Replacement Value of Two Bangladeshi Varieties of Yellow Corn for Wheat in the Diet of Laying Chicken

Saha, P.K.,Chowdhury, S.D.,Das, S.C.,Saha, S.K. Asian Australasian Association of Animal Productio 1999 Animal Bioscience Vol.12 No.5

Two Bangladeshi varieties of yellow corn-'Barnali' and 'Khaibhutta' were chemically analysed and used in the diet of laying chicken to determine their replacement value for wheat. Both the new varieties of yellow corn were found to be good sources of energy and the CP contents were comparable to wheat. Forty two, 29-week old randomly selected Starcross Brown commercial pullets were assigned to 7 dietary treatments with 6 replicates, each being an experimental unit. Diets were formulated replacing wheat quantitatively by two varieties of yellow corn either 0, 50, 75 or 100 per cent from a wheat based control diet. The production performance of laying hens fed diets formulated with Barnali or Khaibhutta at different dietary levels during an experimental period of 16 weeks was satisfactory and comparable to wheat based diet. Except egg yolk colour, the other internal arid external egg quality characteristics at 8th and 16th weeks of the experiment did not differ significantly. The egg yolk colour improved significantly (p<0.01) by feeding both the new varieties of corn and the degree of pigmentation of yolk increased as the dietary levels of corn increased at the expense of wheat. Considering laying performance, the new varieties of yellow corn, Barnali or Khaibhutta can be used in layer diet as replacement of wheat. Such a replacement would better that wheat-based diet in terms of egg yolk pigmentation.

Antiinflammatory Evaluation of Leucas lavandulaefolia Rees. Extract

Saha, Kakali,Mukherjee, Pulok K.,Das, J.,Mandal, Subhash C.,Saha, B.P.,Pal, M. The Korean Society of Pharmacognosy 1996 Natural Product Sciences Vol.2 No.2

The antiinflammatory activity of the methanol extract of Leucas lavandulaefolia Rees was evaluated on different experimental models of inflammation in rats. The extract has been found to possess significant, inhibitory activity against carrageenin, histamine, serotonin, and dextran induced hind paw oedema in rats. The effect produced by extract was comparable to that of phenylbutazone and a prototype, nonsteroidal antiinflammatory agent.

Molecular Dynamics of Carbon Nanotubes Deposited on a Silicon Surface via Collision: Temperature Dependence

Saha, Leton C.,Mian, Shabeer A.,Kim, Hyo-Jeong,Saha, Joyanta K.,Matin, Mohammad A.,Jang, Joon-Kyung Korean Chemical Society 2011 Bulletin of the Korean Chemical Society Vol.32 No.2

We investigated how temperature influences the structural and energetic dynamics of carbon nanotubes (CNTs) undergoing a high-speed impact with a Si (110) surface. By performing molecular dynamics simulations in the temperature range of 100 - 300 K, we found that a low temperature CNT ends up with a higher vibrational energy after collision than a high temperature CNT. The vibrational temperature of CNT increases by increasing the surface temperature. Overall, the structural and energy relaxation of low temperature CNTs are faster than those of high temperature CNTs.

Habitat complexity reduces prey vulnerability: An experimental analysis using aquatic insect predators and immature dipteran prey

Nabaneeta Saha,Goutam K. Saha,Gautam Aditya 한국응용곤충학회 2009 Journal of Asia-Pacific Entomology Vol.12 No.4

The effects of alternative prey and structural complexity of habitat on the selection of mosquito larvae by aquatic insect predators were evaluated in the laboratory. The water bugs Anisops bouvieri, Diplonychus (=Sphaerodema) rusticus, and D. annulatus, and the odonate nymphs, Ceriagrion coromandelianum and Brachydiplax chalybea chalybea, selected mosquito larvae based on their abundance relative to chironomid larvae and on the levels of habitat complexity. The effect of one prey species on the other was asymmetrical, as indicated through prey selectivity values. Compared to open habitat, the presence of macrophytes reduced the vulnerability of mosquito larvae while the effect was reverse in the presence of sediments. When both sediment and macrophytes were present in habitats, all the predators except D. annulatus consumed more mosquito larvae than chironomid larvae. The clearance rate, an indicator of predatory efficiency, varied among the predator species and habitat types. The results suggest that the outcome of the interactions between insect predators and mosquito immatures was context-dependent and that it was mediated by the presence of alternative controphic species and the habitat complexity. The effects of alternative prey and structural complexity of habitat on the selection of mosquito larvae by aquatic insect predators were evaluated in the laboratory. The water bugs Anisops bouvieri, Diplonychus (=Sphaerodema) rusticus, and D. annulatus, and the odonate nymphs, Ceriagrion coromandelianum and Brachydiplax chalybea chalybea, selected mosquito larvae based on their abundance relative to chironomid larvae and on the levels of habitat complexity. The effect of one prey species on the other was asymmetrical, as indicated through prey selectivity values. Compared to open habitat, the presence of macrophytes reduced the vulnerability of mosquito larvae while the effect was reverse in the presence of sediments. When both sediment and macrophytes were present in habitats, all the predators except D. annulatus consumed more mosquito larvae than chironomid larvae. The clearance rate, an indicator of predatory efficiency, varied among the predator species and habitat types. The results suggest that the outcome of the interactions between insect predators and mosquito immatures was context-dependent and that it was mediated by the presence of alternative controphic species and the habitat complexity.

Molecular Dynamics of Carbon Nanotubes Deposited on a Silicon Surface via Collision: Temperature Dependence

Leton C. Saha,Shabeer A. Mian,김효정,Mohammad A. Matin,Joyanta K. Saha,장준경 대한화학회 2011 Bulletin of the Korean Chemical Society Vol.32 No.2

We investigated how temperature influences the structural and energetic dynamics of carbon nanotubes (CNTs) undergoing a high-speed impact with a Si (110) surface. By performing molecular dynamics simulations in the temperature range of 100 - 300 K, we found that a low temperature CNT ends up with a higher vibrational energy after collision than a high temperature CNT. The vibrational temperature of CNT increases by increasing the surface temperature. Overall, the structural and energy relaxation of low temperature CNTs are faster than those of high temperature CNTs.

Prognostic role of EGR1 in breast cancer: a systematic review

( Subbroto Kumar Saha ),( S. M. Riazul Islam ),( Tripti Saha ),( Afsana Nishat ),( Polash Kumar Biswas ),( Minchan Gil ),( Lewis Nkenyereye ),( Shaker El-sappagh ),( Saiful Islam ),( Ssang-goo Cho ) 생화학분자생물학회 2021 BMB Reports Vol.54 No.10

EGR1 (early growth response 1) is dysregulated in many cancers and exhibits both tumor suppressor and promoter activities, making it an appealing target for cancer therapy. Here, we used a systematic multi-omics analysis to review the expression of EGR1 and its role in regulating clinical outcomes in breast cancer (BC). EGR1 expression, its promoter methylation, and protein expression pattern were assessed using various publicly available tools. COSMIC-based somatic mutations and cBioPortal-based copy number alterations were analyzed, and the prognostic roles of EGR1 in BC were determined using Prognoscan and Kaplan-Meier Plotter. We also used bc-GenEx-Miner to investigate the EGR1 co-expression profile. EGR1 was more often downregulated in BC tissues than in normal breast tissue, and its knockdown was positively correlated with poor survival. Low EGR1 expression levels were also associated with increased risk of ER+, PR+, and HER2- BCs. High positive correlations were observed among EGR1, DUSP1, FOS, FOSB, CYR61, and JUN mRNA expression in BC tissue. This systematic review suggested that EGR1 expression may serve as a prognostic marker for BC patients and that clinicopathological parameters influence its prognostic utility. In addition to EGR1, DUSP1, FOS, FOSB, CYR61, and JUN can jointly be considered prognostic indicators for BC. [BMB Reports 2021; 54(10): 497-504]

Micellar Catalysis on 1,10-Phenanthroline Promoted Chromic Acid Oxidation of Ethane-1,2-diol in Aqueous Media at Room Temperature

Ghosh, Sumanta K.,Saha, Rumpa,Ghosh, Aniruddha,Basu, Ankita,Mukherjee, Kakali,Saha, Indrajit,Saha, Bidyut Korean Chemical Society 2012 대한화학회지 Vol.56 No.6

Under pseudo-first order conditions, the monomeric species of Cr(VI) was found to be kinetically active in the absence of phenanthroline (phen) whereas in the phen-promoted path, the Cr(VI)-phen complex undergoes a nucleophilic attack by etane-1,2-diol to form a ternary complex which subsequently experience a redox decomposition leading to hydroxy ethanal and Cr(III)-phen complex. The effect of the cationic surfactant (CPC), anionic surfactant (SDS) and neutral surfactant (TX-100) on the unpromoted and phen-promoted path have been studied. Micellar effects have been explained by considering the preferential partitioning of reactants between the micellar and aqueous phase. Combination of TX-100 and phenanthroline will be the ideal for chromic acid oxidation of ethane-1,2-diol in aqueous media.

An in vivo study comparing efficacy of 0.25% and 0.5% bupivacaine in infraorbital nerve block for postoperative analgesia

Saha, Aditi,Shah, Sonal,Waknis, Pushkar,Aher, Sharvika,Bhujbal, Prathamesh,Vaswani, Vibha The Korean Dental Society of Anesthsiology 2019 Journal of Dental Anesthesia and Pain Medicine Vol.19 No.4

Background: Pain is an unpleasant sensation ranging from mild localized discomfort to agony and is one of the most commonly experienced symptoms in oral surgery. Usually, local anesthetic agents and analgesics are used for pain control in oral surgical procedures. Local anesthetic agents including lignocaine and bupivacaine are routinely used in varying concentrations. The present study was designed to evaluate and compare the efficacy of 0.25% and 0.5% bupivacaine for postoperative analgesia in infraorbital nerve block. Methods: Forty-one patients undergoing bilateral maxillary orthodontic extraction received 0.5% bupivacaine (n = 41) on one side and 0.25% bupivacaine (n = 41) on the other side at an interval of 7 d. The parameters evaluated for both the bupivacaine concentrations were onset of action, pain during procedure (visual analog scale score [VAS]), and duration of action. The results were noted, tabulated, and analyzed using the Wilcoxon signed rank test. Results: The onset of action of 0.5% bupivacaine was quicker than that of 0.25% bupivacaine, but the difference was not statistically significant (P = 0.306). No significant difference was found between the solutions for VAS scores (P = 0.221) scores and duration of action (P = 0.662). Conclusion: There was no significant difference between 0.25% bupivacaine and 0.5% bupivacaine in terms of onset of action, pain during procedure, and duration of action. The use of 0.25% bupivacaine is recommended.

Self-organized honeycomb-like nanoporous oxide layer for corrosion protection of type 304 stainless steel in an artificial seawater medium

Saha, Sourav Kr.,Park, Yang Jeong,Kim, Jung Woo,Cho, Sung Oh Elsevier 2019 Journal of molecular liquids Vol.296 No.-

<P><B>Abstract</B></P> <P>A new passivation technology for growing a self-organized nanoporous oxide layer with a honeycomb morphology on Type 304 stainless steel is proposed. FESEM, cross-sectional EDX and XRD are employed to evaluate the morphology, composition and crystal structure of the developed anodic film. Cross-sectional EDX analysis reveals that the nanoporous oxide layer contains a significant amount of fluoride species, which becomes negligible after successive annealing in air at 773 K for 2 h. XRD indicates that the amorphous nanoporous oxide layer is converted to a crystalline magnetite phase (Fe<SUB>3</SUB>O<SUB>4</SUB>) after annealing. Electrochemical analysis such as potentiodynamic polarization and electrochemical impedance spectroscopy reveals stainless steel with a thermally treated nanoporous oxide layer has improved corrosion resistance in an artificial seawater medium. FESEM analyses are employed to evaluate the stability and microscopic changes in the morphologies of the nanoporous oxide layer after prolonged immersion in the artificial seawater medium. The key factors and corrosion inhibition mechanism by the nanoporous oxide layer are also discussed.</P> <P><B>Highlights</B></P> <P> <UL> <LI> Self-organized nanoporous oxide layer has been developed by one step anodization. </LI> <LI> XRD reveals crystalline magnetite phase (Fe<SUB>3</SUB>O<SUB>4</SUB>) dominant after successive annealing. </LI> <LI> Stable and compact thermal oxide has formed beneath the nanoporous oxide layer. </LI> <LI> Thermally treated nanoporous oxide layer reduces corrosion rate of stainless steel. </LI> <LI> Oxide layer hindered the penetration of corrosive ions towards metal surface atoms. </LI> </UL> </P> <P><B>Graphical abstract</B></P> <P>[DISPLAY OMISSION]</P>

N-H and S-H insertions over Cu(I)-zeolites as heterogeneous catalysts

Saha, P.,Jeon, H.,Mishra, P.K.,Rhee, H.W.,Kwak, J.H. Elsevier 2016 Journal of molecular catalysis Chemical Vol.417 No.-

<P>N-H and S-H insertion reactions of a-diazoesters into amines and thiols were conducted using various Cu(I)-zeolites, such as zeolite Y, Y USY, ZSM-5, and beta. All the Cu(I)-zeolites successfully catalyzed N-H insertion reactions with high product yields (70-82%) in aqueous solution at room temperature. Interestingly, Cu(l)-USY (Si/Al = 30) showed better activity for both N-H and S-H insertion reactions than Cu(I)-Y (Si/Al= 2.6), even though they have the same structure and the same +1 oxidation state for Cu. X-ray diffraction, transmission electron microscopy, and X-ray photoemission spectroscopy analysis of the fresh and used catalysts revealed that no noticeable change in the zeolite structure, oxidation state of Cu, or sintering of Cu occurred during the reactions. Furthermore, after being recycled four times, the catalysts showed only minor activity decreases, exhibiting conversion rates 70-80% of those of the fresh catalysts, demonstrating their stability under the current reaction conditions. Temperature programmed reduction experiments showed that reduction of Cu+ to Cu degrees occurred at ca. 300 degrees C over Cu(l)-USY, while it occurred at ca. 800 degrees C over Cu(I)-Y. The significantly higher activity of Cu(I)-USY than Cu(l)-Y may be due to the more electrophilic Cu centers on Cu(l)-USY, which is highly favorable for ylide formation, and therefore facilitates N-H and S-H insertions. (C) 2016 Elsevier B.V. All rights reserved.</P>