Readymade garments sector is the largest export earning sectors in Bangladesh. The efficiency of that sector is needed to compete and survive in the competitive global market. For the purpose of identifying the inputs and output variables which are deriving the efficiency of garments factories in Bangladesh, five garment factories have been selected purposively on the basis of availability of data as a sample size. Pearson coefficient correlation has been used to find out significant input variables related with output variable of sales revenue indicating the result that only cost of material and labour has significant impact among four input variables. From the method of CRS input oriented DEA, it is estimated that two garments factory are efficient relative to the(Fawellient factory of the rest three. If it is possible to reduce the excessive used of inputs (percentages) cost of material and labour then rest three inefficient factories would be capable as like as efficient two.

Modi cation of cellulose with silver nanoparticles produces various nanocomposites with signi cantly developed properties. This work aims to prepare a PVA hydrogel modi ed with cellulose/silver nanocomposites having potential applications in various elds including biomedical, antimicrobial inhibition, textile wears, etc. Micro brillated cellulose/silver nanocomposites hydrogels were prepared in the aqueous medium with aid of microwave-assisted heating. Different percentages of nanocomposites were incorporated in PVA hydrogel to enhance the properties of PVA hydrogel. Prepared products were characterized by UV-Visible spectroscopy, FTIR, TGA, XRD, and SEM. The swelling (in water saline, acidic and alkaline solution), tensile, thermal, and antibacterial properties were also examined. The formation of Ag nanoparticles (AgNPs) in the (MFC-Ag) NC was con rmed by XRD and UV-Vis spectra. UV-Vis spectra showed the characteristic peaks of Ag in the UV-Vis spectra at 425 nm. Final products exhibited signi cant porosity and maximum swelling of 519.44%. The thermal stability of hydrogel increased with an increased percentage of (MFC-Ag)NC. Hydrogels exhibited signi cant antimicrobial inhibition against multidrug-resistant microorganisms, including Escherichia coli, Staphylococcus aureus, and Pseudomonas aeruginosa.Due to technical limitations, Scheme 1 is only available as a download in the Supplemental Files section.

The present study was designed with the aim of isolation and identification of Salmonella by con-ventional culture method and their confirmation by polymerase chain reaction (PCR). Antibacte-rial sensitivity study of isolated Salmonella from cattle faeces was also performed. During the study period of July 2017 to June 2018, a total of 200 faecal samples were collected from different government and private farms in Sylhet district of Bangladesh. Out of 200 samples, 24 (12%) were found to be positive for Salmonella by conventional culture methods. Among the twenty four suspected colonies of Salmonella, seventeen were confirmed by biochemical test and same number was detected by PCR estimating a prevalence of 8.5% (17/200). The prevalence was high-er in calves under 1 year of age (16%) compared with older animals (11.25% of 1–2 years; 10% of above 2 years of age) but without statistically significant differences (χ2=4.835, P=0.089). Moreo-ver, in diarrhoeic animals the prevalence was significantly higher (32.14%, χ2=49.414, P<0.01) than in apparently healthy animals (8.72%). The antibiotic sensitivity test showed that highest number of Salmonella isolates were sensitive to ciprofloxacin (100%), gentamicin (100%) and neomycin (100%). On the other hand, significantly high resistance of Salmonella isolates was detected to erythromycin (100%), amoxicillin (100%), cotrimoxazole (81.48%), streptomycin (62.96%) followed by tetracycline (55.56%).

steel booms behaved as expected, based o n the observations of this test program. Further, although the results have not been fully analysed, measured loads on the ice booms are in general agreement with those predicted by this test program.Abstract: For long flood waves propagating over considerable distances on relatively flat slopes, the diffusion wave is an adequate approximation to the St. Venant equations of unsteady channel flow. A relatively simple and robust computational scheme based on this approximation is presented herein. The scheme is based on mass conservation equations for discrete control volumes with unique intervolume flows which ensures overall mass conservation. Simple guidelines for determining the spatial and temporal discretizations are provided. Application to a number of test situations indicates that the scheme offers acceptable accuracy without calibration using only reach-averaged channel geometry and roughness characteristics. The scheme would be especially useful as a subcomponent of a large-scale distributed hydrologic or water resources system model. Resum6: Dans des circonstances normales, pour des faibles nombres de Froude, la vague de diffusion est une approximation adequate des Cquations de St-Venant d'Ccoulement non stationnaire, ce qui necessite des efforts de calcul considerablement moindres par rapport i une solution dynamique complkte. Un arrangement de calcul bask sur cette approximation est ci-dessous dCveloppC et analysC. Cet arrangement est base sur des equations de conservation de masse pour des volumes de contrble discrets avec des Ccoulements intervolume uniques, ce qui assure une conservation globale de masse. Les decharges sont estimCes avec une Cquation d'energie quasi-stationnaire qui nCglige les changements de vClocitC. Des arrangements explicite et semi-implicite d'intkgration ont Ct C dCveloppCs et une procCdure de solution non linCaire pour le dernier arrangement est aussi prCsentCe. La stabilitC et prkcision numeriques ont Ct C Ctablies grice i l'application de la technique de Neuman. Des portraits d'amplitude et de phase de l'arrangement indiquent que lorsque la discretization est trop grossikre, la diffusion et la vitesse de vague sont sous-estimees. Des directives pour determiner

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