Recently, J.-J. Shen, C.-W. Lin and M.-S. Hwang (Computers & Security, Vol 22, No 7, pp 591-595, 2003) proposed a modified Yang-Shieh scheme to enhance security. They claimed that their modified scheme can withstand the forged login attack and also provide a mutual authentication method to prevent the forged server attack. In this paper, we show that the Shen-Lin-Hwang scheme cannot resist the ...

The asymmetric unit in the title compound, C(5)H(5)NO, comprises two independent but virtually identical mol-ecules of 2-pyridone, and represents a monoclinic polymorph of the previously reported ortho-rhom-bic (P2(1)2(1)2(1)) form [Penfold (1953 ▶). Acta Cryst.6, 591-600; Ohms et al. (1984 ▶). Z. Kristallogr.169, 185-200; Yang & Craven (1998 ▶). Acta Cryst. B54, 912-920]. The independent mol-e...

Methods Sixteen untrained subjects (7 females and 9 males) completed three sprint tests, each consisting of four 12 sec efforts against 5.5% of body weight as resistance; efforts were separated by 2.5 min of cycling at zero resistance. Test one established baseline; test two and three were preceded by daily consumption of 591 ml of a carbohydrate-electrolyte beverage as a placebo or a carbohydr...

REPORTS Stratigraphy of the Wisconsin Range, Horlick Mountains, Antarctica: V. H. Minshew Strontium-90 Fallout: Comparison of Rates over Ocean and Land: W. S. Broecker, G. G. Rocco, H. L. Volchok ..................... Magnesium Ions: Activity in Seawater: R. M. Pytkowicz, I. W. Duedall, D. N. Connors Recent Emerged Beach in Eastern Mexico: E. W. Behrens ...................... Pressure-Induced P...

11. Geoffroy, M., Lambolez, B., Audinat, E., Hamon, B., Crepe], F., Rossier, J. and Kado, R. T. (1991) Mol. Pharmacol. 39,587-591 12. Lambolez, B., Audinat, E., Bochet, P., Crepe], F. and Rossier, J. (1992) Neuron 9,247-258 Gilliland, G., Perrin, S. and Bunn, F. H. (1990) in PCR Protocols (Innis, M. A., Gelfand, D. H., Sninsky, J. J. and White, T. G., eds.), pp. 60-69, Academic Press, NY Wang, ...

Epistaxis is one of the most frequent emergencies in rhinology. Patients using anticoagulative medication are at increased risk for epistaxis. We evaluated the prothrombin time and the international normalized ratio (INR) in anticoagulated epistaxis patients. Patients suffering from epistaxis were prospectively included in a database and results from prothrombin testing were analyzed in the con...

Let φN , N ≥ 1, be Daubechies’ scaling function with symbol ( 1+e−iξ 2 )N QN (ξ), and let sp(φN ), 0 < p ≤ ∞, be the corresponding Lp Sobolev exponent. In this paper, we make a sharp estimation of sp(φN ), and we prove that there exists a constant C independent of N such that N − ln |QN (2π/3)| ln 2 − C N ≤ sp(φN ) ≤ N − ln |QN (2π/3)| ln 2 . This answers a question of Cohen and Daubeschies (Re...

A low-power microscope-based cytological system to assess the quality of expectorated sputum provided for tuberculosis (TB) diagnosis was piloted in Bolivia. A total of 3688 samples were subjected to visual and cytological examination in nine laboratories: of these, 591 (16%) were misclassified by visual examination and 294 (8%) were found to be degraded. The degree of discordance varied betwee...

In 2014, Obokata and colleagues reported their observation of a novel cell reprogramming phenomenon they named 'stimulus-triggered acquisition of pluripotency' (STAP). The most conclusive evidence for the pluripotency of so-called STAP cells was the purported ability of such cells to contribute to chimera formation. Here, I report the results of an attempt by Haruko Obokata to replicate the phe...

Lignin biodegradation is catalyzed in part by ligninases, also known as lignin peroxidases (1-4). We have cloned and sequenced the gene encoding ligninase isozyme H8 from the white-rot fungus Phanerochaete chrysosporium. The gene is interrupted by eight introns, ranging in size from 49 to 69 bp, which are distributed throughout the gene. Putative transcriptional control signals (underlined) inc...