Fs Parameters Research Articles

Soil Requirements, Genetic Diversity and Population History of the Juniperus sabina L. Varieties in Europe and Asia

Trees and shrubs belonging to the genus Juniperus L. are pivotal species in arid and semiarid ecosystems in the Northern Hemisphere. However, unfavourable phenomena are observed in their populations due to global warming. We aimed to investigate the soil requirements, genetic diversity and population history of Juniperus sabina L. from Europe, Georgia, and Kyrgyzstan. Genetic resources were evaluated in 16 populations using nuclear microsatellites, while past demographic events were described based on the chloroplast DNA haplotypes. Seven chemical parameters in 36 soil samples from the European range of J. sabina were compared. In the studied area, three distinct phylogenetic lineages corresponding to different varieties of J. sabina, namely var. sabina, var. balkanensis, and the Asian variety, were revealed. Unimodal mismatch distributions and significantly negative Tajima’s D and Fu’s Fs parameters indicated that the sabina and balkanensis varieties underwent a population expansion. Microsatellite variation was moderate, potentially influenced by inbreeding, clonal propagation, and limited gene flow between populations. Bayesian clustering revealed five genetic groups. Compared to var. sabina, the balkanensis variety occupies areas with significantly higher potassium content in the soil, which probably mitigates the adverse effects of drought in its localities.

Comparative pharmacokinetic study on phenolic acids and flavonoids in normal and microcirculation dysfunction rats plasma by UPLC-TQ/MS/MS after oral administration of Salvia miltiorrhiza stem-leaf extracts

According to the Standard of Chinese Medicinal Materials of Shaanxi Province (2015 edition), Salvia miltiorrhiza caulis et folium is the dried stems and leaves of Salvia miltiorrhiza, which could activate blood and dispell blood stasis, clear the mind and remove annoyance. In this study, the dynamic absorption changes of phenolic acids (FS) and phenolic acids-flavonoids (FT) in rats after oral administration were studied by UPLC-TQ/MS/MS, to elucidate the pharmacokinetics of seven major bioactive components of the stem-leaf of Salvia miltiorrhiza in vivo. The results showed that the pharmacokinetic parameters of FS and FT were significantly different in normal rats and model rats. Compared with the control group, after injecting 10 % polymer dextran 500 into the tail vein to establish a model of microcirculation disturbance, the Cmax of caffeic acid decreased. The Cmax of rosmarinic acid and lithospermic acid increased. Danshensu showed a decrease in CLz/F, accompanied by an increase in both AUC0-t and AUC0-∞. The AUC0-t of lithospermic acid was also increased. These results indicated that microcirculation disturbance could decrease the absorption of caffeic acid while increasing the absorption of danshensu, rosmarinic acid and lithospermic acid. After oral administration of FT, the Cmax of danshensu and the AUC0-t of caffeic acid were increased significantly, suggesting that the presence of flavonoids may promote the absorption and exposure of phenolic acids in vivo. This study provides a reference for the elucidation of the in vivo substances and the mechanisms of action of FS and FT from the stem-leaf of Salvia miltiorrhiza.

Methods of assessing the seismic resistance of building structures and nuclear power plant structures in Lira-SAPR program

This article proposes a methodology for assessing seismic resistance and determining the reserve of seismic resistance, taking into account the interaction of the structure with the foundation for buildings and structures of power units, strength and deformation criterion of workability, etc. During verification calculation, three criteria of strength of workability, compiled according to the General principles of ensuring reliability and structural safety of buildings and structures, were considered. The seismic calculation was performed according to the linear-spectral theory of seismic resistance. In LIRA-SAPR program, considerationoftheinfluenceofthebaseisimplementedaccordingtoBuildingnorm DBN B.1.1-12-2014. Building Construction in seismic areas of Ukraine.
 The method of calculating the value of the ultimate seismic resistance of HCLPF and the method of constructing damage curves are proposed. To determine the integral parameter HCLPF, which characterizes the level of seismic resistance of this element, a calculation analysis of the seismic resistance of elements of operating nuclear power plants was carried out within the framework of the method of ultimate seismic resistance. The methodology and verification examples for determining the values of FS and HCLPF parameters for reinforced concrete structuresin LIRA-SAPR programare proposed.

Impact of radiocesium contamination in flood sediment deposited after the 2019 typhoon on decontaminated fields of Fukushima Prefecture, Japan

Sediment that has deposited after the flood generated by the 2019 typhoon (referred to as Flood Sediment, FS) was collected along two rivers in eastern Fukushima Prefecture, Japan to determine the total and exchangeable radiocesium ( 137 Cs), and acid-extractable potassium (K) contents. Then, these FS parameters were compared with those of decontaminated soils (DS) in nearby agricultural fields to discuss the potential transfer risk of 137 Cs from rivers to nearby remediated soils. While FS had about four times higher total 137 Cs content, it showed a three-times lower exchangeable 137 Cs content than DS. Furthermore, acid-extractable K referred to as non-exchangeable K (Nex-K) content was high enough to restrict 137 Cs transfer from soil to crops for both FS and DS. From these comparisons, we concluded that deposition of FS onto DS may not increase the transfer of 137 Cs from soil to crops.

Slope Erosion and Hydraulics during Thawing of the Sand-Covered Loess Plateau

Seasonal freeze-thaw processes have led to severe soil erosion globally. Slopes are particularly susceptible to changes in runoff, it can be useful to study soil erosion mechanisms. We conducted meltwater flow laboratory experiments to quantify the temporal and spatial distribution of hydraulic parameters on sandy slopes in relation to runoff and sediment yield under constant flow, different soil conditions (unfrozen slope: US; frozen slope: FS), and variable sand thickness. The results showed that sand can prolong initial runoff time, and US and FS have significantly different initial runoff times. There was a significant linear relationship between the cumulative runoff and the cumulative sediment yield. Additionally, hydrodynamic parameters of US and FS varied with time and spatially, as the distance between US and FS is linearly related to the top of the slope. We found that the main runoff flow pattern was composed of laminar flow and supercritical flow. There was a significant linear relationship between flow velocity and hydraulic parameters. The flow velocity is the best hydraulic parameter to simulate the trend of slope erosion process. This study can provide a scientific basis for a model of slope erosion during thawing for the Loess Plateau.

Comparative Analysis of Leukocyte Clustering Algorithms According to FS and SS Parameters in a Cytofluorimetric Blood Test

Comparative Analysis of Leukocyte Clustering Algorithms According to FS and SS Parameters in a Cytofluorimetric Blood Test

Population pharmacokinetics of two recombinant human coagulation factor Ⅷ preparations in patients with hemophilia A

目的比较两种重组人凝血因子Ⅷ（FⅧ）制剂拜科奇（Kogenate® FS）与百因止（Advate®）在血友病A患者中的群体药代动力学差异，以期为血友病A患者精准个体化治疗提供理论依据。方法以WAPPS-Hemo项目中自2015年1月至2017年12月共纳入全球41个血友病中心至少接受过1次拜科奇或百因止注射的中间型/重型血友病A患者作为研究对象。计算两种FⅧ制剂的半衰期以及FⅧ活性到达2%的时间（TAT2%），并进一步分析不同年龄层和不同注射剂量下两种药物的药代动力学差异。结果①拜科奇组117例，平均年龄为（27.6±17.7）岁；百因止组120例，平均年龄为（23.4±16.2）岁。两组患者均为男性。②拜科奇组、百因止组给药剂量分别为（31.5±13.1）IU/kg、（38.17±14.83）IU/kg，半衰期分别为（12.3±3.5）h、（10.8±2.9）h，TAT2%分别为（65.2±21.7）h、（57.0±17.9）h。③拜科奇组中≥12岁、<12岁患者的半衰期分别为（12.7±3.7）h、（11.1±2.5）h，TAT2%分别为（68.6±22.9）h、（55.8±14.6）h；百因止组中≥12岁、<12岁患者的半衰期分别为（11.4±3.1）h、（9.4±1.8）h，TAT2%分别为（61.1±18.0）h、（45.2±11.3）h。④拜科奇组中<20 IU/kg、20~29 IU/kg、30~39 IU/kg、≥40 IU/kg剂量组的半衰期分别为（13.3±4.0）h、（12.3±3.6）h、（12.2±3.5）h、（11.6±2.6）h，TAT2%分别为（61.5±21.4）h、（63.9±22.4）h、（67.0±24.3）h、（68.0±19.5）h；百因止组中<20 IU/kg、20~29 IU/kg、30~39 IU/kg、≥40 IU/kg剂量组的半衰期分别为（11.5±3.8）h、（11.4±3.7）h、（11.0±2.9）h、（10.4±2.3）h，TAT2%分别为（50.8±19.2）h、（56.7±21.0）h、（58.2±18.8）h、（58.1±15.8）h。结论在不同年龄组和不同注射剂量组，拜科奇的药代动力学参数均优于百因止。

Abstract 469: Transient Introduction of miR-294 in the Heart Promotes Cardiomyocyte Cell Reentry After Injury

Rationale: Embryonic heart is characteristic of rapidly dividing cardiomyocytes required to build a working myocardium. Cardiomyocytes retain some proliferative capacity in the neonates but lose most of it in adulthood. Consequently, a number of signaling hubs including microRNAs are altered during cardiac development. Embryonic stem cell cycle (ESCC) miRs are a class of microRNAs exclusively expressed during developmental stages but their effect on cardiomyocyte proliferation and heart function has not been previously studied. Objective: To determine whether miR-294 promotes cardiomyocyte cell cycle reentry enhancing cardiac repair after myocardial infarction. Methods and Results: miR expression analysis in the heart during development revealed elevated levels of miR-294 in the prenatal stages but was lost in the neonate and adult heart as confirmed by qRT-PCR and in situ hybridization. Neonatal ventricular cardiomyocytes (NRVMs) treated with miR-294 mimic showed elevated expression of Ki67 (7-fold), p-histone 3 (7.5-fold) and Aurora B kinase (11.8 fold) as confirmed by immunocytochemistry compared to control cells. Similar results were confirmed in adult cardiomyocytes with p-histone staining and mRNA analysis. Moreover, miR-294 enhanced oxidative phosphorylation and glycolysis in NRVMs as measured by seahorse assay. Mechanistically, array analysis revealed upregulation of cell cycle markers including blunting of negative regulators as confirmed by qRT-pCR and immunoblot analysis. Next, an inducible miR-294 AAV-9-αMHC vector was delivered to mice fed dox chow for 2 wks following myocardial infarction. Increased EF, FS and hemodynamic parameters together with decreased infarct size and apoptosis was observed 8 wks after MI. Myocyte proliferation increased in miR-294 hearts analyzed by Ki67, p-H3 and AurB expression parallel to increase in small myocyte number in the heart. Isolated adult myocytes from miR-294 hearts showed increased EdU+ cells and upregulation of cell cycle markers/miR targets 8 wks after MI. Conclusion: Ectopic expression of miR-294 recapitulates developmental signaling and phenotype in cardiomyocyte promoting cell cycle reentry that leads to augmented cardiac function in mice after myocardial infarction.

Population genetic structure of Diaphorina citri Kuwayama (Hemiptera: Liviidae): host-driven genetic differentiation in China

The Asian citrus psyllid Diaphorina citri Kuwayama is a major pest in citrus production, transmitting Candidatus Liberibacter asiaticus. It has spread widely across eastern and southern China. Unfortunately, little is known about the genetic diversity and population structure of D. citri, making pest control difficult. In this study, nine specifically developed SSR markers and three known mitochondrial DNA were used for population genetics study of D. citri using 225 samples collected from all 7 distribution regions in China. Based on the SSR data, D. citri was found highly diverse with a mean observed heterozygosity of 0.50, and three subgroups were structured by host plant: (i) Shatangju, NF mandarin and Ponkan; (ii) Murraya paniculata and Lemon; (iii) Citrus unshiu, Bingtangcheng, Summer orange and Navel. No significant genetic differences were found with mtDNA data. We suggested the host-associated divergence is likely to have occurred very recently. A unimodal distribution of paired differences, the negative and significant Tajima’s D and Fu’s FS parameters among mtDNA suggested a recent demographic expansion. The extensive citrus cultivation and increased suitable living habitat was recommended as a key for this expansion event.

Genetic homogeneity between populations of cotton bollworm from Xinjiang, China

We studied the population structure of cotton bollworm (CBW), Helicoverpa armigera (Hübner) (Lepidoptera: Noctuidae), in Xinjiang, the largest cotton-growing region in China, using a fragment of cytochrome c oxidase subunit I (COI) gene. Alignments of all 192 COI sequences revealed 28 haplotypes including 23 in southern Xinjiang, 5 in eastern Xinjiang and 13 in northern Xinjiang. Negative and significant values of neutrality tests for the Tajima's D and Fu's FS parameters, combined with the high values of haplotype diversity (Hd), low values of nucleotide diversity (π) and a high number of low frequency haplotypes indicated a recent demographic expansion of Xinjiang CBW populations. Analysis of molecular variation (AMOVA) indicated low and non-significant genetic structure, regardless of geographical scale or crop, with most of genetic variation occurring within local CBW populations. Pairwise FST analyses also indicated low genetic differentiation. This demographic event and high gene flow could be responsible for the low genetic structure currently found. CBW populations in Xinjiang need to be considered as one panmictic unit in its management, especially for the design of refuges to delay the development of resistance by this migratory pest to transgenic Bt (Bacillus thuringiensis) cotton.

Multiaxial Cycle Deformation and Low-Cycle Fatigue Behavior of Mild Carbon Steel and Related Welded-Metal Specimen

The low-cycle fatigue experiments of mild carbon Q235B steel and its related welded-metal specimens are performed under uniaxial, in-phase, and 90° out-of-phase loading conditions. Significant additional cyclic hardening for 90° out-of-phase loading conditions is observed for both base metal and its related weldment. Besides, welding process produces extra additional hardening under the same loading conditions compared with the base metal. Multiaxial low-cycle fatigue strength under 90° out-of-phase loading conditions is significantly reduced for both base-metal and welded-metal specimens. The weldment has lower fatigue life than the base metal under the given loading conditions, and the fatigue life reduction of weldment increases with the increasing strain amplitude. The KBM, FS, and MKBM critical plane parameters are evaluated for the fatigue data obtained. The FS and MKBM parameters are found to show better correlation with fatigue lives for both base-metal and welded-metal specimens.

Electrocardiographic, echocardiographic, and indirect blood pressure evaluation in dogs subjected to different sedation protocols

ABSTRACT: The present study aimed to evaluate the effects of different sedation protocols on blood pressure and echocardiographic and electrocardiographic parameters in dogs. In total, 24 male mixed-breed dogs with a mean weight of 9.87±3.0kg were used.Animals were randomly divided into four groups (n=6), which were subjected to sedation using the following protocols: acepromazine (0.05mgkg-1) and butorphanol (0.3mgkg-1) (AB); acepromazine (0.05mgkg-1)and methadone (0.5mgkg-1) (AM); acepromazine (0.03mgkg-1), methadone (0.5mgkg-1), and midazolam (0.3mgkg-1)(MAM); and methadone only (0.5mgkg-1) (M). Indirect blood pressure (BP) measurements and computerized electrocardiography (ECG) and echocardiography (ECO) were performed immediately before the application of the sedation protocol (baseline), and the same evaluations were repeated after 15 minutes. BP decreased in groups AB, MAM, and AM compared to baseline values. Electrocardiographic measurements showed decreased heart rates (HRs) after sedation in all groups, and bradycardia was observed after sedation in two dogs from group M and one animal from group AM. The P-wave duration increased after sedation in groups AM and M. After sedation, no changes in cardiac dimensions were revealed byECO.Fractional shortening (FS) decreased after sedation in the AM group, and dogs from group AB exhibited a smaller decrease in FS compared with the other groups. The cardiac index (CI) was lower in groups AM and M than in the other groups. Animals from group AB were less resistant to examination and exhibited the most favorable sedation scores. It was concluded that the combination of acepromazine and butorphanol was the best sedation protocol for performing echocardiogram measurementsbecause dogs were less resistant to examinations and echocardiographic parameters of FS and CI remained stable.

Extended analysis of the system of even configurations of Ta II

We performed a parametric study of the fine (fs) and hyperfine structure (hfs) for the even parity configurations of ionized tantalum (Ta II) using improved experimental fs and hfs data for 88 levels. A multi-configuration fitting procedure was performed for 47 configurations taking into account second-order perturbation theory including the effects of closed to open shell excitations. The fs and hfs parameters were calculated. Predicted values of level energies up to 86000cm−1 are given, as well as gJ-Landé factors, magnetic dipole and electric quadrupole hyperfine structure constants A and B, when no experimental values are available.

Fine Structure Analysis of the Configuration System of V II. Part I: Even-Parity Levels

Using a linked-parameter technique of level-fitting calculations in a multi configuration basis, a parametric analysis of fine structure (fs) for even-parity levels of V II, involving six configurations, has been performed. This led us to exchange the assignments of two triplets, 3d3(2F)4s c 3F and 3d4 d 3F, reported in earlier analyses as being located at 30,300 cm-1 and 30,600 cm-1, respectively. This is confirmed by experimental hyperfine structure (hfs) A constants, used as fingerprints. Moreover, the current singlet 3d24s2 1D2 position is likely too high. The fs parameters, magnetic Lande g-factors, and the percentage of leading eigenvectors of levels are calculated. We present also predicted singlet, triplet and quintet positions for missing experimental levels up to 100,000 cm-1. The single-electron hfs parameters are determined in their entirety for 51V II for the model space (3d + 4s)4 with good accuracy. For the model space (3d + 4s)4 of 51V II the single-electron hfs parameters are computed; furthermore, our achieved theoretical evaluations of the single-electron hfs parameters, thanks to the use of ab initio calculations, reinforce the validity of these hfs parameter values, deduced from experimental data.

Thermal equation of state of synthetic orthoferrosilite at lunar pressures and temperatures

Iron-rich orthopyroxene plays an important role in models of the thermal and magmatic evolution of the Moon, but its density at high pressure and high temperature is not well-constrained. We present in situ measurements of the unit-cell volume of a synthetic polycrystalline end-member orthoferrosilite (FeSiO3, fs) at simultaneous high pressures (3.4–4.8 GPa) and high temperatures (1,148–1,448 K), to improve constraints on the density of orthopyroxene in the lunar interior. Unit-cell volumes were determined through in situ energy-dispersive synchrotron X-ray diffraction in a multi-anvil press, using MgO as a pressure marker. Our volume data were fitted to a high-temperature Birch–Murnaghan equation of state (EoS). Experimental data are reproduced accurately, with a \(\varDelta P\) standard deviation of 0.20 GPa. The resulting thermoelastic parameters of fs are: V0 = 875.8 ± 1.4 A3, K0 = 74.4 ± 5.3 GPa, and \(\frac{{\text d}K}{{\text d}T} = -0.032 \pm 0.005\,\hbox{GPa K}^{-1}\), assuming \({K}^{\prime}_{0} = 10 \). We also determined the thermal equation of state of a natural Fe-rich orthopyroxene from Hidra (Norway) to assess the effect of magnesium on the EoS of iron-rich orthopyroxene. Comparison between our two data sets and literature studies shows good agreement for room-temperature, room-pressure unit-cell volumes. Preliminary thermodynamic analyses of orthoferrosilite, FeSiO3, and orthopyroxene solid solutions, (Mg1−xFex) SiO3, using vibrational models show that our volume measurements in pressure–temperature space are consistent with previous heat capacity and one-bar volume–temperature measurements. The isothermal bulk modulus at ambient conditions derived from our measurements is smaller than values presented in the literature. This new simultaneous high-pressure, high-temperature data are specifically useful for calculations of the orthopyroxene density in the Moon.

Relationship of Echocardiographic Measurements and Velocity at Maximum Heart Rate Measured During Prerace Training Period in Thoroughbred Horses

The objective of this study was to investigate in Thoroughbreds, the relation between the development of the heart at prerace period and the velocity at maximum heart rate (VHRmax) between the 24th and 28th month before starting to race. Twenty-one Thoroughbreds (11 female, 10 male) were used in this study. The echocardiographic data were obtained from the short-axis view in guided M-mode, at 4-month intervals until the 24th month after birth. The VHRmax was measured monthly from the 24th to the 28th month by E-Trakka. Linear regression analyses were performed between echocardiographic parameters and VHRmax values at 24 and 28 months after birth. The results indicated that left ventricular internal diameter in diastole at 12 months (LVIDD12) tended to be negatively correlated with VHRmax measured at the 24th month (P = .098). However, ejection fraction (EF12) (P = .061) and fractional shortening (FS12) (P = .056) values tended to be positively correlated with VHRmax measured at the 24th month (VHRmax24). There was a tendency toward negative correlation between interventricular septal thickening percentage (IVST%) measured 1 month after birth and VHRmax measured at the 28th month (VHRmax28) (P = .079). In contrast, there were positive correlations between mean wall thickness of 4 months (MWT4), relative wall thickness of 4 months (RWT4), and VHRmax28 (P < .05). EF16 and FS16 tended to be correlated with VHRmax28. Furthermore, EF and FS parameters measured in 20 months after birth (EF20 and FS20) were correlated with VHRmax28 (P < .05). There was a tendency toward a positive correlation between the left ventricular muscle mass of horses at 24 months of age (LVM24) and VHRmax28 (P = .097). In addition, mean wall thickness of 24 (MWT24) months and relative wall thickness of 24 months (RWT24) were significantly correlated with VHRmax28 (P < .05). In this study, we observed a relationship between some echocardiographic parameters measured during developmental period and VHRmax measured during prerace training period. Because VHRmax is related to athletic potential, echocardiographic parameters measured at early ages may be used as selection criteria.

Transpiração em mangueira pelo método Granier

Objetivou-se, com esse trabalho avaliar o método Granier (sonda de dissipação térmica) para a cultura da manga quanto à viabilidade de uso em condições de campo e ajustar a equação de determinação do fluxo de seiva com base em medidas lisimétricas, iniciando-se com três mudas da variedade Tommy Atkins, plantadas em vasos que, colocados sobre plataforma de pesagem, funcionaram como lisímetros. A área condutora do caule (AS) foi determinada por meio da aplicação de corantes. Medidas de transpiração por lisimetria nas plantas foram realizadas em vaso e estimativas do fluxo de seiva com sonda de dissipação térmica (SDT). Em um ramo de planta adulta foram instaladas uma sonda de dissipação térmica e um sensor de balanço de calor caulinar. Os resultados demonstraram que, usando os coeficientes originais da equação de Granier, o método subestima em 31% o fluxo de seiva (FS) diário em relação à transpiração medida pelos lisímetros; modificando os parâmetros empíricos da equação FS = 0,00017k1,231AS o desvio médio apresentado foi de -1,4%, com boa precisão (R² = 0,89). O método da SDT e balanço de calor caulinar apresentaram boa concordância entre os valores.

Population structure and history of a phenotypically variable teiid lizard (Ameiva chrysolaema) from Hispaniola: the influence of a geologically complex island

Ameiva chrysolaema is distributed across the island of Hispaniola in the West Indies. The species is restricted to dry lowlands between major mountain ranges and along the southern and eastern coasts. Phylogenetic and phylogeographic analyses of mtDNA sequence variation from 14 sampling localities identify at least three independent evolutionary lineages, separated from one another by major mountain ranges. Nested clade phylogeographic analysis (NCPA) suggests a complex history of population fragmentation, consistent with geological evidence of seawater incursions into the Azua and Enriquillo basins during the Pliocene/Pleistocene (∼1.6mya). Significantly negative Fu's FS values and parameters of mismatch distributions suggest that formerly fragmented populations have recently expanded their ranges. Significantly large average population clade distances (APCD) for two sampling localities in the Azua basin suggest secondary contact at these localities of previously separated populations. The distribution of haplotypes among polymorphic populations of A. chrysolaema suggests that variation in dorsal pattern represents a polymorphism within evolutionary lineages. Ameiva leberi is ecologically indistinguishable from and syntopic with A. chrysolaema. Genetic data suggest that A. leberi is a junior synonym of A. chrysolaema.

00/02012 Feasibility study on liquefaction of plastic wastes - an application for northern Shikoku

Ameiva chrysolaema is distributed across the island of Hispaniola in the West Indies. The species is restricted to dry lowlands between major mountain ranges and along the southern and eastern coasts. Phylogenetic and phylogeographic analyses of mtDNA sequence variation from 14 sampling localities identify at least three independent evolutionary lineages, separated from one another by major mountain ranges. Nested clade phylogeographic analysis (NCPA) suggests a complex history of population fragmentation, consistent with geological evidence of seawater incursions into the Azua and Enriquillo basins during the Pliocene/Pleistocene (∼1.6 mya). Significantly negative Fu's FS values and parameters of mismatch distributions suggest that formerly fragmented populations have recently expanded their ranges. Significantly large average population clade distances (APCD) for two sampling localities in the Azua basin suggest secondary contact at these localities of previously separated populations. The distribution of haplotypes among polymorphic populations of A. chrysolaema suggests that variation in dorsal pattern represents a polymorphism within evolutionary lineages. Ameiva leberi is ecologically indistinguishable from and syntopic with A. chrysolaema. Genetic data suggest that A. leberi is a junior synonym of A. chrysolaema.

Fine structure parametric analysis of the

The aim of the present work is a reanalysis of the fine structure (fs) of the lower levels up to 24000 cm -1 on the basis of the two lowest configurations of uranium without a truncation of the core in the case of the second configuration. This interpretation has been performed using Cowan's code which can manage such configurations without restriction. The average deviation of 53 cm -1 for 155 experimental values demonstrates a good quality of the fs fit. All fs parameters are in good agreement with theoretical predictions and existing empirical values and are obtained with a good precision (< 10%).