The Birbhum HDSS was established in 2008 and covers 351 villages in four administrative blocks in rural areas of Birbhum district of West Bengal, India. The project currently follows 54 585 individuals living in 12557 households. The population being followed up is economically underprivileged and socially marginalized. The HDSS, a prospective longitudinal cohort study, has been designed to study changes in population demographic, health and healthcare utilization. In addition to collecting data on vital statistics and antenatal and postnatal tracking, verbal autopsies are being performed. Moreover, periodic surveys capturing socio-demographic and economic conditions have been conducted twice. Data on nutritional status (children as well as adults), non-communicable diseases, smoking etc. have also been collected in special surveys. Currently, intervention studies on anaemia, undernutrition and common preschool childhood morbidities through behavioural changes are under way. For access to the data, a researcher needs to send a request to the Data Manager [suri.shds@gmail.com]. Data are shared in common formats like comma-separated files (csv) or Microsoft Excel (xlsx) or Microsoft Access Database (mdb).The HDSS will soon upgrade its data management system to a more integrated platform, coordinated and guided by INDEPTH data sharing policy.

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The mycobacillin-synthesizing enzyme system was highly purified by fractionation at 30-55% (NH4)2SO4 saturation. The enzyme concentrate on Sephadex G-200 gel chromatography was resolved into three distinct fragments. Each of the fragments on further purification by DEAE-cellulose ion-exchange chromatography behaved as a single-component system, as clearly indicated by the sharpness of the peaks in the elution diagram. None of the fragments alone nor any two of them in all possible combinations possessed mycobacillin-synthesizing activity, which was restored only when the three fragments were used together in the test system.

COVID-19 pandemic has been spread like wildfire and left its deadly impact throughout the world. This would harm businesses according to the sectors. Like other sectors real estate sector under the construction industry is also facing the impact of the COVID-19 pandemic. It becomes very detrimental about labour market, company liquidity, the supply of materials, project delivery, and key cost components, and so on. In general, it happens that the real estate sector often experiences complexities in case of project completion, scheduling, and financing. The planned work cannot be carried out due to the non-availability of sufficient numbers of skilled labours and staff. Moreover due to effects of pandemic real estate sectors and the work-life of real estate professionals are being hampered. It is very much obvious that human resources act as the lifeline of any organization and they need to be handled and managed with the utmost care and dignity. Despite the physical, technological and financial resources in the business, human resource is such a critical asset that employers should take care of their quality of work-life all the time, not only during the crisis period. By satisfying them the business can achieve its objectives in terms of revenue and recognition. After a strict lockdown when things return to new normal and employees return to work, the company needs to take certain 'human resource' perspectives for maintaining a good quality of work life. All the employers should implement some strategies concerning to qualitative work life of the employees during this epidemic situation. The real estate sector is labour intensive and employees are a very critical resource that helps to increase productivity and enhancing competitiveness in the market. The impact of the pandemic on the quality of work-life among real estate employees in Kolkata, India is also studied.

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