scholarly journals Genetic diversity in two threatened species of guitarfish (Elasmobranchii: Rhinobatidae) from the Brazilian and Argentinian coasts: an alert for conservation

2021 ◽  
Vol 19 (2) ◽  
Author(s):  
Vanessa P. Cruz ◽  
Aisni M.C. L. Adachi ◽  
Pablo H. Oliveira ◽  
Giovana S. Ribeiro ◽  
Fabilene G. Paim ◽  
...  
Keyword(s):  
Migration Rate ◽  
Nucleotide Diversity ◽  
Northern Coast ◽  
Demographic Analysis ◽  
Mitochondrial Dna Control Region ◽  
High Migration Rate ◽  
D Loop ◽  
The Mean ◽  
High Migration ◽  
Threatened Status

Abstract The guitarfishes Pseudobatos horkelii and Pseudobatos percellens meet the criteria for threatened status as Critically Endangered (CR) and Endangered (EN), respectively. Both species occur in the Southern Atlantic Ocean. Considering the lack of data on the genetic structure of these species, the present study evaluated the genetic variability and population structure of the P. horkelii and P. percellens in the southern region of Brazil and the northern coast of Argentina, based on sequences of mitochondrial DNA, Control Region (D-loop). Samples of P. horkelii (n = 135) were analyzed in six localities situated in Northern Argentina, along the Brazilian states’ coast. The mean of nucleotide diversity was 0.0053, the ΦST was 0.4277 and demographic analysis of P. horkelii suggests the existence of stability of the populations, with D = 0.9929, FS = 2.0155, SSD = 0.0817, R = 0.2153. In P. percellens (n = 101) were analyzed from six Brazilian localities along the coast of Santa Catarina, Paraná, and São Paulo. The mean nucleotide diversity was 0.0014 and ΦST value of 0.2921, the demographic analysis indicates a high migration rate of P. percellens among the localities evaluated, with D = 0.5222, FS = 0.3528, SSD = 0.01785, R = 0.3890.

Ten year follow-up of pyrocarbon implants for proximal interphalangeal joint replacement

2014 ◽  
Vol 39 (6) ◽  
pp. 582-586 ◽  
Author(s):  
L. Reissner ◽  
S. Schindele ◽  
S. Hensler ◽  
M. Marks ◽  
D. B. Herren
Keyword(s):  
Visual Analogue Scale ◽  
Migration Rate ◽  
Analogue Scale ◽  
Clinical Results ◽  
Proximal Interphalangeal Joint ◽  
Interphalangeal Joint ◽  
High Migration Rate ◽  
The Mean ◽  
High Migration

Results of anatomical resurfacing of the proximal interphalangeal joint using pyrocarbon implants showed reasonable clinical results with a high radiographic migration rate. The aim was to investigate the subjective, clinical, and radiographic results 10 years following surgery, and to compare them with our 2-year follow-up data. We re-evaluated 12 patients with 15 proximal interphalangeal implants on average 9.7 years after surgery. Pain significantly improved from 7.6 on a visual analogue scale pre-operatively to 1.4 at 2 years, and to 0.7 at the final follow-up. The mean total range of motion in all replaced joints was 36° pre-operatively and 39° at the 2-year follow-up, but had decreased significantly to 29° at 10 years. We saw one implant migration in addition to the eight migrated implants we already found 2 years after surgery. The moderate clinical results, combined with the high migration rate, mean that we no longer use this kind of implant.

scholarly journals Characteristics and spread to the native population of HIV-1 non-B subtypes in two European countries with high migration rate

2015 ◽  
Vol 15 (1) ◽  
Author(s):  
Kenny Dauwe ◽  
Virginie Mortier ◽  
Marlies Schauvliege ◽  
Annelies Van Den Heuvel ◽  
Katrien Fransen ◽  
...  
Keyword(s):  
Migration Rate ◽  
European Countries ◽  
Native Population ◽  
High Migration Rate ◽  
High Migration ◽  
Hiv 1

LETTERS TO THE EDITOR

PEDIATRICS ◽  
1964 ◽  
Vol 33 (3) ◽  
pp. 467-467
Keyword(s):  
Migration Rate ◽  
Health Departments ◽  
State Health ◽  
Letters To The Editor ◽  
High Migration Rate ◽  
High Migration

Many of the dropouts from our study were due to the inherent high migration rate among the families. As stated in the paper, an attempt was made to trace these families by writing to all 50 state health departments who answered but did not report deaths among study infants. Admittedly the statistical appraisal of our figures is compromised by the dropouts. However, the fact that there were no additional deaths reported to us would confirm the trend in favor of the GG group. The disproportionate loss of babies in the two groups, as explained in the paper, was accounted for by painful injections. This reaction was undoubtedly greater in the infants receiving the placebo as determined once the code was broken.

High migration rate of two types of threaded acetabular cups

2004 ◽  
Vol 124 (1) ◽  
pp. 17-25 ◽  
Author(s):  
Bernd Fink ◽  
Michael Protzen ◽  
Nils Hansen-Algenstaedt ◽  
J�rgen Berger ◽  
Wolfgang R�ther
Keyword(s):  
Migration Rate ◽  
High Migration Rate ◽  
High Migration

scholarly journals Inhabit the Change: Circular Design & Lot

2021 ◽  
Vol 4 (2) ◽  
pp. p106
Author(s):  
Valentina Palco ◽  
Ester R. Mussari
Keyword(s):  
Migration Rate ◽  
State Of The Art ◽  
Urban Centers ◽  
Housing Reform ◽  
Economic Changes ◽  
High Migration Rate ◽  
The One ◽  
Short Time ◽  
Circular Design ◽  
High Migration

To solve the problems associated with precarious contemporary housing, it is essential to intervene with structural housing reform. Therefore, it is necessary to start from semantics and read space on the one hand, as a moment where history, traditions and culture meet; on the other hand, as a key to overcome obstacles and general obsolescence.The state of the art includes: repetition of self-built and unregulated low-quality typologies, high migration rate, and socio-economic changes; the consequences are: low-quality buildings, overcrowded or uninhabited urban centers, obsolete spatiality. Today, the challenge is to design in a short time and with high qualitative standards, without giving in to hypertechnology but finding a balancing strategy. It is a matter of anticipating what cannot be expected, and responding to the multitude of ever-changing needs inherent to an atypical user.“Inhabiting” in this perspective must be increasingly “smart and sustainable”. This is done through interactive design, which increasingly uses digitized services and connects objects and people. The goal is to move towards DfD, «Design for Disassembly», through “change” as a paradigm, and the solution is in our homes.

scholarly journals Hierarchical Analysis of Nucleotide Diversity in Geographically Structured Populations

Genetics ◽  
1996 ◽  
Vol 142 (2) ◽  
pp. 629-639 ◽  
Author(s):  
Kent E Holsinger ◽  
Roberta J Mason-Gamer
Keyword(s):  
Nucleotide Diversity ◽  
Restriction Site ◽  
Rooted Tree ◽  
Structured Populations ◽  
Hierarchical Analysis ◽  
Restriction Site Variation ◽  
Hierarchical Levels ◽  
Site Variation ◽  
The Mean ◽  
Mean Time

Abstract Existing methods for analyzing nucleotide diversity require investigators to identify relevant hierarchical levels before beginning the analysis. We describe a method that partitions diversity into hierarchical components while allowing any structure present in the data to emerge naturally. We present an unbiased version of Nei's nucleotide diversity statistics and show that our modification has the same properties as Wright's  F  ST. We compare its statistical properties with several other F  ST estimators, and we describe how to use these statistics to produce a rooted tree of relationships among the sampled populations in which the mean time to coalescence of haplotypes drawn from populations belonging to the same node is smaller than the mean time to coalescence of haplotypes drawn from populations belonging to different nodes. We illustrate the method by applying it to data from a recent survey of restriction site variation in the chloroplast genome of Coreopsis grandiflora.

scholarly journals Genetic diversity study in Hungarian coldblooded horses

2017 ◽  
pp. 29-34
Author(s):  
Nikolett Csizmár ◽  
Sándor Mihók ◽  
András Jávor ◽  
Szilvia Kusza
Keyword(s):  
High Performance ◽  
Nucleotide Diversity ◽  
Base Pairs ◽  
Loop Region ◽  
Horse Breeding ◽  
D Loop ◽  
Hungarian Population ◽  
Genetic Diversity Study ◽  
Feeding Technology ◽  
Diversity Study

Because of the feeding technology innovation, accelerated transport and communication facilities breeds of high performance breeds replaced local autochone breeds worldwide. These latter species however have an important role in gene conservation. Hungarian cold-blooded horse breeding stock are lacking pedigree, the actual founder breed mares are not known. For this reason, it is an major priority defining the genetic backround of the existing flock, for that breeding could operate with purposeful using of origin maternal founders. In the present study 195 cold-blooded Hungarian mares tail and mane sample were analized. Our analysis was carried out between 15531–15752 base pairs in mithocrondial DNA D-loop region, which reported a total of 222 base pairs. Fourtyone polymorphic sites were determined, which resulted in 39 haplotypes (h=39). The average pairwise differences were k=6.825. High haplotype and nucleotide diversity values were observed (Hd=0.968±0.003, π=0.026±0.003). Based on the previously defined variable positions of haplotypes defined by Jansen et al (2002), we groupped our haplotypes into haplogroups. 23 percent of the studied population (45 mares) belonged to haplogroup F1. Nearly 97% of the analyzed population was classified into one of eight  haplogroups defined by Jansen.et al. (2002). This study gives genetic information nearly 25% of the Hungarian population. Another possibility would be patterning more mares or involving more genetic marker in the study which will assuming the possibility of a more comprehensive analysis.

scholarly journals Exceptionally High 2018 Equilibrium Line Altitude on Taku Glacier, Alaska

2019 ◽  
Vol 11 (20) ◽  
pp. 2378 ◽  
Author(s):  
Mauri Pelto
Keyword(s):  
Satellite Imagery ◽  
Research Program ◽  
Migration Rate ◽  
Field Data ◽  
Ablation Rate ◽  
Equilibrium Line ◽  
Equilibrium Line Altitude ◽  
The Mean ◽  
First Time ◽  
Annual Balance

The Juneau Icefield Research Program (JIRP) has been examining the glaciers of the Juneau Icefield since 1946. The height of the transient snowline (TSL) at the end of the summer represents the annual equilibrium line altitude (ELA) for the glacier, where ablation equals accumulation. On Taku Glacier the ELA has been observed annually from 1946 to 2018. Since 1998 multiple annual observations of the TSL in satellite imagery identify both the migration rate of the TSL and ELA. The mean ELA has risen 85 ± 10 m from the 1946–1985 period to the 1986–2018 period. In 2018 the TSL was observed at: 900 m on 5 July; 975 m on 21 July; 1075 m on 30 July; 1400 m on 16 September; and 1425 m on 1 October. This is the first time since 1946 that the TSL has reached or exceeded 1250 m on Taku Glacier. The 500 m TSL rise from 5 July to 30 July, 8.0. md−1, is the fastest rate of rise observed. This combined with the observed balance gradient in this region yields an ablation rate of 40–43 mmd−1, nearly double the average ablation rate. On 22 July a snow pit was completed at 1405 m with 0.93 m w.e. (water equivalent), that subsequently lost all snow cover, prior to 16 September. This is one of eight snow pits completed in July providing field data to verify the ablation rate. The result of the record ELA and rapid ablation is the largest negative annual balance of Taku Glacier since records began in 1946.

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