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141.
We study optimal data collection in energy harvesting sensor networks. The sensed data-stream constitutes a sequence of stationary ergodic random variables and, assuming that timely data is valued more, the value of the data is discounted over time such that frequent collection is required to avoid a loss in value. However, unlimited data collection is constrained by both the cost of data collection and the availability of energy. 相似文献
142.
Analysis of argentinated peptide complexes using matrix‐assisted laser desorption/ionization time‐of‐flight mass spectrometry: Peptide = oxytocin,arg8‐vasopressin,bradykinin, bombesin,somatostatin, neurotensin 下载免费PDF全文
143.
Yogesh S. WaghDinesh N. Sawant Kishor P. DhakeKrishna M. Deshmukh Bhalchandra M. Bhanage 《Tetrahedron letters》2011,52(43):5676-5679
Simple methodology for the allylation of various N- and O-pronucleophiles with 1-phenyl-1-propyne as an allylating agent, using PS-TPP-Pd (polymer supported triphenylphosphine palladium) as a highly active heterogeneous recyclable catalyst has been developed. The protocol is applicable for a wide variety of hindered and functionalized aromatic amines, alcohols, and carboxylic acids. The catalyst exhibited remarkable catalytic activity for five consecutive recycles. 相似文献
144.
Stefano Sebastio Kishor S. Trivedi Dazhi Wang Xiaoyan Yin 《European Journal of Operational Research》2014
In this paper, an algorithm for the fast computation of network reliability bounds is proposed. The evaluation of the network reliability is an intractable problem for very large networks, and hence approximate solutions based on reliability bounds have assumed importance. The proposed bounds computation algorithm is based on an efficient BDD representation of the reliability graph model and a novel search technique to find important minpaths/mincuts to quickly reduce the gap between the reliability upper and lower bounds. Furthermore, our algorithm allows the control of the gap between the two bounds by controlling the overall execution time. Therefore, a trade-off between prediction accuracy and computational resources can be easily made in our approach. The numerical results are presented for large real example reliability graphs to show the efficacy of our approach. 相似文献
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146.
P. Srihari J. Shyam Sunder Reddy Dinesh C. Bhunia S. S. Mandal J. S. Yadav 《合成通讯》2013,43(9):1448-1455
Aryl‐propargylic alcohols undergo O‐, S‐, and N‐nucleophilic substitution reactions in the presence of a catalytic amount of PMA‐SiO2. 相似文献
147.
Mallikarjun Gadwala Neetha Kari Narayan Moger Shyam Kumar Vootla 《Applied biochemistry and biotechnology》2013,169(4):1459-1466
The outstanding capability of two-dimensional gel electrophoresis in separating all types of proteins basically depends on the efficiency of sample preparation. Sample preparation is one of the most critical steps in two-dimensional gel electrophoresis. Unfortunately, due to severe solubility, resolution of protein on gel is usually hampered, and thus, analysis remains a difficult task. However, technically several problems are generally encountered during protein extraction and isoelectric focusing. In the present investigation, we emphasized on evaluation and comparison of six different protein solubilization methods intended for resolving and analyzing silkworm hemolymph proteins by two-dimensional gel electrophoresis. Our findings revealed that the buffer composition of 8 M urea, 4 % 3-[(3-cholamidopropyl)dimethylammonio]-1-propanesulfonate, 40 mM Tris base, 65 mM dithiothreitol, and 0.2 % ampholyte can effectively solubilize and yields maximum protein spots. 相似文献
148.
Shyam Babu Singh Kamleshwar Tiwari Pankaj Kumar Verma Madhulika Srivastava Kamla Prasad Tiwari 《Supramolecular chemistry》2013,25(5):255-262
Novel spiro-oxindole derivatives were synthesised by one-pot multicomponent reaction using isatins, urea and 1,3-dicarbonyls. β-Cyclodextrin, an oligosaccharide, catalysed the reaction and can be reused for further reaction after recovery. This developed synthetic route is environmentally benign in which water is used as solvent to produce excellent yields of products. The synthesised compounds were evaluated for their antimicrobial activities against two bacteria and two fungi. All the synthesised spiro-oxindoles exhibit significant antimicrobial activity. 相似文献
149.
150.
Shyam Babu Singh Pankaj Kumar Verma Kamleshwar Tiwari Mandavi Singh Preyas Ankit Shahin Fatma 《合成通讯》2014,44(12):1795-1802
An efficient triphenylphosphine-catalyzed synthesis of β-acetamido carbonyls via multicomponent reaction of aromatic aldehydes, enolizable ketones or β-keto esters, acid chlorides and acetonitrile at room temperature is described. The process is remarkably simple, environmentally benign, and uses Lewis base for the first time in such type of reaction. 相似文献