In Escherichia coli, the first enzyme of the diaminopimelate and lysine pathway is dihydrodipicolinate synthetase, which is feedback-inhibited by lysine and encoded by the dapA gene. The location of the dapA gene on the bacterial chromosome has been determined accurately with respect to the neighboring purC and dapE genes. The complete nucleotide sequence and the transcriptional start of the da...

The nanocomposites of poly (Acryl amide-co-Acrylic acid) with different contents of NaAzeolite were prepared using ammonium persulfate as an initiator and N, N′-methylenebisacrylamide as the crosslinker. The morphology was characterized by SEM and the structure ofnanocomposite materials was studied with XRD and FT-IR that showed the interaction betweenporous materials and poly (AAm-co-Aac). The...

In the present study, activated bleaching earth was used as clay adsorbent for an investigation of the adsorbability and adsorption kinetics of acid dyes (i.e., acid orange 51, acid blue 9, and acid orange 10) with three different molecular sizes from aqueous solution at 25 degrees C in a batch adsorber. The rate of adsorption has been investigated under the most important process parameters (i...

Penicillic acid, a secondary metabolite first isolated from Penicillium puberuluml, has since been shown to be produced by a variety of fungi. The compound possesses antimicrobial activity2,3, is toxic to mammals4 , and has proved carcinogenic to rats5• KURTZMAN AND CIEGLER6 found that in blue-eye-diseased com caused by Penicillium martensii, large quantities of penicillic acid are produced whe...

PROCEDURES The following have been used with success: haematoxylin and eosin, Perls's reaction for ferric iron, the periodic acid-Schiff reaction for carbohydrates, the alcian blue method for acid mucopolysaccharides, the Feulgen reaction for desoxyribonucleic acid, the periodic acid-hexamine silver method, Luxol fast blue for myelin, solochrome cyanine as a general stain, Heidenhain's iron hae...

Targeted therapies that suppress B cell receptor (BCR) signaling have emerged as promising agents in autoimmune disease and B cell malignancies. Bruton's tyrosine kinase (Btk) plays a crucial role in B cell development and activation through the BCR signaling pathway and represents a new target for diseases characterized by inappropriate B cell activity. N-(3-(5-fluoro-2-(4-(2-methoxyethoxy)phe...

Lactobacillus casei ASCC 292 was grown in the presence of six prebiotics, namely, sorbitol, mannitol, maltodextrin, high-amylose maize, fructooligosaccharide (FOS), and inulin, in order to determine the combination of probiotic and prebiotics that would remove the highest level of cholesterol. A first-order model showed that the combination of L. casei ASCC 292, FOS, and maltodextrin was the mo...

The efficiency and feasibility of organic acids, especially formic and benzoic acids in the feeding of fur animals was investigated in five experiments, where the main emphasis was focused on the metabolism and rate of elimination of these preservatives, in order to assess practical dietary recommendations. Experiments were carried out with mink (Mustela vison), blue foxes (Alopex lagopus) and ...

In this work, we investigated the immobilization of methylene blue in a methyltrimethoxysilane sol-gel ceramic film on a glassy carbon electrode. Up to a certain saturation level, under our conditions, it was found that the methylene blue was tightly held and did not leach out into aqueous solutions, even with continuous immersion for up to 1 month. The electrochemical behavior of the immobiliz...

In this study, SBA-15-PAMAM mesoporous Nano-adsorbent was synthesized, characterized and applied for adsorption of Acid dyes (Acid Blue 62 (AB62) and Acid Red 266 (AR266)) from aqueous Medias. Adsorption of AB62 and AR266 on SBA-15 ordered mesoporous silica, polyamidoamine functionalized SBA-15(SBA-15-PAMAM), has been investigated. In order to assess the synthesized adsorbent constructional, FT...