63 research outputs found
Histological-functional characteristic of vegetative organs of Mentha piperita L. in the conditions of the Zaporozhye region
Робота присвячена гістолого-функціональній характеристиці вегетативних органів Mentha piperita в умовах Запорізької області. Наведено відсоткове співвідношення тканих вегетативних органів (листка, стебла, кореня), визначена екологічна група Mentha piperita в залежності від волог
Досвід вирощування, заготівлі та використання рослинного матеріалу малопоширених сільськогосподарських культур в аранжуванні
The authored works, including dry plant material, are recently becoming increasingly popular. Artistic compositions made of preserved plants do not require special care, and in combination with interesting materials look bright and spectacular and preserve the natural beauty of plants for a long time. Modern preservation technology of the arrangement material allows ensuring its high quality; therefore it is as beautiful and original as live flowers. During the study the authors applied special and general research techniques, laboratory and phytodynamics in particular. We have revealed that that fruits (inflorescences) of rare agricultural crops have high decorative character and can be used as dry (preserved) vegetative material in volumetric and semispecific varieties of compositions as a forming, main and secondary material. These are such plants as ordinary cotton, bamia, kenaf, cannate, safflower dipping and thistle spotted. It is advisable to use a natural way of bulk preservation for them, i.e. drying in the field. In addition, the benefits of this plant material are its originality, accessibility, ease of cultivation and storage duration. It can be used in the learning process to get skills for creating tracks for students. The results of visual perennial observations showed a high drought tolerance of these plants in the conditions of the Agrobiological complex of Bogdan Khmelnitsky Melitopol State Pedagogical University. The investigated plants without noticeable damage can withstand prolonged periods of drought, which are characteristic for the Southern steppe and do not require special conditions of cultivation. Thus, on the basis of the given data, we believe that the study of the decorative qualities of some types of rare crops, the characteristics of cultivation and evaluation of compositional use are the basis for their application in decorative floristics and the expansion of the plant range that can be used to make compositions throughout the year.Встановлено, що малопоширені сільськогосподарські культури можна використовувати як сухий (консервований) рослинний матеріал в об'ємному та напівоб'ємному різновидах композицій. Це такі рослини, як: бавовник звичайний, бамія, кенаф, канатник, сафлор красильний та розторопша плямиста. Результати візуальних багаторічних спостережень показали високу посухостійкість цих рослин в умовах Агробіологічного комплексу МДПУ ім. Б. Хмельницького. Досліджувані рослини без помітних пошкоджень витримують затяжні періоди посухи, які характерні для Південного Степу та не потребують особливих умов вирощування. Окремо для кожної культури визначено особливості заготівлі аранжувального матеріалу – термін збирання, консервування та умови зберігання. З'ясовано, що плоди або суцвіття цих рослин мають декоративні властивості, їх можна використовувати в композиціях як формоутворювальний основний рослинний матеріал та як матеріал-наповнювач. Для них доцільно використовувати природний спосіб об'ємного консервування – сушіння в польових умовах на колекційній ділянці. Окрім цього, перевагами цього рослинного матеріалу є його оригінальність, доступність, простота вирощування та тривалість зберігання. Оскільки ці рослини можна вважати перспективними для декоративної флористики, їх доцільно не тільки впроваджувати в навчальний процес під час вивчення дисциплін "Основи аранжування" та "Фітодизайн", але й включати в перелік рекомендованих рослин для аранжування у професійній літературі
Applying plant disturbance indicators to reveal the hemeroby of soil macrofauna species
Hemeroby is an integrated indicator for measuring human impacts on environmental systems. Hemeroby has a complex nature and a variety of mechanisms to affect ecosystems. Hemeroby is often used to assess disturbances in different vegetation types but this con-cept has seldom been evaluated for animals. The role of the hemeroby gradient in structuring the soil macrofauna community was inves-tigated. The experimental polygon was located in Botanical Garden of the Oles Honchar Dnipro National University (Dnipro City, Ukraine). There were 20 sites within the polygon. On each of them at 105 points samples of soil macrofauna were taken, soil penetration resistance, electrical conductivity of soil, depth of litter, height of grasses were measured. Within each site, a description of the vegetation cover was made. Based on the description of the vegetation, an indication of the level of ecosystem hemeroby within the polygons was conducted. In total, 48,457 invertebrate (Annelida, Arthropoda, and Mollusca) individuals of 6 classes, 13 orders, 50 families and 83 species or parataxonomic units were recorded. Phytoindication reveals that the level of hemeroby within the studied polygons varies from 34.9 to 67.2. The model V and VI from the HOFJO-list were the most optimal model of the species response to hemeroby gra-dient. The weighted average factor value was used to assess the optimal factor level for the species in a symmetrical bell-shaped re-sponse model. The optimal factor level of the hemeroby for the soil macrofauna species ranges from 34.9 to 66.0. Species also differ in degree of specialization to the factor of hemeroby. There was a regular change in the soil macrofauna community size and diversity in the hemeroby gradient. The limiting influence of anthropogenic transformation of the environment on the abundance of soil macrofauna community is clearly marked at the level of hemeroby above average. Species diversity of the community is greatest at moderate heme-roby level. Both relatively little transformed habitats and strongly transformed ones are characterized by lower species richness of the soil macrofauna community. The Shannon index shows a clear upward trend with increasing hemeroby. The Pielou index indicates that the main reason for this trend is an increase in community evenness with increasing hemeroby. The intermediate disturbance hypothesis was fully supported with respect to species richness. For the number of species, there is indeed a certain level of heterogeneity at which the number of species is highest. For another aspect of diversity, evenness, this pattern is not true. The evenness increases with increas-ing habitat disturbance. This result is due to a decrease in the abundance of dominant species. Keywords: diversity; urbanization; bioindication; canonical correspondance analysis; variation fractioning
Effects of alirocumab on types of myocardial infarction: insights from the ODYSSEY OUTCOMES trial
Aims The third Universal Definition of Myocardial Infarction (MI) Task Force classified MIs into five types: Type 1, spontaneous; Type 2, related to oxygen supply/demand imbalance; Type 3, fatal without ascertainment of cardiac biomarkers; Type 4, related to percutaneous coronary intervention; and Type 5, related to coronary artery bypass surgery. Low-density lipoprotein cholesterol (LDL-C) reduction with statins and proprotein convertase subtilisin–kexin Type 9 (PCSK9) inhibitors reduces risk of MI, but less is known about effects on types of MI. ODYSSEY OUTCOMES compared the PCSK9 inhibitor alirocumab with placebo in 18 924 patients with recent acute coronary syndrome (ACS) and elevated LDL-C (≥1.8 mmol/L) despite intensive statin therapy. In a pre-specified analysis, we assessed the effects of alirocumab on types of MI. Methods and results Median follow-up was 2.8 years. Myocardial infarction types were prospectively adjudicated and classified. Of 1860 total MIs, 1223 (65.8%) were adjudicated as Type 1, 386 (20.8%) as Type 2, and 244 (13.1%) as Type 4. Few events were Type 3 (n = 2) or Type 5 (n = 5). Alirocumab reduced first MIs [hazard ratio (HR) 0.85, 95% confidence interval (CI) 0.77–0.95; P = 0.003], with reductions in both Type 1 (HR 0.87, 95% CI 0.77–0.99; P = 0.032) and Type 2 (0.77, 0.61–0.97; P = 0.025), but not Type 4 MI. Conclusion After ACS, alirocumab added to intensive statin therapy favourably impacted on Type 1 and 2 MIs. The data indicate for the first time that a lipid-lowering therapy can attenuate the risk of Type 2 MI. Low-density lipoprotein cholesterol reduction below levels achievable with statins is an effective preventive strategy for both MI types.For complete list of authors see http://dx.doi.org/10.1093/eurheartj/ehz299</p
Effect of alirocumab on mortality after acute coronary syndromes. An analysis of the ODYSSEY OUTCOMES randomized clinical trial
Background: Previous trials of PCSK9 (proprotein convertase subtilisin-kexin type 9) inhibitors demonstrated reductions in major adverse cardiovascular events, but not death. We assessed the effects of alirocumab on death after index acute coronary syndrome. Methods: ODYSSEY OUTCOMES (Evaluation of Cardiovascular Outcomes After an Acute Coronary Syndrome During Treatment With Alirocumab) was a double-blind, randomized comparison of alirocumab or placebo in 18 924 patients who had an ACS 1 to 12 months previously and elevated atherogenic lipoproteins despite intensive statin therapy. Alirocumab dose was blindly titrated to target achieved low-density lipoprotein cholesterol (LDL-C) between 25 and 50 mg/dL. We examined the effects of treatment on all-cause death and its components, cardiovascular and noncardiovascular death, with log-rank testing. Joint semiparametric models tested associations between nonfatal cardiovascular events and cardiovascular or noncardiovascular death. Results: Median follow-up was 2.8 years. Death occurred in 334 (3.5%) and 392 (4.1%) patients, respectively, in the alirocumab and placebo groups (hazard ratio [HR], 0.85; 95% CI, 0.73 to 0.98; P=0.03, nominal P value). This resulted from nonsignificantly fewer cardiovascular (240 [2.5%] vs 271 [2.9%]; HR, 0.88; 95% CI, 0.74 to 1.05; P=0.15) and noncardiovascular (94 [1.0%] vs 121 [1.3%]; HR, 0.77; 95% CI, 0.59 to 1.01; P=0.06) deaths with alirocumab. In a prespecified analysis of 8242 patients eligible for ≥3 years follow-up, alirocumab reduced death (HR, 0.78; 95% CI, 0.65 to 0.94; P=0.01). Patients with nonfatal cardiovascular events were at increased risk for cardiovascular and noncardiovascular deaths (P<0.0001 for the associations). Alirocumab reduced total nonfatal cardiovascular events (P<0.001) and thereby may have attenuated the number of cardiovascular and noncardiovascular deaths. A post hoc analysis found that, compared to patients with lower LDL-C, patients with baseline LDL-C ≥100 mg/dL (2.59 mmol/L) had a greater absolute risk of death and a larger mortality benefit from alirocumab (HR, 0.71; 95% CI, 0.56 to 0.90; Pinteraction=0.007). In the alirocumab group, all-cause death declined wit h achieved LDL-C at 4 months of treatment, to a level of approximately 30 mg/dL (adjusted P=0.017 for linear trend). Conclusions: Alirocumab added to intensive statin therapy has the potential to reduce death after acute coronary syndrome, particularly if treatment is maintained for ≥3 years, if baseline LDL-C is ≥100 mg/dL, or if achieved LDL-C is low. Clinical Trial Registration: URL: https://www.clinicaltrials.gov. Unique identifier: NCT01663402
Agricultural Academy
abstract Petrova, S., I. velcheva, l.Yurukova and M.Berova, 2014. Plantago lanceolata l. as a biomonitor of trace elements in an urban area. Bulg. J. Agric. Sci., to get real information on environmental pollution with trace elements (al, cd, cr, cu, Pb and Zn) and their mobility in urban ecosystems, Plantago lanceolata l. plants and soil samples were collected in May 2010. Sampling sites were selected in urban areas with different anthropogenic impact (Plovdiv, Bulgaria). Significantly, elevated concentrations of Cd, Cr and Al were registered in all samples. Differences between trace element concentrations in sampled phytomass led to evaluation of the urban gradient theory in the context of the city of Plovdiv. the results of the investigation revealed the main problems and unfavorable factors, which affected urban vegetation. automobile transport was found to be the major source of contamination, followed by the industry. the contribution of some additional factors as canyon-street effect, wind rose, climate and topography of the region towards forming the environmental state was discussed. the approach used in our study could be successfully applied as a model to explore possibilities of using other herbaceous plant species for biomonitoring of the urban environmental status
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