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Piezomodulation of Connection Conductance TlInTe₂

Open Journal of Inorganic Non 2016年第4期6卷 25-32页

作者： Eldar M. Gojaev sevda kh. agaeva Samire O. Kulieva Mahir T. Dadashov Azerbaijan Technical University Baku Azerbaijan National Aviation Academy of Azerbaijan Mardakan Azerbaijan

This paper discusses the development method of strain sensors based on acicular single crystal compound TlInTe2 is grown by Bridgman-Stockbarger technique. Creating mechanically reliable ohmic contacts on said obtained single crystals was carried out directly by spot welding wires corresponding to the ends of the capacitor discharge heated in a stream of inert gas from the single crystal TlInTe2. This method of creating contacts proved effective and reliable. Sensors made by this manner stuck to the calibrated beams of steel thickness of 1 mm, a length of 30 mm and a corresponding optimal regime got sensors with a maximum piezo-sensitivity. It was found that if enshrined at one end of a thin steel sheet with glued crystals TlInTe2 initiate periodic mechanical vibrations to the same frequency, occurs conductivity modulation. The effect of piezo-modulation conductance depending on the degree of deformation, illumination in interval of deformation and lux illumination in room temperature were studied. The study showed that the more mechanical deformation and illumination are, the more modulation amplitude is. We studied the modulation of the conductivity of crystals during mechanical deformation values of 8, 14, 19, 23 and 27 × 10-5and illuminance 1000, 2750, 4750 and 6500 suites. Investigations the level piezo-signal depending on the amplitude of mechanical vibrations at frequency of 85 Hz, it is found that with increasing magnitude of the mechanical deformation of 7 × 10-5 and 26 × 10-5 amplitude increases six times. It is shown that the piezoresistive effect is clearly manifested in dynamic mode. Additional conductivity occurs during mechanical deformation. When the illuminated samples piezoconductivity magnitude increases linearly.

关键词： Electrical Conductivity Compound TlInTe2 Piezosensitivity Illumination Mechanical Deformation Piezomodulation

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The Impact of Energy Produced by Civilization on Global Warming

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Open Journal of Ecology 2022年第6期12卷 325-332页

作者： Vladimir kh. Dobruskin Independent Researcher Beer Yacov Israel

The thermodynamic approach to the evolution of human society shows that the energy generated by civilization disrupts the thermal balance of the Earth. This energy did not exist before the advent of civilization;it practically does not affect the thermal radiation of the planet and dissipates in the atmosphere in the form of heat, increasing the kinetic energy of gas molecules and, consequently, their temperature. Since air molecules cannot leave the Earth due to gravity, excess heat accumulates on the planet and contributes to global warming. A quantitative assessment of the effect is given. An analogy can be made: the energy generated by humanity heats the atmosphere, as a furnace heats a dwelling.

关键词： Thermodynamics Global Warming Energy of Civilization Climate

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Contribution of Energy Produced by Humanity to Global Warming

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Open Journal of Ecology 2023年第5期13卷 241-247页

作者： Vladimir kh. Dobruskin Pashosh Beer Yacov Israel

Civilization has reached such a level of development when the energy produced by humanity (the energy of civilization) begins to become a noticeable addition to the energy of incoming solar radiation. The energy of civilization accumulates in the surface layer, where human activity is concentrated, and dissipates in the form of heat, causing a rise in temperature. An equation is derived to calculate the contribution of civilization’s energy to global warming, which prove to be directly proportional to the accumulated energy of civilization and inversely proportional to the energy of solar radiation on the earth’s surface to the power of three-fourths. The coefficient of proportionality is expressed in terms of fundamental physical constants: Planck’s constant, the speed of light and the Boltzmann constant. It is shown that the contribution of energy of civilization is comparable with the role of increasing concentration of carbon dioxide over the past decades. To mitigate the negative effect, it is necessary to reduce the energy production and partially revise the environmental policy.

关键词： Stephan-Boltzmann Law Energy Of Civilization Global Warming

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Comparison via Digital Radiography of Radiopacity Levels of Composite Materials with Various Shades and Viscosities

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Journal of Wuhan University of Technology(Materials Science) 2022年第2期37卷 170-176页

作者： Gunce Ozan Oktay Yazicioglu Hidir Tatar sevda Ozel Yildiz Istanbul University Faculty of Dentistry Dept.of Restorative Dentistry Haseki Education and Research Hospital Istanbul University Faculty of Medicine Dept.of Biostatistics

Aim of the present in vitro study is to evaluate the radiopacity levels of composite resins with various shades and viscosity.10 mm×2 mm discs were prepared from 7 condensable and 4 flowable composites(n=10).An aluminum step wedge ranging from 2.0 to 10.0 mm in thickness was placed on the occlusal *** radiographs were taken using a dental X-ray device and radiographic densities of each step of the aluminum wedge and the samples were recorded to the *** readings were taken and means were ***-Way Anova and Tamhane post hoc tests were *** G-eanial Posterior has the highest radiopacity value followed by Filtek Z550,Aelite Flo has the lowest radiopacity *** composites show higher radiopacity and flowable composites with higher filler loadings have superior radiopacity levels to condensable *** and body shades of the composite brands have also statistically significant differences in radiopacity ***,radiopacity level of a composite resin material is not affected by the size of fillers;however,the composition,shape and loading of the fillers can specify the radiodensity.

关键词： radiopacity composite resins digital radiography flowable composites shade

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Levels of vocational satisfaction,burnout and compassion fatigue of health professionals working in pediatric clinics

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World Journal of Clinical Pediatrics 2022年第1期11卷 38-47页

作者： Oğuz Koyuncu sevda Arslan Department of Nursing Sakarya Training and Research HospitalSakarya 0080DüzceTurkey Department of Nursing Düzce University Faculty of Health SciencesMerkez 81100DüzceTurkey

BACKGROUND Burnout and compassion fatigue are affecting the quality of professional *** To investigate the levels of vocational satisfaction,burnout,and compassion fatigue and factors that may be related to health professionals working in children’s *** The study sample was in the west of *** were collected using the questionnaire form and the quality of life scale for *** The findings obtained in this study showed that the level of vocational satisfaction of female health professionals and the burnout level of male health professionals were *** professional satisfaction of the doctors was lower than that of the nurses and midwives,and the mean score of burnout and fatigue was *** Further studies are needed on this topic to help improve the factors that may affect the professional quality of life of health professionals.

关键词： Health professionals Professional life quality Professional satisfaction Burnout Compassion fatigue

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Synthesis of thiopyrano[4″,3″:4′,5′]pyrido[3′,2′:4,5]furo[3,2-d]pyrimidines

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Chinese Chemical Letters 2010年第6期21卷 669-673页

作者： Essam kh. Ahmed Mohamed A. Ameen Chemistry Department Faculty of ScienceEl Minia UniversityEl Minia 61519Egypt

Reactions of the 6-hydroxy-thiopyrano[3,4-c]pyridine-5-carbonitrile derivative 1 withα-halo-carbonyl compounds gave the ortho-substituted intermediates 2a-c which were converted into furo[2,3-b]thiopyrano[4,3-d]pyridines 3a-c by fusion of a furan moiety under basic *** cyclization of 3a-c led to a fusion of a pyrimidine ring,yielding the tetracyclic products 6,7 and *** addition,condensation of 6 with various aromatic aldehydes afforded the corresponding imines 9a,*** reaction of 7 gave products 10a,b.

关键词： S N-Heterocycles S N O-Heterocyles Furo[2 3-b]thiopyrano[4 3-d]pyridine Thiopyranopyridofuropyrimidines

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Calculating the thermal properties of 93,94,95Mo using the BCS model with an average value gap parameter

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Nuclear Science and Techniques 2017年第9期28卷 81-86页

作者： V. Dehghani Gh. Forozani kh. Benam Physics Department Faculty of Sciences University of Sistan and Baluchestan Zahedan Iran Physics Department Bu-Ali Sina University Hamedan Iran

The gap parameter of the standard BCS model is replaced by the order parameter of the modified Ginzburg–Landau theory. Using this new form of the BCS model, the energy, entropy, and heat capacity of ^(93,94,95)Mo nuclei are calculated. The results are compared with the experimental data and standard BCS results. Since the order parameter does not drop to zero at a critical temperature, our results for thermal properties are free of singularities. We have shown that the heat capacity as a function of temperature behaves smoothly and it is highly in agreement with the experimental heat capacity, while heat capacity behaves singularly and discontinuously in the standard BCS model.A smooth peak in the heat capacity is observed which is interpreted as a signature of the transition from the superfluid to the normal phase.

关键词： BCS模型模型参数计算热性能平均值金兹堡-朗道理论差距实验数据

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It is Time for a Change： oPetri Dishes Weaken Cells

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Journal of Bionic Engineering 2012年第3期9卷 353-357页

作者： Andrei P. Sommer Mike kh. Haddad Hans-Joerg Fecht Institute of Micro and Nanomaterials University of Ulm 89081 Ulm Germany Institute for Nanotechnology Karlsruhe Institute for Technology 76344 Eggenstein-Leopoldshafen Germany

We wish to draw the attention to a potential deficiency in the biocompatibility of polystyrene cell culture dishes which is caused by a softening of the material under relevant culture conditions. The finding confirms the central hypothesis of our previous model study. In it we assumed a local increase in pH at the interface between the hydrophilic polymer and liquid. The finding is of considerable biological interest. Polystyrene tissue culture dishes are now in use for 50 years. To the best of our knowledge their biocompatibility has never been challenged. Here we report the first experimental proof that exposure to water softens the surface of polystyrene Petri dishes. We expect that our results will stimulate the development of a new generation of cell culture devices, including Petri dishes and culture flasks, and the establishment of improved biomimetic settings for tissue engineering and stem cell research. New non-swelling biomaterials or nanocoatings designed to reduce the swelling of polymer ct, lture dishes could improve cell performance. The need for further study is clear.

关键词： Petri dish polystyrene biomimetic triangle nanoindentation stem cells diamond

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Efficacy of custom-made soft keratoconus lenses on corneal aberrations and photic phenomena in patients with keratoconus:a corneal topography imaging based study

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International Journal of Ophthalmology(English edition) 2023年第1期16卷 67-74页

作者： Aysegul Penbe Hatice Selen Kanar Aysu Karatay Arsan sevda Aydın Kurna Department of Ophthalmology Kartal Dr.Lutfi Kirdar Training and Research HospitalHealth Science UniversitySemsi Denizer CaddesiE-5Kartal Istanbul 34890Turkey Department of Ophthalmology Fatih Sultan Mehmet Training and Research HospitalHealth Science UniversityE-5Icerenkoy 34752IstanbulTurkey

AIM:To evaluate the efficacy of custom-made soft keratoconus(KC)lenses on corneal aberrations and photic phenomena in two different optical zones in patients with ***:Sixty eyes of 42 patients with KC were examined at baseline and after fitting HydroCone(Toris K)soft silicone hydrogel *** spectacle-corrected visual acuity(BSCVA)and contact lens-corrected visual acuity(CLCVA)were ***-and higher-order corneal aberrations(LOAs and HOAs)were measured with and without Toris K lenses and compared in central 4.5 mm and 7 mm *** pupil diameter and subjective photic phenomena were also ***:Mean CLCVA was significantly improved compared to BSCVA(P6.00 mm(85.7%).CONCLUSION:Toris K lenses provide good visual results and a significant reduction in central corneal aberrations in patients with KC but could cause an increase in peripheral *** practical and nonsurgical approach appears to be an effective method for the visual management of KC.

关键词： corneal aberrations custom-made soft keratoconus lenses higher-order aberrations keratoconus lower-order aberrations pupillography

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The Species of the Genus Gagea Salisb. Is Distribution in the Flora of the Urgut Region (Uzbekistan)

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American Journal of Plant Sciences 2022年第9期13卷 1183-1195页

作者： Gulsauir T. Kurbaniyazova Igor G. Levichev Ulugbek kh. Kadirov Institute of Botany of the Academy of Sciences of the Republic of Uzbekistan Tashkent Uzbekistan Institute of Botany after Named V. L. Komarova Russia Academy Sciences Sankt Peterburg Russia

In this article, 1650 herbarium specimens of representatives of the genus Gagea Salisb. were used as research material from the collections of the National Herbarium of Uzbekistan (TASH). It presents a geographical coordinate system, habitats, phenology, and economic values. The distribution of species in Uzbekistan was indicated by the phytogeographic regions of the country. The herbarium material of Gagea Salisb. has been studied in TASH, SAMSU and MSU. The TASH Herbarium presents samples from 1914 to 2019. The review was written using information published between 1988 and 2019 from a number of reliable sources, including Science Direct, Springer, PubMed, EMBASE and Wikipedia.

关键词： Gagea Salisb. Habitat Phenology Economic Significance Altitude Zone Geographical Map Urgut Region

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