scholarly journals Some reproductive parameters of Tilia cordata Mill. in Saransk

2018 ◽  
Vol 7 (4) ◽  
pp. 69-74
Author(s):  
Marina Viktorovna Labutina ◽  
Tatiana Alexandrovna Maskaeva ◽  
Nina Dmitrievna Chegodaeva

This paper examines a possibility of certain woody plants species use to monitor the state of the environment in urban conditions. Similar studies have shown that it is possible to use both vegetative and reproductive organs of Scots pine and birch warty. The authors propose the following studied parameters: a number of flowers in the inflorescence, a weight of one flower, a morphological usefulness (fertility) of pollen and its size. The investigations were carried out on several sites of Saransk, which differed in the technogenic impact. Determination of the viability of small-leaved linden plantations in different conditions of Saransk has shown them to be relatively satisfactory, however, under the conditions of the most powerful man-made press, the trees are sufficiently weakened. In the conditions of the controlled area, the smallest number of flowers in the inflorescence and the minimum mass of one flower are noted. In relatively polluted conditions of the city, the number of flowers in the inflorescence and the mass of the flower increases by 1,3-1,6 times. The low coefficient of variation in these areas is due to the strict selection of the species for a particular feature in man-made conditions. The quality and size of the linden pollen depends on the degree of anthropogenic impact, which allows using them in complex monitoring of the urban environment.

2017 ◽  
Vol 7 (4) ◽  
pp. 51-55
Author(s):  
S. A. Abiev ◽  
S. A. Aipeisova ◽  
N. A. Utarbaeva

<p>The purpose of our work is to assess the health state of woody plants growing in different habitats of the city of Aktobe. We have studied the health state of arboreal and shrubby plants growing in various urban habitats; the survey was conducted during 2016-2017 by route-visual method. We performed the analysis of species diversity, abundance and density in urban area. The assessment of health state of the trees was made according to V.A. Alekseev. From your data and literature review we established that such species as Ulmus pinnato-ramosa, Acer negundo, Populus tremula, Populus nigra, and Syringa vulgaris have strong winter resistnce in the territory of Aktobe; we registered that only their apex buds and emds of the shoots were frozen in severe winters. The medium-resistant speices include Ulmus laevis and Acer platonoides. They are less plastic and suffer from late spring and early autumn frosts. The Amorpha fruticosa, Vitis vinifera, and Parthenocissus guinguefolia could be considered as the non-resistant species, since they usually freeze up to the snow cover line. The analysis of the vital state made it possible to assess the resistance to urban conditions of the majority of trees and shrubs registered in urban habitats of Aktobe. According to the preliminary data, the origin of the plant and its winter resistance are of main importance when introducing new species to urban area.</p>


Author(s):  
Ye.V. Markelova ◽  
◽  
N.K. Zulina ◽  
O.I. Tomina ◽  
◽  
...  

The article gives definitions to the concepts of "rehabilitation", "habilitation", "individual rehabilitation program", "technical means of rehabilitation". The statistical data on primary disability of children with cerebral palsy in the city of Khabarovsk for the period 2016–2020 are presented. The characteristics of a wheelchair with additional fixation for patients with cerebral palsy are given. The requirements for the provision of disabled people with technical means of rehabilitation (wheelchairs) are noted, the principles of selection and the tasks that must be solved when using them are indicated. The method of correct determination of the parameters of the wheelchair is presented to help doctors of medical organizations in the preparation of referral documents for medical and social examination


2019 ◽  
Vol 3 (1) ◽  
pp. 59-65
Author(s):  
Rini Sovia ◽  
Aulia Fitrul Hadi

SMAN 10 Padang is one of the leading schools in the city of Padang State School which has two majors, namely Science (Science Knowledge) and Social Sciences (Social Sciences). A distinctive feature of this school is one of the international standard pilot schools (RSBI) by implementing bilingual and accelerating classes. On average students lack understanding in the selection of majors according to their abilities. Many people fail in the way they have found. To facilitate the determination of majors, a Decision Making System (SPK) is needed to find criteria. In SPK there are several methods in searching criteria, which are usually used by SAW with MFED. Based on the research carried out, by comparing the two methods, the data are grouped into three criteria, namely the value of the Natural Sciences National Examination, Psychology tests, and Interests. The results of this study show about MFEP method take a high accuration between SAW. An accuration of SAW have 38.3 % and MFEP have 70.5%.


2020 ◽  
Vol 11 (1) ◽  
pp. 51-59
Author(s):  
Maria Martynova ◽  
Rida Sultanova ◽  
Georgiy Odintsov ◽  
Regina Sazgutdinova ◽  
Elvira Khanova

Tilia cordata Mill. is considered to be the main tree species resistant to urban conditions and it is widely used in the greening of cities. The aim of the study is to assess the patterns of growth and development of small-leaved linden plantations in the urban environment. The research is based on the method of sample areas where continuous enumeration survey has been carried out. The study of urban greening objects was conducted using the methods of landscape assessment and complete enumeration of trees in alley plantings. It was found that Tilia cordata Mill. grows in all districts and zones of the city of Ufa, occupying 34.4% of green areas. During this research it was found that artificially created alley plantings of Tilia cordata Mill. are more well-kept and have well-developed crowns which create a tree shade sometimes 8-10 meters wide (the average crown projection being 7 m). Since alley plantings have repeatedly been pruned, trees in this area are characterized by a large increase in diameter and strong height growth stagnation. Thus, when studying linden plantings of the same age, a sharp difference in the size and shape of trees was observed.


Author(s):  
Amrullah Amrullah

This research is based on the phenomenon in the field which shows that there is an influence of interest in learning on academic achievement and non-academic achievement for students at the Madrasah Aliyah (MA) of Samarinda City. This study aims to describe the influence of interest in learning on academic achievement and the effect of academic achievement on non-academic achievement for students at the Madrasah Aliyah (MA) in Samarinda city. The study population was all students of the madrasah aliyah (MA) in the city of Samarinda, totaling 2262 students. The sample was set at 663 students who sat in class XI. the determination of madrasas is determined through purposive sampling. While the selection of respondents was done using a multi-stage sampling technique which was set at 87 students (respondents). Data collection uses questionnaires, while data analysis techniques use multiple correlation analysis. The results showed that the influence of partial interest in learning contributed to a correlation of 6% with academic achievement. This means that the students of Aliyah Madrasah in Samarinda have a very strong interest in learning about academic achievement. The hypothesis which states the existence of a correlation that has significance between the influence of interest in learning and academic achievement is accepted the truth, as evidenced by the value of t count = 2.327 and the distribution table t = -3.3324. Because t counts ˃t table then H0 is rejected. At a significant level Sig.0,001 and α = 0,05 were obtained. Because α = 0.05˃ Sig. = 0.001, then H0 is rejected and the effect of partial interest in learning has a correlation of 12.1% with non-academic achievements. This means that students of the Aliyah Madrasah in Samarinda have a good or very strong interest in learning about non-academic achievements. The hypothesis which states the existence of a correlation that is significant between the influence of interest in learning and non-academic achievement is accepted, as evidenced by the value of t count = 34.20 and the distribution table t = -3.3324. Because t counts ˃t table then H0 is rejected. At a significant level Sig.0,001 and α = 0,05 were obtained. Because α = 0.05˃ Sig. = 0.001, then H0 is rejected.


2021 ◽  
Vol 11 (3) ◽  
pp. 204-215
Author(s):  
Jose Manuel Palomino Ojeda ◽  
Stefano Rosario Bocanegra ◽  
Lenin Quiñones Huatangari

The objective of the work is to estimate the compressive strength of concrete by means of the application of Artificial Neural Networks (ANNs). A database is created with design variables of mixtures of 175, 210, and 280 kgf/cm², which are collected from certified laboratories of soil mechanics and concrete of the city of Jaen. In addition, Weka software is used for the selection of the variables and Matlab software is used for the learning, training, and validation stages of ANNs. Five ANNs are proposed to estimate the compressive strength of concrete at 7th, 14th, and 28th day. The results show that the networks obtain the average error of 4.69% and are composed of an input layer with eleven neurons, two hidden layers with nine neurons each, and the compressive strength of concrete as the output. This method is effective and valid for estimating the compressive strength of concrete as a non-destructive alternative for quality control in the construction industry.


2017 ◽  
Vol 7 (4) ◽  
pp. 374-381
Author(s):  
Maryam Karimiyan Bostani ◽  
Fateme Hashemzehi ◽  
Mahmood Reza Anvari

In the recent century, the excessive and unplanned growth of urbanism and inattention to the proper and correct selection of locations for roadside uses, especially roadside services, have led to the appearance of problems such as lack of spaces for service centers, inappropriate access, and other problems. The strategic location of the city of Zahedan among other cities of Sistan and Baluchistan Province and its connection to the national corridors requires development and growth of transportation industry and improvement of its performance. Some of the utmost important centers that have to be established for this purpose on the roadsides in the required quantities are roadside service and welfare centers. Therefore, in order to maintain and promote the security of the roads in the country, the establishment of such centers requires studies, evaluations and eventually, determination of appropriate and secure locations. In this study, considering the necessity of establishing service and welfare centers on the Zahedan to Khash Road, first, the existing centers were evaluated from the perspectives of passengers, then, by the use of site selection systems, some locations were determined in the high traffic parts of this road. The research methodology in this study is descriptive-analytical which is used in order to analyze the collected data. The research findings show that according to the passengers, the conditions of roadside services on the Zahedan to Khash Road and the existing infrastructures are weak. However, they are satisfied with social and security-related factors. The passengers also stated that these roadside service centers have created job opportunities in the region. They also have been effective in providing security of the roads.


2016 ◽  
Vol 60 (4) ◽  
pp. 51-57
Author(s):  
D. Urbanová ◽  
M. Halán

Abstract The aim of this study was to obtain new knowledge and show the possibility of the use of ultrasonographic (USG) examinations in reptilian medicine. As reptiles are patients brought to veterinary clinic in smaller numbers, we focused on the indications and limits of this type of examination in individual groups of reptiles. In the period of 2014—2015 we examined by ultrasound, 28 reptiles with the aim to diagnose gravidity, reproductive problems and to determine their gender. At the same time we examined the internal organs and their availability for potential USG examinations. We also investigated: the issues related to fixation and positioning of the patients; selection of suitable examination probes; and the ways of their application to a suitable body area. The experimental part of our study was focused on the examination of the reproductive apparatus of reptiles. We monitored: individual phases of gravidity in selected reptilian species; evaluated development of follicles in ovaries; and the development of eggs after successful mating up to their laying. We described the pathological states of reproductive organs and the suitability of this examination for the determination of gender.


2019 ◽  
Vol 4 (2) ◽  
Author(s):  
Raka Maulana ◽  
Yulianti Pratama ◽  
Lina Apriyanti

<p>Some areas in the city of Bandung is an area that dilitasi by the flow of the river, to prevent the introduction of garbage into the river basin is necessary to note the waste management systems in residential areas along the river. Cidurian river has a length of 24.86 Km along the river flow. Consists of the city of Bandung and Bandung regency. Administrative regions Cidurian River past eight (8) districts, from the region in the District Kiaracondong precisely Village Babakan Babakan Sari and Surabaya populous and the most densely populated. Thus, there should be community-based waste management in the form of a reduction in resources to prevent potential entry of waste into the river basin. Planning waste reduction will be divided into two, namely the reduction of inorganic waste with waste bank then the reduction of organic waste with absorption holes biopori, and bio reactor mini determination of the reduction is determined by the results of the analysis of the sampling covers the composition and garbage, then the result of the measurement characteristics test and analysis results questionnaire.</p>


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