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1.
Georgian Med News ; (346): 38-44, 2024 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-38501619

RESUMEN

The purpose of this article is to investigate the manifestation of creativity levels and criteria, conditioned by the ratio of personal qualities, motivational orientation, and contributing and hindering factors. These elements are regarded as pivotal factors in ensuring mental health and socio-psychological maturity. The study involved 300 managers from the private and public sectors of the Republic of Armenia. The research contributes to the academic discourse by introducing novel correlations between scientific concepts of creativity, enriching the theoretical foundations of creativity and motivation, creativity and personal qualities, and creativity and its contributing and hindering factors. Findings suggest a high level of creativity among managers, characterized by fluency, flexibility, and originality. Notably, power and altruism emerge as significant motivational orientations within the manager's psychological profile. Moreover, modern managers do not perceive reward or competition as hindrances to creativity. Essential factors conducive to creativity include dominance, competition, reward, freedom of thought, and a willingness to take risks in decision-making. The proposed creativity research and development model holds promise for informing a scientific approach to the psychological selection and training of managers.


Asunto(s)
Creatividad , Salud Mental , Motivación , Armenia
2.
Vestn Oftalmol ; 139(5): 36-42, 2023.
Artículo en Ruso | MEDLINE | ID: mdl-37942595

RESUMEN

PURPOSE: The study comparatively evaluates the effectiveness of various approaches to acaricidal treatment in patients with chronic demodex blepharitis and meibomian gland dysfunctions. MATERIAL AND METHODS: The study included 40 patients with chronic blepharitis (CB) of demodicosis etiology in conditions of meibomian gland dysfunction (MGD) and dry eye (DE). The 1st group of patients (20 people) received acaricidal treatment as part of therapeutic eyelid hygiene (TEH; 2 times a day) involving the use of «Blefarogel ochishchenie¼, «Blefarolosion¼, «Blefarogel forte¼ (contains sulfur and metronidazole). Acaricidal treatment in the patients of the 2nd group involved applications of a product containing metronidazole (2 times a day) without TEH. Control points: 1) at inclusion in the study; 2) after a course of therapy (45 days). Evaluation included: patient acarograms, symptoms and signs of CB (points); OSDI; tear film break-up time (TBUT, sec), severity of meibomian gland dysfunction (S-MGD, points). Statistical analysis: calculation of M±SD, Mann-Whitney, and Wilcoxon tests. RESULTS: Acaricidal treatment was effective in both groups (reduction in demodex population, which was more pronounced in the 1st group). Symptoms and signs of CB were significantly less pronounced in the patients of the 1st group after therapy. The patients of the 1st group showed a significant decrease in S-MGD, OSDI and an increase in TBUT, the 2nd group - a significant decrease in OSDI and an increase in TBUT at the second control point. The positive OSDI and TBUT trends were significantly more pronounced in the 1st group. CONCLUSION: Acaricidal treatment as part of TEH showed a significantly more pronounced reduction in demodex population, relief of CB symptoms and sign, OSDI decrease and TBUT increase, compared to the 2nd group. Apparently, this was associated with combined acaricidal effect and significant S-MGD decrease in the patients of the 1st group.


Asunto(s)
Acaricidas , Blefaritis , Síndromes de Ojo Seco , Enfermedades de los Párpados , Disfunción de la Glándula de Meibomio , Humanos , Disfunción de la Glándula de Meibomio/diagnóstico , Disfunción de la Glándula de Meibomio/terapia , Disfunción de la Glándula de Meibomio/complicaciones , Acaricidas/uso terapéutico , Metronidazol/uso terapéutico , Glándulas Tarsales/diagnóstico por imagen , Estudios Prospectivos , Lágrimas , Blefaritis/diagnóstico , Blefaritis/terapia , Síndromes de Ojo Seco/etiología
3.
Vestn Oftalmol ; 139(1): 46-54, 2023.
Artículo en Ruso | MEDLINE | ID: mdl-36924514

RESUMEN

PURPOSE: The study evaluates the effectiveness of eyelid hygiene (EH) in correction of the ocular surface (OS) condition in patients with dry eye disease (DED) ahead of cataract phacoemulsification (CPE). MATERIAL AND METHODS: The study included 90 patients with cataract: the first group consisted of 45 DED patients with lipid deficiency, the second group - 45 DED patients with lipid/mucous deficiency. Prior to CPE, all patients were randomized into three subgroups of 15 people each. In subgroups 1.1 and 2.1 patients did not receive any treatment for correction of the state of ocular surface. Patients in subgroups 1.2 and 1.3 were instilled 0.18% sodium hyaluronate (SH); in subgroups 2.2 and 2.3 - fixed combination of 0.15% SH and 3% trehalose. In subgroups 1.3 and 2.3 EH was performed (with «Blefarogel cleansing¼, «Blefarolotion¼, «Blefarogel-1¼ two times a day for one month before CPE). The control points were: 1) at study inclusion; 2) after correction of the ocular surface condition; 3) 30 days after CPE. The following parameters were evaluated: OSDI, TBUT (Norn's test), severity of meibomian gland dysfunction (MGD), patient satisfaction with CPE (CPE-PS). Statistical analysis: M±SD calculation, Mann--Whitney, Kruskal-Wallis and Wilcoxon tests. RESULTS: At the second control point, a statistically significant more pronounced OSDI decrease and bigger increase in TBUT were observed in subgroups 1.3 and 2.3 compared to subgroups 1.2 and 2.2 (Mann-Whitney U-test). Apparently, this was associated with a reduction in MGD severity in patients who received EH. At the third control point, significant lower values of OSDI and MGD severity, higher TBUT values and greater CFE-PS were recorded in subgroups 1.3 and 2.3 (Kruskal-Wallis test, Wilcoxon two-sample test). CONCLUSION: Carrying out EH using the «Blefarogel cleansing¼, «Blefarolotion¼, «Blefarogel-1¼ and artificial tear in patients with DED and cataract can increase the efficiency of correction of ocular surface condition and improve patient satisfaction with the outcome of CPE.


Asunto(s)
Catarata , Síndromes de Ojo Seco , Facoemulsificación , Humanos , Facoemulsificación/efectos adversos , Glándulas Tarsales/diagnóstico por imagen , Catarata/etiología , Higiene , Síndromes de Ojo Seco/diagnóstico , Síndromes de Ojo Seco/etiología , Síndromes de Ojo Seco/terapia , Lágrimas , Ácido Hialurónico , Lípidos
4.
Phys Rev Lett ; 107(19): 196802, 2011 Nov 04.
Artículo en Inglés | MEDLINE | ID: mdl-22181631

RESUMEN

We study electron transmission through a periodic array of quantum dots (QD) sandwiched between doped semiconductor leads. When the Fermi wavelength of tunneling electron exceeds the array lattice constant, the off-resonant per QD conductance is enhanced by several orders of magnitude relative to the single-QD conductance. The physical mechanism of the enhancement is delocalization of a small fraction of system eigenstates caused by coherent coupling of QDs via the electron continuum in the leads.


Asunto(s)
Electrones , Puntos Cuánticos , Algoritmos , Semiconductores
5.
N Engl J Med ; 321(4): 205-12, 1989 Jul 27.
Artículo en Inglés | MEDLINE | ID: mdl-2664512

RESUMEN

On April 26, 1986, an accident at the Chernobyl nuclear power station in the Soviet Union exposed about 200 people to large doses of total-body radiation. Thirteen persons exposed to estimated total-body doses of 5.6 to 13.4 Gy received bone marrow transplants. Two transplant recipients, who received estimated doses of radiation of 5.6 and 8.7 Gy, are alive more than three years after the accident. The others died of various causes, including burns (the cause of death in five), interstitial pneumonitis (three), graft-versus-host disease (two), and acute renal failure and adult respiratory distress syndrome (one). There was hematopoietic (granulocytic) recovery in nine transplant recipients who could be evaluated, six of whom had transient partial engraftment before the recovery of their own marrow. Graft-versus-host disease was diagnosed clinically in four persons and suspected in two others. Although the recovery of endogenous hematopoiesis may occur after exposure to radiation doses of 5.6 to 13.4 Gy, we do not know whether it is more likely after the transient engraftment of transplanted stem cells. Because large doses of radiation affect multiple systems, bone marrow recovery does not necessarily ensure survival. Furthermore, the risk of graft-versus-host disease must be considered when the benefits of this treatment are being weighed.


Asunto(s)
Accidentes , Trasplante de Médula Ósea , Reactores Nucleares , Traumatismos por Radiación/cirugía , Adolescente , Adulto , Quemaduras/complicaciones , Femenino , Enfermedad Injerto contra Huésped/etiología , Hematopoyesis/efectos de la radiación , Humanos , Masculino , Persona de Mediana Edad , Centrales Eléctricas , Dosis de Radiación , Donantes de Tejidos , Ucrania
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