Silvicultural and forest-protection measures in pine stands affected by annosum root rot

The paper presents an evaluation of the effectiveness of silvicultural and forest protection activities in pine plantations affected by Heterobasidion annosum (Fr.) Bref. Revealed that forest practices in Belarus uses a very small set of measures to limit the damage of the disease. It was revealed that all types of cuttings have clearly low efficiency in the improvement of sanitary state of the pine stands due to lack of their effect on the pathogen

Ranking of silvicultural areas by the threat of annosum root rot in pine stands

The paper presents a ranking of forest sites according to the threat ofinfection of planting Pinus sylvestrisstands by Heterobasidion annosum.8 degrees of treat of infection are marked out according to the site characteristics and types of habitat and moisture conditions. Presented gradation underlined planning of forest stands with susceptible species, that would allow to make for creation of more stable stands, reduction of infection and decrease costs of protection measures

ВНУТРІШНЬОПЕЧІНКОВИЙ ХОЛЕСТАЗ ВАГІТНИХ ПІСЛЯ ЗАСТОСУВАННЯ ДОПОМІЖНИХ РЕПРОДУКТИВНИХ ТЕХНОЛОГІЙ: КЛІНІЧНІ ОСОБЛИВОСТІ

80 pregnant women were examined after assisted reproductive technology (ART) programs: 40 women with manifestations of intrahepatic cholestasis of pregnant women (IHP) - the main group and 40 women without manifestations of IHP (comparison group).In the majority (62.5%) of patients after ART, the diagnosis of IHP established after 30 weeks of pregnancy. Some patients (27.5%) reported short-term episodes of IHP up to 24 weeks of gestation. In 17.5% of women, IHP had a severe course. Almost a third (27.5%) of women are over 35 years old. Women with IHP have a significantly higher frequency of allergies in the anamnesis (35.0%), liver pathology (20.0%) and diseases of the gastrointestinal tract (25.0%). In one third of women, IHP developed repeatedly, 42.5% of the main patients indicated a family history burdened with IHP. Almost a third of women (27.5% vs. 12.5%, p<0.05) had a history of polycystic ovary syndrome.The current pregnancy characterized by a high frequency of complications. A quarter of patients (25.0%) had early preeclampsia. In the second half of pregnancy, the threat of preterm birth noted in most women during the manifestation of IHP (60.0%). The incidence of fetal distress in women with IHP was almost 2 times higher than in patients without this complication (47.5% vs. 25.0%, respectively, p <0.05). The frequency of preeclampsia is also higher (40.0%).The vast majority of women in the main group were born by cesarean section (70.0%). Almost half of patients with IHP were premature (45.0%). A third of women (35.0%) had fetal distress in childbirth. In 27.5%, childbirth complicated by bleeding of more than 5% of body weight. The postpartum period was characterized by a 4-fold increase in the frequency of late bleeding (20.0% vs. 5.0%, p <0.05).One case of antenatal mortality noted in pregnant women after ART with IHP. Almost half of the children were born with asphyxia of varying severity (48.7%), with 10.3% diagnosed with severe asphyxia. One third of children were born with a body weight below 2500 g (30.8%). In 74.4% of newborns from mothers of the main group, various disorders of the period of early neonatal adaptation were noted, among which the most prominent were: RDS (35.9%), jaundice (43.6%) and gastrointestinal syndrome (30.8%). The 2-fold increased incidence of hemorrhagic syndrome (17.9%) is noteworthy.80 pregnant women were examined after assisted reproductive technology (ART) programs: 40 women with manifestations of intrahepatic cholestasis of pregnant women (IHP) - the main group and 40 women without manifestations of IHP (comparison group).In the majority (62.5%) of patients after ART, the diagnosis of IHP established after 30 weeks of pregnancy. Some patients (27.5%) reported short-term episodes of IHP up to 24 weeks of gestation. In 17.5% of women, IHP had a severe course. Almost a third (27.5%) of women are over 35 years old. Women with IHP have a significantly higher frequency of allergies in the anamnesis (35.0%), liver pathology (20.0%) and diseases of the gastrointestinal tract (25.0%). In one third of women, IHP developed repeatedly, 42.5% of the main patients indicated a family history burdened with IHP. Almost a third of women (27.5% vs. 12.5%, p<0.05) had a history of polycystic ovary syndrome.The current pregnancy characterized by a high frequency of complications. A quarter of patients (25.0%) had early preeclampsia. In the second half of pregnancy, the threat of preterm birth noted in most women during the manifestation of IHP (60.0%). The incidence of fetal distress in women with IHP was almost 2 times higher than in patients without this complication (47.5% vs. 25.0%, respectively, p <0.05). The frequency of preeclampsia is also higher (40.0%).The vast majority of women in the main group were born by cesarean section (70.0%). Almost half of patients with IHP were premature (45.0%). A third of women (35.0%) had fetal distress in childbirth. In 27.5%, childbirth complicated by bleeding of more than 5% of body weight. The postpartum period was characterized by a 4-fold increase in the frequency of late bleeding (20.0% vs. 5.0%, p <0.05).One case of antenatal mortality noted in pregnant women after ART with IHP. Almost half of the children were born with asphyxia of varying severity (48.7%), with 10.3% diagnosed with severe asphyxia. One third of children were born with a body weight below 2500 g (30.8%). In 74.4% of newborns from mothers of the main group, various disorders of the period of early neonatal adaptation were noted, among which the most prominent were: RDS (35.9%), jaundice (43.6%) and gastrointestinal syndrome (30.8%). The 2-fold increased incidence of hemorrhagic syndrome (17.9%) is noteworthy

Strong-field effects in Rabi oscillations between a single state and a superposition of states

Rabi oscillations of quantum population are known to occur in two-level systems driven by spectrally narrow laser fields. In this work we study Rabi oscillations induced by shaped broadband femtosecond laser pulses. Due to the broad spectral width of the driving field, the oscillations are initiated between a ground state and a coherent superposition of excited states, or a "wavepacket", rather than a single excited state. Our experiments reveal an intricate dependence of the wavepacket phase on the intensity of laser field. We confirm numerically that the effect is associated with the strong-field nature of the interaction, and provide a qualitative picture by invoking a simple theoretical model.Comment: 6 pages, 6 figure

Emergence of pseudogap from short-range spin-correlations in electron doped cuprates

Electron interactions are pivotal for defining the electronic structure of quantum materials. In particular, the strong electron Coulomb repulsion is considered the keystone for describing the emergence of exotic and/or ordered phases of quantum matter as disparate as high-temperature superconductivity and charge- or magnetic-order. However, a comprehensive understanding of fundamental electronic properties of quantum materials is often complicated by the appearance of an enigmatic partial suppression of low-energy electronic states, known as the pseudogap. Here we take advantage of ultrafast angle-resolved photoemission spectroscopy to unveil the temperature evolution of the low-energy density of states in the electron-doped cuprate Nd$_{\text{2-x}}$Ce$_{\text{x}}$CuO$_{\text{4}}$, an emblematic system where the pseudogap intertwines with magnetic degrees of freedom. By photoexciting the electronic system across the pseudogap onset temperature T*, we report the direct relation between the momentum-resolved pseudogap spectral features and the spin-correlation length with an unprecedented sensitivity. This transient approach, corroborated by mean field model calculations, allows us to establish the pseudogap in electron-doped cuprates as a precursor to the incipient antiferromagnetic order even when long-range antiferromagnetic correlations are not established, as in the case of optimal doping.Comment: 17 pages, 3 figure

Collapse of superconductivity in cuprates via ultrafast quenching of phase coherence

The possibility of driving phase transitions in low-density condensates through the loss of phase coherence alone has far-reaching implications for the study of quantum phases of matter. This has inspired the development of tools to control and explore the collective properties of condensate phases via phase fluctuations. Electrically-gated oxide interfaces, ultracold Fermi atoms, and cuprate superconductors, which are characterized by an intrinsically small phase-stiffness, are paradigmatic examples where these tools are having a dramatic impact. Here we use light pulses shorter than the internal thermalization time to drive and probe the phase fragility of the Bi$_2$Sr$_2$CaCu$_2$O$_{8+\delta}$ cuprate superconductor, completely melting the superconducting condensate without affecting the pairing strength. The resulting ultrafast dynamics of phase fluctuations and charge excitations are captured and disentangled by time-resolved photoemission spectroscopy. This work demonstrates the dominant role of phase coherence in the superconductor-to-normal state phase transition and offers a benchmark for non-equilibrium spectroscopic investigations of the cuprate phase diagram.Comment: 24 pages, 9 figures, Main Text and Supplementary Informatio

Quantum resonances in selective rotational excitation of molecules with a sequence of ultrashort laser pulses

We investigate experimentally the effect of quantum resonance in the rotational excitation of the simplest quantum rotor - a diatomic molecule. By using the techniques of high-resolution femtosecond pulse shaping and rotational state-resolved detection, we measure directly the amount of energy absorbed by molecules interacting with a periodic train of laser pulses, and study its dependence on the train period. We show that the energy transfer is significantly enhanced at quantum resonance, and use this effect for demonstrating selective rotational excitation of two nitrogen isotopologues, $^{14}N_2$ and $^{15}N_2$. Moreover, by tuning the period of the pulse train in the vicinity of a fractional quantum resonance, we achieve spin-selective rotational excitation of para- and ortho-isomers of $^{15}N_2$.Comment: 5 pages, 4 figure