scholarly journals Conifers: Species Diversity and Improvement Status in Kenya

2021 ◽  
Author(s):  
Joram M. E. Mbinga ◽  
Stephen F. Omondi ◽  
Alice A. Onyango
Keyword(s):  
Tree Breeding ◽  
Tree Improvement ◽  
Tree Cover ◽  
Conifer Species ◽  
Cupressus Lusitanica ◽  
Key Species ◽  
Wide Range ◽  
The Status ◽  
Increase Productivity ◽  
Growing Conditions

A wide range of exotic conifer species have been successfully introduced in Kenya since 1910 for the purpose of supplying wood, mainly for timber, pulp, and plywood industries. Among the conifers introduced, Cupressus lusitanica and Pinus patula have adapted well to local growing conditions and are now the key species widely planted in commercial plantations. The other conifer species are planted at secondary level or as ornamentals. In order to increase productivity, the key conifer species have been subjected to genetic improvement through selection, breeding, and hybridization. Results of tree improvement work on C. lusitanica and P. patula showed growth and productivity increase from 20 to 25 m3/ha/yr. for C. lusitanica and from 25 to 30 m3/ha/yr. for P. patula. Scaling up conifer plantations using the tree improvement technologies drawn for the two species is one of the strategies for closing the annual wood supply–demand deficit which is currently estimated at 10.3 million m3. It is also one of the strategies for achieving 10% tree cover which is currently at 7.2%. The strategy encompasses the application of principles of tree breeding, improved germplasm, silviculture, pests and disease control. This presentation is a review of the status of conifer species since their introduction in Kenya.

Reforestation of South Korea: The history and analysis of a unique case in forest tree improvement and forestry

1994 ◽  
Vol 70 (1) ◽  
pp. 58-64 ◽  
Author(s):  
K. H. Kim ◽  
L. Zsuffa
Keyword(s):  
South Korea ◽  
Korean War ◽  
Large Degree ◽  
Tree Breeding ◽  
Forest Tree ◽  
Tree Improvement ◽  
Tree Cover ◽  
Pinus Rigida ◽  
Environmental Consequences ◽  
The Korean War

Forests of South Korea were severely depleted during the wars and because of poor management in the intervening periods. By 1953, at the end of the Korean war, a significant portion of the forests was completely destroyed. Exposed land was denuded and urgent action was needed to re-establish tree cover in order to reduce erosion.This paper describes the special situation and task faced by the Korean Forest Service in reforestation of the country and securing of planting stock, to a large degree by introducing exotic species and hybrid varieties through the efforts of the Institute of Forest Genetics of Korea. Tree improvement strategies used, results, and environmental consequences of this unique effort as seen thirty years later also are discussed. Key words: South Korea, reforestation, monocultures, tree-breeding, Populus, Pinus rigida, Pinus rigida × P. taeda, P. densiflora, exotics, environmental consequences

PROSPECTS FOR THE USE OF REMOTE CROSS IN THE CITRUS CROPS SELECTION

1970 ◽  
pp. 46-49 ◽  
Author(s):  
R. V. Kulyan
Keyword(s):  
Complex Traits ◽  
Germplasm Collection ◽  
Early Maturity ◽  
Russian Research Institute ◽  
Citrus Germplasm ◽  
The Status ◽  
New Varieties ◽  
Primary Test ◽  
Growing Conditions ◽  
Positive Traits

The Russian Research Institute of Floriculture and Subtropical Crops has the citrus germplasm collection, in total over 150 genotypes of various origins including 30 wild and semi-wild relatives. As a result of controlled hybridization in 17 crossings combinations of with the participation of relatives of citrus plants, new 769 hybrid offspring were obtained, which combine the traits of both the maternal and paternal genotypes. Analyzing the populations, promising combinations were highlighted: C. reticulata × Fortunella margarita (47.1%); C. x natsudaidai × 3252 (42.1%) and C. reticulata × C. reticulata ‘Cleopatra’ (40.9%) to create the gene pool of distant hybrids. From the mentioned combinations of crossings the greatest percent of seedlings which phenotypes tend to cultivated varieties was received. This hybrid material is a valuable source for isolating forms that are resistant to extreme environmental factors. According to phenotypic characteristics, hybrids were divided into three categories: I – Cultural, II – Semi-wild and III – Wild. Of the first category, the largest number 87 prospective forms were selected, and can be of interest for further breeding. As a result of the study of interspecific hybrid seedlings, 137 promising forms have been identified, which are carriers the complex traits such as dwarfism, thornless, early maturity and increased winter hardiness. From this set 17 genotypes were selected, which received the status of an elite forms, which successfully pass the primary test, and will be also useful in further breeding work for creating sources with a complex of positive traits and on breeding new varieties of citrus crops resistant to growing conditions.

РУССКИЙ ЯЗЫК – ЯЗЫК ВЫСШЕГО ОБРАЗОВАНИЯ В КГМА

2020 ◽  
pp. 50-53
Author(s):  
Г. Кульбаева
Keyword(s):  
Russian Language ◽  
Educational Activity ◽  
Official Language ◽  
Main Motivation ◽  
Language Functioning ◽  
Teaching Language ◽  
Medical Academy ◽  
Wide Range ◽  
The Status ◽  
The Russian Language

Аннотация. В статье рассматривается вопрос о функционировании русского языка в образовательном пространстве КГМА. Большое место в работе занимает роль русского языка в учебной деятельности студентов-медиков. Мотивацией к изучению именно, русского языка являются следующие факторы: статус официального языка; возможность привлечь внимание широкого круга специалистов к своим исследованиям; понимание престижности русского языка. В статье нашли отражение различные формы работы по расширению сферы использования русского языка в медицинской академии. В работе уделено внимание и профильным учебным пособиям, разработанным автором статьи. Анализ некоторых заданий позволяет констатировать тот факт, что содержание пособии определено через компетенции, одной из которых является языковая. Ключевые слова:язык обучения, фундаментальные науки, соматические ФЕ, компетентностная основа, профессиональная направленность, жаргонная лексика. Аннотация. Макалада КММАнын билим берүү мейкиндеги орус тилин өздөштүү маселеси каралат. Орус тили студент-медиктердин окуу ишмердигинде чоң роль ойнойт. Расмий тил статусу, өз изилдөөлөрүнө көпчүлүк адистердин көңүлүн буруу мүмкүнчүлүгү, орус тилинин баркын түшүнүү, өзгөчөлөп билүүгө далил болуп эсептелет. Макалада медициналык академияда орус тили колдонуу чөйрөсүн кеңейтүү боюнча иштөөнү ар кандай формалары көрсөтүлгөн. Эмгекте макаланын автору иштеп чыккан адистик окуу колдонмолорго да көңул бурулган. Кээ бир тапшырмалардын анализи колдонмонун мазмуну компетенция, анын бирөөсү тил аркылуу аныкталганын факт катары көрсөтүүгө мүмкүндүк түзөт. Түйүндүү сөздөр: фундаменталдык илимдер, соматикалык фразеологизмдер, компетенттик негиз, профессионалдык багытталыш, жаргондук лексика. Summary. The article discusses the Russian language functioning in the of the KSMA’s educational space. Russian language plays a big role in the educational activity of the medical students. The main motivation of learning the Russian language has the following points: the status of the official language; the opportunity to attract the attention of a wide range of specialists to their research; understanding of the prestige of the Russian language. The article reflected various forms of work to expand the scope of the use of the Russian language at the medical academy. The work focuses on specialized textbooks developed by the author of the article. An analysis of some tasks allows us to state the fact that the content of the manual is determined through competencies, one of which is the language. Key words: teaching language, fundamental sciences, somatic phraseological unit, slang vocabulary.

Recycling and Reuse in the Roman Economy

2020 ◽  
Keyword(s):  
Building Materials ◽  
Computational Modelling ◽  
Late Antique ◽  
Roman Economy ◽  
Wide Range ◽  
The Status ◽  
Recent Developments ◽  
Methodological Approaches ◽  
First Time ◽  
Site Types

The recycling and reuse of materials and objects were extensive in the past, but have rarely been embedded into models of the economy; even more rarely has any attempt been made to assess the scale of these practices. Recent developments, including the use of large datasets, computational modelling, and high-resolution analytical chemistry, are increasingly offering the means to reconstruct recycling and reuse, and even to approach the thorny matter of quantification. Growing scholarly interest in the topic has also led to an increasing recognition of these practices from those employing more traditional methodological approaches, which are sometimes coupled with innovative archaeological theory. Thanks to these efforts, it has been possible for the first time in this volume to draw together archaeological case studies on the recycling and reuse of a wide range of materials, from papyri and textiles, to amphorae, metals and glass, building materials and statuary. Recycling and reuse occur at a range of site types, and often in contexts which cross-cut material categories, or move from one object category to another. The volume focuses principally on the Roman Imperial and late antique world, over a broad geographical span ranging from Britain to North Africa and the East Mediterranean. Last, but not least, the volume is unique in focusing upon these activities as a part of the status quo, and not just as a response to crisis.

scholarly journals Atmospheric Pressure Plasma Deposition of TiO2: A Review

Materials ◽  
2020 ◽  
Vol 13 (13) ◽  
pp. 2931
Author(s):  
Soumya Banerjee ◽  
Ek Adhikari ◽  
Pitambar Sapkota ◽  
Amal Sebastian ◽  
Sylwia Ptasinska
Keyword(s):  
Atmospheric Pressure ◽  
Gas Flow ◽  
Plasma Deposition ◽  
Atmospheric Pressure Plasma ◽  
Cost Savings ◽  
Historical Background ◽  
Pressure Plasma ◽  
Wide Range ◽  
The Status ◽  
Deposition Techniques

Atmospheric pressure plasma (APP) deposition techniques are useful today because of their simplicity and their time and cost savings, particularly for growth of oxide films. Among the oxide materials, titanium dioxide (TiO2) has a wide range of applications in electronics, solar cells, and photocatalysis, which has made it an extremely popular research topic for decades. Here, we provide an overview of non-thermal APP deposition techniques for TiO2 thin film, some historical background, and some very recent findings and developments. First, we define non-thermal plasma, and then we describe the advantages of APP deposition. In addition, we explain the importance of TiO2 and then describe briefly the three deposition techniques used to date. We also compare the structural, electronic, and optical properties of TiO2 films deposited by different APP methods. Lastly, we examine the status of current research related to the effects of such deposition parameters as plasma power, feed gas, bias voltage, gas flow rate, and substrate temperature on the deposition rate, crystal phase, and other film properties. The examples given cover the most common APP deposition techniques for TiO2 growth to understand their advantages for specific applications. In addition, we discuss the important challenges that APP deposition is facing in this rapidly growing field.

scholarly journals Key Challenges in the Status Analysis for the Sustainable Urban Mobility Plan in Podgorica, Montenegro

2021 ◽  
Vol 13 (3) ◽  
pp. 1037
Author(s):  
Radoje Vujadinović ◽  
Jelena Šaković Jovanović ◽  
Aljaž Plevnik ◽  
Luka Mladenovič ◽  
Tom Rye
Keyword(s):  
Traffic Accidents ◽  
Road Traffic ◽  
Motor Vehicles ◽  
Urban Mobility ◽  
Passenger Cars ◽  
Study Program ◽  
Wide Range ◽  
The Status ◽  
Sustainable Urban Mobility ◽  
Status Analysis

The paper presents the results of the application of a practical approach for collecting data, which provides a simple, cost efficient, and easily reproducible method that was applied to obtain the necessary data for the status analysis of the Sustainable Urban Mobility Plan (SUMP) for Podgorica, the capital of Montenegro. Important data for the estimation of the existing condition of the traffic system were collected through desk research from the appropriate institutions and organizations. Several surveys and focus group interviews were conducted, in which about 5000 residents of Podgorica participated. In addition to answering questions, residents made numerous suggestions, confirming the correctness of a participatory approach in the new traffic planning paradigm that provides the SUMP with crucial advantages. A manual cordon count of traffic on five bridges for the traffic of the motor vehicles, as well as on two pedestrian-only bridges, was performed by students from the study program Road Traffic, and there are plans to repeat this in the coming years in order to enable more reliable monitoring and evaluation of the obtained data. Contemporary quality management tools such as BYPAD and ParkPAD were also used to assess the status of cycling and parking policy, respectively. It is especially important to emphasize that Podgorica is the first city in the West Balkans, and the fourth city in Europe, in which the ParkPAD tool was applied. A wide range of negative phenomena and trends was identified, like a rapid increase in the number of registered vehicles, an increase in the motorization rate and the number of traffic accidents, increased non-compliance with traffic rules, excessive use of passenger cars and auto-taxi vehicles, insufficient use of unattractive public transport, walking and cycling, etc. Based on the data collected, key challenges in status analysis in Podgorica were identified, which the SUMP should try to overcome.

scholarly journals Teaching Critical Vocabulary to Filipino Heritage Language Learners

2021 ◽  
Vol 11 (6) ◽  
pp. 260
Author(s):  
Jayson Parba
Keyword(s):  
Language Development ◽  
Social Issues ◽  
Language Teaching ◽  
Language Teachers ◽  
World Language ◽  
Wide Range ◽  
Teachers And Students ◽  
The Status ◽  
Language Classrooms ◽  
L1 And L2

Engaging in critical dialogues in language classrooms that draw on critical pedagogical perspectives can be challenging for learners because of gaps in communicative resources in their L1 and L2. Since critically oriented classrooms involve discussing social issues, students are expected to deploy “literate talk” to engage in critiquing society and a wide range of texts. Although recent studies have explored teachers’ and students’ engagement with critical materials and critical dialogues, research that explores language development in critical language teaching remains a concern for language teachers. In this paper, I share my experience of fostering language development, specifically the overt teaching of critical vocabulary to students of (Tagalog-based) Filipino language at a university in Hawai’i. Through a discussion of racist stereotypes targeting Filipinos and the impacts of these discourses on students’ lived experiences, the notion of “critical vocabulary” emerges as an important tool for students to articulate the presence of and to dismantle oppressive structures of power, including everyday discourses supporting the status quo. This paper defines critical vocabulary and advances its theoretical and practical contribution to critical language teaching. It also includes students’ perspectives of their language development and ends with pedagogical implications for heritage/world language teachers around the world.

The Study of Hindu New Religious Movements

2011 ◽  
Vol 15 (2) ◽  
pp. 6-19
Author(s):  
Gene R. Thursby
Keyword(s):  
Transcendental Meditation ◽  
Social World ◽  
Religious Movements ◽  
New Religious Movements ◽  
Special Issue ◽  
Social Harmony ◽  
Wide Range ◽  
The World ◽  
The Status ◽  
Arya Samaj

The category of Hindu new religious movements is conventional and useful, but has imprecise boundaries. Scholars tend to include within it some groups that have claimed they are not Hindu (Arya Samaj, Ramakrishna Mission) or not religious (Transcendental Meditation). Within its wide range are world-affirming groups dedicated to transforming the physical and social world as well as world-transcending groups that find the status of the world doubtful and their purpose at another level or in another realm. The four articles in this special issue of Nova Religio on Hindu new religious movements represent several aspects of this category, and the potential for accommodation of basic differences, social harmony, and even world-transcendence.

SiC Semiconductor Applications - An Air Force Perspective

1996 ◽  
Vol 423 ◽  
Author(s):  
L. S. Rea
Keyword(s):  
Air Force ◽  
Device Performance ◽  
Full Potential ◽  
Materials Development ◽  
Device Development ◽  
Performance Requirements ◽  
Wide Range ◽  
The Status ◽  
Performance Results ◽  
High Temperature Electronic

AbstractThe Department of Defense (DoD) is investing in the development of Silicon Carbide (SiC) for a wide range of applications. Over the past year, SiC technology has demonstrated excellent device performance results for power devices, high temperature electronic devices and microwave devices. The materials growth and processing technology for SiC is now at a level of sufficient maturity to support substantial device development efforts. While there is still considerable materials and device research required for SiC to achieve it's full potential, the fundamental technology has been proven for several critical applications. A perspective on some Air Force device performance requirements will be presented. The status of SiC materials development, material limits to advances in device performance and issues relating to supporting technology will also be discussed.

Appreciating Rapid Technology Integration in Creating Value in Enterprises

2014 ◽  
Vol 12 (1) ◽  
pp. 53-75 ◽  
Author(s):  
Mambo G. Mupepi ◽  
Sylvia C. Mupepi
Keyword(s):  
Knowledge Creation ◽  
Significant Proportion ◽  
Social Economy ◽  
Primary Objective ◽  
Social Enterprises ◽  
Use Of Technology ◽  
Wide Range ◽  
The World ◽  
Skilled Personnel ◽  
Increase Productivity

The primary objective of this paper is about innovation within specific social organization which compacts with the division of labor, knowledge creation, and the use of technology such as e-enterprise in social economy aimed at improving productivity. A significant proportion of the world's economy is organized to make profits not only for investors but to sustain the employment of many disadvantaged people throughout the world. It includes cooperative organizations, foundations and many other social enterprises that provide a wide range of products and services across the globe and generate sustainable employment. Productivity tends to increase when the job is divided into manageable portions and then performed by adequately skilled personnel. In order to succeed in an environment in which other businesses fiercely compete along with social enterprises it is imperative to take into account innovative systems such as e-enterprise to leverage competition and increase productivity.

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