Neglected foreign body aspiration mimicking bronchial carcinoma

Foreign body aspiration can occur in any age group, but it is more commonly seen in children. In adults, there is usually a predisposing condition that poses a risk of aspiration. If aspiration occurs, prompt diagnosis and extraction of the foreign body is needed to prevent early and late complications. We report a rare case of neglected foreign body aspiration in a 45-year-old schizophrenic opium addicted patient, which resulted in an occlusive lesion in the bronchus, mimicking bronchial carcinoma. © The Author(s) 2015

A Study on anisotropy of cosmic ray distribution with a small array of water-cherenkov detectors

The study of the anisotropy of the arrival directions is an essential tool to investigate the origin and propagation of cosmic rays primaries. A simple way of recording many cosmic rays is to record coincidences between a number of detectors. We have monitored multi-TeV cosmic rays by a small array of water cherenkov detectors in Tehran(35 43 N, 51 20 E, 1200m a.s.l). More than 1.1*10^6 extensive air shower events were recorded. In addition to the Compton- Getting effect due to the motion of the earth in the Galaxy, an anisotropy has been observed which is due to a unidirectional anisotropy of cosmic ray flow along the Galactic arms.Comment: 16 pages 9 figs and one tabl

Optimal constrained non-renewable resource allocation in PERT networks with discrete activity times

AbstractIn this paper, we develop an approach to optimally allocate a limited nonrenewable resource among the activities of a project, represented by a PERT-Type Network (PTN). The project needs to be completed within some specified due date. The objective is to maximize the probability of project completion on time. The duration of each activity is an arbitrary discrete random variable and also depends on the amount of consumable resource allocated to it. On the basis of the structure of networks, they are categorized as either reducible or irreducible. For each network structure, an analytical algorithm is presented. Through some examples, the algorithms are illustrated

Weak helix submanifolds of euclidean spaces

It is shown that there exist nonstrong weak 2-helix surfaces of R

Partial synthesis of chaksine

This thesis is concerned with the preliminary studies in the synthesis of a monoterpenoid alkaloid, chaksine, Ethyl 2-methylcyclohexanone-6-carboxylate (XI) was hydroxymethylated with formaldehyde to give Ethyl 2-methyl~6-hydroxymethylcyclohexanone--6-Carboxylate (XII). Tosylation and cleavage of this product gave 2-methyl-6- carbethoxy-B-heptenoic (XIV) acid along with the diethyl ester (XIVa)» Ozonolysis of the diethyl ester yielded diethyl 2-keto-6-methyl pimelate (XV). A Wittig reaction v/ith diethyl cyanomethyl phosphonate (XVI) gave l-cyano-6~methyll- cyano-2, 6-dicarbethoxy-l-heptene (XVII). Other related studies involved: 1) Preparation of ethyl 2-methyl-6-vinylcyclohexanone-6-carboxylate (XXII), 2) A new method for preparation of 2-imidazolidones (XXIV). 3) Preparation of l-phenyl~2-aldehydo-6-methyl~l, 6-heptadiene (XXXIII) and l-n-butylthio-2-aldehydo-6-methyl-l, 6-heptadiene (XXXIX)

Yield of protein recovery and degree of hydrolysis associated protein hydrolysates from Bighead Carp (Aristichthys nobilis) by using enzymes

The present study compared the properties of Bighead carp (Aristichthys nobilis) visceral, viscera use of commercial enzymes (Alcalase, Papain, and Protamex), recovery protein and degree of hydrolysis in the various temperatures and times of hydrolysis process. According to results, increase in time and temperature in hydrolysis process, led to increase in both recovery protein and degree of hydrolysis. Maximum of these parameters were observed at 55°C and 60min. minimum of parameters were observed at 35°C and 15min. In addition, among enzymes being investigated, Alcalase had high rate of recovery protein and degree of hydrolysis in equal temperature and times different from others enzymes (Papain and Protamex). Maximum mean of recovery protein for Alcalase was %51.38±2.39 in 55°C and 60 min of hydrolysis process. Also, maximum degree of hydrolysis for Alcalaqse was more than 20% at 55°C and 60 min of hydrolysis process. In conclusion, use of Alcalase enzyme induces product protein hydrolysates from Bighead Carp (Aristichthys nobilis) viscera that have suitable quality than others enzymes (Papain, and Protamex)