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CISPLATIN AND PROGESTERONE SEPARATE AND JOINT ACTION ON RAT THYMUS NUCLEAR PHOSPHOLIPIDS COMPOSITION AND CONTENT 顺铂和黄体酮对大鼠胸腺核磷脂组成和含量的单独和联合作用
Pub Date : 2023-07-07 DOI: 10.46991/pysu:b/2023.57.2.133
Agapi G. Hovhannisyan, N. R. Hakobyan, Zh. V. Yavroyan, E. Gevorgyan
The antitumor agent cisplatin and progesterone separate and joint action on content of total phospholipids and their individual fractions in nuclei from rat thymus cells were investigated. When used separately, cisplatin and progesterone exhibit its own distinctive properties. Cisplatin reduces, and progesterone, on the contrary, increases the content of total phospholipids. When used together, the effects of these drugs are summed up. Thus total phospholipid content of rat thymus cell nuclei increases by 17% after the joint injection of cisplatin and progesterone. These changes have different effects on quantities of individual phospholipid fractions. It is assumed that the effects of cisplatin and progesterone, both in their separate and joint action, can be mediated by quantitative changes in internuclear lipids that in turn can regulate the main functions of the cell nuclei.
研究了抗肿瘤药物顺铂和黄体酮对大鼠胸腺细胞核中总磷脂及其各个部分含量的单独作用和联合作用。在单独使用时,顺铂和黄体酮表现出各自不同的特性。顺铂会减少总磷脂的含量,而黄体酮则会增加总磷脂的含量。当这些药物同时使用时,它们的作用会相加。因此,在联合注射顺铂和黄体酮后,大鼠胸腺细胞核的总磷脂含量增加了 17%。这些变化对单个磷脂组分的数量有不同的影响。据推测,顺铂和黄体酮的作用,无论是单独作用还是联合作用,都可以通过核内脂质的定量变化来介导,进而调节细胞核的主要功能。
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引用次数: 0
EVALUATION OF ETHANOL AND BIOMASS PRODUCTION RATE BY DIFFERENT $SACCHAROMYCES~CEREVISIAE$ STRAINS DEPENDING ON EXTERNAL pH AND TEMPERATURE 不同 SACCHAROMYCES~CEREVISIAE$ 菌株乙醇和生物质生产率受外部 pH 值和温度影响的评价
Pub Date : 2023-07-07 DOI: 10.46991/pysu:b/2023.57.2.141
Anahit H. Shirvanyan
Bioethanol production is in high demand due to its potential to replace transportation fuel and its ability to be renewable and long-lasting. Therefore, the bioconversion of fermentable sugars to ethanol is of central importance. The work aimed to explore yeast properties changes during fermentation at different pHs and temperature conditions. Biomass production, specific growth rate (SGR), fermentation products, and metabolite composition and quantity changes were studied at 25℃, 30℃, and 37℃ as well as pH 5 and pH 6.5 conditions. SGR data shows that at 25℃ and 30℃ pH 5 is optimal for yeast biomass production. At pH 5.0–6.5, the biomass production of the ATCC 9804 strain almost 2 times exceeds the same parameter for another strain. The highest biomass production was detected at 30℃ and pH 5. Ethanol production by yeast increases as the growth temperature decreases at pH 5 in contrast to pH 6.5, where the temperature changes within 30–37℃ range have no significant effect on it in both strains. At 30℃ ethanol concent­ra­tion in the extracellular medium reached ~117 mM in the case of ATCC 13007 strain, whereas for ATCC 9804 the same parameter was 1.4-fold lower. Both strains had the same substrate assimilation rate. Glycerol production reduces with increasing growth temperature and pH; the highest glycerol concentration (6.1 mM) was observed within 32 h growth of ATCC 9804 strain at 25℃, pH 5 and reaches 5.5 mM within 24 h growth of ATCC 13007 strain under the same conditions. At pH 5 and 6.5, the free energy for glycerol production was 2.3-fold and 4-fold higher compared to that of ethanol and acetate production processes in both strains. Gibbs free energy of ethanol production reaches the lowest value compared to the same parameter of acetate and glycerol production at pH 5, suggesting a preference for the alcoholic fermentation metabolic pathway under these conditions. The lowest acetate production was observed after 24 hours of growth of the ATCC 13007 strain at 37°C and pH 5, with ΔG = 173.9 kJ/mol. Obtained data highlights temperature stress mechanisms regulation of yeast and can be used for improving ethanol production processes and yeast genetic modification tools.
由于生物乙醇具有替代运输燃料的潜力,且可再生、使用寿命长,因此其生产需求量很大。因此,将可发酵糖类生物转化为乙醇至关重要。这项工作旨在探索酵母在不同 pH 值和温度条件下发酵过程中的特性变化。在 25℃、30℃ 和 37℃以及 pH 5 和 pH 6.5 条件下,研究了生物质产量、特定生长率(SGR)、发酵产物、代谢物组成和数量的变化。SGR 数据显示,在 25℃和 30℃条件下,pH 值为 5 最有利于酵母生物量的产生。在 pH 值为 5.0-6.5 时,ATCC 9804 菌株的生物量产量几乎是另一菌株相同参数的 2 倍。在 pH 值为 5 和 30℃时,酵母菌的生物量产量最高;在 pH 值为 5 时,酵母菌的乙醇产量随着生长温度的降低而增加;而在 pH 值为 6.5 时,温度在 30-37℃ 范围内的变化对两种菌株的乙醇产量均无显著影响。30℃ 时,ATCC 13007 菌株胞外培养基中的乙醇浓度达到约 117 mM,而 ATCC 9804 菌株的这一参数则低 1.4 倍。两株菌株的底物同化率相同。甘油产量随着生长温度和 pH 值的升高而减少;ATCC 9804 菌株在 25℃、pH 值为 5 的条件下生长 32 小时后,甘油浓度达到最高(6.1 mM),而 ATCC 13007 菌株在相同条件下生长 24 小时后,甘油浓度达到 5.5 mM。在 pH 值为 5 和 6.5 时,两株菌株生产甘油的自由能分别是生产乙醇和醋酸过程的 2.3 倍和 4 倍。在 pH 值为 5 时,乙醇生产的吉布斯自由能与乙酸盐和甘油生产的相同参数相比达到最低值,这表明在这些条件下酒精发酵代谢途径更受青睐。ATCC 13007 菌株在 37℃、pH 值为 5 的条件下生长 24 小时后,醋酸盐产量最低,ΔG = 173.9 kJ/mol。获得的数据强调了温度胁迫对酵母的调控机制,可用于改进乙醇生产工艺和酵母基因改造工具。
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引用次数: 0
STUDY OF HYBRIDIZATION OF COMPLEMENTARY SINGLE-STRANDED POLYNUCLEOTIDES POLY(rA) AND POLY(rU) 单链多聚烯酸聚酯(POLY(rA) 和 POLY(rU) 的杂化研究
Pub Date : 2023-07-07 DOI: 10.46991/pysu:b/2023.57.2.126
Zvart H. Movsisyan
The study of the interaction of intercalators ethidium bromide (EtBr), methylene blue (MB) and groove binding compound Hoechst 33258 (H33258) with single-stranded synthetic polyribonucleotides poly(rA) and poly(rU) has been carried out by the method of UV-melting, at ionic strengths of the solution 0.04 M and 0.1 M. Stirring of poly(rA) and poly(rU) by equal-molar concentrations was shown to result in hybridization with formation of double-stranded (ds-) structure poly(rA)-poly(rU). It was revealed that EtBr, with higher degree in comparison with MB, stimulates hybridization and stabilizes the formed ds-structure poly(rA)-poly(rU). It was also found out that the hybridization process and affinity of EtBr and MB depend on the ionic strength of the solution and these processes occur much more effectively at the ionic strength 0.04 M. On the other hand, it was shown that the groove binding ligand H33258 practically does not affect the stabilization of the formed ds-structure poly(rA)-poly(rU).
通过紫外熔融法研究了插入剂溴化乙锭(EtBr)、亚甲基蓝(MB)和沟槽结合化合物 Hoechst 33258(H33258)与单链合成多核苷酸聚(rA)和聚(rU)的相互作用,溶液离子强度分别为 0.04 M 和 0.1 M。等摩尔浓度的聚(rA)和聚(rU)在搅拌后会发生杂交,形成双链(ds-)结构的聚(rA)-聚(rU)。结果表明,与 MB 相比,EtBr 的浓度更高,它能刺激杂交并稳定所形成的 ds 结构聚(rA)-聚(rU)。研究还发现,EtBr 和 MB 的杂化过程和亲和力取决于溶液的离子强度,在离子强度为 0.04 M 时,杂化过程会更有效。
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引用次数: 0
OLIVINE-BASED SORBENTS FOR REMOVAL OF HEAVY METALS 用于去除重金属的橄榄石基吸附剂
Pub Date : 2023-07-06 DOI: 10.46991/pysu:b/2023.57.2.090
S. Hayrapetyan, M. S. Hayrapetyan, H. H. Khachatryan
Inductively coupled plasma mass spectrometry (ISP-MS) and scanning electron microscope-X-ray fluorescence (SEM-XRF) methods were used for the investigation of olivine sorption properties. It has been shown, that olivine may be applied as a cheap and available material for the sorption of metals, including heavy metals, from wastewater. The comparatively low sorption capacity of olivine may pay off by its accessibility and cheapness. The mechanism of adsorption on the olivine surface may be described as the substitution of magnesium ions by cations of various metals. One trend can be fixed – when ionic radius of the metal cations increases, their sorption increases as well. However, it is hardly possible to tie everything with the ionic radius of metal ion. The specificity of each element is also important.
在研究橄榄石的吸附特性时,采用了电感耦合等离子体质谱法(ISP-MS)和扫描电子显微镜-X 射线荧光法(SEM-XRF)。研究表明,橄榄石可以作为一种廉价且可用的材料,用于吸附废水中的金属,包括重金属。橄榄石的吸附能力相对较低,但由于其易得性和廉价性,橄榄石的吸附能力可能会得到补偿。橄榄石表面的吸附机理可以描述为各种金属的阳离子对镁离子的置换。可以确定的一个趋势是,当金属阳离子的离子半径增大时,其吸附力也会增大。不过,很难将所有情况都与金属离子的离子半径联系起来。每种元素的特异性也很重要。
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引用次数: 0
CORRECTIVE EFFECT OF BREATHING EXERCISES ON THE HEALTH OF ECOLOGICALLY UNFAVORABLE REGIONAL SCHOOLS CHILDREN 呼吸练习对生态不良地区学校儿童健康的矫正作用
Pub Date : 2023-03-27 DOI: 10.46991/pysu:b/2023.57.1.063
Marietta A. Karapetyan, Nonna Yu. Adamyan, Siranush R. Aghajanyan
The normal course of biochemical and physiological processes that ensure the vital activity of the organism, among other systems, also depends on the normal functioning of the respiratory system. A number of external and internal factors can affect the indicators of respiratory movements: frequency, depth, respiratory volume: atmospheric pressure, the amount of oxygen in the atmosphere, the ecological state of the environment, various pathologies of the organism, etc., which become the cause of diseases. In the risk group of these diseases are the inhabitants of the areas near the ecologically unfavorable environment, especially the open mines, particularly the school children of that region. It is possible to reduce these risks and prevent diseases of the mentioned systems by the method of special breathing exercises. Residents of ecological regions, in particular adolescents, are at risk. This risk can be reduced by using the breathing exercise method.The purpose of this study was testing the effectiveness of these exercises on the indicators of the respiratory system of teenagers in the Vardenis Region.
生物化学和生理过程的正常进程,确保生物体的重要活动,以及其他系统,也依赖于呼吸系统的正常功能。许多外部和内部因素可以影响呼吸运动的指标:频率,深度,呼吸量:大气压,大气中的氧气量,环境的生态状态,生物体的各种病理等,这些都成为疾病的原因。这些疾病的危险群体是生态环境不利地区的居民,特别是露天矿山附近的居民,特别是该地区的学童。通过特殊的呼吸练习方法可以降低这些风险并预防上述系统的疾病。生态区域的居民,特别是青少年,面临风险。这种风险可以通过使用呼吸练习方法来降低。本研究的目的是测试这些运动对瓦尔丹尼斯地区青少年呼吸系统指标的有效性。
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引用次数: 0
ANTICANCER EFFECT OF AgTOEPyP4 PORPHYRIN AgTOEPyP4卟啉的抗癌作用
Pub Date : 2023-03-27 DOI: 10.46991/pysu:b/2023.57.1.041
N. Karapetyan, G. Ananyan, S. Haroutiunian
The silver-containing porphyrin Ag-meso-tetra(4-N-hydroxyethylpyridyl)porphyrin (AgTOEPyP4) was investigated as a potential anticancer drug using spectrophotometric, calorimetric and electrophoretic measurements. The studies were conducted on healthy, cancer-induced, and treated by AgTOEPyP4 white mice. DNA was isolated from the liver and tumor tissues of mice. Melting curves were studied in the presence of various stoichiometric concentrations of Mn2+ ions. The character of the DNA–Mn2+ interaction in the tumor differs from that in the norm due to defects in the secondary structure of tumor DNA, which is expressed in the DNA melting characteristics of DNA. It was revealed that the melting parameters, enthalpy, and electrophoretic mobility of DNA isolated from the tumor-bearing mice tissues differed from healthy DNA. It was shown that all studied parameters of the DNA isolated from the liver and tumor treated by AgTOEPyP4 mice approached the norm. The obtained results revealed that AgTOEPyP4 porphyrin has a pronounced therapeutic effect against sarcoma S180 and requires further investigation as an anticancer drug.
采用分光光度法、量热法和电泳法研究了含银卟啉ag -中四(4- n -羟乙基吡啶基)卟啉(AgTOEPyP4)作为一种潜在的抗癌药物。这些研究是在健康、癌症诱导和AgTOEPyP4治疗的小白鼠身上进行的。从小鼠的肝脏和肿瘤组织中分离DNA。研究了不同化学计量浓度的Mn2+离子存在下的熔化曲线。肿瘤中DNA - mn2 +相互作用的特点不同于正常情况,这是由于肿瘤DNA的二级结构存在缺陷,表现为DNA的DNA熔化特性。结果表明,从荷瘤小鼠组织中分离的DNA的熔化参数、焓和电泳迁移率与健康DNA不同。结果表明,经AgTOEPyP4处理的小鼠肝脏和肿瘤中分离的DNA的所有研究参数均接近正常值。结果表明,AgTOEPyP4卟啉对S180肉瘤具有明显的治疗作用,作为一种抗癌药物有待进一步研究。
{"title":"ANTICANCER EFFECT OF AgTOEPyP4 PORPHYRIN","authors":"N. Karapetyan, G. Ananyan, S. Haroutiunian","doi":"10.46991/pysu:b/2023.57.1.041","DOIUrl":"https://doi.org/10.46991/pysu:b/2023.57.1.041","url":null,"abstract":"The silver-containing porphyrin Ag-meso-tetra(4-N-hydroxyethylpyridyl)porphyrin (AgTOEPyP4) was investigated as a potential anticancer drug using spectrophotometric, calorimetric and electrophoretic measurements. The studies were conducted on healthy, cancer-induced, and treated by AgTOEPyP4 white mice. DNA was isolated from the liver and tumor tissues of mice. Melting curves were studied in the presence of various stoichiometric concentrations of Mn2+ ions. The character of the DNA–Mn2+ interaction in the tumor differs from that in the norm due to defects in the secondary structure of tumor DNA, which is expressed in the DNA melting characteristics of DNA. It was revealed that the melting parameters, enthalpy, and electrophoretic mobility of DNA isolated from the tumor-bearing mice tissues differed from healthy DNA. It was shown that all studied parameters of the DNA isolated from the liver and tumor treated by AgTOEPyP4 mice approached the norm. The obtained results revealed that AgTOEPyP4 porphyrin has a pronounced therapeutic effect against sarcoma S180 and requires further investigation as an anticancer drug.","PeriodicalId":20692,"journal":{"name":"Proceedings of the YSU B: Chemical and Biological Sciences","volume":"19 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78071141","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
ANTIMICROBIAL ACTIVITY OF ETHANOL EXTRACTS OF $RIBES~NIGRUM$ AND $RIBES~RUBRUM$ LEAVES 荆芥叶和荆芥叶乙醇提取物的抑菌活性研究
Pub Date : 2023-03-27 DOI: 10.46991/pysu:b/2023.57.1.054
Anush M. Babayan, N. Sahakyan
Antimicrobial activity of Ribes nigrum L. and Ribes rubrum L. leaf extracts was determined by disk-diffusion method as well as specific growth rate and generation succeeding factor determination. Different Gram-positive (Bacillus subtilis WT-A, Staphylococcus aureus MDC 5233, Enterococcus hirae ATCC 9790) and Gram-negative (Escherichia coli ATCC 25922, Salmonella typhimurium MDC1754, ampicillin resistant E. coli dhpα-pUC18 and kanamycin resistant E. coli pARG25) bacteria and yeasts (Saccharomyces cerevisiae ATCC 9804 and S. cerevisiae ATCC 13007) were used as test-microorganisms. 1,1-diphenyl-2-picrylhydrazyl (DPPH) assay was applied to measure the radical scavenging capacity of extracts obtained from Ribes spp. R. rubrum and R. nigrum extracts antiradical activity expressed with IC50 value of 91.2±1.69 µg‧mL–1 and 66.01±1.65 µg‧mL–1, respectively. The total flavonoid content in plant extracts was determined employing AlCl3 colorimetric assay, and the values were 34.71±0.63 and 49.99±0.86 μg QE‧mg–1 for R. rubrum and R. nigrum extracts, respectively. Total phenolic content of studied extracts was investigated by Folin–Ciocalteu assay. The contents for R. rubrum and R. nigrum extracts were 133.12±6.65 and 167.15±7.29 μg GAE‧mg–1, respectively. Thus, these plants can be considered as potential sources of biologically active substances.
采用圆盘扩散法、比生长率法和代继承因子法测定了黑荆芥和红荆芥叶提取物的抑菌活性。以革兰氏阳性菌(枯草芽孢杆菌WT-A、金黄色葡萄球菌MDC 5233、霍乱肠球菌ATCC 9790)和革兰氏阴性菌(大肠杆菌ATCC 25922、鼠伤寒沙门氏菌MDC1754、耐氨青霉素大肠杆菌dhpα-pUC18和耐卡那霉素大肠杆菌pARG25)和酵母(酿酒酵母ATCC 9804和酿酒酵母ATCC 13007)作为试验微生物。采用1,1-二苯基-2-苦味酰肼(DPPH)法测定了红小檗和黑小檗提取物的自由基清除能力,IC50值分别为91.2±1.69µg·mL-1和66.01±1.65µg·mL-1。采用AlCl3比色法测定植物提取物中总黄酮的含量,结果表明,红小檗和黑小檗提取物的总黄酮含量分别为34.71±0.63和49.99±0.86 μg QE·mg-1。采用Folin-Ciocalteu法测定提取物中总酚的含量。红小檗和黑小檗提取物的含量分别为133.12±6.65和167.15±7.29 μg GAE·mg-1。因此,这些植物可以被认为是生物活性物质的潜在来源。
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引用次数: 0
ANALYSIS OF DOXORUBICIN-INDUCED MITOCHONDRIAL DNA DELETIONS IN HUMAN BLOOD LEUKOCYTES AND THP-1 CELL LINE BY PCR PCR分析阿霉素诱导的人血液白细胞和thp-1细胞系线粒体DNA缺失
Pub Date : 2023-03-27 DOI: 10.46991/pysu:b/2023.57.1.032
T. Harutyunyan
Doxorubicin (DOX) is an antineoplastic drug with potent cardiotoxic activity due to selective accumulation and disruption of mitochondrial functioning in cardiomyocytes. Accumulating evidence indicates that DOX can also induce genotoxic side effects in other cells. The mutagenic effects of DOX in human peripheral blood leukocytes and THP-1 leukemia cells were analyzed using PCR. It was revealed that DOX could induce deletions of different sizes and loci of mitogenomes of normal human leukocytes and THP-1 leukemic cells.
多柔比星(DOX)是一种抗肿瘤药物,由于心肌细胞线粒体功能的选择性积累和破坏,具有强大的心脏毒性活性。越来越多的证据表明,DOX也可以在其他细胞中诱导基因毒性副作用。采用PCR方法分析DOX对人外周血白细胞和THP-1白血病细胞的致突变作用。结果表明,DOX可诱导正常人白细胞和THP-1白血病细胞有丝分裂基因组出现不同大小和不同位点的缺失。
{"title":"ANALYSIS OF DOXORUBICIN-INDUCED MITOCHONDRIAL DNA DELETIONS IN HUMAN BLOOD LEUKOCYTES AND THP-1 CELL LINE BY PCR","authors":"T. Harutyunyan","doi":"10.46991/pysu:b/2023.57.1.032","DOIUrl":"https://doi.org/10.46991/pysu:b/2023.57.1.032","url":null,"abstract":"Doxorubicin (DOX) is an antineoplastic drug with potent cardiotoxic activity due to selective accumulation and disruption of mitochondrial functioning in cardiomyocytes. Accumulating evidence indicates that DOX can also induce genotoxic side effects in other cells. The mutagenic effects of DOX in human peripheral blood leukocytes and THP-1 leukemia cells were analyzed using PCR. It was revealed that DOX could induce deletions of different sizes and loci of mitogenomes of normal human leukocytes and THP-1 leukemic cells.","PeriodicalId":20692,"journal":{"name":"Proceedings of the YSU B: Chemical and Biological Sciences","volume":"16 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78007979","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
EFFECT OF EXTREMELY HIGH FREQUENCY ELECTROMAGNETIC IRRADIATION TREATMENT ON GERMINATION, GROWTH AND AMYLASE ACTIVITY OF WHEAT SEEDS 极高频电磁辐照处理对小麦种子萌发、生长及淀粉酶活性的影响
Pub Date : 2023-03-27 DOI: 10.46991/pysu:b/2023.57.1.019
G. Poghosyan, M. Mikaelyan, P. Vardevanyan
In this work, the effect of low-intensity (non-thermal, flux capacity 0.06 mW/cm2) electromagnetic irradiation (EMI) of extremely high frequency (EHF) (42.2 GHz and 50.3 GHz) as pre-sowing treatment on germination, early growth and α-amylase activity of wheat seeds (Triticum aestivum L.) has been studied. The measurements conducted during seed germination were the germination energy and germination power, germination index, shoot and root length, as well as fresh weight. The labo­ratory experiment followed a completely randomized design, with four treatments (control, 5 min – T5, 10 min – T10, and 15 min – T15) and three replications. It was shown that EHF EMI pre-sowing treatment at both used frequencies favored the germination and growth of wheat seeds, and results were more expressed at a frequency of 50.3 GHz – the resonant frequency of water. We found that EMI with 50.3 GHz for 10 min significantly improved germination energy (by 6.5%) and germination power (by 7.6%). At the same time, shoot high (by 11%), root length (by 12%) and fresh weight (15%) were enhanced significantly at seedling stage compared with the control. Furthermore, the measured activity of α-amylase reviled that EMI-treatment increased the enzyme activity more than 2-fold, thereby probably promoting wheat germination.
本文研究了超低频(42.2 GHz和50.3 GHz)低强度(非热,通量0.06 mW/cm2)电磁辐射(EMI)播前处理对小麦种子萌发、早期生长和α-淀粉酶活性的影响。在种子萌发过程中测定萌发能和萌发力、萌发指数、茎长和根长以及鲜重。实验室试验采用完全随机设计,设4个处理(对照、5 min - T5、10 min - T10和15 min - T15), 3个重复。结果表明,两种频率的EHF EMI播前处理均有利于小麦种子的萌发和生长,且在水的共振频率50.3 GHz处表现得更为明显。结果表明,50.3 GHz干扰10 min显著提高了种子萌发能(6.5%)和发芽力(7.6%)。苗期茎高(11%)、根长(12%)和鲜重(15%)均较对照显著提高。此外,α-淀粉酶活性的测定表明,emi处理使α-淀粉酶活性提高了2倍以上,从而可能促进了小麦的萌发。
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引用次数: 0
SYNTHESIS OF NEW DERIVATIVES OF 1,2,4-TRIAZOLES 1,2,4-三唑类新衍生物的合成
Pub Date : 2023-02-15 DOI: 10.46991/pysu:b/2023.57.1.008
T. Ghochikyan, M. A. Samvelyan
On the basis of 3,5-disubstituted dihydrofuran-2(3H)-ones, hydrazides of substituted γ-hydroxybutyric acids were synthesized, which were further converted into the corresponding thiosemicarbazides and 1,2,4-triazoles. The synthesized compounds have not been previously described in the literature, and they cannot be obtained by any other way.
在3,5-二取代二氢呋喃-2(3H)-的基础上,合成了取代γ-羟基丁酸的酰腙,并进一步转化为相应的硫代氨基脲和1,2,4-三唑。合成的化合物以前没有在文献中描述过,也不能通过任何其他方法获得。
{"title":"SYNTHESIS OF NEW DERIVATIVES OF 1,2,4-TRIAZOLES","authors":"T. Ghochikyan, M. A. Samvelyan","doi":"10.46991/pysu:b/2023.57.1.008","DOIUrl":"https://doi.org/10.46991/pysu:b/2023.57.1.008","url":null,"abstract":"On the basis of 3,5-disubstituted dihydrofuran-2(3H)-ones, hydrazides of substituted γ-hydroxybutyric acids were synthesized, which were further converted into the corresponding thiosemicarbazides and 1,2,4-triazoles. The synthesized compounds have not been previously described in the literature, and they cannot be obtained by any other way.","PeriodicalId":20692,"journal":{"name":"Proceedings of the YSU B: Chemical and Biological Sciences","volume":"15 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89631976","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
期刊
Proceedings of the YSU B: Chemical and Biological Sciences
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