A review of research on tourism industry, economic crisis and mitigation process of the loss: Analysis on pre, during and post pandemic situation

Throughout time, the global tourism industry and economy have been significantly affected by disasters and crises. At present, COVID-19 represents one of these disasters as it has been causing a serious economic downturn with huge implications in tourism. In this review paper, we have analysed more than 100 papers regarding the effect and consequences of a pandemic on tourism and related industries, the economic situation in countries and areas, and mitigation of the loss incurred due to pandemic situations. The article (1) is based on past research on tourism and economy, (2) examines the effects of a pandemic on listed sectors and mitigation processes, and (3) suggests future research and approaches to help progress the field. We have gathered and categorised the literature reviews into several parts. In addition, we have listed the name of authors, journal names, books, websites, and relevant data

A Miniature Energy Harvesting Device for Wireless Sensors in Electric Power System

A novel energy harvesting device called the energy coupler is proposed which can provide power to small wireless sensors in a power system. The energy coupler when coupled electromagnetically to a nearby current carrying conductor scavenges ac power from the conductor. The proposed energy coupler converts the harvested ac power into dc using a passive voltage multiplier circuit. The design of the energy coupler is such that the dc power obtained is adequate to charge a miniature 1.2-V rechargeable battery. It is demonstrated that the energy coupler is capable of delivering 10 mW of dc power to a 50-Ω load. An analytical model is also presented which agrees well with measurement results within a margin of error of 10%

Factors associated with relapse amongst substance abusers

Background: Relapse amongst substance abusers is common throughout the world, and Bangladesh is no exception to this. In Bangladesh, drug related problems are gradually becoming a burning issue in context of social, economical and medical perspective. The present study aimed to find out factors indicating relapse amongst substance abuser. Methods: This descriptive type of observational study was conducted in the combined military hospital and other government/private hospital/institute, especially the central drug addict treatment center, Dhaka. Informed consent was obtained prior to data collection. Collected data was classified, edited, coded, and entered into the computer for statistical analysis by using SPSS-23. The chi-Square test was used to analyze the categorical variables, and a p<0.05 was considered as statistically significant. Results: The study involved 100 patients who had a history of substance abuse. The most common substance abused was Yaba (27%), followed by cannabis (21%). The average duration of abuse for Yaba was 5.8 years, while the longest mean duration was for Alcohol (14.2 years). In the 2nd admission, the largest percentage of patients was aged 21-30 years and were male. The majority of patients were Muslim and were either unemployed or had a lower socioeconomic status. Patients age, occupation, socioeconomic status, peer pressure, and family problems all had a significant association (p<0.05) with relapse at different admissions. Peer pressure and family problems were also identified as factors affecting relapse, with 67.57% and 56.76% of patients experiencing them during their 2nd admission, respectively. Conclusions: The study found Yaba to be the most commonly used drug, followed by cannabis, phensedyl, heroin, etc. Alcohol was found to have the longest duration of abuse. Most patients were aged 21-30 and unemployed in multiple admissions. Peer pressure and unemployment were major factors in substance abuse, and psychiatric illness was a common factor in relapse. The results align with global findings and highlight the need for a comprehensive approach to addressing substance abuse, considering all relevant factors.

Kondenzirani pirimidini. II dio: Sinteza i antimikrobna aktivnost nekih furo[3,2-e]imidazo[1,2-c]pirimidina i furo[2,3-d]pirimidina

2-Amino-4,5-diphenylfuran-3-carbonitrile (2) reacted with N-[bis(methylthio)methylene]glycine ethyl ester (1) to afford a double cyclized product 5-methylthio-8,9-diphenylfuro[3,2-e]imidazo [1,2-c]pyrimidin-2(3H)-one (3). Compound 2 also reacts with benzonitrile to give 4-amino- 2,5,6-triphenylfuro[2,3-d]pyrimidine (4). Treatment of 2 with HCONH2, under reflux, afforded 4-amino-5,6-diphenylfuro[2,3-d]pyrimidine (5) which was then allowed to react with chloroacetaldehyde to give 8,9-diphenylfuro[3,2-e]imidazo[1,2-c]pyrimidine (6). Reaction of 2 with HCOOH gave 5,6-diphenylfuro[2,3-d]pyrimidin-4(3H)-one (7) which was then converted to its tosyl derivative (8). The antimicrobial activity of the synthesized compounds 2–8 was tested.2-Amino-4,5-difenilfuran-3-karbonitril (2) u reakciji s etilnim esterom N-[bis(metiltio)metilen]glicina (1) daje produkt dvostruke ciklizacije – 5-metiltio-8,9-difenilfuro[3,2-e]imidazol[1,2-c]pirimidin-2(3H)-on (3). Također, u reakciji s benzonitrilom spoj 2 daje 4-amino-2,5,6-trifenilfuro[2,3-d]pirimidin (4). Grijanjem spoja 2 s HCONH2 dobiven je 4-amino-5,6-difenilfuro[2,3-d]pirimidin (5), koji reakcijom s kloracetaldehidom daje 8,9- difenilfuro[2,3-d]imidazo[1,2-c]pirimidin (6). Reakcijom 2 s HCOOH dobiven je 5,6-difenilfuro[2,3-d]pirimidin- 4(3H)-on (7), koji je preveden u tozilat (8). Spojevima 2-8 ispitana je antimikrobna aktivnost