Robust, Narrow-Band Nanorods LEDs with Luminous Efficacy > 200 lm/W: Next-Generation of Efficient Solid-State Lighting.

Energy-efficient white light-emitting diodes (LEDs) are in high demand across the society. Despite the significant advancements in the modern lighting industry based on solid-state electronics and inorganic phosphor, solid-state lighting (SSL) continues to pursue improved efficiency, saturated color performance, and longer lifetime. Here in this article, robust, narrow emission band nanorods (NRs) are disclosed with tailored wavelengths, aiming to enhance the color rendering index (CRI) and luminous efficacy (LE).

Prophylaxis of decidual CD68/CD163 macrophage disbalance in extracorporeal fertilized women.

Unlabelled: The demographic crisis that prevailed in Ukraine in recent years, the state of war as a result of the aggression of the Russian Federation, reproductive losses among women of childbearing age are one of the most urgent problems in modern obstetrics and gynecology. One of the most effective methods of correcting impaired reproductive function is in vitro fertilization.

The Purpose Of This Work: is to develop a pharmacological complex for the prevention of imbalance of CD68/CD163 decidual macrophages in vitro fertilized women.

Ultralow Roll-Off Quantum Dot Light-Emitting Diodes Using Engineered Carrier Injection Layer.

Quantum dot (QD) light-emitting diodes (QLEDs) have attracted extensive attention due to their high color purity, solution-processability, and high brightness. Due to extensive efforts, the external quantum efficiency (EQE) of QLEDs has approached the theoretical limit. However, because of the efficiency roll-off, the high EQE can only be achieved at relatively low luminance, hindering their application in high-brightness devices such as near-to-eye displays and lighting applications.

Solution-Processed Red, Green, and Blue Quantum Rod Light-Emitting Diodes.

Solution-processed semiconductor nanocrystals are evolving as potential candidates for future display and lighting applications owing to their size-tunable emission, ultrasaturated colors, and compatibility with large-area flexible substrates. Among them, quantum rods (QRs) are emerging materials for optoelectronic applications, offering polarized emission, high light outcoupling efficiency, color purity, and better stability in solid films. However, synthesizing QRs covering the full visible wavelength region has been a big challenge, particularly in the blue range.

IMPACT OF PREVENTIVE THERAPY ON REGULATING MECHANISMS OF DECIDUAL MACROPHAGE POLARIZATION IN PREGNANT WOMEN WITH HIGH RISK OF PREECLAMPLSIA.

Objective: The aim: This study was aimed at analyzing the impact of preventive therapy for pregnant women at a high risk to develop preeclampsia on the normalization of the mechanisms of decidual macrophage polarization.

Patients And Methods: Materials and methods: The methodology was designed to obtain data on the content of pro- and anti-inflammatory cytokines and indicators of nitric oxide and arginase metabolism in cervical mucus. The ration between M1 / M2 decidual macrophages in the placenta was determined by applying immunohistochemical methods.

Quantum-Rod On-Chip LEDs for Display Backlights with Efficacy of 149 lm W : A Step toward 200 lm W.

Efficient white light-emitting diodes (LEDs) with an efficacy of 200 lm W are much desirable for lighting and displays. The phosphor-based LEDs in use today for display applications offer poor color saturation. Intensive efforts have been made to replace the phosphor with quantum-dot-based downconverters, but the efficiency and stability of these devices are still in their infancy.

Stable bright perovskite nanoparticle thin porous films for color enhancement in modern liquid crystal displays.

Cesium-lead halide perovskite nanoparticles are a promising class of luminescent materials for color and efficient displays. However, material stability is the key issue to solve before we can use these materials in modern displays. Encapsulation is one of the most efficient methods that can markedly improve the stability of perovskite nanoparticles against moisture, heat, oxygen, and light.

Thermally Stable Quantum Rods, Covering Full Visible Range for Display and Lighting Application.

Recently, quantum rods (QRs) have been studied heavily for display and lighting applications. QRs offer serious advantages over the quantum dots such as higher light out-coupling coefficient, and polarized emission. The QR enhancement films double liquid crystal display efficiency.

Crystal structures of the flavonoid Oroxylin A and the regioisomers Negletein and Wogonin.

The flavonoid Oroxylin A (6-methoxychrysin or 5,7-dihydroxy-6-methoxy-2-phenyl-4H-chromen-4-one, CHO) and its regioisomers are of increasing interest for a variety of bioactive functions and their pharmaceutical formulation is of importance. Previous difficulties in the separation and misidentification of Oroxylin A from its regioisomers Wogonin (8-methoxychrysin or 5,7-dihydroxy-8-methoxy-2-phenyl-4H-chromen-4-one) and Negletein (5,6-dihydroxy-7-methoxyflavone or 5,6-dihydroxy-7-methoxy-2-phenyl-4H-chromen-4-one) render its full structural and powder X-ray characterization highly desirable. The low-temperature (100 K) crystal structures of Oroxylin A, Negletein and Wogonin sesquihydrate are reported for the first time.

Inkjet-printed aligned quantum rod enhancement films for their application in liquid crystal displays.

Semiconductor quantum rods (QRs) show a polarized emission, which opens up the possibility of the enhancement of both brightness and color for liquid crystal displays (LCD) in the form of quantum rod enhancement films (QREFs) for LCD backlights. However, the QR alignment over a large area, suitable for displays, is a challenge. Inkjet printing of QREFs, introduced here, allows fabrication of well-aligned, uniform QREFs on photoaligned substrates using optimized QR inks.

Tandem crystallization strategies for resolution of 3,3,3-trifluorolactic acid [CF CH(OH)COOH] by chiral benzylamines.

Resolution of rac-3,3,3-trifluorolactic acid by diastereomeric salt formation was reinvestigated. The use of (S)-1-phenylethylamine gives coprecipitation of two diastereomeric phases, 1 (S)-[NH CH(CH )Ph](S)-[CF CH(OH)COO] and 2 (S)-[NH CH(CH )Ph](R)-[CF CH(OH)COO]·H O. Pure phase 1 may be obtained using molecular sieves as desiccants.

Changes of psycho-emotional state in the infertile pregnant females due to the anamnesis and IVF.

Objective: Introduction: During pregnancy in the body of a healthy woman there are physiological and psychological changes that contribute to the bearing a child and prepare the female for future labour and motherhood. In women who experience failure at the stage of fertilization or during pregnancy, as a result of prolonged negative emotional states, psycho-emotional stress develops. The aim of the research was to study the psycho-emotional state of women with infertility in history, whose pregnancy resulted from extracorporal fertilization (IVF), and to develop methods for reducing their anxiety.

Role of uterine blood flow disturbances in the development of late gestosis.

Objective: Introduction: Chronic endometritis (CE) associated lesions lessen the implantation potential of endometrium and aggravate the course of invasive processes in the uterine vessels The aim: Study of changes in doplerometric parameters of blood flow in spiral and uterine arteries in 17-18 weeks of pregnancy in women with СE in anamnesis.

Patients And Methods: Materials and methods: Сalculation of systolic/diastolic ratio (SDR), pulse index (PI) and resistive index (RI) has been carried out in 70 pregnant had CE in past history and 10 healthy pregnant women who experienced neither chronic endometritis before pregnancy nor preeclampsia.

Results: Results: SDR in SA patients with CE in history and follow-up development of preeclampsia is by 19& higher the control values (р<0,05); PI was 85& higher than the similar one in the control group and RI was 86& higher (р<0,01).

Exotic Property of Azobenzenesulfonic Photoalignment Material Based on Relative Humidity.

Azobenzene photoalignment materials are highly effective for liquid crystal alignment with high sensitivity and rewritability. A strong relationship between relative humidity and the alignment quality of a thin layer of azobenzenesulfonic dye has been investigated, where the photoinduced phase retardation, order parameter, and anchoring strength of the alignment layer are influenced dramatically by relative humidity. Our results provide fabrication guidance for the photoalignment process in both display and photonic applications.

Magnetic actuation of a thermodynamically stable colloid of ferromagnetic nanoparticles in a liquid crystal.

We report the development of a highly stable nanomaterial based on ferromagnetic nanoparticles dispersed in a thermotropic liquid crystal. The long-term colloidal stability and homogeneity were achieved through surface modification of the nanoparticles with a mixture of a dendritic oligomesogenic surfactant and hexylphosphonic acid and confirmed by optical and electron microscopy. The nanomaterial has an increased sensitivity to the magnetic field possessing collective and non-collective magneto-optical responses in contrast to the undoped LC.

Enhanced orientational Kerr effect in vertically aligned deformed helix ferroelectric liquid crystals.

We disclose the vertically aligned deformed helix ferroelectric liquid crystal whose Kerr constant (Kkerr≈130  nm/V2 at λ=543  nm) is around one order of magnitude higher than any other value previously reported for liquid crystalline structures. Under certain conditions, the phase modulation with ellipticity less than 0.05 over the range of continuous and hysteresis-free electric adjustment of the phase shift from zero to 2π has been obtained at subkilohertz frequency.

Thermodynamically stable dispersions of quantum dots in a nematic liquid crystal.

Using transmittance electron microscopy, fluorescence and polarizing optical microscopy, optical spectroscopy, and fluorescent correlation spectroscopy, it was shown that CdSe/ZnS quantum dots coated with a specifically designed surfactant were readily dispersed in nematic liquid crystal (LC) to form stable colloids. The mixture of an alkyl phosphonate and a dendritic surfactant, where the constituent molecules contain promesogenic units, enabled the formation of thermodynamically stable colloids that were stable for at least 1 year. Stable colloids are formed due to minimization of the distortion of the LC ordering around the quantum dots.

Piezoelectric and flexoelectric effects in ferroelectric liquid crystals.

Flexoelectric and piezoelectric effects in ferroelectric liquid crystals (FLCs) have been studied. It is shown that nonlinear electromechanical coupling is determined by a local flexoelectric effect. Dependence of the parameters of nonlinearity of the flexoelectric effect on the parameter of phase transition from a paraelectric phase to a polar phase has been studied.

[The influence of ezetimibe and simvaststin on platelet aggregation and protein c system in patients with coronary heart disease and hypercholesterolemia].

Therapy with ezetimib (10 mg daily for 2 weeks) caused a 24% reduction of plasma LDL cholesterol level (p < 0.05) and maximum ADP and collagen-induced platelet aggregation from 76.2 +/- 1.

[M-29 human diploid cells line--a substrate for the production of antiviral vaccines].

Aim: Study of morphologic and karyologic characteristics of 5 russian human diploid cell lines (HDC).

Materials And Methods: 5 HDC lines and HDC strain MRC-5 were studied; RK-13 and Vero continuous cell lines were used; viruses: rubella (RA27/3), measles (L-16), epidemic parotitis (L-3). Cytogenetic analysis of HDC was performed by using DAPI differential staining method.

[Monitoring of analgesia and amnesia during the general anesthesia in surgeries made on the lungs].

Somatosensorially evoked and auditorially evoked potentials (SSEP and AEP) were evaluated in 75 patients in different stages of general anesthesia during surgical procedures made on the lungs. N19-P23 latent increases of SSEP denoted an adequate level of analgesia. The AEP evaluation is recommended for monitoring the amnesia status during general anesthesia.

[Various cellular mechanisms of the action of laser irradiation of blood].

Effect of in vitro exposure to therapeutic He-Ne laser at a wave-length of 630 nm in two modes, 2 and 6 mWt, on the function of blood cells is studied. Exposure to 6 mWt resulted in spontaneous increase of interleukin-1 production by peripheral blood mononuclears. 2 mWt exposure led to increase of erythrocyte deformability and decrease of their viscosity, whereas 6 mWt exposure did not modify these parameters.

[Optical properties of Compoplast 300 polymer containers].

The paper presents the results of investigations into the spectral wall transmission ratio of Compoplast 300 containers, which have been made on a SF-46 spectrophotometer in a wavelength of 190 to 1100 nm. It is concluded that it should be borne in mind the fact that a part of radiation is absorbed by the container walls while developing the photomodification conditions of hemocomponents. The authors emphasize that the manufacture of hemocontainers made from the polymer materials which have a high ultraviolet radiation transmission ratio is very promising.