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Landscape alteration affects the demography of an endangered avian predator by reducing the habitat quality

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Avian Research 2022年第2期13卷 194-201页

作者： Dimitar Demerdzhiev Dobromir Dobrev Georgi Popgeorgiev Stoycho Stoychev bulgarian society for the protecaon of birds/birdlife bulgaria 5 Leonardo Da Vinci Str.Plovdiv4000Bulgaria National Museum of Natural History Department of ZoologySofiaBulgaria

Habitat transformation is identified as major threat to biodiversity loss globally,affecting threatened *** in land use can alter the abundance and distribution of birds of prey by affecting habitat availability and *** this study,we used multivariate analyses to investigate the effect of habitat alteration on the demography of a declining Eastern Imperial Eagle(Aqufla heliaca),making assumptions for future population *** used the Generalized Linear Mixed Models with Poisson distribution and Log link function,searching a relationship between the demographic parameters and the landscape structure and possible effects of *** our study area,habitat change affected dramatically permanent grasslands,shrinking their *** we expected,the share of grasslands in eagles’territories significantly affected occupancy rate,but not productivity and breeding *** found that occupancy rate decreased significantly,while productivity and breeding frequency showed no *** the effect of habitat alteration on Eastern Imperial Eagle demography,we found out that territory quality was a more powerful factor driving the response of a top predator to the alteration of favorite foraging *** the habitat quality in source territories had a significant positive effect on eagle *** found that simple rules to predict adverse agricultural impact on territory abandonment or breeding productivity of a top predator were not *** results could be used for planning conservation of other large territorial raptors,facing the same type of threat.

关键词： predator globally habitat

Heideggerian Thought in the Light of Iranian-Islamic Wisdom

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Philosophy Study 2024年第3期14卷 123-128页

作者： Bogdana Todorova bulgarian Academy of Sciences SofiaBulgaria

A prominent Iranian philosopher Ahmad Fardid considered the influential German philosopher Martin Heidegger as“the only Western philosopher who understood the world and the only philosopher whose insights were congruent with the principles of the Islamic Republic”.The report aimed to present Fardid’s interpretation of Heidegger in the light of Iranian-Islamic *** philosopher believes that Heidegger’s thought responds to the most important intellectual crisis of the West civilization that is nihilism and to reach the possibility of an“other beginning”of thinking that he calls“No-longer-metaphysical-thought”.Considering these two fundamental features,Fardid founds powerful religious-spiritual tendencies in Heidegger’s thinking.

关键词： Heidegger Iran Ahmad Fardid wisdom

Microscopic shell-model description of irrotational-flow dynamics in^(102)Pd

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Chinese Physics C 2024年第1期48卷 82-93页

作者： H.G.Ganev Joint Institute for Nuclear Research DubnaRussia Institute of Mechanics Bulgarian Academy of SciencesSofiaBulgaria

The structure of the low-lying collective excitations in 102Pd is examined within the recently proposed microscopic shell-model version of the Bohr-Mottelson(BM)collective model.A good description of the excitation energies of the lowest ground,γ,andβbands,as well as the staggering function between the collective states of theγband and some other energy-dependent quantities,is *** low-energy intraband and interband quadrupole dynamics is reasonably well described within the present proton-neutron sympletic based shell-model approach without the use of an effective charge and compared with the predictions of nuclear structure *** obtained results of the present study shed light on the question of the existence of irrotational-flow type quadrupole dynamics,which lies on the ground of the original BM model of quantized vibrations and surface-wave rotations in atomic nuclei.

关键词： shell-model version of the Bohr-Mottelson model irrotational-flow dynamics proton-neutron symplectic model Sp(12,R)dynamical algebra

Evaluation of Serum Anti-Müllerian Hormone (AMH) Values for 28,016 bulgarian Women: Prognostic Statistical Model of Age Specific AMH Declining

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Open Journal of Obstetrics and Gynecology 2024年第5期14卷 651-673页

作者： Martin Vladimirov Evan Gatev Desislava Tacheva Aleksandra Kalacheva Milena Bojilova Serpil Izet Alexander Angelov Nedyalko Kalatchev Iavor K. Vladimirov Sbalagrm-Sofia Sofia Bulgaria bulgarian Academy of Science Institute of Molecular Biology Sofia Bulgaria Department of Cytology-Histology and Embryology Sofia University &#8220St. Kliment Ohridski&#8221 Sofia Bulgaria Cibalab Boulevard &#8220Akademik Ivan Evstratiev Geshov&#8221 Sofia Bulgaria Synevo bulgaria Sofia Bulgaria

The present study aims to establish a relationship between serum AMH levels and age in a large group of women living in bulgaria, as well as to establish reference age-specific AMH levels in women that would serve as an initial estimate of ovarian age. A total of 28,016 women on the territory of the Republic of bulgaria were tested for serum AMH levels with a median age of 37.0 years (interquartile range 32.0 to 41.0). For women aged 20 - 29 years, the bulgarian population has relatively high median levels of AMH, similar to women of Asian origin. For women aged 30 - 34 years, our results are comparable to those of women living in Western Europe. For women aged 35 - 39 years, our results are comparable to those of women living in the territory of India and Kenya. For women aged 40 - 44 years, our results were lower than those for women from the Western European and Chinese populations, close to the Indian and higher than Korean and Kenya populations, respectively. Our results for women of bulgarian origin are also comparable to US Latina women at age 30, 35 and 40 ages. On the base on constructed a statistical model to predicting the decline in AMH levels at different ages, we found non-linear structure of AMH decline for the low AMH 3.5) the dependence of the decline of AMH on age was confirmed as linear. In conclusion, we evaluated the serum level of AMH in bulgarian women and established age-specific AMH percentile reference values based on a large representative sample. We have developed a prognostic statistical model that can facilitate the application of AMH in clinical practice and the prediction of reproductive capacity and population health.

关键词： Anti-Müllerian Hormone Women Age Ovarian Response Ethnicity Prognostic Statistical Model

Dielectric spectroscopy characterization of Naþ ion-conducting polymer nanocomposite system PEO–PVP–NaIO_(4)–TiO_(2)

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Journal of Advanced Dielectrics 2024年第1期14卷 59-73页

作者： Georgi B.Hadjichristov Daniela G.Kovacheva Yordan G.Marinov Daniela B.Karashanova Todor E.Vlakhov Nicola Scaramuzza Georgi Nadjakov Institute of Solid State Physics bulgarian Academy of Sciences 72 Tzarigradsko Chaussee Blvd.BG-1784 SofiaBulgaria Institute of General and Inorganic Chemistry bulgarian Academy of Sciences Acad.Georgi Bonchev Str. 11 bd.BG-1113 SofiaBulgaria Institute of Optical Materials and Technologies“Acad.Jordan Malinowski” Bulgarian Academy of Sciences Acad.Georgi Bonchev Str.bl.109BG-1113 SofiaBulgaria Dipartimento di Fisica Universita degli Studi della Calabria Via P.BucciCubo 33BRende(CS)IT-87036Italy

We studied the effect of titanium dioxide(TiO_(2))nanoparticles(NPs)on dielectric behavior of Naþion-conducting salt-complexed polymer nanocomposite system formed from a binary polymer blend of poly(ethylene oxide)(PEO)and polyvinyl pyrrolidone(PVP),with the addition of both sodium metaperiodate(NaIO_(4))at concentration 10 wt.%and TiO_(2) NPs of size10 nm,at concentrations 1,2,3,4 and 5 wt.%.Free standing nanocomposite PEO/PVP/NaIO_(4)/TiO_(2) films(150m)were characterized at room-temperature by analyzing their complex electrical impedance and dielectric spectra in the range 1 Hz–1 *** the concentration of 3 wt.%of TiO_(2) NPs,both ion conductivity and dielectric permittivity of the PEO/PVP/NaIO_(4)/TiO_(2) ion-conducting dielectrics reach an enhancement by more than one order of magnitude as compared to nanoadditive-free case.

关键词： Dielectric properties sodium-ion-polymer electrolyte systems titanium dioxide(TiO_(2))nanoparticles nanocomposites KWW model

Measurement of yields and angular distributions ofγ-quanta from the interaction of 14.1 MeV neutrons with oxygen,phosphorus,and sulfur

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Chinese Physics C 2024年第3期48卷 79-92页

作者： D.N.Grozdanov N.A.Fedorov S.B.Dabylova Yu.N.Kopatch I.N.Ruskov V.R.Skoy T.Yu.Tretyakova C.Hramco P.I.Kharlamov G.V.Pampushik P.G.Filonchik A.V.Andreev Joint Institute for Nuclear Research(JINR) DubnaRussia Institute for Nuclear Research and Nuclear Energy Bulgarian Academy of SciencesSofiaBulgaria Faculty of Physics Lomonosov Moscow State UniversityMoscowRussia L.N.Gumilyov Eurasian National University AstanaKazakhstan Skobeltsyn Institute of Nuclear Physics Moscow State UniversityMoscowRussia Institute of Chemistry of Moldova ChisinauRepublic of Moldova Moscow Institute of Physics and Technology MoscowRussia

A study of the inelastic scattering of neutrons with an energy of 14.1 MeV on the nuclei of oxygen,phosphorus,and sulfur was performed at the TANGRA facility at JINR(Dubna).The experiment aimed to refine existing data and obtain new data on the yields and angular distributions ofγ-quanta emitted by the studied nuclei due to neutron-induced nuclear reactions using the tagged neutron *** types of detector systems were used to registerγ-***γ-ray yields were measured using a high-purity germanium(HPGe)*** angular distributions ofγ-rays were obtained using a system of 18 scintillation detectors based on bismuth germanite Bi_(4)Ge_(3)O_(12)(BGO)located around the *** performed experiments measured the yields of two transitions for the reaction of tagged neutrons with 16O,nine transitions for the reaction with ^(31)P,and nine transitions for the reaction with ^(32)S for the first *** angular anisotropy of theγ-radiation accompanying the inelastic scattering of neutrons with an energy of 14.1 MeV on ^(31)P nuclei was also measured for the first time.

关键词： tagged neutron method yields of gamma-quanta high-resolution gamma-spectrometry neutron-nuclear reactions neutron scattering

Convergence Issues Associated with Cutoff Energies and Ab Initio Studies of Adsorption of CO on W and Pt

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Journal of Materials Science and Chemical Engineering 2024年第3期12卷 1-8页

作者： Sathya Hanagud Roussislava Zaharieva School of Aerospace Engineering Georgia Institute of Technology Atlanta Georgia bulgarian Academy of Sciences Space Research Institute “Acad. Georgy Bonchev” Str. Bl1 Sofia Sofia Bulgaria

The experimental research programs of 1950s, to understand the adsorption of CO on W surfaces, changed to ab initio studies in 2000s. The goals were to seek improved practical applications. Most of the studies were based on density functional theory. Many studies also used programs, such as VASP (Vienna Abinitio simulation package) and CPMD. The computational procedures used plane wave approximations. This needed studies with selection of K points and cutoff energy selection to assure convergence in energy calculations. Observations and analysis of papers published from 2006 to 2022 indicate that the cutoff energies were selected arbitrarily without any needed convergence studies. By selecting a published 2006 paper, this paper has clearly showed that an arbitrary selection of cutoff energy, such as 460 eV, is not in the range of, cutoff energies that assure convergence of energy calculations, with ab initio methods and have indicated correction procedures. .

关键词： CO Adsorption Tungsten and Pt surfaces Cutoff Energy Selection Convergence of Ab Initio Energy

Biochemical Liver Functions and Molecular Identification of Fasciola hepatica from Experimentally Infected Rat Model

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Open Journal of Animal Sciences 2024年第2期14卷 88-100页

作者： Omnia M. Kandil Emad B. Ata Margarita P. Gabrashanska Hatem A. Shalaby Tamer H. Abd El-Aziz Noha M. F. Hassan Soad M. Nasr Mohamed A. Helal Ebtesam M. Al-Olayan Department of Parasitology & Animal Diseases Veterinary Research Institute National Research Centre Giza Egypt Institute of Experimental Morphology Pathology and Anthropology with Museum Bulgarian Academy of Sciences Sofia Bulgaria Department of Zoology Collage of Science King Saud University Riyadh Saudi Arabia

The current study was performed to evaluate the liver function status as well as molecular characterization of the recovered worms in rats experimentally infected with F. hepatica. Sixteen male Wister rats aged 30 days were randomly allocated into two groups (n = 8). The first group was infected orally with 15 viable encysted metacercaria of F. hepatica per animal. The other group was kept non-infected (control group). At zero time (before infection), the 2nd, 4th, 6th, 8th, 10th, 12th and 14th weeks post-infection (WPI), blood and serum samples were collected via puncture of retro-orbital plexus of veins from each rat. Serum enzyme level (AST and ALT) and total protein were measured, and the serum protein profile was carried out using agarose gel electrophoresis. During the period of the experiment, serum ALT and AST activities and serum total globulins significantly increased while serum total proteins and albumin markedly decreased in the infected group. On the 14th WPI, the data of the electropherogram showed that globulin fractions (α1-, β- and γ-globulin) levels were significantly increased while α2-globulin was markedly decreased in the infected group. The molecular analysis confirmed the amplification of the ITS1, ITS2 and NDI genes of F. hepatica recovered from the infected liver of rats with amplicon sizes of 630, 510 and 560 bp, respectively. Sequencing of the amplified ITS gene resulted in the determination of 3 strains (PP108836, PP108837, and PP108838). Also, analysis of the ITS2 gene resulted in obtaining 3 isolates under the accession numbers (PP109065, PP109066, and PP109067). In conclusion, fasciolosis in the rat model is suitable for routine experimental infections and caused a pronounced liver dysfunction with discharging of the Fasciola eggs in the faeces and the development of adult stages in the bile ducts. Furthermore, molecular techniques are a sensitive

关键词： Fasciola hepatica Liver Functions Serum Enzymes Serum Protein Electrophoresis Molecular Characterization

A Survey of bulgarian(National)Planning and Regulation Acts and Documents Concerning Urban Sprawl

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Journal of Civil Engineering and Architecture 2024年第7期18卷 318-325页

作者： Peter Nikolov Department of Architecture and Urban Studies Faculty of ArchitectureVarna Free UniversityVarna 9007Bulgaria

In the last 20 years,the built-up areas of Europe have increased by 20%,while the population increased by 6% *** the fact that urban sprawl occurs when the rate of land-use conversion exceeds the rate of population growth,we can now talk about the existence of urban sprawl in *** bulgaria,during the period 2004-2012,the developers’interest in agricultural and forest lands located outside the development zones of different settlements increased in parallel with the construction development of urban areas,mainly around larger towns,resort and holiday *** low price of agricultural lands can be seen as one of the main reasons in this *** issues of the utilization of agricultural lands,their conversion into urban(construction)lands,and zoning have been defined by a number of national and local legal acts,which were passed and subsequently renewed/modified in a more recent *** main act regulating the spatial planning and construction on the territory of the Republic of bulgaria is the SPA(Spatial Planning Act).The ALPA(Agricultural Land Protection Act)and its corresponding regulations provide an appropriate legal basis for the protection of agricultural lands and their ***,as different acts and regulations concerning issues related to the conversion of agricultural,forest,and protected areas are not in conflict,they may be said to have been *** are,however,some points which leave possibilities for uncontrolled urban growth.

关键词： Urban sprawl urban planning bulgarian spatial planning