On the morphology and taxonomy of Cyclotella rossii (Bacillariophyta)

2019 ◽  
Vol 53 (2) ◽  
pp. 241-245
Author(s):  
S. I. Genkal
Keyword(s):  
Systematic Position ◽  
Published Data ◽  
Morphological Similarity ◽  
Qualitative Characters

An analysis of published data on Cyclotella rossii and С. chantaica has shown general morphological similarity and coincidence of the majority of quantitative and qualitative characters. They are valve diameter, frequency of marginal fultoportulae and number of satellite pores in them, number of central fultoportulae and number of their satellite pores, number of rimoportulae and valve relief, presence of externally colliculatelly, position of rimoportula and its fissure orientation respectively. Based on this data and priority the name С. chantaica, it is suggested to treat C. rossii as a synonym of С. chantaica and, considering the latest changes in their systematic position, expand the diagnosis of the species Pantocsekiella chantaica (Kuzmina et Genkal) K. T. Kiss, Genkal et Ács emend. Genkal.

On the morphological variability and systematic position of Cyclotella rossii Håkansson (Bacillariophyta)

2019 ◽  
pp. 159-161
Author(s):  
Sergei I. Genkal
Keyword(s):  
Morphological Variability ◽  
Systematic Position ◽  
Published Data

Based on the original and published data, it is suggested to refer Pantocsekiella rossii to the synonymy of Pantocsekiella chantaica and extend the diagnosis of the latter.

Review of the Chinese species of Ducetiini (Orthoptera: Tettigoniidae: Phaneropterinae)

2002 ◽  
Vol 33 (3) ◽  
pp. 337-360 ◽  
Author(s):  
Andrej V. Gorochov ◽  
Keyword(s):  
New Taxa ◽  
Systematic Position ◽  
Junior Synonym ◽  
Published Data ◽  
Identification Keys

AbstractThe Chinese representatives of the tribe Ducetiini are partly revised. The paper includes descriptions of new taxa (Ducetia borealis sp. n., Kuwayamaea inflata sp. n., K. anhuii sp. n., K. fujiani sp. n., K. hunani sp. n., K. brachyptera sp. n., Prohimerta guizhouensis sp. n., P. fujianensis sp. n., P. hubeiensis sp. n., P. sichuanensis sp. n., Shirakisotima furca sp. n., Paraducetia paracruciata gen. & sp. n.) and of the previously unknown female of Sh. brevifissa Wang & Liu, identification keys to genera and species of Chinese Ducetiini for males, notes about systematic position and distribution of the taxa examined [the former genus Anisotima Bey-Bienko is a subgenus of the genus Prohimerta Hebard; Sh. acuminata Wang & Liu is possibly a junior synonym of Sh. multipunctata (Kang & Yang); some published data on distribution of K. sapporensis Matsumura & Shiraki, Prohimerta yunnana (Bey-Bienko), and Paraducetia cruciata (Brunner von Wattenwyl) are probably erroneous].

The status of the staphylinid genera Derops Sharp and Rimulincola Sanderson (Coleoptera)

1983 ◽  
Vol 14 (3) ◽  
pp. 269-279 ◽  
Author(s):  
A. Smetana
Keyword(s):  
North America ◽  
Distribution Pattern ◽  
Geographical Distribution ◽  
Systematic Position ◽  
Published Data ◽  
Southern Illinois ◽  
The Family ◽  
The Status ◽  
New Tribe ◽  
Nearctic Region

AbstractThe systematic position of the genus Derops Sharp, 1889 (several species in the Palaearctic and Oriental regions) within the family Staphylinidae and its relationship to the genus Rimulincola Sanderson, 1947 (one species in the eastern Nearctic region) are discussed. The genus Derops is shown to be congeneric with Rimulincola, which becomes a junior synonym of Derops. — The genus Derops is removed from the subfamily Phloecharinae and reassigned to the subfamily Tachyporinae as a separate new tribe Deropsini. A key to the tribes of Tachyporinae is given. — Derops kasugaensis (Sawada, 1956) is placed in synonymy with Derops longicornis Sharp, 1889. The published data on the ecology of species of Derops are summarized and detailed ecological observations by the author on D. divalis (southern Illinois) andD. longicornis (Japan, Honshu) are given and compared. The disjunct (eastern and/or midwestern North America-southeastern Asia) type of geographical distribution of Derops is discussed and compared with similar distributions of the syrphid genus Pterallastes Loew (Diptera and some plant genera). This distribution pattern is considered to be unique within the order Coleoptera.

Rediscovery of Pimpinella crispulifolia (Apiaceae) after one century, and its new phylogenetic placement in Sium

Phytotaxa ◽  
2021 ◽  
Vol 487 (2) ◽  
pp. 157-163
Author(s):  
JING ZHOU ◽  
JUNMEI NIU ◽  
MINGJIA GUO ◽  
PEI WANG ◽  
ZHENWEN LIU
Keyword(s):  
Internal Transcribed Spacer ◽  
Phylogenetic Reconstruction ◽  
Its Region ◽  
Systematic Position ◽  
New Combination ◽  
Morphological Description ◽  
Morphological Similarity ◽  
Phylogenetic Placement

Pimpinella crispulifolia, a species known only from the holotype locality (Laoguishan of Shilin County) collected in 1906, was rediscovered in Luquan County of Kunming City, China. To examine its systematic position, a phylogenetic reconstruction was performed based on nrDNA internal transcribed spacer (ITS) region under the framework phylogeny of Apiaceae subfamily Apioideae. It showed an affinity to Sium species of Oenantheae. Morphological similarity is reflected in its fascicled roots, simple pinnate leaves, long and reflexed styles, and ovoid, laterally compressed fruits with prominent and corky-thickened ribs. Therefore, a new combination of Sium crispulifolium (H.de Boissieu) J. Zhou is proposed with full taxonomic treatments. Its morphological description is also amended and completed with both living individuals and newly collected specimens.

Influence of nascent polypeptide positive charges on translation dynamics

2020 ◽  
Vol 477 (15) ◽  
pp. 2921-2934
Author(s):  
Rodrigo D. Requião ◽  
Géssica C. Barros ◽  
Tatiana Domitrovic ◽  
Fernando L. Palhano
Keyword(s):  
Mrna Decay ◽  
Translation Termination ◽  
Published Data ◽  
Translation Efficiency ◽  
Amino Acid Residues ◽  
High Concentration ◽  
Strong Argument ◽  
Translation Arrest ◽  
Exit Tunnel ◽  
Positively Charged

Protein segments with a high concentration of positively charged amino acid residues are often used in reporter constructs designed to activate ribosomal mRNA/protein decay pathways, such as those involving nonstop mRNA decay (NSD), no-go mRNA decay (NGD) and the ribosome quality control (RQC) complex. It has been proposed that the electrostatic interaction of the positively charged nascent peptide with the negatively charged ribosomal exit tunnel leads to translation arrest. When stalled long enough, the translation process is terminated with the degradation of the transcript and an incomplete protein. Although early experiments made a strong argument for this mechanism, other features associated with positively charged reporters, such as codon bias and mRNA and protein structure, have emerged as potent inducers of ribosome stalling. We carefully reviewed the published data on the protein and mRNA expression of artificial constructs with diverse compositions as assessed in different organisms. We concluded that, although polybasic sequences generally lead to lower translation efficiency, it appears that an aggravating factor, such as a nonoptimal codon composition, is necessary to cause translation termination events.

Metallic prions

2004 ◽  
Vol 71 ◽  
pp. 193-202 ◽  
Author(s):  
David R Brown
Keyword(s):  
Prion Protein ◽  
Binding Capacity ◽  
Normal Function ◽  
Transmissible Spongiform Encephalopathies ◽  
Published Data ◽  
Normal Brain ◽  
Copper Binding ◽  
Loss Of Function ◽  
Spongiform Encephalopathies ◽  
The Brain

Prion diseases, also referred to as transmissible spongiform encephalopathies, are characterized by the deposition of an abnormal isoform of the prion protein in the brain. However, this aggregated, fibrillar, amyloid protein, termed PrPSc, is an altered conformer of a normal brain glycoprotein, PrPc. Understanding the nature of the normal cellular isoform of the prion protein is considered essential to understanding the conversion process that generates PrPSc. To this end much work has focused on elucidation of the normal function and activity of PrPc. Substantial evidence supports the notion that PrPc is a copper-binding protein. In conversion to the abnormal isoform, this Cu-binding activity is lost. Instead, there are some suggestions that the protein might bind other metals such as Mn or Zn. PrPc functions currently under investigation include the possibility that the protein is involved in signal transduction, cell adhesion, Cu transport and resistance to oxidative stress. Of these possibilities, only a role in Cu transport and its action as an antioxidant take into consideration PrPc's Cu-binding capacity. There are also more published data supporting these two functions. There is strong evidence that during the course of prion disease, there is a loss of function of the prion protein. This manifests as a change in metal balance in the brain and other organs and substantial oxidative damage throughout the brain. Thus prions and metals have become tightly linked in the quest to understand the nature of transmissible spongiform encephalopathies.

Accuracy of Four Language Analysis Procedures Performed Automatically

2001 ◽  
Vol 10 (2) ◽  
pp. 180-188 ◽  
Author(s):  
Steven H. Long ◽  
Ron W. Channell
Keyword(s):  
Automatic Identification ◽  
Published Data ◽  
Typically Developing ◽  
Language Impaired ◽  
Productivity Data ◽  
Language Analysis ◽  
Word Classes ◽  
Human Coder ◽  
Impaired Children ◽  
Metalinguistic Skills

Most software for language analysis has relied on an interaction between the metalinguistic skills of a human coder and the calculating ability of the machine to produce reliable results. However, probabilistic parsing algorithms are now capable of highly accurate and completely automatic identification of grammatical word classes. The program Computerized Profiling combines a probabilistic parser with modules customized to produce four clinical grammatical analyses: MLU, LARSP, IPSyn, and DSS. The accuracy of these analyses was assessed on 69 language samples from typically developing, speech-impaired, and language-impaired children, 2 years 6 months to 7 years 10 months. Values obtained with human coding and by the software alone were compared. Results for all four analyses produced automatically were comparable to published data on the manual interrater reliability of these procedures. Clinical decisions based on cutoff scores and productivity data were little affected by the use of automatic rather than human-generated analyses. These findings bode well for future clinical and research use of automatic language analysis software.

Personality of Clown Doctors

2016 ◽  
Vol 37 (1) ◽  
pp. 49-55 ◽  
Author(s):  
Alberto Dionigi
Keyword(s):  
General Population ◽  
Personality Traits ◽  
Big Five ◽  
Normal Population ◽  
Big Five Personality Traits ◽  
Published Data ◽  
Big Five Personality

Abstract. In recent years, both professional and volunteer clowns have become familiar in health settings. The clown represents a peculiar humorist’s character, strictly associated with the performer’s own personality. In this study, the Big Five personality traits (BFI) of 155 Italian clown doctors (130 volunteers and 25 professionals) were compared to published data for the normal population. This study highlighted specific differences between clown doctors and the general population: Clown doctors showed higher agreeableness, conscientiousness, openness, and extraversion, as well as lower neuroticism compared to other people. Moreover, specific differences emerged comparing volunteers and professionals: Professional clowns showed significantly lower in agreeableness compared to their unpaid colleagues. The results are also discussed with reference to previous studies conducted on groups of humorists. Clowns’ personalities showed some peculiarities that can help to explain the facility for their performances in the health setting and that are different than those of other groups of humorists.

The systematic position of the genusCalyptrotheca Gilg (Portulacaceae)

1986 ◽  
Vol 97 (11-12) ◽  
pp. 767-769
Author(s):  
Bio Louis Nyananyo
Keyword(s):  
Systematic Position
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