methanol and hydrogen from biomass for transportation

... Columbus Laboratory) biomass gasifier. The models were used to develop conceptual designs for biomass- to- liquids and biomass- to -hydrogen plants, to size and cost these plants, and to calculate the required ... selling price of liquid fuels and hydrogen produced from biomass. Economics and greenhouse gas emissions were to be compared with more traditional approaches for converting biomass to fuel, such as ... considered suitable for fuels, chemicals and hydrogen. It is clear that further development work is necessary to establish operating limits for most biomass gasification technologies. The majority of past biomass...

Ngày tải lên: 18/03/2014, 02:20

Ngày tải lên: 05/09/2013, 09:38

... that the hydrogen bond from Y1013Â-OH was lost [18]. Based on our results and the information from the structures of HSV1-TK we suggest that the network of hydrogen bonds is disrupted, and this ... an almost 2000-fold decrease in the k cat value for dThd, and a 270-fold decrease for dCyd. The K m value was increased sevenfold for dThd and 49-fold for dCyd. The large decrease in k cat value ... is also affected; when dThd is bound R105 forms a hydrogen bond with E52, thus stabilizing the position and charge of E52, and when dTTP is bound it forms a hydrogen bond with the a-phosphate of...

Ngày tải lên: 19/02/2014, 02:20

... activity, and the data confirm this result with no export detected using either assay system. The K73A and Y154S mutants are active, as expected from previ- ous studies [26] and so too are the D211A and ... evidence for interactions between the TM spans of TatA and TatB, and between the amphipathic regions. Finally, we have re-examined the numerous mutations made previously in TatA, B and C and we ... exhib- its a relatively low TatB signal for unknown reasons. One anomaly is, however, evident with two newly gen- erated TatB mutants, E8Q and L63A: TatA and TatB are formed at typical levels but the...

Ngày tải lên: 19/02/2014, 17:20

... Depletion, and Environmental Issues to total primary U.S. energy demand in the 1990s were about 70% for petroleum and natural gas and 20% for coal. Biomass, hydroelectric power, and nuclear ... liquid, and gaseous fuels that are suitable as substitutes for fossil fuels and their refined products. Biomass is defined as nonfossil, energy-containing forms of carbon and includes all land- and ... The history, status, and future expectations of biomass research, development, and deployment efforts are examined from the standpoint of the role of biomass in our global and national energy...

Ngày tải lên: 16/03/2014, 18:10

... tree. For each verb lemma, associated duration information was collected for episodic and habitual uses of the verb. Summary statis- tics for 483 verb lemmas and their typical habit and episode ... information about common events. For example, (1) and (2) were used to pro- vide information about how long a work event can last: (1) Had work for an hour and 30 mins now going to disneyland ... describes a method for automatically extracting information about typical durations for events from tweets posted to the Twitter microblogging site. Twitter is a rich resource for information about...

Ngày tải lên: 16/03/2014, 20:20

... cap and trade system on U.S. bioenergy and agricultural production. In the Johans- son and Azar model, bioenergy feedstock was available from energy crops grown on cropland and grazing land and ... The potential for using wood for energy and the implications for climate change. In: Sampson, R.N.; Hair, D., eds. Forests and global change: forest management opportunities for mitigating ... perspective and reliance on economic models to quantify demands for and supplies of woody biomass. This report also differs from the others by, when possible, considering woody biomass within...

Ngày tải lên: 18/03/2014, 02:20

Ngày tải lên: 18/03/2014, 20:20

... STRONG PERFORMERS AND SUCCESSFUL REFORMERS IN EDUCATION: LESSONS FROM PISA FOR THE UNITED STATES The Ontario experience 71 ã Education system and context for reform 71 ã Leadership, goals and capacity ... PERFORMERS AND SUCCESSFUL REFORMERS IN EDUCATION: LESSONS FROM PISA FOR THE UNITED STATES â OECD 2011 9 ChaptEr 11 LESSONS FOR THE UNITED STATES 227 Introduction 228 Learning from high-performing ... STRONG PERFORMERS AND SUCCESSFUL REFORMERS IN EDUCATION: LESSONS FROM PISA FOR THE UNITED STATES This chapter examines the United States’ performance in PISA compared with high-performing and rapidly...

Ngày tải lên: 22/03/2014, 16:22

Ngày tải lên: 23/03/2014, 00:20

... implementers and donors, namely the collection and use of strategic information on human resources for health (HRH) for decision mak- ing and performance mo nitoring to achieve the MDG s for maternal and ... to reach MDGs 4 and 5. We also review innovative strategies and lessons learnt from countries that have used data and information to appropriately plan for and monitor HRH performance to accelerate ... deaths. Methods: We collected and analysed cross-nationally comparable data on HRH availability, distribution, roles and functions from new and existing sources, and information from country reviews of...

Ngày tải lên: 18/06/2014, 17:20

... TECHNOLOGY FROM HATCHERIES FOR FOR SUSTAINABLE DEVELOPMENT AND ENVIRONMENTAL POLLUTION CONTROL Le Van Cat, Pham Thi Hong Duc, Le Ngoc Loc Institute of Chemistry. Vietnamese Academy for Science and ... MBBR on synthetic samples and sample taken from production showed the following results: Synthetic samples are characterized by salinity from 10%, 15%, 20%, 25% and 30% and an ammonium concentration ... microorganisms (Nitrosomonas and Nitrobacter), particularly in the presence of salt and at low ammonia concentrations before and after treatment (to satisfy the quality for cultivation). Low nitrification...

Ngày tải lên: 21/06/2014, 05:20

... estimates of (a 1 , a 2 ) from f z 1 (n)andestimatesof(b 1 , b 2 )from f z 2 (n). For comparison purposes, the same noisy signal y(n)is also put through the HAF algorithm [7]. From this algo- rithm, ... frequencies and not time instants as we did here. 3.3. Performance evaluation and comparison In this subsection, we evaluate the statistical performance of the proposed first algorithm and compare ... in signal processing for communications and include system identification, multiuser detection, space-time coding, adaptive filtering and tracking, array processing, and performance analysis. Dr....

Ngày tải lên: 23/06/2014, 01:20

Ngày tải lên: 27/06/2014, 17:20

... valve-regulated leadracid batteries with a performance anticipated in Table 2 are on schedule for development before the end of 1998. The achievement of such a performance will represent a spec- tacular ... foster a central R&D program for all its members to use as a ‘research pool’ to assist their own battery development activities, both for electric vehi- cles and for other applications. In other ... members and thus benefit the industry as a whole. In this respect, European, North American and Pacific Rim members take the most promising outcomes from their respective research programmes and...

Ngày tải lên: 05/07/2014, 20:21

Ngày tải lên: 07/08/2014, 14:20

Ngày tải lên: 09/08/2014, 01:24

Ngày tải lên: 09/08/2014, 03:24

Ngày tải lên: 09/08/2014, 14:20