Comprehensive characterization of Napier grass as a feedstock for thermochemical conversion

Study on Napier grass leaf (NGL), stem (NGS) and leaf and stem (NGT) was carried out. Proximate, ultimate and structural analyses were evaluated. Functional groups and crystalline components in the biomass were examined. Pyrolysis study was conducted in a thermogravimetric analyzer under nitrogen atmosphere of 20 mL/min at constant heating rate of 10 K/min. The results reveal that Napier grass biomass has high volatile matter, higher heating value, high carbon content and lower ash, nitrogen and sulfur contents. Structural analysis shows that the biomass has considerable cellulose and lignin contents which are good candidates for good quality bio-oil production. From the pyrolysis study, degradation of extractives, hemicellulose, cellulose and lignin occurred at temperature around 478, 543, 600 and above 600 K, respectively. Kinetics of the process was evaluated using reaction order model. New equations that described the process were developed using the kinetic parameters and data compared with experimental data. The results of the models fit well to the experimental data. The proposed models may be a reliable means for describing thermal decomposition of lignocellulosic biomass under nitrogen atmosphere at constant heating rate.

Pyrolysis of Napier grass in a fixed bed reactor:effect of operating conditions on product yields and characteristic

This study presents a report on pyrolysis of Napier grass stem in a fixed bed reactor. The effects of nitrogen flow (20 to 60 mL/min), and reaction temperature (450 to 650 degrees C) were investigated. Increasing the nitrogen flow from 20 to 30 mL/min increased the bio-oil yield and decreased both bio-char and non-condensable gas. 30 mL/min nitrogen flow resulted in optimum bio-oil yield and was used in the subsequent experiments. Reaction temperatures between 450 and 600 degrees C increased the bio-oil yield, with maximum yield of 32.26 wt% at 600 degrees C and a decrease in the corresponding bio-char and non-condensable gas. At 650 degrees C, reductions in the bio-oil and bio-char yields were recorded while the non-condensable gas increased. Water content of the bio-oil decreased with increasing reaction temperature, while density and viscosity increased. The observed pH and higher heating values were between 2.43 to 2.97, and 25.25 to 28.88 MJ/kg, respectively. GC-MS analysis revealed that the oil was made up of highly oxygenated compounds and requires upgrading. The bio-char and non-condensable gas were characterized, and the effect of reaction temperature on the properties was evaluated. Napier grass represents a good source of renewable energy when all pyrolysis products are efficiently utilized.

Al pueblo mexicano: relacion de las causas que influyeron en los desgraciados sucesos del día 20 de agosto de 1847

Regarding General Valencia's conduct in the battle of Contreras.

Guillermo O. Quinteros. La política del matrimonio. Novios, amantes y familias ante la justicia, Buenos Aires, 1776-1860. Rosario, Prohistoria, 2015, 234 páginas

Reseña crítica de La política del matrimonio. Novios, amantes y familias ante la justicia

Guillermo O. Quinteros. La política del matrimonio. Novios, amantes y familias ante la justicia, Buenos Aires, 1776-1860. Rosario, Prohistoria, 2015, 234 páginas

Reseña crítica de La política del matrimonio. Novios, amantes y familias ante la justicia

Population and Government in Colonial Buenos Aires. An Approach to the Study of the Tensions Generated by Demographic Growth in the City (1740-1776)

The relationship between population and government in the City of Buenos Aires is analyzed, focusing on the tensions generated by the arrival of new individuals, a local elite with great interests in commerce and in charge of community affairs, and Spanish functionaries that progressively adopted the ideals of the Bourbon Dynasty, despite also being implicated in local logics. It interests us to observe the governors’ perspectives with respect to everyday developments in the city, their preoccupations and interests, and how they would vary the mechanisms to which they resorted in order to organize daily life, in the period defined between 1740 and 1776.

Commentary on Foreign Reprints Act 1847

Legislation enabling colonial territories to import unauthorised foreign reprints subject to the payment of an import duty, to be collected for the benefit of British publishers.
The commentary explores the background to the Foreign Reprints Act 1847, and in particular, the differences between the British and colonial markets for literary works, and the introduction of 'responsible government' in the colonies. It also considers the movement in the late 1860s and early 1870s, on the part of the British book trade, to have the legislation repealed, as well as the efforts of the Canadian legislature to replace the import scheme with a system of compulsory licensing, set against the backdrop of increasingly fractious Anglo-Canadian copyright relations. The Canadian demands for compulsory licensing scheme were by and large abandoned, and the 1847 Act remained on the statute books until the passing of the Copyright Act 1911.

Guillermo O. Quinteros. La política del matrimonio. Novios, amantes y familias ante la justicia, Buenos Aires, 1776-1860. Rosario, Prohistoria, 2015, 234 páginas

Reseña crítica de La política del matrimonio. Novios, amantes y familias ante la justicia

Maria-Trost! : ein Marianisches Gebethbuch : mit Morgen-, Abend-, Meß-, Beicht-, Kommunion, Wallfahrts- und anderen Gebethen sammt Litaneyen und Kirchengesängen : zum Andenken an die erste Säkular-Feier der Wallfahrtskirche Maria-Trost bei Gratz im Jahre 1847

von einem Priester des Franziskaner-Ordens

BIO-BIBLIOGRAPHY OF (AS) Benefactors (AS) OF THE COUNTRY AND CITIZENS (AS) 1847-2008 HONOR

Today's society called information society, grows rapidly and undergoes changes in the sources of information under the Information Technology and Communication ("tics"), in this situation it is necessary to develop tools or reference sources that allow the (to) user (a) the accessibility and use of information. It systematized information on the Meritorious Citizen of the Fatherland and Honor that is Costa Rica, since 1847 to 2008, due to its contribution to culture, science, recreation, among others. The overall objective of this research was to make a work print and digital reference, which will collect each of the biographies and works written by (as) Benefactors (as) of the country and citizens (as) of Honor and to facilitate access to information and strengthen outreach conducted by the Library "Victor Manuel Sanabria Martínez" of the Legislature, through its publications, exhibitions and related activities, to publicize its documentary. The variables used for this investigation were:-sources (primary and secondary), Organization of information - tools in various documentation centers and libraries. This was carried out a questionnaire, which was structured in the Excel program, aimed at (as) directors (as) or officers (as) in different libraries and documentation centers, and visits to selected sites for search and selection information. It is important to spread this final graduation in different public and school libraries in the country, since history and culture rescues national, who gave identity to the Costa Rican people. The systematization made by a thematic CD-ROM, provide accessibility to all (as) the (as) citizens (as) who access the Internet through the website of the Legislative Assembly Library and other state institutions wishing through a hyperlink on your "web", to refer the same.

Exporting the racial republic: African colonization, national citizenship, and the transformation of U.S. expansion, 1776-1864

The effort to create a colony of African Americans on the west coast of Africa was one of the most celebrated and influential movements in the United States during the first half of the 19th century. While historians have often viewed African colonization through the lens of domestic anti-slavery politics, colonization grew from an imperial impulse which promised to transform the identities of black colonists and indigenous Africans by helping them to build a democratic nation from the foundation of a settler colony. By proposing that persons of African descent could eventually become self-governing subjects, the liberal framework behind colonization offered the possibility of black citizenship rights, but only within racially homogenous nation-states, which some proponents of colonization imagined might lead to a “United States of Africa.” This dissertation examines how the notion of expanding democratic ideals through the export of racial nationhood was crucial to the appeal of colonization. It reveals how colonization surfaced in several crucial debates about race, citizenship, and empire in the antebellum United States by examining discussions about African Americans’ revolutionary claims to political rights, the bounds of US territorial expansion, the removal of native populations in North America, and the racialization of national citizenship, both at home and abroad. By examining African colonization from these perspectives, this dissertation argues that the United States’ efforts to construct a liberal democracy defined by white racial identity were directly connected to the nation’s emerging identity as a defender and exporter of political liberty throughout the world.