scholarly journals Bioacoustics of poorly known Poecilimon taxa (Insecta: Orthoptera: Tettigoniidae) with redescriptions of P. pechevi and P. stschelkanovzevi

Zootaxa ◽  
2020 ◽  
Vol 4890 (4) ◽  
pp. 535-553
Author(s):  
DRAGAN P. CHOBANOV ◽  
HASAN SEVGILI ◽  
KLAUS-GERHARD HELLER
Keyword(s):  
Close Relationships ◽  
The Other ◽  
Published Data ◽  
Song Structure ◽  
Sound Communication

The genus Poecilimon has been object of several studies dealing with its systematics, sound communication and evolution. Yet, published data contradict in the classification, while many taxa are still insufficiently known. In the present study we supplement the knowledge of 13 poorly known species and one additional subspecies with data on their sound communication and/or morphology. Most species concerned here are classified within two acoustic groups. First group includes P. celebi, P. obtusicercus and P. toros, showing typical characteristics of the P. syriacus group. Second group is more heterogeneous. Among that, P. pechevi, P. armeniacus, P. harveyi, P. guichardi, P. haydari, P. doga, P. davisi and P. excisus present a song pattern similar to that of P. ampliatus. In addition, P. ataturki is also quite similar in basic song structure to the latter but differs in its fine song structure. Poecilimon stschelkanovzevi, with unclear relationships, is described morphologically in detail. The present study provides hints for solving some disagreement between recent revisions, proposing unification of the Poecilimon celebi with P. syriacus group and opening discussion based on close relationships of the groups ampliatus, armeniacus, davisi, luschani and the species P. guichardi on one hand, while the complex P. ataturki/glandifer shows significant differences on the other. The acoustic peculiarities of the ampliatus group allies are discussed in an evolutionary light. 

Problems of species and the features of geographical distribution in colonial volvocine algae (Chlorophyta)

2020 ◽  
Vol 54 (2) ◽  
pp. 299-311
Author(s):  
A. G. Desnitskiy
Keyword(s):  
New Species ◽  
Geographical Distribution ◽  
World Literature ◽  
The Other ◽  
Disjunct Distribution ◽  
Published Data ◽  
Species Problem ◽  
Comprehensive Review ◽  
Volvocine Algae ◽  
Cryptic Taxa

More than ten new species of colonial volvocine algae were described in world literature during recent years. In present review, the published data on taxonomy, geographical distribution and the species problem in this group of algae, mainly from the genera Gonium, Pandorina, Eudorina, and Volvox, are critically discussed. There are both cosmopolitan volvocalean species and species with local or disjunct distribution. On the other hand, the description of new cryptic taxa in some genera of the colonial family Volvocaceae, such as Pandorina and Volvox, complicates the preparation of a comprehensive review on their geography.

Removal of Trace Metals From Wastewater by Activated Carbon

1973 ◽  
Vol 8 (1) ◽  
pp. 110-121
Author(s):  
A. Netzer ◽  
J.D. Norman
Keyword(s):  
Activated Carbon ◽  
Trace Metals ◽  
Organic Compounds ◽  
The Other ◽  
Published Data ◽  
Ph Adjustment ◽  
Nickel Silver ◽  
Ph Range ◽  
Carbon Treatment ◽  
Cobalt Copper

Abstract The merits of activated carbon for removal of organic compounds from wastewater have been well documented in the literature. On the other hand there is a lack of published data on the use of activated carbon for the removal of trace metals from wastewater. Experiments were designed to assess the possibility that activated carbon treatment would remove aluminum, cadmium, chromium, cobalt, copper, iron, lead, manganese, mercury, nickel, silver and zinc from wastewater. All metals studied were tested over the pH range 3-11. Greater than 99.5% removal was achieved by pH adjustment and activated carbon treatment for most of the metals tested.

Neuroblastoma—When are Urinary Catecholamines and Their Metabolites ‘Normal’?

1988 ◽  
Vol 25 (6) ◽  
pp. 620-626 ◽  
Author(s):  
D J Worthington ◽  
E M Hammond ◽  
B B Eldeeb ◽  
A Green ◽  
G M Addison ◽  
...  
Keyword(s):  
Urinary Excretion ◽  
The Other ◽  
Published Data ◽  
Single Test ◽  
Creatinine Concentration ◽  
Urinary Catecholamines ◽  
Clinical Sensitivity ◽  
Reference Limit ◽  
Upper Reference Limit ◽  
The Individual

The overproduction of catecholamines and their metabolites is a well recognised feature of neuroblastoma. Published data are scarce for their urinary excretion in children with neuroblastoma and in ill children in whom this diagnosis may be considered. We have determined a graphical upper reference limit for total catecholamines, total metadrenalines and HMMA in urine, expressed as a ratio to the creatinine concentration, for a group of 174 children with neuroblastoma and 704 hospitalised children with other disorders. This graph has been determined by examining the overlap region between the results for the two groups of children and avoids the irregularities caused by statistical outliers. The sensitivity and specificity of the individual tests indicate that total catecholamines is marginally the best single test to perform when trying to diagnose neuroblastoma, with the best clinical sensitivity being achieved by examining both total catecholamines and HMMA. Only two of the 174 children with neuroblastoma would not have been detected using these two tests. Total metadrenalines did not appear to add any further information and could be dropped from the repertoire in favour of the other two measurements.

scholarly journals KNOX HOMOLOGS SHOOT MERISTEMLESS (STM) and KNAT6 are epistatic to CLAVATA3 (CLV3) during embryonic meristem development in Arabidopsis thaliana

2020 ◽  
Author(s):  
Sharma Nidhi ◽  
Liu Tie
Keyword(s):  
Arabidopsis Thaliana ◽  
Shoot Apex ◽  
Double Mutant ◽  
Genetic Interaction ◽  
Homeobox Gene ◽  
The Other ◽  
Shoot Meristem ◽  
Published Data ◽  
Meristem Development ◽  
Shoot Meristemless

AbstractIn Arabidopsis, the genes SHOOT MERISTEMLESS (STM) and CLAVATA3 (CLV3) antagonistically regulate shoot meristem development. STM is essential for both development and maintenance of the meristem, as stm mutants fail to develop a shoot meristem during embryogenesis. CLV3, on the other hand, negatively regulates meristem proliferation, and clv3 mutants possess an enlarged shoot meristem. Genetic interaction studies revealed that stm and clv3 dominantly suppress each other’s phenotypes. STM works in conjunction with its closely related homologue KNOTTED1-LIKE HOMEOBOX GENE 6 (KNAT6) to promote meristem development and organ separation, as stm knat6 double mutants fail to form a meristem and produce a fused cotyledon. In this study, we show that clv3 fails to promote post-embryonic meristem formation in stm-1 background if we also remove KNAT6. stm-1 knat6 clv3 triple mutants result in early meristem termination and produce fused cotyledons similar to stm knat6 double mutant. Notably, the stm-1 knat6 and stm-1 knat6 clv3 alleles lack tissue in the presumed region of SAM. stm knat6 clv3 also showed reduced inflorescence size and shoot apex size as compared to clv3 single or stm clv3 double mutants. In contrast to previously published data, these data suggest that stm is epistatic to clv3 in postembryonic meristem development.HighlightSTM and KNAT6 genes determine post-embryonic meristem formation and activity in Arabidopsis. clv3 mutation is unable to rescue the stm knat6 meristemless phenotype.

scholarly journals Σχέσεις μεταξύ του ζευγαριού και οι αντιλήψεις τους για το δεσμό με τη μητέρα τους

2020 ◽  
Vol 21 (2) ◽  
pp. 183
Author(s):  
Ελένη Κυργερίδου ◽  
Παναγιώτα Βόρρια ◽  
Γρηγόρης Κιοσέογλου
Keyword(s):  
Romantic Relationships ◽  
Relationship Quality ◽  
Attachment Style ◽  
Adult Attachment ◽  
Close Relationships ◽  
Detrimental Effect ◽  
Dyadic Adjustment ◽  
The Other ◽  
Self Report ◽  
Dyadic Adjustment Scale

The current study examined the association between attachment style and adjustment in romantic relationships as well as the association between perceptions of adult attachment and adjustment in romantic relationships. 65 cohabitating couples aged from 21 to 32 years were recruited for the study. Couples completed the following self-report questionnaires: 1) Perceptions of Adult Attachment Questionnaire, PAAQ, Lichtenstein & Cassidy, 1991, 2) Experiences in Close Relationships Inventory, ECR, Brennan, Clark & Shaver, 1998 and 3) Dyadic Adjustment Scale, DAS, Spanier, 1976. Results showed that secure couples (both partners described themselves as securely attached) as well as mixed couples (one partner chose the secure description and the other defined himself or herself as insecure) reported higher relationship quality compared to both insecure couples (both partners described themselves as insecurely attached). Analyses aimed to test the links between early attachment experiences and marital relationship quality illustrated that both partners’ rejection from their mother in early childhood had a detrimental effect on women’s marital adjustment.

scholarly journals A new approach to assess the influence of road roughness on driver speed behavior based on driving simulator tests

2016 ◽  
Vol 11 (2) ◽  
pp. 144-152 ◽  
Author(s):  
Mariano Pernetti ◽  
Mauro D’Apuzzo Mauro D’Apuzzo ◽  
Francesco Galante
Keyword(s):  
Driving Simulator ◽  
Experimental Studies ◽  
Vertical Vibration ◽  
The Other ◽  
Added Value ◽  
Published Data ◽  
Vehicle Speed ◽  
Safety Level ◽  
The Road ◽  
Road Roughness

Vehicle speed is one of main parameters describing driver behavior and it is of paramount importance as it affects the travel safety level. Speed is, in turn, affected by several factors among which in-vehicle vibration may play a significant role. Most of speed reducing traffic calming countermeasures adopted nowadays rely on vertical vibration level perceived by drivers that is based on the dynamic interaction between the vehicle and the road roughness. On the other hand, this latter has to be carefully monitored and controlled as it is a key parameter in pavement managements systems since it influences riding comfort, pavement damage and Vehicle Operating Costs. There is therefore the need to analyse the trade-off between safety requirements and maintenance issues related to road roughness level. In this connection, experimental studies aimed at evaluating the potential of using road roughness in mitigating drivers’ speed in a controlled environment may provide added value in dealing with this issue. In this paper a new research methodology making use of a dynamic driver simulator operating at the TEST Laboratory in Naples is presented in order to investigate the relationship between the driver speed behavior on one hand, and the road roughness level, road alignment and environment, vehicle characteristics on the other. Following an initial calibration phase, preliminary results seem fairly promising since they comply with the published data derived from scientific literature.

scholarly journals Some Peculiarities of Variable Optical Spectra of 11 Low-Redshift Quasars

1994 ◽  
Vol 159 ◽  
pp. 518-518
Author(s):  
I.I. Pronik
Keyword(s):  
Seyfert Galaxy ◽  
Optical Spectra ◽  
The Other ◽  
Bench Mark ◽  
Published Data ◽  
First Report ◽  
Ngc 1275 ◽  
Very High ◽  
Calibration Coefficients ◽  
The Continuum

The flux of narrow 5007 Å [OIII] forbidden line during last 20 years is accepted as a bench-mark for calibration of the continuum and broad-lines fluxes in AGN. But one can not get away from the problem of the forbidden lines variability in these objects. The first report were published by Bardin et al. (1967). Some of the results are revieved by V. Pronik, I. Pronik (1988, 1992). There were 4 years monitoring of [OIII] fluxes variability in the Seyfert galaxy NGC 1275 nucleus (Pronik et al., 1990). Now we reexamine the published data of W. Zheng et al. (1986, 1987, 1988), discussed earlier in supposition of forbidden lines constant in spectra of 11 low-redshifted QSOs. Maximal calibration coefficients adopted by W. Zheng et al. in supposition of [OIII] lines constant were in the interval 2.0–3.6. On the other hand the fluxes errors are about 15%. Disagreement is very high. This is one of the arguments in the forbidden lines variability Tightness.

Embryo Development and Anatomy in Araucaria Juss

1983 ◽  
Vol 31 (2) ◽  
pp. 125 ◽  
Author(s):  
RJ Haines
Keyword(s):  
Embryo Development ◽  
Vascular Tissue ◽  
Mature Embryo ◽  
The State ◽  
Root Cap ◽  
The Other ◽  
Published Data ◽  
General Outline ◽  
Mature Embryos

Embryo development following suspensor elongation was studied in three species of Araucaria: A. cunninghamii, A. heterophylla and A. bidwillii. The mature embryos of these species were compared with those of A. hunsteinii and species for which published data are available. In general outline, the embryogeny of Araucaria resembles that described for a number of other conifers. Differences are evident among species of Araucaria with respect to the following features of the mature embryo: overall size; relative lengths of the cotyledons, hypocotyl and root cap; cotyledon number; the presence of stomates; the extent and arrangement of the vascular and secretory tissues; and the state of differentiation of the vascular tissue. Consideration of all these features lends some support to the generally recognized division of the genus into four sections, although there is some evidence to suggest a relationship between the Eutacta and Intermedia species, on one hand, and the Columbea and Bunya species, on the other.

Response of some tropical grasses to molybdenum application

1978 ◽  
Vol 18 (94) ◽  
pp. 732 ◽  
Author(s):  
C Johansen
Keyword(s):  
The Other ◽  
Published Data ◽  
Panicum Maximum ◽  
Growth Responses ◽  
Cenchrus Ciliaris ◽  
Total N ◽  
Tropical Grasses ◽  
Tropical Legumes ◽  
Setaria Sphacelata ◽  
Large Growth

The response to Mo application of Panicum maximum var. trichoglume cv. Gatton (panic), Cenchrus ciliaris cv. Biloela (buffel) and Setaria sphacelata cv. Nandi (setaria) was studied at three rates of NO3 supply in pots containing soil that was severely Mo deficient for tropical legumes. There were no growth responses of these grasses to Mo, except for a marginally significant effect in panic at the highest NO3 treatment at the first harvest. These results are compared with Mo responses of legume/grass mixtures in the field and published data showing large growth responses of some temperate grasses to Mo. Application of Mo had no effect on total N concentrations of grass tops but markedly decreased NO3-N concentrations in buffel. Setaria had a greater ability to take up Mo than the other grasses and this was associated with the lower NO3 levels in this species. Critical Mo concentrations for growth of all grasses were below 0.02 p.p.m.

A new species of Ferula (Apiaceae) from Malta

Phytotaxa ◽  
2018 ◽  
Vol 382 (1) ◽  
pp. 74 ◽  
Author(s):  
SALVATORE BRULLO ◽  
CRISTIAN BRULLO ◽  
SALVATORE CAMBRIA ◽  
GIANPIETRO GIUSSO DEL GALDO ◽  
CRISTINA SALMERI ◽  
...  
Keyword(s):  
New Species ◽  
Close Relationships ◽  
Morphological Analysis ◽  
The Other ◽  
Taxonomic Group ◽  
Herbarium Material ◽  
Reproductive Structures ◽  
Leaf Segments ◽  
A New Species ◽  
Shape And Size

Ferula melitensis, a new species from the Malta Archipelago, is described and illustrated. It belongs to the taxonomic group of F. communis, showing close relationships mainly with F. tunetana, F. arrigonii, F. communis s.str. and F. glauca, from which it differs in several features regarding the stem, leaves (mainly for shape and size of terminal segments), flowers and mericarps; other significant differences regard the ecology and phenology. The investigations, carried out on living plants, herbarium material and literature data, regard the morphological analysis of vegetative and reproductive structures, the anatomy of terminal leaf segments and mericarps, as well as the shape and size of seedlings. Previous phylogenetic approaches, based on nuclear and plastidial genome, have allowed to clarify better the relationships among F. melitensis and the other species of this group.

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