Substitutability and Competition in the Dixit-Stiglitz Model The effects of competition on growth are analyzed in the recent literature by comparing economies with the same market structure but different degrees of substitutability. In this note, we show that in a general equilibrium model with monopolistic competition à la DixitStiglitz the effect of substitutability on the allocation of resou...

This research focuses on understanding biosorption process and developing a cost effective technology for treatement of heavy metals-contaminated domastic water. A new biosorbent has been prepared by crushing of neem leaves. The experiments were designed according to Taguchi’s (L16) orthogonal array to optimize experimental runs. In order to assess the biosorption behavior of neem leaves satisf...

The use of foreign direct investment as a channel of international spillovers is by now fairly established in the empirical literature on innovation and growth. It is often argued that subsidiaries of foreign multinational enterprises are a mechanism through which technological know-how flows across borders. For foreign subsidiaries to be channels of international spillovers, these subsidiaries...

We construct a variant of the neoclassical model with endogenous entry and operation decisions by …rms. The model is calibrated to match key features of the distribution of …rms, by age and by size, for the U.S. A higher entry cost leads to a higher degree of misallocation of productive factors across …rms, lower TFP, and lower output. In the data entry costs average 58 percent of per capita GD...

A facile synthesis of the C4-substituted isoquinolines 5a-c and 6a-c is described. Commercially available 4-bromoisoquinoline is converted to the alpha,beta-unsaturated esters 8 and 10 on treatment with the appropriate acrylate ester under Heck reaction conditions. The saturated amides 5a-c were obtained from the reaction of ester 9 with the requisite primary amine. Similarly the unsaturated an...

In this study mix proportion parameters of lightweight foamed concrete (LWFC) are analyzed by using the Taguchi’s experiment design methodology for optimal design. For that purpose, mixtures are designed in L16 orthogonal array with five factors, namely, Microwave Incinerated Rice Husk Ash (MIRHA) contents, water cementitious ratio (w/c), sand cement ratio (s/c), superplasticizier (SP) content,...

We have performed a shape optimization of the disc in an industrial double-eccentric butterfly valve using the effect analysis of design variables to enhance the valve performance. For the optimization, we select three performance quantities such as pressure drop, maximum stress, and mass (weight) as the responses and three dimensions regarding the disc shape as the design variables. Subsequent...

The sarcin-ricin loop (SRL) of 23S rRNA in the large ribosomal subunit is a factor-binding site that is essential for GTP-catalyzed steps in translation, but its precise functional role is thus far unknown. Here, we replaced the 15-nucleotide SRL with a GAAA tetraloop and affinity purified the mutant 50S subunits for functional and structural analysis in vitro. The SRL deletion caused defects i...

The flanking regions and the end of the chloroplast ribosomal unit of Chlamydomonas reinhardii have been sequenced. The upstream region of the ribosomal unit contains three open reading frames coding for 111, 117 and 124 amino acids, respectively. The latter polypeptide is partially related to the ribosomal protein L16 of E. coli. Two of the open reading frames overlap each other and are orient...

The present study was designed to explore the applicability of dolomite dust (a waste from a quarry) as filler in polymer composites. Therefore, fixed carbon fiber reinforced vinyl ester composites with varying proportions (0, 5, 10 and 15 wt.%) are manufactured subsequently evaluated for physicomechanical sliding wear properties. Experimental results indicate that density, void content, impact...