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این 3 تا آدرس در مورد مقاله و کتاب می باشد
لطف می کنید که به صورت کامل قرار دهید
http://www.sciencedirect.com/science/journal/09601481
(Assessment of wind energy potential of two sites in North-East, )
http://www.sciencedirect.com/science/journal/13640321
(Geothermal energy recovery from underground mines )
http://www.sciencedirect.com/science?_ob=RefWorkIndexURL&_idxType=TC&_cdi=44556&_refWorkId=4343&_explode=6548000003&_alpha=&_acct=C000050221&_version=1&_userid=10&md5=369ee92f670cd340e7740930917642fe&refID=6548000003#6548000003
(Part II: Renewable Energy)
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Assessment of wind energy potential of two sites in North-East
The study is used to assess the wind energy potential of Maiduguri and Potiskum, two sites in North-East,
Nigeria. 21 years (1987e2007) monthly mean wind data at 10 m height were assessed from the Nigeria
Meteorological department and subjected to 2-parameter Weibull and other statistical analyzes. The
result showed that average monthly mean wind speed variation for Potiskum ranged from 3.90 to
5.85 m/s, while for Maiduguri, it ranged from 4.35 to 6.33 m/s. Seasonally, data variation between the dry
and wet seasons revealed that, the mean wind speed variation for Potiskum ranged from 4.46 (for dry) to
5.16 m/s (for wet), while for Maiduguri it ranged from 5.10 (dry) to 5.59 m/s (wet). The wind power
density variation based on the Weibull analysis ranged from 102.54 to 300.15 W/m2 for Potiskum and it
ranged from 114.77 to 360.04 W/m2 for Maiduguri respectively. Moreover, Maiduguri was found to be the
better of the sites in terms of monthly and seasonal variation of mean wind speed, but they both can be
suitable for stand alone and medium scale wind power generation.
2010 Elsevier Ltd. All rights reserved
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salam aya kasi in magharo dare?
Remaining innovative without sacrificing stability: an analysis of strategies in the Japanese pharmaceutical industry that enable firms to overcome inertia resulting from successful market penetration of new product development
Authors: Takayama M.; Watanabe C.; Griffy-Brown C.
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Remaining innovative without sacrificing stability: an analysis of strategies in the Japanese pharmaceutical industry that enable firms to overcome inertia resulting from successful market penetration of new product development
Authors: Takayama M.; Watanabe C.; Griffy-Brown C
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Degradation of macrolide antibiotics by ozone: A mechanistic case study with clarithromycin
Abstract
Macrolide antibiotics are widely used (in the order of 1 g per person per year). They pass the body largely unchanged and are also not degraded in wastewater treatment plants. With not too much effort, they may be eliminated from their effluents by ozonation. The macrolide antibiotics have all a dimethylamino group at one of the carbohydrate residues in common. This functional group is the target of the ozone reaction, and clarithromycin has been selected here for a more detailed study. Since only the free amine reacts with ozone, the rate of reaction is pH dependent (at pH 7: k = 4 × 104 M−1 s−1). In analogy to the ozonolysis of trimethylamine, the main reaction is a transfer of an O-atom yielding the N-oxide (identified by HPLC/MS–MS). A minor product (10%, based on formaldehyde yields) is demethylated clarithromycin (identified by HPLC/MS–MS). The dimethylamino group is thought to be essential for the binding of the macrolide antibiotics to their target. As a consequence, chemical changes of this functional group, notably the formation of the N-oxide that is no longer a proton acceptor, inactivates these drugs as assayed by the suppression of the growth of Pseudomonas putida. This is most important for wastewater treatment, as mineralization of clarithromycin by ozone would require 100 times as much ozone.
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Subsoil ridge tillage and lime effects on soil microbial activity, soil pH, erosion, and wheat and pea yield in the Pacific Northwest, USA
http://www.sciencedirect.com/science?_ob=ArticleURL&_udi=B6TC6-48PDD0K-2&_user=2596072&_coverDate=11%2F30%2F2003&_rdoc=1&_fmt=high&_orig=gateway&_origin=gateway&_sort=d&_docanchor=&view=c&_searchStrId=1674792694&_rerunOrigin=scholar.google&_acct=C000057916&_version=1&_urlVersion=0&_userid=2596072&md5=9015598831f54f6057c69885754b38ce&searchtype=a
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Ridge tillage effects on simulated water and heat transport
http://www.sciencedirect.com/science?_ob=ArticleURL&_udi=B6TC6-48YVV6B-28&_user=2596072&_coverDate=11%2F30%2F1990&_rdoc=1&_fmt=high&_orig=gateway&_origin=gateway&_sort=d&_docanchor=&view=c&_searchStrId=1674794236&_rerunOrigin=scholar.google&_acct=C000057916&_version=1&_urlVersion=0&_userid=2596072&md5=c18b0e8992d479a09383d31ac9db9c26&searchtype=a
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Subsoil ridge tillage and lime effects on soil microbial activity, soil pH, erosion, and wheat and pea yield in the Pacific Northwest, USA
http://www.sciencedirect.com/science?_ob=ArticleURL&_udi=B6TC6-48PDD0K-2&_user=2596072&_coverDate=11%2F30%2F2003&_rdoc=1&_fmt=high&_orig=gateway&_origin=gateway&_sort=d&_docanchor=&view=c&_searchStrId=1674792694&_rerunOrigin=scholar.google&_acct=C000057916&_version=1&_urlVersion=0&_userid=2596072&md5=9015598831f54f6057c69885754b38ce&searchtype=a
--------------------------
Ridge tillage effects on simulated water and heat transport
http://www.sciencedirect.com/science?_ob=ArticleURL&_udi=B6TC6-48YVV6B-28&_user=2596072&_coverDate=11%2F30%2F1990&_rdoc=1&_fmt=high&_orig=gateway&_origin=gateway&_sort=d&_docanchor=&view=c&_searchStrId=1674794236&_rerunOrigin=scholar.google&_acct=C000057916&_version=1&_urlVersion=0&_userid=2596072&md5=c18b0e8992d479a09383d31ac9db9c26&searchtype=a
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Effects on soil properties
Ridge tillage effects on simulated water and heat transport ![star, open]( "star, open") J.G. Benjamina, A.D. Blaylocka, H.J. Browna and R.M. Crusea
aDepartment of Agronomy, Iowa State University, Ames, IA 50011, U.S.A.
Accepted 12 October 1989.
Available online 1 July 2003.
Abstract
Ridged soil surface configurations are often used as a management tool to improve the plant root environment. Possible benefits for ridge tillage systems include warmer and dryer seed-zone soil conditions in the spring, better control of wheel-traffic patterns, and better crop residue management for erosion control. This study compared soil physical properties in the plant row, the untracked interrow, and the wheel-tracked interrow positions for a ridge tillage system on three soils. Soil property information was used to model the effects of soil variability and ridge height on subsurface water and heat transport. Simulated water and heat flow in a ridge seemed to be different from that of a flat surface. Taller ridges had a greater influence on water and heat movement than shorter ridges. There seems to be an optimum ridge height for fastest warming and drying. Variable soil properties affected predicted soil temperature distributions less than predicted matric potential distributions. The compacted zone had a lower matric potential deep in the profile and a higher matric potential near the surface than the uncompacted zone.
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Influence of cement type on ITZ porosity and chloride resistance of self-compacting concrete
Andreas Leemann, a, , Roman Losera and Beat Müncha
a Empa, Swiss Federal Laboratories for Materials Testing and Research, Überlandstr. 129, CH-8600 Dübendorf, Switzerland
Received 1 October 2008; revised 10 November 2009; accepted 13 November 2009. Available online 20 November 2009.
Abstract
With the increasing use of self-compacting concrete (SCC) its durability has come into focus. Concerning the microstructure of concrete, the porosity in the interfacial transition zone (ITZ) is regarded as a key feature for permeability and durability. Generally, a combination of cement and mineral admixtures is used for the production of SCC. In the present study, ITZ porosity of four SCC mixtures produced with ordinary Portland cement, Portland limestone cement, slag cement and ordinary Portland cement combined with fly ash is analyzed. Additionally, the chloride migration coefficient is determined. ITZ porosity and width of the SCC mixtures are similar. The substantial differences in the chloride migration coefficients show that the binder type has a stronger influence on permeability than the pore volume in the ITZ.
Keywords: Interfacial transition zone; Permeability; Blended cement; Self-compacting concrete
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, Advances in Engineering Software, 41(2010)22-31.
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for the analysis of symmetric-regular structures, Acta Mechanica, Nos. (3-4), 210(2010) 265-289.
A. Kaveh and B. Alinejad, Graph products with specified domains for configuration processing and formation of the adjacency matrices,
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A. Kaveh and B. Alinejad, New graph products of specified domains for configuration processing, PAMM, No. 1, 9(2010)585-586.
A. Kaveh, M. Nikbakht and H. Rahami, Improved group theoretic method using graphs products, for the analysis of symmetric-regular structures, Acta Mechanica, Nos. (3-4), 210(2010) 265-289
A. Kaveh, H. Rahami and M. Nikbakht, Vibration analysis of regular structures by graphs products: cable networks, Computers and Structures, 88(2010)588-601.
A. Kaveh and H. Fazli, Eigensolution of augmented graph products using shifted inverse iteration method, International Journal for Numerical Methods in Engineering, DOI: 10.1002/nme.2842, 18 Feb. 2010.
A. Kaveh and H. Rahami, Eigenvalues of the adjacency and Laplacian matrices for modified regular structural models, Communications in Numerical Methods in Engineering , DOI: 10.1002/cam.1269, Published online 3 June 2009.
A. Kaveh and H. Fazli, Approximate eigensolution of Laplacian matrices for locally modified graph products using implicitly restarted Lanczos method, Submitted for publication, 2010
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Grid resource discovery based on semantically linked virtual organizations
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