scholarly journals Assessment of growth and productivity of Scots pine provenance tests in the Arkhangelsk region in 39-year

Author(s):  
А.В. Чупров ◽  
Е.Н. Наквасина ◽  
Н.А. Прожерина

Впервые для региона изучены выживаемость, рост и продуктивность климатипов сосны обыкновенной в 39-летних географических культурах государственной сети (Плесецкий район Архангельской области). Прослежены особенности перераспределения климатипов в коллекции, отобраны лучшие потомства для использования для лесовосстановления в пределах региона испытания. Установлено, что северные потомства (северная и средняя подзоны тайги), отличающиеся в I классе возраста высокой приживаемостью, во II классе возраста начали процесс дифференциации, который привел к снижению показателя почти в два раза. К концу II класса возраста наблюдается выравнивание потомств климатипов по высоте, при сохранении различий, связанных с происхождением, по диаметру. Наиболее крупные диаметры стволов имеют южнотаежные потомства, а также из северной подзоны смешанных лесов, отличающиеся самыми низкими показатели приживаемости и качеством стволов. Установлена прямая зависимость показателя Н/Д с приживаемостью, связанная с усилением роста климатипов по диаметру, увеличением сбежистости и искривленности стволов, формированием низкоопущенных крон. Показано, что в культурах II класса возраста сохраняются значительные корреляционные связи показателей роста и приживаемости с географическими координатами и климатическими характеристиками мест исходных насаждений, в то время как с запасом связь теряется. С использованием подхода оценки в единицах стандартного отклонения отобраны лучшие по продуктивности (запасу) климатипы: местный плесецкий, пинежский, вологодский, а также климатипы из Карелии. Исходные насаждения этих потомств входят в ареал, ограниченный 60–65° с.ш., 36–44° в.д. Для использования в лесовосстановлении в Архангельской области следует полностью исключить использование семян из насаждений Урала и Сибири. На европейской части страны рекомендовать к использованию семена, заготовленные в трех лесосеменных районах: Южнокарельский, Двинско-Мезенский и Верхнедвинский, ограничив перемещение семян на расстояние не более 300 км. For the first time for the region, the survival, growth and productivity of scots pine climates in 39-year-old provenance test of the state network (Plesetsk district of the Arkhangelsk region) were studied. Features of climate redistribution in the collection were traced, the best offspring were selected for use for reforestation within the test region. It has been established that northern offspring (northern and middle subzones of the boreal forest), differing in the I grade of age with high livability, in the II grade of age began the process of differentiation, which led to a decrease in the indicator by almost half. By the end of grade II of age, the offspring of provenance are equalized in height, while maintaining differences related to origin in diameter. The largest diameters of trunks have southern offspring, as well as from the northern subzone of mixed forests, which differ in the lowest rates of survival and quality of trunks. Direct dependence of H/D index with livability is established, which is connected with increase of provenance growth by diameter, increase of escape and curvature of trunks, formation of low-lowered crowns. It has been shown that in cultures of the II class of age, significant correlation of growth and livelihood indicators with the geographical coordinates and climatic characteristics of the places of the initial plantations remains, while with the reserve the connection is lost. Using the assessment approach, in units of standard deviation, the best climates in terms of productivity (reserve) were selected: local mold, Pinezhsky, Vologda, as well as climates from Karelia. The initial plantations of these offspring are included in the range, limited to 60–65° N, 36–44° E. For use in reforestation in the Arkhangelsk region, the use of seeds from plantations of the Urals and Siberia should be completely excluded. In the European part of the country, recommend the use of seeds harvested in three forested areas: South Karelian, Dvinsk-Mezensky and Verkhnedvinsky, limiting the movement of seeds for a distance of not more than 300 km.

2015 ◽  
Vol 22 (2) ◽  
pp. 97-102
Author(s):  
Малыхина ◽  
I. Malykhina ◽  
Шумилович ◽  
B. Shumilovich ◽  
Воробьева ◽  
...  

Class II cavities on Black is the most common widespread pathology of dental hard tissues. Due to the limited visual inspection diagnosis of these cavities is often difficult. For this reason, considerable difficulties arise when fillings. The most common errors of standard methods of sealing - the hanging edge of the composite, or the presence of gaps in incomplete filling in around the gingival area of the tooth.Clinical observations do not allow an adequate assessment of the quality of sealing and marginal adaptation of the composite immediately after treatment. This requires laboratory monitoring, the results of which would help to develop an optimal strategy and methodology of restoration of such cavities. The article presents the research results of the marginal integrity of composite at the sealing contact surfaces of chewing teeth. Laboratory studies were conducted using scanning electron microscopy and the fluorescent spec-tro-colorimetry of enamel. Standard restoration techniques do not provide reliable sealing of the enamel on aproximatly the surface of carious cavity, which was confirmed by clinical observations. For the first time, the developed authors´ technique of sealing the П class according to Black self-adhering flowable composite Vertise Flow according to clinical and laboratory methods of research provides qualitative edge adhesion and adhesion of the composite.


2021 ◽  
Vol 1 (43) ◽  
pp. 5-5
Author(s):  
Alexander Saakian ◽  
◽  

Urban forested areas play an important role in maintaining a high quality of life in an urbanized society. They are assigned the main function in smoothing out negative factors of production and creating a favorable environmental environment. The growth and development of woody plants in urban environments often differs significantly from natural conditions. This factor is particularly acute in the work of the assimilation apparatus. The study of the content of pigments (chlorophylls a, b and carotenoids) in the annual conifer of scots pine (Pinus sylvestris L.) was determined in extracts using spectrophotometric analysis. As a result of the study, experimental data were obtained on changes in the pigment system in the coniferous pine needles with an increase in the level of contamination. The analysis of photosynthetic features of scots pine (Pinus sylvestris L.) in the studied forest park zones in the city of Yelets with a complex index of atmospheric pollution at the level of "low", showed minor differences in the sum Keywords: SCOTS PINE, CHLOROPHYLLS, CAROTENOIDS, INDUSTRIAL POLLUTION, LIPETSK REGION


2020 ◽  
Vol 5 (2) ◽  
pp. 463-478
Author(s):  
Elizabeth Crais ◽  
Melody Harrison Savage

Purpose The shortage of doctor of philosophy (PhD)–level applicants to fill academic and research positions in communication sciences and disorders (CSD) programs calls for a detailed examination of current CSD PhD educational practices and the generation of creative solutions. The intended purposes of the article are to encourage CSD faculty to examine their own PhD program practices and consider the perspectives of recent CSD PhD graduates in determining the need for possible modifications. Method The article describes the results of a survey of 240 CSD PhD graduates and their perceptions of the challenges and facilitators to completing a PhD degree; the quality of their preparation in research, teaching, and job readiness; and ways to improve PhD education. Results Two primary themes emerged from the data highlighting the need for “matchmaking.” The first time point of needed matchmaking is prior to entry among students, mentors, and expectations as well as between aspects of the program that can lead to students' success and graduation. The second important matchmaking need is between the actual PhD preparation and the realities of the graduates' career expectations, and those placed on graduates by their employers. Conclusions Within both themes, graduate's perspectives and suggestions to help guide future doctoral preparation are highlighted. The graduates' recommendations could be used by CSD PhD program faculty to enhance the quality of their program and the likelihood of student success and completion. Supplemental Material https://doi.org/10.23641/asha.11991480


Author(s):  
Mohamad Hossein Pourhanifeh ◽  
Kazem Abbaszadeh-Goudarzi ◽  
Mohammad Goodarzi ◽  
Sara G.M. Piccirillo ◽  
Alimohammad Shafiee ◽  
...  

: Melanoma is the most life-threatening and aggressive class of skin malignancies. The incidence of melanoma has steadily increased. Metastatic melanoma is greatly resistant to standard anti-melanomatreatments such as chemotherapy, and 5-year survival rate of cases with melanoma who have metastatic form of disease is less than 10%. The contributing role of apoptosis, angiogenesis and autophagy in the pathophysiology of melanoma has been previously demonstrated. Thus, it is extremely urgent to search for complementary therapeutic approachesthat couldenhance the quality of life of subjects and reduce treatment resistance and adverse effects. Resveratrol, known as a polyphenol component present in grapes and some plants, has anti-cancer properties due to its function as an apoptosis inducer in tumor cells, and anti-angiogenic agent to prevent metastasis. However, more clinical trials should be conducted to prove resveratrol efficacy. : Herein, for first time, we summarize current knowledge of anti-cancerous activities of resveratrol in melanoma.


2021 ◽  
Vol 21 (1) ◽  
Author(s):  
Domenico Cuda ◽  
Sara Ghiselli ◽  
Alessandra Murri

Abstract Background Prevalence of hearing loss increases with age. Its estimated prevalence is 40–50 % in people over 75 years of age. Recent studies agree that declinein hearing threshold contribute to deterioration in sociality, sensitivity, cognition, and quality of life for elderly subjects. The aim of the study presented in this paper is to verify whether or not rehabilitation using first time applied Hearing Aids (HA) in a cohort of old people with hearing impairment improves both speech perception in a noisy environment over time and the overall health-related quality of life. Methods The monocentric, prospective, repeated measurements, single-subject, clinical observational study is to recruit 100 older adults, first-time HA recipients (≥ 65 years).The evaluation protocol is designed to analyze changes in specific measurement tools a year after the first HA usage in comparison with the evaluation before HA fitting. Evaluations will consist of multiparametric details collected through self-report questionnaires completed by the recipients and a series of commonly used audiometric measures and geriatric assessment tools. The primary indicator of changes in speech perception in noise to be used is the Italian version of Oldenburg Satz (OLSA) test whereas the indicator of changes in overall quality of life will be the Assessment of Quality of Life (AQoL) and Hearing Handicap Inventory for the Elderly (HHIE) questionnaires. The Montreal Cognitive Assessment (MoCA) will help in screening the cognitive state of the subjects. Discussion The protocol is designed to make use of measurement tools that have already been applied to the hearing-impaired population in order to compare the effects of HA rehabilitation in the older adults immediately before first HA usage (Pre) and after 1 year of experience (Post). This broad approach will lead to a greater understanding of how useful hearing influences the quality of life in older individuals, and therefore improves potentials for healthy aging. The data is to be analyzed by using an intrasubject endpoint comparison. Outcomes will be described and analyzed in detail. Trial registration This research was retrospectively registered underno. NCT04333043at ClinicalTrials.gov (http://www.clinicaltrials.gov/) on the 26 March 2020. This research has been registered with the Ethics Committee of the Area Vasta Emilia Nord under number 104, date of approval 17/07/2017.


Cancers ◽  
2021 ◽  
Vol 13 (6) ◽  
pp. 1387
Author(s):  
Radouane El Ayachy ◽  
Roger Sun ◽  
Kanta Ka ◽  
Adrien Laville ◽  
Anne-Sophie Duhamel ◽  
...  

Purpose: Lip carcinoma represents one of the most common types of head and neck cancer. Brachytherapy is a highly effective therapeutic option for all stages of lip cancers. We report our experience of pulsed dose rate brachytherapy (PDR) as treatment of lip carcinoma. Methods and Materials: this retrospective single center study included all consecutive patients treated for a lip PDR brachytherapy in our institution from 2010 to 2019. The toxicities and outcomes of the patients were reported, and a retrospective quality of life assessment was conducted by phone interviews (FACT H&N). Results: From October 2010 to December 2019, 38 patients were treated in our institution for a lip carcinoma by PDR brachytherapy. The median age was 73, and the majority of patients presented T1-T2 tumors (79%). The median total dose was 70.14 Gy (range: 60–85 Gy). With a mean follow-up of 35.4 months, two patients (5.6%) presented local failure, and seven patients (19%) had lymph node progression. The Kaplan–Meier estimated probability of local failure was 7.2% (95% CI: 0.84–1) at two and four years. All patients encountered radiomucitis grade II or higher. The rate of late toxicities was low: three patients (8.3%) had grade II fibrosis, and one patient had grade II chronic pain. All patients would highly recommend the treatment. The median FACT H&N total score was 127 out of 148, and the median FACT H&N Trial Outcome Index was 84. Conclusions: This study confirms that an excellent local control rate is achieved with PDR brachytherapy as treatment of lip carcinoma, with very limited late side effects and satisfactory functional outcomes. A multimodal approach should help to improve regional control.


1995 ◽  
Vol 12 (1) ◽  
pp. 37-39 ◽  
Author(s):  
Simon J Taylor

AbstractObjective: In recent years a number of articles have highlighted deficiencies in drinking histories taken by junior doctors. This study examines whether standards have improved as a result. It also examines for the first time: 1. the quality of drinking histories taken from patients following parasuicide; and 2. the quality of illicit drug usage histories.Method: An audit of case notes was undertaken of 114 patients admitted to a district hospital's acute psychiatric wards or assessed following overdose. Two periods were considered; one preceding many of the articles, and the second four years later.Results: There was an overall improvement from 58% of histories in 1988 having no mention of alcohol usage to 25% in 1992. (X2MH=10.57, p<0.01). There was, however, insufficient improvement of quantitative histories to reach statistical significance. Histories taken as part of an overdose assessment were not significantly different from those taken for inpatient admission. In 1992, 27% of patients had any illicit drug usage history recorded which represented a statistically significant improvement (X2MH=5.91, p<0.02) compared with four years earlier.Conclusions: Although improvements have been noted, alcohol and drug histories remain inadequate.


2021 ◽  
pp. 003072702110242
Author(s):  
Max Rünzel ◽  
Paolo Sarfatti ◽  
Svetlana Negroustoueva

When evaluating Quality of Science (QoS) in the context of development initiatives, it is essential to define adequate criteria. The objective of this perspective paper is to show how altmetric and bibliometric indicators have been used to support the evaluation of QoS in the 2020 Review of the Phase 2-CGIAR Research Programs (CRPs, 2017–2022), where, for the first time, the Quality of Research for Development (QoR4D) frame of reference has been utilized across the entire CGIAR CRP portfolio. Overall, the CRP review showed a significant output of scientific publications during the period 2017–2020, with 4,872 articles, 220,101 references, and 7.1 citations per article. Additionally, wider interest in scientific publications is demonstrated by good to high altmetrics, with average attention scores ranging from 70.8 to 806.9 with an average of 425.1. The use of selected bibliometrics was shown to be an adequate tool, for use together with other qualitative indicators to evaluate the QoS in the 12 CRPs. The CRP review process clearly demonstrated that standardized, harmonized and consistent data on research output is paramount to provide high-quality quantitative instruments and should be a priority throughout the transition toward One CGIAR. Therefore, we conclude that the QoR4D framework should be augmented by standardized bibliometric indicators embedded in measurement frameworks within the new One CGIAR. Finally, its practical utilization in monitoring and evaluation should be supported with clear guidelines.


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