An algorithm is presented which implements a probabilistic attack on the key-exchange protocol based on Permutation Parity Machines. The strategy consists of a Monte Carlo method to sample the space of possible weights during inner rounds and an analytic approach to convey the extracted information from one outer round to the next one. The results show that the protocol under attack fails to sy...

A photoacoustic multi-gas sensor using tuneable laser diodes in the near-infrared region is reported. An optimized resonant configuration based on an acoustic longitudinal mode is described. Automatic tracking of the acoustic resonance frequency using a piezo-electric transducer and a servo electronics is demonstrated. Water vapour, methane and hydrogen chloride have been measured at sub-ppm le...

Introduction Methylsulfonylmethane (MSM), also known as dimethyl sulfone (DMSO 2 ) and methyl sulfone, is an organic sulfur-containing compound that occurs naturally in a variety of fruits, vegetables, grains, and animals including humans. A white, odorless, slightly bitter-tasting crystalline substance containing 34-percent elemental sulfur, MSM is a normal oxidative metabolite product of dime...

Shallow groundwater is heavily contaminated with arsenic in Bangladesh. The results of a total of 77 samples in two studied upazilas Daudkandi and Begumganj showed elevated levels of arsenic contents in tube well water (range: 0.29-0.71 ppm, n = 6), soils (range: 5.64-29.47 ppm DW, n =16), human scalp hair, (range: 2.41-14.91 ppm DW, n = 8), kachu (range: 0.11-3.89 ppm FW, n = 5), water spinach...

In a study of a possible syncarcinogenic effect of nitrosodimethylamine (NDMA) on sterigmatocystin ISTG) carcinogenesis. male rats were fed diets containing I 0 ppm STG. 10 ppm STG and I ppm NDMA. I ppm STG and IOppm NDMA or JOppm NDMA for 54 wk. Hepatic carcinomas developed in 75° o of the rats fed 10 ppm STG plus I ppm NDMA and in 53";, of those fed 10 ppm STG alone. The hepatic carcinomas de...

Cassava is a staple mostly eaten in the form of gari, after rice in Liberia. The local method of gari processing often leads to product contamination, thus, a study was done to assess the heavy metals and microbial contamination of gari in eight counties of the country. A total of sixty-one gari samples were collected and packaged in an airtight polyethylene bag for analyses, using standard met...

Clove (Syzygium aromaticum) and turmeric (Curcuma longa) extracts were tested against crucifer pathogens using soaking method. Both extracts showed inhibitory effects on the pathogens. The results of antifungal activities revealed that clove extract was indicated the minimum inhibitory concentration (MIC) of Alternaria brassicicola and Fusarium oxyporum at 1900 ppm and 2300 ppm respectively. Wh...

In this study elements of validation of headspace GC method of determination of residual methanol, n-pentane, ethanol, tert-butylamine, 2propanol, acetonitrile, dichloromethane and toluene in pharmaceutical substance are presented. Validation of the method included: selectivity, system precision, method precision, accuracy (recovery), limits of detection and quantitation (in substance), robustn...

INTRODUCTION The STOP TB Partnership aims to improve global tuberculosis (TB) control through expanding access to the directly observed treatment short course (DOTS) strategy. One approach to this is 'Engaging all Care Providers', which evolved from 'Public-Private Mix (PPM) DOTS'. The overall aim of this study was to systematically assess whether and to what degree the STOP TB Partnership's fo...

INTRODUCTION Inhaled nitric oxide (iNO) improves outcomes when given post systemic ischemia/reperfusion injury. iNO given during cardiopulmonary resuscitation (CPR) may therefore improve return of spontaneous circulation (ROSC) rates and functional outcome after cardiac arrest (CA). METHODS Thirty male Sprague-Dawley rats were subjected to 10 minutes of CA and at least 3 minutes of CPR. Anima...