In vivo, nicotine in cigarette smoke induces various effects not only on the respiratory system but also the central and peripheral nerve systems, circulatory organs and digestive organs, and there is a possibility of promotion of lung tumorigenesis. The present experiment was conducted to examine histopathological changes caused by nicotine in the lung with repeated intratracheal instillation ...

  This study was conducted to evaluate the efficacy of live food (Artemia urmiana) and commercial diet in rearing of Oncorhynchus mykiss larvae. Experiment started when larvae were 0.12g in weight. Triplicate groups of fish were offered one of four treatments: (1) a commercial starter food (2) live Artemia urmiana nauplii (for 3 days) (3) live Artemia urmiana nauplii (for 7 days) and (4) combin...

  This study was conducted to evaluate the efficacy of live food (Artemia urmiana) and commercial diet in rearing of Oncorhynchus mykiss larvae. Experiment started when larvae were 0.12g in weight. Triplicate groups of fish were offered one of four treatments: (1) a commercial starter food (2) live Artemia urmiana nauplii (for 3 days) (3) live Artemia urmiana nauplii (for 7 days) and (4) combin...

• T ∼ 10−4 eV, t ∼ 1010 yr: today; baryons and the CMB are entirely decoupled, stars and galaxies have been around a long time, and clusters of galaxies (gravitationally bound systems of ∼ 1000s of galaxies) are becoming common. • T ∼ 10−3 eV, t ∼ 109 yr; the first stars and (small) galaxies begin to form. • T ∼ 10−1−2 eV, t ∼ millions of years: baryon drag ends; at earlier times, the baryons a...

Last week we discussed the randomized O(n) expected time algorithm to compute the closest pair of points in the plane. This week we continue with a related data structure problem: (approximate) near neighbor search. Suppose you have a database D of n entries: images, text documents, census data, etc. Using a Dictionary data structure, for example a B-tree or a hash table, you can check if an en...

This week we take the limit ∆t → 0. The limit is a process Xt that is defined for all t in some range, such as t ∈ [0, T ]. The process takes place in continuous time. This week, Xt is a continuous function of t. The process has continuous sample paths. It is natural to suppose that the limit of a Markov process is a continuous time Markov process. The limits we obtain this week will be either ...

Ninety male Syrian hamsters, 3 months of age, were divided into 6 equal experimental groups of 15 animals. Two groups served as controls for 8and 16-week experimental periods. In the remaining 4 groups, the light buccal pouch was painted 3 times weekly with 9,10-dimethyl-l ,2-benzanthracene (DMBA) and sacrificed at 8 and 16 weeks. One 8-week and one 16-week experimental group were also injected...

BACKGROUND Obesity has become a disease of global public health concern in both developing and developed countries. We investigated the influence of socio-demographic, dietary habits and physical activity levels on general and abdominal obesity among a sample of university students in Ghana. METHODS This cross-sectional study was carried out among a sample of 552 students attending the Univer...

background: stimulatory therapy with gonadotrpins is an effective treatment to induce spermatogenesis in men with idiopathic hypogonadotroptic hypogonadism (ihh). the aim of this study was to assess the effectiveness of human chorionic gonadotropin / human menopausal gonadotropin on hypogonadotropic infertile men. materials and methods: this study included fifty-six azoospermic infertile men wi...