In this paper we present a method (linear in the size of the formal context) to solve the seriation problem for formal contexts. We show that any maximal solution can be represented by a PQ-Tree. Moreover, the set of PQ-Trees can be seen as a distributive lattice. This lattice yields a consensus method which deals with the multiple solutions.

This cytogenetic and pharmacological study attempts to clarify genotoxicity-enhancement-effect of dl-α-tocopherol (one form of vitamin E) in combination with the herbicide 1,1'-dimetyl-4,4'-bipyridium dichloride (paraquat, PQ) on cultured anuran leukocytes using the superoxide dismutase-mimic Mn(III)tetrakis(1-methyl-4-pyridyl)porphyrin (Mn(III)TMpyP), the hydrogen peroxide-scavenger catalase a...

Queens of the primitively eusocial wasp Ropalidia marginata appear to maintain reproductive monopoly through pheromone rather than through physical aggression. Upon queen removal, one of the workers (potential queen, PQ) becomes extremely aggressive but drops her aggression immediately upon returning the queen. If the queen is not returned, the PQ gradually drops her aggression and becomes the ...

Power quality (PQ) is an increasing concern in the distribution networks of modern industrialized countries. The PQ monitoring activities system operators (DSO), and consequently amount measurement data, continuously increase, new automated tools are required for efficient analysis. Time characteristics parameters (e.g., harmonics) usually show characteristic daily weekly cycles, mainly caused ...

Hematotoxicity in individuals genetically deficient in glucose-6-phosphate 22 dehydrogenase (G6PD) activity is the major limitation of primaquine (PQ), the only antimalarial 23 drug in clinical use for treatment of relapsing P. vivax malaria. PQ is currently clinically used in 24 its racemic form. A scalable procedure was developed to resolve racemic PQ thus providing pure 25 enantiomers for th...

Abstract Power quality is one of the most important research eras for energy sector. Suddenly dropped voltages or suddenly rising and harmonics in should be identified. All these distortions are called power disturbances (PQDs). Deep learning based convolutional artificial neural networks with an attention model approach has been carried out. The main idea to develop a new network (CNN) which c...

The detection and classification of power quality disturbances in power systems are important tasks in monitoring and protection of power system network. Most of the power system disturbances are non stationary and transitory in nature and new tools are being used nowadays for the analysis of power quality disturbances. This paper presents a wavelet based feature extraction method for the detec...

since it is essential to deliver smoothed sinusoidal voltage to the customers, diagnosing power quality (pq) events has played important role in power delivery and conversion. this diagnostic scheme should be accurate to classify pq events from other events in power system. also it should be fast enough to rapidly mitigate pq events. in this paper, an algorithm based on core vector machine (cvm...

OBJECTIVE This study was designed to investigate the protective effects of salidroside (SDS) via suppressing the expression of transforming growth factor-β1 (TGF-β1) in rat acute lung injury (ALI) induced by paraquat (PQ) and to explore the potential molecular mechanisms. METHODS A total of 90 male rats (190-210 g) were randomly and evenly divided into 9 groups: control group, PQ groups (4 gr...

BACKGROUND/AIMS Paraquat (PQ) has been used in suicide attempts; an estimated 2,000 toxic ingestions occur annually, with 60-70% mortality. We sought to determine why PQ is such a common agent for suicide attempts in Korea. METHODS We analyzed 250 cases (143 males, 107 females) of attempted suicide by PQ ingestion from January to December 2007. The procurement of the PQ was divided into two c...