bluuebunny/crossref_metadata_2025_split huggingface dataset:
Features of Cadmium absorption by plants of spring barley
Authors: Kachmar N. , Foremna I. , Dydiv A. 
Published: April 2018

The paper present result of research on the intensity of the absorption of cadmium from the soil by plants barley. The object of the study were plant spring barley varieties Peas in various stages of development. Сadmium was added to the soil (dark-grey podzolic) as a CdCl2·2,5H2O in the concentration of 3, 15 and 30 mg Cd+2 per kg of the soil. Сadmium is one of the heavy metals which occur in the environment as a result of antropogenic activities. The best solution for maintaining non-contaminated soils and plants is to remove the sources of Cd in the environment. Given that that is essentially impossible at this time, further research needs to determine how soil and plant factors affect Cd availability on polluted soils. Of all non-essential heavy metals, Cadmium (Cd) is perhaps the metal that has attracted the most attention in soil science and plant nutrition due to its potential toxicity to humans, and also its relative mobility in the soil-plant system. The Cadmium is for plants completely unnecessary element. Of particular concern for humans are the high concentrations of Cd in grain. Established that the Cadmium content in barley amended as follows: underground faction > vegetative biomass fraction > generative fraction (control and on the variant of contamination of soil in a dose 3 mg Cd+2 per kg of the soil) and underground faction > generative fraction > vegetative biomass fraction (on the variants of experience 5 and 10 maximum possible concentration of Cd+2). Сadmium absorbed most intensive barley in the flowering stage. Cadmium is characterized by subzero migratory ability in theorgans of barley. Roots are the main accumulators of this heavy metal. Every stress conditions are signal for a plant to initiate in its cells a number of different biochemical processes (e.g. changes of cytoplasm pH, changes of electrostatic potential of cell membranes, flow of ions). It is set that getting a clean straw and clean grain ispossible only on the variants of experien-ce 1 maximum possible concentration of Cd+2 and on control. The effect of сadmium and other heavy metals on plants depends not only on its form, but also on the presence and concentration of other elements and substances, the plant species and its developmental stage are also important. Several soil conditions, such as the pH value, calcium level, content of organic substances, particulaly humus etc., are decisive for the exchangeable and water soluble, available сadmium for plants.
Production of geese at using unconventional additions in mixed fodder
Authors: Fialovych L. M. , Kyryliv Ia. I. , Paskevych H. A. 
Published: April 2018

The article provides the results of the researches concerning the efficiency of using dry apple pomaces with adding chelate Cuprum and Zink while growing geese. Experimentally was determined the effective level of these additives and researched their influence. It was theoretically and practically grounded the expediency of the use in the mixed fodders for the geese of unconventional forage additions and found out their influence on the indexes of the productivity of geese, content of carotenoids in goose yolks and intensity of goslings growth. Nutrition indicates that dry apple pomaces contain a large number of biologically active substances, in particular carotenoids, phospholipids, and a number of mineral elements, especially Cobalt and Iodine. In addition, in this case, the term «waste» is rather arbitrary. Apple pomaces which contain high amounts of ingredients should be taken as secondary material resources and use for fodder purposes. However, an increase level of raw cellulose of dry apple pomaces (27.79%) something restrains their addition to the content of mixed fodder for poultry in high doses. However, geese are able to reach the corresponding level of the productivity after high containing of cellulose. However, in an order to promote the ability of poultry to use effectively the nutritives of this plant feed, there was a necessity of application of chelates, that increase catalytic functions of the body. It is found that the usage of non-traditional feed additives provides the rise in the process of eggs laying by 18.9%, promote the rise of vitality of goslings and content of carotenoids in yolks by 16.8%. The usage of dry apple pomace which is the waste substances of apple juice production after further drying, in small doses up to 7% is the optimal balance of nutrients. It is also obvious that the micro elements in the form of chelates have got a chemically protected shape, and in such a way they keep increasing the biological availability of the metal. It contributes to maintaining of the content of micro elements in organs and tissues, thus improving the intensity of goslings by 10.33%.
Validación de una escala de perfeccionismo en niños peruanos
Authors: Ventura-León José , Jara-Avalos Stefani , Garcia-Pajuelo Carmen , Ortiz-Saenz Carlos 
Published: April 2018

Este artículo validó la Escala de Perfeccionismo Infantil (EPI) de Oros en una población infantil peruana. Se contó con la participación de 1084 niños con edades comprendidas entre los 7 y 12 años (M = 9.75; DE = 1.23) de siete instituciones educativas, privadas y públicas. El Análisis Factorial Exploratorio reveló una escala bidimensional oblicua (Reacción ante el fracaso y Autodemandas); no obstante, tres ítems tuvieron una carga < .30. El Análisis Factorial Confirmatorio corroboró la estructura bidimensional oblicua con la salvedad de errores correlacionados. La fiabilidad fue estimada mediante el coeficiente Omega (ω = .810). Se concluye que la EPI cuenta con evidencia de validez y fiabilidad de las puntuaciones.
Some remarks on tile effect of dynamic absorber
Authors: Dao Nguyen Van 
Published: April 2018

In order to limit the vibration of mass m2 (fig. 1) while the mass m1 is subject ted to a harmonic force Q0sinωt, the dynamic absorber can be used. In this case the system considered is of more than two degrees of freedom. The article presented dealer with some linear systems of this kind with various methods of attaching the dynamic absorbers. It seams that advantageous absorbers are those given in figures 2 and 3. Whereas two absorbers acting simultaneously as shown in figs 4, 5, 6 do not give more effectiveness.
A new displacement bound technique for rigid plastic continua subjected to strong dynamic loading at large deflections
Authors: The Vu Van , Tinh Tran Ba 
Published: April 2018

A new displacement bound technique, which is based on concept of admissible fields has been developed for rigid Plastic continua subjected to strong dynamic loading at large deflections, the lower hound obtained (2.11) depends on kinematic ally admissible displacement ui and kinematic ally admissible velocity ui* which must be chosen so that the condition (2.14) may be satiafidc. Parameter T* would be determinated by maximizing the right hand side of (2.11).
On the covergence of an iteration method for solving the boundary value problem in tile theory of elasto - platic deformation processes
Authors: Bich Dao Huy , Hop Nguyen Cong 
Published: April 2018

In this paper is proposed an iteration method, as the Iliousin' s method for solving the boundary value problem in the theory of elasto - plastic deformation processes. The convergence of this method, i. e. the existence and uniqueness of solution of the boundary value problem are also considered.
Rigid plastic plates at large deformations
Authors: The Vu Van 
Published: April 2018

The method developed in [8] is applied herein in order to obtain estimations of the load-deflection relationship of the hinge supported rectangular plates acted on by a uniformly distributed loading. The plate is made from rigid perfectly plastic material which yields according to the square yield condition and maximum normal yield condition. the plastic hinge line patterns shown in figs. 1. 2. are chosen. The obtained results are presented in figs. 4, 5, 6, 8.
Influence of Sintering Temperature on Low-field Spin-polarized Tunneling Magnetoresistance of La<sub>0.7</sub>Ca<sub>0.3</sub>MnO<sub>3</sub>
Authors: Phong Pham Thanh , Manh Do Hung , Hong Le Van , Phuc Nguyen Xuan , Khiem Nguyen Van , Hung Vu Van 
Published: April 2018

In this study we report the effect of sintering temperature on the low field magnetoresistance
(LFMR) of La0.7Ca0.3MnO3 manganite synthesized through sol-gel technique. The
La0.7Ca0.3MnO3 has been sintered at 600°C, 700°C, 800°C, 900°C and 1200°C. The crystallite
as well as particle size also show strong dependence on the sintering temperature. While
the ferromagnetic – paramagnetic (FM-PM) transition temperature remains almost constant,
the metal – insulation transition temperature drop gradual and the low field magnetoresistance
(LFMR) increase with a decrease in grain size. We have analyzed our data based on the spin –
polarized transport of conduction electrons at the grain boundaries.
Effect of some factors on the growth and regeneration of cell suspension of Ngoc Linh ginseng (Panax vietnamensis Ha et Grushv.)
Authors: Cương Lê Kim , Hoàng Nguyễn Hồng , Nhựt Dương Tấn 
Published: April 2018

Ngoc Linh ginseng also known as Vietnamese ginseng (Panax Vietnamensis Ha et Grushv.) is a perennial medicinal plant. This plant is extremely rare and belongs to the Araliaceae family. Scientists are focusing on studies of Ngoc Linh ginseng nowadays. In this research, the effects of 2,4-dichlorophenoxyacetic acid (2,4-D), a-naphthaleneacetic acid (NAA), indole-3-butyric acid (IBA), 6-benzylaminopurine (BA), Kinetin (KIN), mineral salt formulations and cultural conditions, pH, sucrose concentration, medium volume on cell suspension culture of Panax vietnamensis Ha et Grushv. were investigated. In addition, growth curves and the effect of several plant grow regulators including a-naphthaleneacetic acid (NAA), indole-3-butyric acid (IBA), 6-benzylaminopurine (BA) on the regeneration of Ngoc Linh ginseng‘s cell suspension were also presented in this study. After 28 days in culture, the results showed that the best growth of a cell suspension of Ngoc Linh ginseng were obtained on ½MS liquid medium supplemented with 1.5 mg/l NAA, 50 g/l sucrose and the most suitable pH was 6.3. The acceptable medium volume for cell suspension growth was 30 ml. The growth curve of Ngoc Linh ginseng’s cell suspension showed that it should be subcultured at the beginning of the stationary phase approximately the 14th-16th day of culture. Ngoc Linh ginseng’s cell suspension exhibited the strongest growth at this time. When Ngoc Linh ginseng’s cell suspension was transferred to fresh medium, somatic embryos were formed in MS medium supplemented with 3.0 mg/l NAA after 30 days culture. The results shown that the potential regeneration of cell suspension of Ngoc Linh ginseng is very high.
Enhancement of starch production in tobacco through transfer of the gene encoding bacterial ADP glucose pyrophosphorylase
Authors: Ngọc Lê Thu , Hưng Nguyễn Mậu , Hùng Đinh Văn , Hồng Nguyễn Thị Minh , Ngọc Phạm Bích , Hà Chu Hoàng 
Published: April 2018

Starch is the primary storage polysaccharide in plants. It not only plays a role as the most important nutritional component in the diet of humans and many animal species, but is also a raw material in the food processing industry or material industry. Therefore, a current research direction is the improvement of crops by increasing starch yields based on enhancing the activity of key enzymes involved in starch biosynthesis by genetic engineering. ADP-Glc pyrophosphorylase (AGPase) is an important regulatory enzyme for synthesis of glycogen in bacteria and starch in plants. In this paper, the 1.5 kb synthetic mutant of AGPopt gene derived from E. coli AGPase was inserted into the plant expression vector pBI121 under the control of 35S promoter. The efficiency of this construct was tested in transgenic Nicotiana tabacum. The integration of AGPopt into the plant genome was confirmed by PCR and Southern hybridization, and the expression of bacterial AGPase in transgenic lines was detected by Western hybridization. Interestingly, starch assays in 7 tobacco transgenic lines resulted in 5 lines displaying an increase in the levels of starch accumulated in the leaves, approximately 18%–56% higher than those of WT plants. These results indicate that the expression of AGPopt is one of effective strategies for enhanced starch production in plant.
Biological characterization of fungal endophytes isolated from agarwood tree Aquilaria crassna Pierre ex Lecomte
Authors: Chi Hoang Kim , Cuong Le Huu , Hang Tran Thi Nhu , Luyen Nguyen Dinh , Ha Tran Thi Hong , Huong Le Mai 
Published: April 2018

In recent years, a considerable number of studies on the role of microbes in agarwood production have been carried out in plants of the species Aquilaria. Based on the fact that there is a relationship between the microorganisms residing inside the plant and the agarwood formation, we isolated and characterized endophytic fungi associated with A. crassna samples collected from Southern Vietnam. Morphological identification and DNA barcoding analysis of the fungal endophytic isolates indicated that they were classified at least into three groups of diverse genera: Geotrichum, Fusarium and Colletotrichum belonging to families Dipodascaceae, Nectriaceae and Glomerellaceae, respectively. Noteworthy, Geotrichum candium strain SHTr1 isolated from a dark colored woody sample of agarwood was able to produce a fruity odor and exhibited a slight antimicrobial activity against the test bacterium Staphylococcus aureus. Another fungal isolate, Fusarium verticillioides SHTr3’s, showed a moderate antimicrobial activity against a test Gram positive bacteria Bacillus subtillis and S. aureus with MIC values at 50 μg.mL-1. At 200 μg.mL-1, the ethyl acetate extracts of fungal isolates F. verticillioides SHTr3 and Colletotrichum truncatum SHTrHc7 were found to have comparable scavenging abilities on DPPH-free radicals with 53.87 and 71.82%, respectively. The present results contribute to a depiction of a diverse fungal endophytic community in Vietnamese agarwood plant A. crassna and provide important information for further understanding of the role of endophytic fungi in agarwood formation and therapeutic applications of host plants in general.
Development of RB1 mutation detection method based on mRNA
Authors: Nhung Vũ Phương , Quỳnh Lê Thúy , Tôn Nguyễn Đăng , Xuân Nguyễn Thị , Hà Nguyễn Hải 
Published: April 2018

Retinoblastoma (Rb) is a malignant tumor of the retina, occurring usually in children before age five. The heritable form acounting for about 40% of Rb making genetic analysis of RB1 gene is a important part of disease management. In previous study, we have successfully employed a method of direct sequencing for RB1 mutation screening from genomic DNA. However, given the large size of this gene and no reported mutation hotspots, the testing can be costly and time consuming method. To overcome this problem, we have developed a method to detect mutation from RB1 mRNA. Total RNA was isolated from blood leukocytes of a healthy individual and a Rb patient, cDNA was subsequently synthesized using reverse-transcriptase PCR. Whole cDNA of RB1 was amplified using six specific primer pairs and sequenced by Sanger method. The PCR products from healthy individual were showed as six specific bands on the agarose gel and could be used as the standard pattern of the normally spilced transcripts. Those of PCR products were sequenced successfuly and data can be aligned with the reference sequence of RB1 cDNA on the Genebanhk to identify nucleotide variants. We also identified an upnormal splicing of RB1 gene in the Rb patient haboring a c. G1960>C mutation at the end of the exon 19 by amplification of the RB1 cDNA fragments. Hence using RB1 mRNA test can reveal not only the silent/pathogenic mutations in the coding region of RB1, but also mutations that affect the normal spilcing of RB1 mRNA. This method reduces cost and time, can be used as the first step of RB1 analysis in Rb patients.
Influence of zero gravity on germination, growth, development and phenotype variation in Impatiens balsamia
Authors: Nhựt Dương Tấn , Anh Nguyễn Thị Thùy , Tuấn Nguyễn Xuân , Nam Nguyễn Bá , Luận Vũ Quốc , Huy Nguyễn Phúc 
Published: April 2018

A general strategy for de novo breeding technique using zero gravity has been emerging in some countries with developed space systems including Russia, the United States of America, China and Japan. In 2011, the first Kibo-ABC programme - "Asian Seeds" - began. Seeds from plants collected in Vietnam, Indonesia, Malaysia, and Thailand including Impatiens balsamia, Antirrhinum majus, and Salvia splendens Ker-Gawl. seed collected by Tay Nguyen Institute for Scientific Research staff were transported to Kibo and then returned to the Earth after a few months. In the present study, germination, growth and development and phenotypic variation of the Impatiens balsamia “zero gravity seeds” were compared with seeds that were not transported into space. Five months after the sowing date, the results indicated that the germination rate of the zero gravity seeds were 2 times higher than the control (22.9% and 9%, respectively). There was no significant difference in some growth and development parameters including plant height, number of branches per plant, leaf diameter, stem diameter and chlorophyll content between the zero gravity seeds and the control. Interestingly, Impatiens balsamia zero gravity seeds derived plants bloomed 16 - 23 days earlier than the control. A few “zero gravity seed” seedlings, however, showed not only lower growth and development abilities than those of the control but also some phenotypic variations such as loss of apex, under-developed apex, unusually large leaf, loss of growth and development and axillary bud formation on internodes, or double petals. This result will be an important prerequisite for the study of plant breeding in space technology - a new way of breeding industry in Vietnam.
Isolation of a methane-oxydizing bacterium for the study on single cell protein production from methane
Authors: Thu Nguyễn Thị Hiếu , Hằng Đinh Thuý 
Published: April 2018

Single cell protein (SCP) can be produced from biomass of different types of microorganisms that have high protein content such as yeast, filamentous fungi, algae and bacteria. In comparison to animal and plant protein sources, this kind of protein has several advantages, namely high protein and nutrient contents, being produced in fermenters with the use of variety of organic wastes, independence in agriculture land or climate conditions. Methane oxidizing bacteria (MOB) are considered as good candidates for SCP production and have been intensively studied recently. In the present study, a MOB strain BG3 was isolated from wastewater of an anaerobic digester via enrichment and isolation procedures using methane as the only carbon and energy sources. Strain BG3 comprised of oval-shaped cells of 0,8-1´16 -1,8 μm in size, almost nonmotile. Based on comparative analyses of the 16S rDNA partial sequences, strain BG3 was identified as a member of the Methylomonas genus, the most closely related species was Methylomonas koyamae (97% homology). This was also confirmed by analyses of sequence of the pmoA gene, encoding for a-subunit in the methane-monooxygenase in the strain. Besides methane, strain BG3 also utilized methanol for the growth. It has been shown that methane-fed culture of strain BG3 could produce 68.69 g crude protein per 100 g CDW and the according methane to biomass conversion efficiency was 2,8 m3 methane×kg-1 dry biomassas. Owing the capability of utilization of methane, the second important greenhouse gas, for the production of protein source for animal feed, strain BG3 would have a great application potential in Vietnam. Strain BG3 was designated as Methylomonas sp. BG3 and its 16S rDNA and pmoA gene sequences were deposited at the GenBank with accession numbers of KJ081955 and KJ081956, respectively.
Courtgi (Gürcü) Bahr-i Sefid (L’egee) Vapur Kumpanyası, 1883-1911
Authors: ÜNVER Metin 
Published: April 2018

Courtgi Bahr-i Sefid Vapur Kumpanyası Osmanlı Devleti’nin son döneminde
sivrilmiş bir yerli sermaye ürünü olarak 1883-1911 yılları arasında faaliyet
göstermiştir. Kurucusunun milliyeti, yabancı kaynaklarda Osmanlı Devleti’nin
içinde geliştiği ekonomik ve siyasî ortamdan ziyade 19. yüzyılın sonlarına
doğru gelişen Yunan deniz taşımacılığı ve ticaret filosu tarihinin bir parçası
olarak değerlendirilmeye çalışılmasına sebebiyet vermiştir. Söz konusu
yaklaşım, tarihi gerçeklik açısından gözden geçirilmelidir. Bu çalışmada
Courtgi Vapur Kumpanyası Osmanlı Devleti’nin 19. yüzyılın sonunda deniz
taşımacılığı konusundaki ihtiyaçları ve Osmanlı tebaası bir sermaye sahibinin
bu ihtiyaçları iyi görerek, değerlendirmesi düzleminde ele alınacaktır.
Osmanlı Arşiv Belgelerine Göre Londra Konferansı (21 Şubat 1921-12 Mart 1921)
Authors: AKAN Erkin 
Published: April 2018

Bu çalışma, Osmanlı
Devleti ile İtilaf hükümetleri arasında, 10 Ağustos 1920’de imzalanmış olan Sevr
Barış Antlaşması’nın bazı maddelerinin yeniden düzenlenmesi için Londra’da 21
Şubat-12 Mart 1921 tarihleri arasında toplanmış olan Londra Konferansı
görüşmelerini Osmanlı Arşivi belgeleri üzerinden incelemeyi ve değerlendirmeyi
amaçlar. Sevr Barış Antlaşması, Osmanlı Devletini mali, iktisadi, askeri
alanlarda denetim altına alarak; onun, egemen bir devlet olmasına izin
vermeyen, aynı zamanda, devletin sınırlarını daraltan bir antlaşmadır. Sevr’in
imzasından kısa bir süre sonra, bu antlaşmanın uygulanmasının mümkün olmadığı
ortaya çıkmıştır. Sevr’in uygulanmayacağının ilk belirtisi, Büyük
Millet Meclisine bağlı orduların, Doğu Anadolu’da Ermenistan’a karşı başarı
gösterip Ermenistan ile Büyük Millet Meclisi Hükümetleri arasında 2/3 Aralık
1920’de Gümrü Antlaşması’nın imzalanmasıdır. İkinci belirti, Sevr’in
uygulanması için baskı aracı olarak kullanılan Yunan askeri hareketinin, 10
Ocak 1921’de I. İnönü Muharebesi ile durdurulmasıdır. İtilaf Devletleri, bu iki
gelişmeden sonra, Sevr’in bazı maddelerini düzenlemek için hem İstanbul
Hükümetini hem de Ankara Hükümetini Londra Konferansına davet etmiştir. Londra
Konferansı görüşmeleri 23 Şubat 1921-12 Mart 1921 tarihleri arasında yedi celse
yapılmıştır. Görüşmelerde İstanbul Hükümeti ile Ankara Hükümeti birlikte
hareket etmiştir. İstanbul Hükümeti temsilcisi Tevfik Paşa, ağırlıklı olarak
sözü Ankara Hükümeti temsilcisi Bekir Sami Bey’e bırakmıştır. Londra Konferansı
görüşmelerinde, Sevr’in, İzmir, Doğu Trakya, Ermenistan, Kürdistan ile ilgili
maddeleri görüşülmüştür. İtilaf Devletleri ekonomik ve mali konularla ilgili
maddelerin görüşülmesine yanaşmamışlardır. Konferans, Yunanistan’ın İzmir ve
Doğu Trakya’da uluslararası bir komisyonun inceleme yapmasını kabul etmemesi
nedeniyle bir sonuca varamamıştır. İtilaf Devletleri, Büyük Millet Meclisi
temsilcilerini bu konferansa çağırarak, Ankara Hükümetini diplomatik olarak
tanımışlardır.