Protection and Utilization of Soil Seed Bank in Road Construction

2012 ◽  
Vol 594-597 ◽  
pp. 1429-1434
Author(s):  
Guo Zhan Luo ◽  
Jian Wang ◽  
Jin Sheng Fu

The importance of protection and utilization of the topsoil as the soil seed bank in road construction and vegetation recovery has not attracted enough attention. Through analysis of topsoil protection and utilization as well as current situation of road vegetation recovery, it is proposed that using the local topsoil resources which containing richful seed bank for road vegetation recovery is very effective. And it is the technical reference for the road vegetation recovery.

2008 ◽  
Vol 11 (3) ◽  
pp. 355-364 ◽  
Author(s):  
Udayani R. Weerasinghe ◽  
Shimizu Akiko ◽  
Jayasekara Palitha ◽  
Takatsuki Seiki

2012 ◽  
Vol 433-440 ◽  
pp. 1945-1949 ◽  
Author(s):  
Yan Mei Yang ◽  
Shi Qiang Wei

Many kinds of construction wastes are now produced in China. Recycling disposal of construction wastes not only alleviate pressure on the environment but also identify certain economic and social benefits. This paper undertakes a timely review of recycling disposal of construction waste in China's Road Construction Industry. The paper presented definitions of construction wastes and described the current situation of construction wastes in China. Considering the research findings which have been achieved in the field of waste disposal, this paper discussed the approaches to recycle construction wastes in China including abandoned concrete, waste asphalt, old brick, waste timber, sewage sludge. The conclusion makes recommendations that are deemed to offer substantial benefits for both the road construction industry and society as a whole.


2009 ◽  
Vol 1 (1) ◽  
pp. 29-36
Author(s):  
Samson Olajide OKE ◽  
Olaniran Temitope OLADIPO ◽  
Charlottee Chibuzor NDIRIBE ◽  
Damilare Stephen AKINYEMI ◽  
Olubukola Modupe OJO

The soil seedbank of Tithonia diversifolia, an invasive species which dominates open waste fallowland vegetation was studied. Two different roadside sites which vary in extent of open waste land were selected.The species composition of the established vegetation was assessed in the two diferent sites. Twenty top soil samples were collected at five different distances (15 cm, 30 cm, 45 cm, 60 cm, and 75 cm) inwards away from each main road in dry and rainy seasons and the seed bank composition was determined by greenhouse germination over a 6 month period. The similarity between the composition of the seed bank flora and that of the established vegetation was low. The least and the highest emerged seedlings density was recorded in the 15 metres and 75 metres respectively inwards away from the main road in both seasons. The results of the seedlings emergence is a reflection of the extent of open waste land dominated by the invasive species due to human disturbance (road construction) on both sites. Overall results suggest that the emergence of the species from the soil seed bank may be due to the impact of the invasive species Tithonia diversifolia on other plant species in the study environment.


2011 ◽  
pp. 19-33
Author(s):  
A. Oleinik

The article deals with the issues of political and economic power as well as their constellation on the market. The theory of public choice and the theory of public contract are confronted with an approach centered on the power triad. If structured in the power triad, interactions among states representatives, businesses with structural advantages and businesses without structural advantages allow capturing administrative rents. The political power of the ruling elites coexists with economic power of certain members of the business community. The situation in the oil and gas industry, the retail trade and the road construction and operation industry in Russia illustrates key moments in the proposed analysis.


Author(s):  
Л.Н. Крячко

Постановка задачи. Изучение предмета «Иностранный язык» в техническом университете предполагает усвоение обучающимися терминологической лексики в соответствии с выбранной специальностью. Опыт преподавания показывает, что студенты испытывают трудности, связанные с запоминанием терминологических единиц и употреблением их в речи. Использование на занятиях по иностранному языку приема обучения терминологической лексике посредством опоры на внутреннюю форму данных лексических единиц позволяет оптимизировать процесс усвоения обучающимися специальных терминов. Результаты. Проведенное исследование дает основание утверждать, что анализ внутренней формы образованных семантическим способом англоязычных терминов специальности «Автомобильные дороги» позволяет выявить деривационно-ассоциативную связь терминологических единиц с лексикой общенационального языка, послужившей основой для вторичной номинации. Данные лексические единицы в большинстве случаев представляют собой хорошо знакомые студентам слова, обозначающие части тела человека и объекты, находящиеся в его близком окружении : одежду, посуду, инструменты, явления природы, представителей животного мира и т.д. Выводы. Ознакомление студентов дорожно-строительной специальности с внутренней формой изучаемых англоязычных терминов, выявление ассоциативных связей терминологических единиц со знакомыми студентам и широкоупотребительными словами общенационального языка, а также выполнение в аудитории специально разработанных тренировочных упражнений помогают снять трудности усвоения обучающимися терминологической лексики и облегчают ее запоминание. Statement of the problem. The study of the “Foreign Language” subject at a technical university involves students’ learning the terminology in accordance with the chosen specialty. The teaching practice shows that students experience the difficulties associated with memorising terminological units and using them in the speech. Applying the method of teaching the terminology based on the internal form of these lexical units at foreign language classes makes it possible to optimise the process of learning special terms by students. Results. The research that has been carried out gives reason to argue that the analysis of the internal form of the English “Automobile roads” specialty terms created in the semantic way makes it possible to reveal the derivational and associative relations of the terminological units with the national language words which served as the basis for the secondary nomination. In most cases, these lexical units are the words that are well known by the students and indicate the parts of man’s body and the objects that are present in man’s immediate environment: clothing, dishes, tools, phenomena of the nature, representatives of the animal world, etc. Conclusion. Introducing the internal form of the studied English terms to the road construction specialty students, identifying the associative relations of the terminological units with the well known to the students and widely used words of the national language, fulfilling the specially developed training exercises in the classroom help the students to overcome the difficulties of learning the terminology and to facilitate its memorization.


2010 ◽  
Vol 26 (5) ◽  
pp. 714-719
Author(s):  
Ming LI ◽  
De-ming JIANG ◽  
Yong-ming LUO ◽  
Xiu-mei WANG ◽  
Bo LIU ◽  
...  

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