Spin Effects in Two Quark System and Mixed States

Based on the numeric solution of a system of coupled channels for vector mesons ($S$- and $D$-waves mixing) and for tensor mesons ($P$- and $F$-waves mixing) mass spectrum and wave functions of a family of vector mesons $q\bar{q}$ in triplet states are obtained. The calculations are performed using a well known Cornell potential with a mixed Lorentz-structure of the confinement term. The spin-dependent part of the potential is taken from the Breit-Fermi approach. The effect of singular terms of potential is considered in the framework of the perturbation theory and by a configuration interaction approach (CIA), modified for a system of coupled equations. It is shown that even a small contribution of the $D$-wave to be very important at the calculation of certain characteristics of the meson states.Comment: 12 pages, LaTe

Examining the Role of Mood Patterns in Predicting Self-reported Depressive Symptoms

Depression is the leading cause of disability worldwide. Initial efforts to detect depression signals from social media posts have shown promising results. Given the high internal validity, results from such analyses are potentially beneficial to clinical judgment. The existing models for automatic detection of depressive symptoms learn proxy diagnostic signals from social media data, such as help-seeking behavior for mental health or medication names. However, in reality, individuals with depression typically experience depressed mood, loss of pleasure nearly in all the activities, feeling of worthlessness or guilt, and diminished ability to think. Therefore, a lot of the proxy signals used in these models lack the theoretical underpinnings for depressive symptoms. It is also reported that social media posts from many patients in the clinical setting do not contain these signals. Based on this research gap, we propose to monitor a type of signal that is well-established as a class of symptoms in affective disorders -- mood. The mood is an experience of feeling that can last for hours, days, or even weeks. In this work, we attempt to enrich current technology for detecting symptoms of potential depression by constructing a 'mood profile' for social media users.Comment: Accepted at The Web Science Conference 202

Proteolysis of Human Thrombin Generates Novel Host Defense Peptides

The coagulation system is characterized by the sequential and highly localized activation of a series of serine proteases, culminating in the conversion of fibrinogen into fibrin, and formation of a fibrin clot. Here we show that C-terminal peptides of thrombin, a key enzyme in the coagulation cascade, constitute a novel class of host defense peptides, released upon proteolysis of thrombin in vitro, and detected in human wounds in vivo. Under physiological conditions, these peptides exert antimicrobial effects against Gram-positive and Gram-negative bacteria, mediated by membrane lysis, as well as immunomodulatory functions, by inhibiting macrophage responses to bacterial lipopolysaccharide. In mice, they are protective against P. aeruginosa sepsis, as well as lipopolysaccharide-induced shock. Moreover, the thrombin-derived peptides exhibit helical structures upon binding to lipopolysaccharide and can also permeabilize liposomes, features typical of “classical” helical antimicrobial peptides. These findings provide a novel link between the coagulation system and host-defense peptides, two fundamental biological systems activated in response to injury and microbial invasion

Carry-over effect of gibberellins (GA 4/7

The second year after treatment effect of gibberellins (GA4/7) and ringing on increased female flowering was observed in 13-year-old full-sibs of Norway spruce. This carry-over effect was exhibited independently by GA4/7 and ringing. GA4/7 significantly increased and ringing significantly decreased height growth increment of trees in a year of flower bud initiation. The influence of GA4/7 and ringing on flower initiation and height increment is discussed.Effets différés des gibbérellines 4/7 et de l'annélation sur la floraison femelle de semis d'épicéa commun (Picea abies (L) Karst). Deux années après traitement l'effet de gibbérellines 4/7 (GA4/7) et de l'annélation d'écorce sur la floraison femelle a été observé sur des descendants plein-frères de familles d'épicéa commun. Cet effet différé se manifeste indépendamment en réponse à GA4/7 et à l'annélation. L'année d'initiation florale, GA4/7 augmente significativement l'accroissement en hauteur des arbres, tandis que l'annélation le diminue significativement. Les influences respectives de GA4/7 et de l'annélation sur l'initiation florale et sur l'accroissement en hauteur sont discutées

Flowering and cone bearing of Picea abies grafts in second-generation seed orchards

In 2004, abundant flowering of Norway spruce (Picea abies (L.) Karst.) was observed in two second- generation seed orchards: (1) ‘Outbreeding’, promoting crossing between clones of five geographically distant populations; and (2) ‘Kolonowskie’, restoring a population whose offspring exists only in an international experiment (IUFRO 1964/1968). In bothseed orchards, female strobili were produced by 91.3% and 91.7% of clones, represented by 64.1% and 55.5% of grafts, respectively, and statistically significant differences between clones were found in the number of mature cones. In the case of the seed orchard ‘Outbreeding’, the number of mature cones in individual clones was significantly correlated with latitude of the origin of maternal populations (r = 0.8826, p = 0.0470). The majority (95%) of cones in seed orchards ‘Outbreeding’ and ‘Kolonowskie’ were produced by only 28.2% and 38.5% of all clones, and 21.4% and 25.7% of all grafts, respectively. These data attest to a disparity between the level of genetic diversity in seed orchard progeny resulting from the observed numbers of cone-bearing clones and grafts and the genetic diversity expected from the actual participation of clones and grafts in seed orchard composition. The estimated seed production per 1 ha of seed orchard area in 2004 reached 21.05 kg for ‘Outbreeding’ and 21.72 kg for ‘Kolonowskie’

Flowering and cone production variability and its effect on parental balance in a Scots pine clonal seed orchard

Clonal variation in flowering characteristics and cone production was investigated in a Scots pine (Pinus sylvestris L) clonal seed orchard consisting of 32 clones. At the time of observations, the orchard was 17-19 years old. It was found that on average, within a clone, female flowers were receptive about 1 day before the beginning of pollen shedding and there was a significant correlation between the ranks of clones according to their onset of flowering in 2 consecutive years. Male and female flowering periods were synchronized among the majority of clones and the index of phenological overlap was over 0.41. Significant variations among clones were found for male and female cone production as well as for some selected pollen-related characteristics. On average, individual clones in the orchard produced in total from 0.4 to 4.5 kg of pollen and from 900 to 6500 cones a year. It was found that 25% and 50% of clones produced 46% and 72% of pollen, respectively. Analogous numbers for cone production were 35% and 63%. Some patterns of sexual asymmetry among clones were detected; however, genetic correlations between pollen and cone productions were positive. Effective population sizes were generally high, but the estimate was lower for pollen (75.9%) than for cone production (95.9%). The expected outcrossing rate, based on effective population size calculated using both male and female contribution and background pollination, was high (0.977). The efficiency of the orchard and its potential use for reforestation purposes is discussed.Variabilité de la floraison et de la fructification et son effet sur l'équilibre entre parents dans un verger à graines de clones de pin sylvestre. Les variations clonales de caractéristiques de floraison et de fructification ont été étudiées dans un verger à graines de clones de pin sylvestre (Pinus silvestris L) comportant 32 clones. Le verger est situé dans le district forestier de Gniewkowo, en Pologne. Au moment des observations, ce verger était âgé de 17 à 19 ans. Les caractéristiques de floraison ont été observées sur quatre ramets de chacun des 32 clones pendant 2 (fructification et phénologie de la floraison) ou 3 (floraison mâle) années consécutives. On a montré qu'en moyenne à l'intérieur d'un même clone les cônes femelles sont réceptifs environ 1 jour avant le début de la libéralisation du pollen (fig 1). Il existe une corrélation significative dans le classement des clones pour leur mise à fleur entre les 2 années consécutives mais les dates de début de floraison sont décalées de 3 semaines entre ces 2 années. Les périodes de floraison mâle et femelle sont synchronisées pour la majorité des clones et l'index de recouvrement phénologique est de 0,41. Les indices de recouvrement phénologique sont corrélés pour les paires de clones s'intercroisant et les clones intervenant comme mâles, mais pas pour les clones intervenant comme femelles. Des variations significatives entre clones sont observées pour la production de cônes mâles et femelles (tableaux I et II), de même que pour certaines caractéristiques liées au pollen (tableau II, fig 2). Le nombre de pousses portant des cônes mâles, et le nombre de ces cônes varie selon les années et selon les secteurs de la couronne. Quelques interactions apparaissent statistiquement significatives. En moyenne, chaque clone du verger produit entre 0,4 et 4,5 kg de pollen par an à partir de 900 à 6 500 cônes (figs 3 et 4). On a trouvé que 25 et 50 % des clones ont produit respectivement 46 et 72 % du pollen. Les estimations correspondantes pour la floraison femelle sont respectivement de 35 et 63 % (figs 3 et 4). Des asymétries sexuelles ont été détectées chez certains clones (fig 5) mais les corrélations génétiques entre production de pollen et de cônes femelles sont positives (tableau IV). Une contribution clonale combinée à la descendance du verger a été estimée en prenant en compte à la fois les effets mâles et femelles (fig 6). Les effets phénologiques semblent expliquer la légère modification de classement des contributions clonales d'une année à l'autre. La taille effective de population estimée pour ce verger est généralement élevée, mais les estimations sont plus faibles pour la production de pollen (75,9%) que pour la production de cônes femelles (95,9%). Les taux d'allogamie attendus, en se basant sur la taille effective de population calculée en utilisant à la fois les contributions mâles et femelles, et la pollution pollinique sont élevés (0,977). La productivité de ce verger et les possibilités de l'utiliser pour les reboisements sont discutées

Effect of polluted environment on the female and male strobili bearing of European Scots pine provenances

Studies on female and male strobili production as well as on pollen production and viability were performed at a polluted (Luboń) and a control (Kórnik) sites. Female strobili bearing per tree and total length of male strobili produced per tree were significantly higher in Luboń than in Kórnik and the stand density and tree crown exposition to sunlight were likely responsible for that result. Percentage of pollen germination was not affected by any variables studied. Neither provenance nor provenance x site interactions were found

Flowering of Picea abies (L.) Karst. clones of Istebna origin in the Kórnik seed orchard

The flowering and graft mortality of Norway spruce clones of Istebna origin was only slightly different from clones of other origin in the same seed orchard. The negative effect ofmoving Istebna clones from the south to the north of their origin was probably compensated by moving them from a higher altitude to lowland. There is a danger that the complete loss of several clones, observed in the seed orchard with time,may really decrease the expected level of genetic variation in the progeny. It is recommended that the mortality of grafts and the reduction in the number of clones in the seed orchard should be under permanent observation