DOKLADY NATSIONALNOI AKADEMII NAUK BELARUSI最新文献_第9页

Stabilization of the amorphous state of calcium carbonate-phosphates with phosphate ions 磷酸根离子对碳酸钙磷酸盐非晶态的稳定作用

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DOKLADY NATSIONALNOI AKADEMII NAUK BELARUSI Pub Date : 2022-11-03 DOI: 10.29235/1561-8323-2022-66-5-501-508

I. E. Glazov, V. Krut’ko, O. Musskaya, A. Kulak

引用次数: 0

Photon density of states effect on Lamb shift in plasmas 光子态密度对等离子体兰姆位移的影响

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DOKLADY NATSIONALNOI AKADEMII NAUK BELARUSI Pub Date : 2022-11-02 DOI: 10.29235/1561-8323-2022-66-5-495-500

D. Novitsky, S. Gaponenko

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Polynomial randomized algorithm for the asymmetric travelling salesman problem 非对称旅行商问题的多项式随机算法

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DOKLADY NATSIONALNOI AKADEMII NAUK BELARUSI Pub Date : 2022-11-02 DOI: 10.29235/1561-8323-2022-66-5-489-494

M. Barketau

引用次数: 0

Periodic and almost periodic solutions of the Riccati equations with linear reflecting function 线性反射函数Riccati方程的周期解和概周期解

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DOKLADY NATSIONALNOI AKADEMII NAUK BELARUSI Pub Date : 2022-11-02 DOI: 10.29235/1561-8323-2022-66-5-479-488

M. S. Belokursky

{"title":"Periodic and almost periodic solutions of the Riccati equations with linear reflecting function","authors":"M. S. Belokursky","doi":"10.29235/1561-8323-2022-66-5-479-488","DOIUrl":"https://doi.org/10.29235/1561-8323-2022-66-5-479-488","url":null,"abstract":"The method of Mironenko’s reflecting function is used for investigation of Riccati equations. The class of Riccati equations with certain-type reflecting function has been preliminarily constructed. The necessary and sufficient conditions, under which the Riccati equation would have a reflecting function linear in phase variable, are proved. These conditions are constructive in nature, since on their basis the formula is obtained, which shows the linear in phase variable reflecting function in terms of the coefficients of the Riccati equation. Additionally, the relationship between the parity (oddness) property of the coefficients of the Riccati equation and the existence of a reflecting function linear in phase variable is investigated. The application of the method of Mironenko’s reflecting function to the constructed class of Riccati equations revealed sufficient conditions, under which all its solutions are periodic or almost periodic. A sign of no periodic solutions for almost periodic Riccati equations is obtained. An example of the quasi-periodic Riccati equation with quasi-periodic reflecting function, which has a periodic solution, is given.","PeriodicalId":41825,"journal":{"name":"DOKLADY NATSIONALNOI AKADEMII NAUK BELARUSI","volume":null,"pages":null},"PeriodicalIF":0.1,"publicationDate":"2022-11-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45080804","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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Comparative analysis of the structure-function changes in the endodermal cells of tomato leaf petioles after gravity stimulation and phytohormone action 重力刺激与植物激素作用后番茄叶柄内胚层细胞结构功能变化的比较分析

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DOKLADY NATSIONALNOI AKADEMII NAUK BELARUSI Pub Date : 2022-09-08 DOI: 10.29235/1561-8323-2022-66-4-425-432

S. V. Sukhaveyeva, A. M. Kabachevskaya, T. Kuznetsova, I. Volotovski

引用次数: 1

Crystal structure of the system of (1-y)(BiFeO3)-y(Ba1-xSrxTiO3) solid solution. (1-y)(BiFeO3)-y(Ba1-xSrxTiO3)固溶体体系的晶体结构。

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DOKLADY NATSIONALNOI AKADEMII NAUK BELARUSI Pub Date : 2022-09-08 DOI: 10.29235/1561-8323-2022-66-4-397-403

D. V. Zheludkevich, S. I. Latushko, M. Silibin, A. N. Chobot, A. Sysa, K. N. Neklyudov, G. M. Chobot, D. Karpinsky

{"title":"Crystal structure of the system of (1-y)(BiFeO3)-y(Ba1-xSrxTiO3) solid solution.","authors":"D. V. Zheludkevich, S. I. Latushko, M. Silibin, A. N. Chobot, A. Sysa, K. N. Neklyudov, G. M. Chobot, D. Karpinsky","doi":"10.29235/1561-8323-2022-66-4-397-403","DOIUrl":"https://doi.org/10.29235/1561-8323-2022-66-4-397-403","url":null,"abstract":"The crystal structure of the system of (1-y)(BiFeO3)-y(Ba1-xSrxTiO3) (0 ≤ x ≤1; 0,2 ≤ y ≤ 0,4) solid solutions was studied based on the X-ray diffraction data and the scanning electron microscopy results. The obtained results have allowed determining the concentration ranges of a single-phase structural state, as well as the regions of coexistence of two structure phases. It is shown that an increase in the concentration of the dopant ions leads to a decrease in rhombohedral distortions. The structure of the compounds with y = 0.25-0.33 is characterized by the coexistence of the rhombohedral and pseudocubic phases. Further chemical doping leads to the transformation of the structure; it becomes single-phase and has a cubic symmetry. Splitting of the reflections specific to the rhombohedral phase completely disappears for the compounds with y = 0.35; 0.40. Particular attention is paid to the analysis of the structure of solid solutions in the region of the concentration phase transition. The evolution of crystallite morphology was determined as a function of the type of structure distortions and dopants concentration.","PeriodicalId":41825,"journal":{"name":"DOKLADY NATSIONALNOI AKADEMII NAUK BELARUSI","volume":null,"pages":null},"PeriodicalIF":0.1,"publicationDate":"2022-09-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44850579","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Formation and antibacterial properties of graphitic carbon nitride 氮化石墨碳的形成及抗菌性能

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DOKLADY NATSIONALNOI AKADEMII NAUK BELARUSI Pub Date : 2022-09-08 DOI: 10.29235/1561-8323-2022-66-4-454-459

E. Chubenko, A. V. Baglov, O. Emeliyanova, N. Dudchik, A. Drazdova, V. Borisenko

引用次数: 0

Investigating of the polymorphism of Solanaceae R2R3 Myb and Brassica Myb114 genes of transcription factors in connection with the anthocyanin biosynthesis regulation 茄科R2R3-Myb和芸苔属Myb114转录因子基因多态性与花青素生物合成调控的研究

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DOKLADY NATSIONALNOI AKADEMII NAUK BELARUSI Pub Date : 2022-09-08 DOI: 10.29235/1561-8323-2022-66-4-414-424

O. Babak, N. Anisimova, T. Nikitinskaya, N. Nekrashevich, K. Yatsevich, L. V. Drozd, D. Fateev, F. A. Berensen, A. Artemyeva, A. Kilchevsky

{"title":"Investigating of the polymorphism of Solanaceae R2R3 Myb and Brassica Myb114 genes of transcription factors in connection with the anthocyanin biosynthesis regulation","authors":"O. Babak, N. Anisimova, T. Nikitinskaya, N. Nekrashevich, K. Yatsevich, L. V. Drozd, D. Fateev, F. A. Berensen, A. Artemyeva, A. Kilchevsky","doi":"10.29235/1561-8323-2022-66-4-414-424","DOIUrl":"https://doi.org/10.29235/1561-8323-2022-66-4-414-424","url":null,"abstract":"Based on comparison of R2R3 Myb genes in Solanaceae (S. lycopersicum: Ant1, Ant2, S. melongena: Myb1, C. annuum: Myb113-like1 and Myb113-like2) and Brassicaceae crops, a search for orthologous sequences was The sequences encoding Myb114 TF in Brassica oleracea and Brassica rapa was found to be the closest in a nucleotide structure to the previously investigated genes in Solanaceae. Тhе polymorphism in the promoter region of the Capsicum annuum Myb113-like1 gene that regulates anthocyanin biosynthesis: an additional 148 bp repeat and 2(1) bp insertion in the forms with impaired anthocyanin synthesis in fruits was studied. A relationship between the presence of an insert in the promoter (Myb113-like1pr+148) and polymorphisms in the exon regions of Myb113-like1delTand Myb113-like2C/Аgenes associated with impaired anthocyanin synthesis was established. A number of polymorphisms of the Myb114 gene in vegetable crops of the cabbage family (Brassica oleracea, Brassica rapa), which closely correlate with high/low accumulation of anthocyanins in leaves, were identified. In B. oleracea, SNPs that lead to the replacement of two amino acids located in the region of DNAbinding domains were found, which leads to a change in the efficiency of binding of this transcription factor and the promoters of structural biosynthesis genes. A protein sequence encoded by the Myb114 gene in accessions of the leafy turnip (B. rapa) with a high accumulation of anthocyanins in the leaves differed from the accessions without anthocyanin accumulation in the leaves by five amino acids, while the regions of DNA-binding domains were the same in the forms with various anthocyanin accumulation.","PeriodicalId":41825,"journal":{"name":"DOKLADY NATSIONALNOI AKADEMII NAUK BELARUSI","volume":null,"pages":null},"PeriodicalIF":0.1,"publicationDate":"2022-09-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48785207","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Scientific justification of the breeding program of red dairy cattle in the Republic of Belarus 白俄罗斯共和国红奶牛育种计划的科学论证

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DOKLADY NATSIONALNOI AKADEMII NAUK BELARUSI Pub Date : 2022-09-08 DOI: 10.29235/1561-8323-2022-66-4-460-472

V. Gusakov, I. Sheiko, U. N. Tsimoshanka, D. M. Bаgdanovic, N. V. Klimets, N. I. Pesotski, I. N. Koronets, A. Muzyka, V. N. Rogach, R. V. Berezovik

引用次数: 0

Interaction of recombinant human lactoferrin and SARS-CoV-2 virus to heparin-protein conjugate 重组人乳铁蛋白与SARS-CoV-2病毒对肝素蛋白偶联物的相互作用

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DOKLADY NATSIONALNOI AKADEMII NAUK BELARUSI Pub Date : 2022-09-08 DOI: 10.29235/1561-8323-2022-66-4-404-413

D. Semenov, I. Vashkevich, A. S. Vladyko, O. Sviridov

{"title":"Interaction of recombinant human lactoferrin and SARS-CoV-2 virus to heparin-protein conjugate","authors":"D. Semenov, I. Vashkevich, A. S. Vladyko, O. Sviridov","doi":"10.29235/1561-8323-2022-66-4-404-413","DOIUrl":"https://doi.org/10.29235/1561-8323-2022-66-4-404-413","url":null,"abstract":"The advantages of the complex of recombinant human lactoferrin (rhLF) with europium ions have been used to establish quantitative parameters of specific interaction of rhLF with immobilized heparin-protein conjugate as a model of cell-surface heparan sulfate proteoglycans. Heparin coupled through terminal formyl by reductive amination to an inert protein was adsorbed through the protein part in the wells of a polystyrene microplate. The rhLF–Eu3+ complex obtained from native rhLF contains 0.8 mol of lanthanide ion per mol of protein (40 % saturation level). Equilibrium in the heterophase binding system is established within 1 min at room temperature, and the calculated association constant of the rhLF-heparin complex is 2.1 × 107 M–1. The reversible and saturable character of binding rhLF labeled by Eu3+ at the active site to heparin was confirmed by the transition of rhLF–Eu3+ into the liquid phase when a 1000-fold molar excess of unlabeled rhLF was added to the system. Based on the affinity of rhLF for glycosaminoglycan, a blocking effect of this protein on the binding of the SARS-CoV-2 virus to the immobilized heparin-protein conjugate that imitates proteoglycan on the host cell surface was revealed. Pretreatment of the adsorbed conjugate with a solution of rhLF (10 µg per well) reduces the specific binding of 100 ng of viral particles added to the well by approximately 80 %. The presented results allow one, in particular, to evaluate the integrity of the structure and activity of rhLF as a possible substance in food supplements and pharmaceuticals and may be useful in developing combined drugs for corona virus infection.","PeriodicalId":41825,"journal":{"name":"DOKLADY NATSIONALNOI AKADEMII NAUK BELARUSI","volume":null,"pages":null},"PeriodicalIF":0.1,"publicationDate":"2022-09-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42350187","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0