogravimetric analysis coupled to Fourier Transformed Infrared Spectrometry (TGA-FTIR) and thermogravimetric analysis coupled to Mass Spectrometry (TGA-MS) to obtain detailed information of evolved products on pyrolysis and oxidative degradations. Two consecutive nth-order reactions were employed to correlate the experimental data from dynamic and isothermal runs performed at three different heating rates (5, 10 and 20 K/min) under an inert atmosphere. On the other hand, for the kinetic study of the oxidative decomposition, the data from combustion (synthetic air) and poor oxygen combustion (N2:O2 = 9:1) runs, at three heating rates and under dynamic and isothermal conditions, were correlated simultaneously. A kinetic model consisting of three consecutive reactions presented a really good correlation in all runs. TGA-FTIR analysis showed that the main gases released during the pyrolysis of VMF were determined as ether and aliphatic hydrocarbons, whereas in combustion apart from the previous gases, aldehydes, amines and CO2 have also been detected as the main gases. These results were confirmed by the TGA-MS.

Notification from William Cutler to the selectmen of Cambridge, Massachusetts, that Dr. Philip Brukowitz and wife were inhabiting his father's house in Cambridge, 1758 April 25

Single page notification addressed to the selectmen of Cambridge, Massachusetts, dated 25 April 1758, in which William Cutler writes that he took into his father’s Cambridge house as tenants Dr. George Philip Brukowitz and his wife, from Woburn, Massachusetts. After the Boston smallpox epidemic of 1721, the town of Cambridge enacted a requirement in 1723 that no resident would receive or admit any non-resident family into their homes for the space of a month without informing the town selectmen. The penalty for failing to do so was twenty shillings.

Algebra, or universal mathematics: revived 1738 with notes and additions : manuscript, [after 1738]

Instructional book in algebra with exercises.

Hādhā kitāb Baḥr al-javāhir

[ʻAbd al-Vahāb ibn Muḥammad Amīn al-Shāhshahānī].

Research and teaching the European Union in Latin America. Jean Monnet/Robert Schuman Paper Series Special, December 2012

NOTE: there is an appendix to this document on the Archive at ei.pitt.edu/29784/ From the Introduction. The tasks of research, teaching and public opinion outreach activities on the European Union in the Latin American subcontinent2 are propelled by two principal motivations. In the first place, interest on the EU originates from the historical proximity between Europe and Latin America. There are no other two regions in the world with a deeper mutual affinity than the one existing between Europe and the conglomerate composed by Latin America and the Caribbean. Only the intimate relationship forged by the United States with the Europe continent is perhaps stronger, and even more special with the United Kingdom.

Expeditionary logistics : --a strategic plan for Navy and Marine Corps 21st century logistics.

Mode of access: Internet.

Primitive culture: researches into the development of mythology, philosophy, religion, art, and custom,

Mode of access: Internet.