10 research outputs found
Socio-economic Structure & Sustainable Development of Indigenous Society: A Study on the Munda Community
The main aim of this research is to determine how to develop sustainable development for the Munda community based on their current socio-economic structure in view of their current condition The study is mainly quantitative in nature Koira and Dumuria upazilas of Khulna district and Shyamnagar Debhata and Tala upazilas of Satkhira district were selected through convenient sampling techniques for the purpose of collecting primary data because a large part of the Munda community lives in these areas A structured questionnaire was used to collect data from 250 respondents from five preselected areas The respondents were selected using a simple random sampling technique The data was analyzed in terms of statistical indicators of frequency and percentage The results of the study show that social indicators economic indicators and cultural factors are very weak among the Munda community Among the social indicators Munda women and men have very little interest in following hygiene rules sanitation birth control Economic indicators show income sources and job opportunities The Munda community has been facing many challenges recently Many educated boys and girls in the Munda community spend their days in agony due to a lack of suitable jobs which has a negative impact on everyone in the community Cultural factors show that the Munda community which is plagued by poverty can celebrate its cultural events in a grand manner so that other communities or ethnic groups do not get any idea about their culture This research will be of great help to those who work with the indigenous communities of Bangladesh especially the various ministries of the government NGOs policymakers and government and private research organization
Removal of Dark Blue-GL from Wastewater using Water Hyacinth: A Study of Equilibrium Adsorption Isotherm
The present investigation demonstrates that water hyacinth root is a potential adsorbent for the removal of dark blue-GL dye from wastewater by batch process. Various operating parameters such as the adsorption capacity, initial dye concentration, contact time, effect of pH, and adsorbent dosage were examined at different experimental conditions. The effect of pH and dye concentration found to be crucial, have been optimized, and the maximum recovery (~90%) was detected at pH 3 and concentration 150 ppm. The separation of dark blue-GL is proportionally related to the adsorbent dosage, and up to 77% dye was recovered for the dose 1.5 g/L. Langmuir adsorption isotherm model of the adsorption process was carried out at the equilibrium concentration of dark blue-GL uptake, and the corresponding data were analyzed by the least square methods. Kinetic parameters calculated from the tentative data could be fitted well to a pseudo-second-order kinetic model. These results point out aptness of the adsorbent in the niche area due to high adsorption capacity (~24 g/kg) and can be applied in the execution of dark blue-GL-enriche
Correction to “Linking Catalyst-Coated Isotropic Colloids into ‘Active’ Flexible Chains Enhances their Diffusivity”
Linking Catalyst-Coated Isotropic Colloids into “Active” Flexible Chains Enhances Their Diffusivity
Active
colloids are not constrained by equilibrium: ballistic propulsion,
superdiffusive behavior, or enhanced diffusivities have been reported
for active Janus particles. At high concentrations, interactions between
active colloids give rise to complex emergent behavior. Their collective
dynamics result in the formation of several hundred particle-strong
flocks or swarms. Here, we demonstrate significant diffusivity enhancement
for colloidal objects that neither have a Janus architecture nor are
at high concentrations. We employ uniformly catalyst-coated, <i>viz</i>. chemo-mechanically, isotropic colloids and link them
into a chain to enforce proximity. Activity arises from hydrodynamic
interactions between enchained colloidal beads due to reaction-induced
phoretic flows catalyzed by platinum nanoparticles on the colloid
surface. This results in diffusivity enhancements of up to 60% for
individual chains in dilute solution. Chains with increasing flexibility
exhibit higher diffusivities. Simulations accounting for hydrodynamic
interactions between enchained colloids due to active phoretic flows
accurately capture the experimental diffusivity. These simulations
reveal that the enhancement in diffusivity can be attributed to the
interplay between chain conformational fluctuations and activity.
Our results show that activity can be used to systematically modulate
the mobility of soft slender bodies
Satisfying QTPP of Erythropoietin Biosimilar by QbD through DoE-Derived Downstream Process Engineering
Well-characterized and scalable downstream processes for the purification of biologics are extremely demanding for delivering quality therapeutics to patients at a reasonable price. Erythropoietin (EPO) is a blockbuster biologic with diverse clinical applications, but its application is limited to financially well-off societies due to its high price. The high price of EPO is associated with the technical difficulties related to the purification challenge to obtain qualified products with a cost-effective defined process. Though there are reports for the purification of EPO there is no report of a well-characterized downstream process with critical process parameters (CPPs) that can deliver EPO consistently satisfying the quality target product profile (QTPP), which is a critical regulatory requirement. To advance the field, we applied the quality by design (QbD) principle and design of experiment (DoE) protocol to establish an effective process, which is scalable up to 100× batch size satisfying QTPP. We have successfully transformed the process from static mode to dynamic mode and validated it. Insignificant variation (p > 0.05) within and between 1×, 10×, and 100× batches showed that the process is reproducible and seamlessly scalable. The biochemical analysis along with the biofunctionality data ensures that the products from different scale batches were indifferent and comparable to a reference product. Our study thereby established a robust and scalable downstream process of EPO biosimilar satisfying QTPP. The technological scheme presented here can speed up the production of not only EPO but also many other life-saving biologics and make them available to the mass population at a reduced cost
Removal of dark blue-GL from wastewater using water hyacinth: a study of equilibrium adsorption isotherm
Measurement of branching fractions of and at Belle
We present a study of a singly Cabibbo-suppressed decay and a Cabibbo-favored decay based on 980 of data collected by the Belle detector, operating at the KEKB energy-asymmetric collider. We measure their branching fractions relative to : and . Combining with the world average , we have the absolute branching fractions: and . The first and second uncertainties are statistical and systematic, respectively, while the third ones arise from the uncertainty on . The mode is observed for the first time and has a statistical significance of . The branching fraction of has been measured with a threefold improvement in precision over previous results and is found to be consistent with the world average
Measurement of the lifetime at Belle II
We report on a measurement of the lifetime using decays reconstructed in data collected by the Belle II experiment and corresponding to of integrated luminosity. The result, , agrees with recent measurements indicating that the is not the shortest-lived weakly decaying charmed baryon
Measurement of the lifetime at Belle II
We report on a measurement of the lifetime using decays reconstructed in data collected by the Belle II experiment and corresponding to of integrated luminosity. The result, , agrees with recent measurements indicating that the is not the shortest-lived weakly decaying charmed baryon
Measurement of the lifetime at Belle II
We report on a measurement of the lifetime using decays reconstructed in data collected by the Belle II experiment and corresponding to of integrated luminosity. The result, , agrees with recent measurements indicating that the is not the shortest-lived weakly decaying charmed baryon