Abstract In this study, based on the energy balance for different components of a double-layered vacuum-tube solar collector with U-tube, thermal performance unit is investigated separately using an analytical and quasi-dynamic method. The model used in study determines temperature distribution longitudinal radial directions. research, effects physical parameters heat transfer including size co...

Abstract In recent years, surveillance cameras have become common in the education system, early childhood child-care centres as well preschools and schools. Public opinion regarding usage of security institutions is constantly increasing due to a growing number incidents exhibiting child abuse by caregivers. However, meagre attention given use literature. We examined opinions care teachers car...

Liver disorders share a larger disease burden of the world every year. are caused by toxic chemicals, drugs, viruses (hepatitis A, B, C, D, and E), excess alcohol intake etc., ranked among top ten killer diseases in India. With only meagre number dependable drugs available for hepatoprotective action, present scenario has created stage scientific evaluation traditional medicines treatment liver...

The debate on the failure of efforts to avert full-scale Russian invasion Ukraine in February 2022 is dominated by two narratives presented as mutually exclusive. On one hand, 'hawks' chastise West for failing forcefully confront adventurism earlier. other 'realists' criticise West's overreach incorporate into Western structures. Both views implicitly contend that there was only way prevent war...

Many factors such as human movement can weaken indoor temperature stratification and lead to the advantages of displacement ventilation (DV) disappearing. Yet investigation for stratified destructive time during recovery after stops are still meagre so far. The concepts dynamic steady-state static proposed compute time( T b ). isothermal surface 295K is engaged explain variation . At last, rest...

Oroxylum indicum (L.) Kurz a well know and pharmaceutically explored medicinal plant of the family Bignoniaceae but in context cytological work, meagre information is available on same plant. During present investigation six accessions O. were studied for understanding male meiosis related events using standard techniques. Although, meiotic course was found to be regular, anomalies such as chro...

Institutions affect economic development and social stability, the characteristics of institutional change are a complex widely discussed topic. This paper constructs theoretical analysis framework to describe relationship between change, resource conditions, overall welfare, so as explore preconditions for formation institutions with greater equity higher efficiency. On basis this analytical f...

We show that the real line R cannot be covered by k many nowhere dense sets iff whenever D = {D¡ : i e k} is a family of dense open sets of R there exists a countable dense set G of R such that \G\D¡\ < co for all i e k. We also show that the union of k meagre sets of the real line is a meagre set iff for every family D = {D¡ : i £ k} of dense open sets of R and for every countable dense set G ...