bluuebunny/crossref_metadata_2025 huggingface dataset:
The effect of silver nanoparticles on the limitation of ethylene gas and hydrolytic enzymatic activity in micropropagation of rose (Rosa hybrida L. 'Baby love')
Authors: Ngan Ha Thi My , Tung Hoang Thanh , Nghiep Ngo Dai , Le Bui Van , Nhut Duong Tan
Published: November 2020

Micropropagation of rose (Rosa hybrida L. ‘Baby Love’) often encounter some abnormal phenomena such as yellow and abscission leaf, hyperhydricity, etc. These phenomena effect on the quality of shoots cultured in vitro as well as the survival rate of plantlets after transferred to greenhouse. This is due to the accumulation of ethylene in culture vessel, which leads to an increase in enzyme activity of cellulase and pectinase resulted in disrupting the cell wall binding and inducing organ abscission. In this study, the effect of silver nanoparticles (AgNPs) to overcome these abnormal phenomena as well as its effect on the growth and development of shoots and plantlets in rose cultured in vitro were evaluated. The results showed that after 6 weeks of shoot culture, the medium supplemented with 2 ppm AgNPs was the most suitable for in vitro shoot multiplication with the highest number of shoots/explant (6.67 shoots), shoot height (3.06 cm), fresh weight (451.00 mg), dry weight (58.33 mg), SPAD (32.28) and dry mass ratio(12.33%). Adding 3 ppm AgNPs into in vitro rooting medium may improve the growth and develop involve in plant height (3.06 cm), number of leaves (6.33), leaf length (1.50 cm), leaf width (1.50 cm), fresh weight (137.67 mg), dry weight (13.00 mg), number of roots (4.33), SPAD (39.37), dry mass ratio (9.40%) of rose plantlet after 4 weeks of culture. After treatment with AgNPs, the abnormal phenomena including ethylene gas accumulation (0.30 ppm), cellulase enzyme activity (0.14 UI/mL) and pectinase enzyme activity (0.40 UI/mL) was reduced compare with the other treatments and the control. In addition, the high survival rate (93.33%) of plantlets was also observed after 4 weeks transferred to greenhouse. On the other hand, the treatment with 5 ppm AgNPs also induced early rose in vitro flowering; however, when using AgNPs at high concentrations (7 ppm) inhibited growth, development, toxicity and even death of explants.
Labeling efficiency of Tb3+ conjugated CD133 monoclonal antibody nanocomplex targeting in vitro metastatic cancer cells
Authors: Nhat Minh Le , Trong Nhan Vo , Thu Huong Tran , Thi Nga Nguyen , Tri Vien Le , Thi Kim Hue Phung
Published: November 2020

Efficient cancer treatment remains a huge challenge worldwide. As reported by the World HealthOrganization, the number of cancer patients is estimated to be 24 million in 2035, which is a 70% increasecompared to 14.1 million in 2012. The severity of cancer is due to the presence of cancer stem cells (CSCs),which are directly related to drug resistance, metastasis, and tumor relapse. Because of the unknown location ofthe primary tumor and/or the residency of CSCs, standard therapies deliver a high dose of drugs to the whole body,which can have negative effects and deadly consequences for patients undergoing treatment. Therefore, efficientluminescent materials for labeling and tracking CSCs are urgently needed to determine their distribution andtarget treatment. Herein, a fluorescent Tb3+ nano-ion and CD133 monoclonal antibody (mAb) were conjugatedinto a nano probe-complex (ET2). Tb3+ nano-ion is a rare-earth element and the CD133 mAb targets CD133,which is a CSC surface marker. The Tb3+ nanorods were surface treated with silica and activated with -NH2 forfunctioning before being coupled with CD133 mAb. Strong fluorescent Tb3+ nanorods were used to decrease thetoxicity of high-dose medicines, and the purpose of the CD133 mAb was to increase the specific binding capacityof CSCs to the ET2 nanocomplex. The luminescent properties of this coupled ET2 complex were determinedand its ability to target and label CSCs was determined using the pluripotent human embryonic carcinoma cellline, NTERA-2. Fluorescence microscopy showed strong luminescent signals from ET2-exposed NTERA-2cells. It was also demonstrated that the ET2 nanocomplex effectively labeled up to 97.74% of the tested NTERA-2 cells, but only 2.35% of CCD-18Co human colon normal cells. Therefore, these results show that the ET2luminescent nanocomplex specifically targeted and labeled CSCs, and may be used for further applications infundamental and clinical research.
Prediction of cellulolytic and hemicellulolytic bacterial diversity in the gut of Coptotermes gestroi in the Southern Vietnam
Authors: Thi Thao Nguyen , Thi Huyen Do , Nam Hai Truong
Published: November 2020

In lower termite such as Coptotermes gestroi, cellulose and hemicellulose are hydrolysed by cellulases and hemicellulases secreted from bacteria, archaea, protozoa and fungy in the hindgut. In which, majority of the enzymes are contributed by protozoa. From the metagenomic DNA data (125,423 open reading frames -ORFs) of free-living bacteria in the gut of C. gestroi harvested in Southern Vietnam and by MEGA 4.0 software, 100.340 ORFs were classified into 1,368 species, 628 genera, 217 families, 97 orders, 41 classes and 22 phyla (Do et al., 2014). Among these, 2,131 ORFs (2,12%) belong to 24 bacterial species (account 1,75% bacterial species), 11 families, 9 orders, 8 classes and 5 phyla were predicted have ability to produce cellulases; 679 ORFs belong to 18 bacterial species 8 families, 6 orders, 5 classes, 4 phyla were predicted have ability to produce hemicellulase. Majority of cellulase producers were species which of Firmicutes (15/24 species), accumulated in class Clostridia, order Clostridiales. The most abundant cellulase producer was Pseudomonas fluorescens (1,258 ORFs) of order Pseudomonadaceae. Out of the 18 hemicellulase producers, the most abundant species was Clostridium thermocellum (113 ORFs) in the phylum Firmicutes, followed by 3 species belonging to the phylum Bacteroidetes. The species predicted to produce both cellulase, hemicellulase were C. thermocellum, Ruminococcusns flavefaciens and Bacillus subtilis. Our study provides  a data of gut cellulose and hemicellulose - degrading bacteria composition of C. gestroi
Somatic embryogenesis of Polyscias fruticosa L. Harms via culturing ex vitro leaf explant
Authors: Nha Tram To Thi , Yen Truong Phi , Anh Ton Trang , Tung Hoang Thanh , My Ngan Ha Thi , Tan Nhut Duong
Published: November 2020

Polyscisa fruticosa L. Harms is a medicinal plant containing alkaloids, glycosides, saponins, vitamins and phytosterols with many ginseng-like pharmacological effects such as strengthening fitness, increasing resistance and flexibility. However, the research on micropropagation on this plant is still limited. In this study, post-sterile leaf explants were used as initial culture material for the embryogenic- calli capable of producing somatic embryos (including morphology of somatic embryonic development stages), rooting and evaluation of acclimatization and growth at the greenhouse. The results showed that calli 0.5 cm gave optimum somatic embryos rate (75.53%) on MS medium supplemented with 100 mL/L of coconut water and 0.5 mg/L BA after 6 weeks of culture. The somatic embryo culture on MS medium added 0.1 mg/L Ki combined with 150 mL/L coconut water gave higher shoots regeneration rate (83.30%) and the number of shoots (6.30 shoots) than those cultured on other treatments after 8 weeks of culture. Besides, the in vitro plants were cultured on MS medium supplemented with 30 g/L sucrose and 100 mL/L coconut water for the highest number of roots (3.02 roots) and the ability to tame in the greenhouse (30 soil + 20 vermicomposts + 30 coconut husk + 20 husk ash) for high survival rate of 85.20%.
Effects of 6-dimethylaminopurine, cytochalasin B and cycloheximide on in vitro development of I pig cloned embryos
Authors: Van Nguyen Khanh , Huu Quan Xuan , Huong Vu Thi Thu , Lan Pham Doan
Published: November 2020

The present study was conducted to evaluate the effects of 6-dimethylaminopurine (6-DMAP), cytochalasin B (CyB) and cycloheximide (CHX) on in vitro development of “I” pig somatic cell nuclear transfer embryos. Oocytes after SCNT were activated with 2 mM 6-DMAP; 7.5 µg/ml CyB and 10 µg/ml CHX. The results indicated that the rate of oocytes no lysis in group activated by CHX was significantly lower compared with those in group activated by 6-DAMP and CyB (90.91% and 88.01%, respectively, P < 0,05). The blastocyst formation rate did not differ between group actvated by 6-DAMP and CyB (24.93% vs 24.4%, P > 0.05). Meanwhile the blastocyst formation rate in group activated by CHX was 15.01%, significantly lower than that in group activated by 6-DAMP and CyB (P < 0.05). The average number of cells in the blastocyst in group activated by 6-DAMP and CyB were higher than that in group activated by CHX (47.78, 44.57 vs 39.42, respectively). The use of 6-DMAP and CyB in the activation of pig oocytes after SCNT was more effective than CHX. The results of this study show that for the first time in Vietnam, we have created “I” pig SCNT embryo without zona pellucida with the rate of blastocyst formation from 15.01% to 24.93%.
Genetic variation of pharmacogenes
Authors: Phuong Nhung Vu , Dang Ton Nguyen , Van Hai Nong , Hai Ha Nguyen
Published: November 2020

Patient specific response against a particular drug could be affected by various factors, in which genetic factors are the most crucial contributor. The genetic variability in pharmacogenes might result in variable drug response of individuals, which in turn can lead to unexpected treatment outcomes or even adverse drug reactions. The pharmacogenes include of genes that encode for several proteins which divided into 3 main functional categories: drug metabolizing enzymes, drug transporters and receptor-drug targets. Genetic variants of genes coding for drug metabolizing enzymes phase I (CYP450), phase II (GSTs, UGT, TPMT) as well as drug transporters (ABC, SLCO) of numerous populations in global have been extensively studied. Among these, SNPs are the major contributor behind variants of pharmacogenes along with copy number variants. Furthermore, the clinical impact on drug response of common variants belonging to several important pharmacogenes has been well understood. On the other hand, information on the variant spectrum of genes encoding for receptor-drug targets as well as their physiological effects have remained limited. In recent years, along with computational methods, next generation sequencing technologies had been developed tremendously. These high throughput methods had greatly promoted the field of pharmacogenetic research through providing ability to detect novel and rare genetic variants. The data on genetic variants of pharmacogenes would be valuable for determining the responder and non-responder to medication during treatment. These are also significant basis which play a vital role in development of the field of optimizing drug dose for individuals and personalized medicine in the future.
Degradation of naphthalene and pyrene by several biofilm-forming photosynthesis purple bacterial strains
Authors: Thi Minh Nguyet Nguyen , Phuong Ha Hoang , Van Quyen Dong , Ngoc Huong Tra Nguyen , Nhi Cong Le Thi
Published: November 2020

Aromatic hydrocarbons such as naphthalene, pyrene are recalcitrant compounds found in oil contaminated areas including petroleum storage tanks, oil exploiting companies. These components are difficult to be degraded/transformed in the lack of oxygen conditions. Among anaerobic and micro-aerobic microorganisms, photosynthetic purple bacteria are the dominant group. Photosynthetic purple bacteria (PPB) are considered as aquatic organisms which are able to grow in anaerobic conditions by photosynthesis but without oxygen. This bacterial group has flexible metabolic types depending on living conditions, then they are widely distributed in nature. There are numerous publications on planktonic PPB which could use naphthalene and pyrene as carbon and energy sources. However, there is no publication on biofilm formed by PPB to degrade their aromatic compounds. In this research, 4 biofilm-forming PPB strains including DQ41, PY2, PY6 and DG12 were screened and estimated their pyrene and napthalene degradation capacity. These organisms demonstrated high biofilm forming ability. As biofilm types, their utilization efficiencies were upper 79% with the initial concentrations of naphthalene and pyrene of 200 and 250 ppm, respectively. These results may contribute to enlarge the number of biofilm-forming microorganisms to degrade/transform aromatic hydrocarbons in polluted area treatment in Vietnam.
Studies on effects of seed size on germination and seedling growth of Elaeocarpus and Canarium tree species
Authors: Tamadaddi Basavaraj L. , Prabhuling G.
Published: November 2020

An investigation was undertaken on two medicinally important evergreen tree species of Western Ghats namely, Elaeocarpus munronii and Canarium striuctum to improve seed germination and enhance seedling growth in nursery. The seeds collected from two randomly chosen trees in each species were used for the study. In general seed germination was very poor in both the species. The maximum germination of 4.66 per cent was observed in Elaeocarpus munronii and it was 13.33 per cent in Canarium striuctum. Though big and medium size seeds recorded higher germination per cent than small size seeds in both the species studied, the seed size effect on germination was found to be non-significant. The results of the study revealed that seed size did influence seedling growth in both the species. Seeds of bigger size produced seedlings with higher values of shoot length, root length and collar diameter but their effect on dry matter accumulation was not significant. The effect of seed treatments on seedling growth was not noticed in Elaeocarpus munronii while seed treatment with sulphuric acid in Canarium striuctum showed slight but significant increase in shoot length, however, other growth parameters remained unaffected. The effects of seed size as well as of seed treatment on germination and seedling growth was found to be similar in both the trees species studied.
Concept of soil organic carbon stock
Authors: Debbarma Kabir
Published: November 2020

Soil organic carbon (SOC) controls ecosystem and agro-ecosystem function, influencing soil fertility, water holding capacity and many other functions. The total amount of C stored in the surface soil is higher than sub surface soil area. It is estimated that the amount of C in the atmospheric pool is about 766 Pg C and about 566 Pg C in living vegetation. It is also of global importance because of its role in the global carbon cycle and therefore, the part it plays in the mitigation of atmospheric levels of greenhouse gases (GHGs). Different factors such as topography, climate, and soil physico-chemical properties also effect SOC stock in soil. Past long-term experimental studies have shown that soil organic C is highly sensitive to changes in land use, with changes from native ecosystems such as forest or grassland to agricultural systems almost always resulting in a loss of SOC. Land use change in different part of the world has also been observed to influence SOC stocks in different depth of the soil. Proper management of land use and land management practices and application of fertilizers, organic compost and manures could leads to greater C-storage in the soil, improves soil fertility and crop yield.
Study on mutagenic effectiveness and efficiency of mutagens in inducing chlorophyll mutations in m2 generation in sorghum [Sorghum bicolor (L.) Moench ]
Authors: Surashe S.M. , Kalpande H.V. , Borgaonkar S.B.
Published: November 2020

An investigation was carried out to create the variability generated through induced mutation in two sorghum populations viz., 296 B (Kharif) and Parbhani Moti (Rabi). Two mutagens viz., gamma irradiation (10 kR, 20kR, 30kR and 40kR) and EMS (0.1%EMS, 0.2%EMS, 0.3%EMS and 0.3%EMS) and their combination were used M2 generation. Mutagenic sensitivity in M2 generation on the basis of reduced germination and plant survival revealed a dose dependent reaction and differential response of the populations. In general, chlorophyll mutation frequency expressed on M2 seedling basis increased linearly with doses of three the mutagens in 296 B and Parbhani Moti. The frequency was more in 296 B followed by Parbhani Moti of three mutagens. The spectrum of chlorophyll mutations comprised albina, xantha, viridis, xanthaviridis, chlorina. The most frequently occurred mutant was viridis type followed by chlorina in all the populations. The population 296 B had expressed largest frequency of chlorophyll mutants followed by Parbhani Moti.
Management of wilt and dry root rot diseases of redgram [Cajanus cajan (L.) Millsp.] by using actinomycetes
Authors: Malathi S.
Published: November 2020

Actinomycetes were tested for their antagonistic activity against Fusarium udum and Macrophomina phaseolina under in vitro condition. Among the tested isolates of Actinomycetes AC (5) reported highest 82.85 per cent reduction of mycelial growth of Fusarium udum and 85.13 per cent reduction of mycelial growth of Macrophomina phaseolina. In the field experiment, five treatments were tested for the management of wilt and dry root rot disease, T3- ST+ SA with Actinomycetes (AC 5) significantly recorded 71.92 and 70.38 per cent reduction of the wilt and dry root rot diseases, respectively. These biocontrol agents were used an alternative to the chemical fungicide for controlling the wilt and dry root rot incidence and enhanced the plant growth parameters and there by increased yield in redgram.
Evaluating Plant Biodiversity in Natural and Semi‑Natural Areas with the Help of Aerial Drones
Authors: SÂNGEORZAN Dragomir D. , ROTAR Ioan
Published: November 2020

In the era of abundant information, wisdom has become a scarce resource. Exploration and measurement of biodiversity yield copious amounts of information fragmented into numerous categories and types, following the pattern of life itself. We aim to review the potential of charting the plant diversity of woodlands, grasslands, marshlands, and other natural and semi-natural areas relevant to conservation by using low-altitude, low-cost, Earth Observation technology, such as small aerial drones, that captures images which can be mapped and analyzed. As this technology is new and quickly evolving, we limited the search to published research between 2012-2019. We have found applications for forestry, agro-forestry, horticulture, grasslands, ecological restoration, and other areas. In terms of technological progress, new hardware components and cameras and new software tools leverage drones’ power to deliver a greater quantity and quality of information. There are promising efforts to develop low-cost drone technology that facilitate better biodiversity conservation results. For analysis, software tools are also improving to take advantage of increases in computing power and artificial intelligence programming. Our findings serve as an introduction to low-cost teledetection for biodiversity conservation, with drones providing an advantage in monitoring habitats by increasing information quantity, accuracy, and ease of analysis with the aid of automation.
Effects of Barley Yellow Dwarf Virus on Yield and Yield Components in Different Winter Wheat Genotypes
Authors: RACZ Ionuṭ , KADAR Rozalia , ṢOPTEREAN Laura , VARADY Adina , HIRIṢCĂU Diana , SUCIU Loredana
Published: November 2020

Barley Yellow Dwarf Virus is a Luteovirus disease that affects small grain yields. The climatic conditions of the agricultural year favoured the development of vectors, so that the virus attack caused significant damage on different genotypes. The first visible symptom includes plant stunting and yellowing and purpling, so that plant height was the first traits affected reducing with 24.58 to 44.33 % compared to the unaffected plants. Regarding the main yield components their performance or reduced with 37.89 % to 74.35 % for weight of spike, 33.66 to 87.70% for number of grains per spike and from 50.90 to 88.03 % in case of weight of grains per spike. Grain yield as a complex and most important feature that characterizes a genotype was affected between 49.05 to 87.76 % which suggest that the infection can have a different intensity depending on certain morpho-physiological traits.
Influence of Different Tillage Systems on Soybean Nodulation and Yield in the Transylvanian Plain Conditions
Authors: CHEŢAN Felicia
Published: November 2020

The paper presents the results of research conducted during 2018-2019, regarding the root nodules formation at soybean, by applying different tillage systems, under the conditions of the Agricultural Research and Development Station Turda situated in the Transylvanian Plain.The development of root nodules in soybean differs from one variety to another, the highest value of 103 nodules/plant is recorded in the Onix variety and lower in the Cristina and Felix variety with 66 and 69 nodules respectively. Also at the weight of the nodules/plant it seems to maintain the same trend, the Onix variety (0.86 g) being superior to the other two varieties (Felix 0.83 g, Cristina 0.80 g). The highest soybean average yield was registered at the Cristina variety cultivated in the minimum tillage-chisel (2548 kg/ha) and the lowest yield at the Felix variety in the no tillage (1592 kg/ha).
Applying Rational Envelope curves for skinning purposes
Authors: Kruppa Kinga
Published: November 2020

Special curves in the Minkowski space such as Minkowski Pythagorean hodograph curves play an important role in computer-aided geometric design, and their usages are thoroughly studied in recent years. Bizzarri et al. (2016) introduced the class of Rational Envelope (RE) curves, and an interpolation method for G1 Hermite data was presented, where the resulting RE curve yielded a rational boundary for the represented domain. We now propose a new application area for RE curves: skinning of a discrete set of input circles. We show that if we do not choose the Hermite data correctly for interpolation, then the resulting RE curves are not suitable for skinning. We introduce a novel approach so that the obtained envelope curves touch each circle at previously defined points of contact. Thus, we overcome those problematic scenarios in which the location of touching points would not be appropriate for skinning purposes. A significant advantage of our proposed method lies in the efficiency of trimming offsets of boundaries, which is highly beneficial in computer numerical control machining.
PSEUDO-MINIMALITY AND RULED SURFACES
Authors:   Tomsk State University (Tomsk, Russian Federation), BUKHTYAK Mikhail S.
Published: November 2020

This paper is a follow-up to the author's series of works about shape modeling for an orthotropic elastic material that takes an equilibrium form inside the area with the specified boundaries. V.M. Gryanik and V.I. Loman, based on thin shell equilibrium equations, solved about 30 years ago a similar problem for an isotropic mesh attached to rigid parabolic edges. With a view to extend modeling to orthotropic materials (and other boundary contours), the author in his publications of 2016–2017 proposed an approach to the problem based on the application of surfaces with a constant ratio of principal curvatures. These surfaces are called pseudo-minimal surfaces. A partial differential equation that defines (in the local sense) a class of pseudo-minimal surfaces is very complex for analysis. However, for some classes of surfaces, the analysis is greatly simplified, notably, the analysis can be performed without this inconvenient PDE, but with the method of moving frames. The author is referring to a class of ruled surfaces. This class is interesting not only due to the aforesaid but also due to an evident interest manifested by architects and builders. However, one should discuss not the pseudo-minimal ruled surfaces (they exist but are obviously trivial) but an invariant (principal curvatures ratio), which is not an identical constant on a given surface but its contour lines coincide with the lines of some invariant family. Roughly speaking, there are surfaces whose pseudo-minimal condition is satisfied identically, and surfaces that are pseudo-minimal "in a limited sense"—lengthways the lines of a certain family, internally connected with the surface. The article finds that the role of such a family can be obviously played by "equidistant" lines for the striction line of a skew ruled surface, and rays are the carriers of such a ruled surface, they form a regulus with constant Euclidean invariants.
INTEGRAL REPRESENTATION OF SOLUTIONS OF AN ORDINARY DIFFERENTIAL EQUATION AND THE LOEWNER– KUFAREV EQUATION
Authors:   Kalmyk State University (Elista, Russian Federation), ZADOROZHNAYA Olga V. , KOCHETKOV Vladimir K. ,   Kalmyk State University (Elista, Russian Federation)
Published: November 2020

The article presents a method of integral representation of solutions of ordinary differential equations and partial differential equations with a polynomial right-hand side part, which is an alternative to the construction of solutions of differential equations in the form of different series. The method is based on the introduction of additional analytical functions establishing the equation of connection between the introduced functions and the constituent components of the original differential equation. The implementation of the coupling equations contributes to the representation of solutions of the differential equation in the integral form, which allows solving some problems of mathematics and mathematical physics. The first part of the article describes the coupling equation for an ordinary differential equation of the first order with a special polynomial part of a higher order. Here, the integral representation of the solution of a differential equation with a second-order polynomial part is indicated in detail. In the second part of the paper, we consider the integral representation of the solution of a partial differential equation with the polynomial second-order part of the Loewner–Kufarev equation, which is an equation for univalent functions.
Parameters of Regional Media Discourse: Subject, Communicative Situation, Context Structure
Authors:   Buryat State University (Ulan-Ude, Russian Federation), Sibidanov Bair B.
Published: November 2020

The article examines the main characteristics of regional media discourse defined on the basis of Teun. A. van Dijk’s cognitive discourse theory. The article focuses on three aspects: the types of subjects of social action; features of the media text; and the context structure of regional media discourse. The author proposes to introduce a regulatory goal setting along with the cognitive one into the media discourse functioning model. This change influences the ultimate goal of media functioning. According to the author, apart from giving information, journalists and their articles have an important task of encouraging social action. Therefore, the article concentrates on the types of subjects of social action, but not on the types of authors of media texts. Subjects of social action are: institution, person, media, and society. All of them (except for society) can act both as authors and main characters in media texts. Society is the only subject of the media field that is symbolic. Its function is to give an ethical assessment of the content of the media message. Mass audience is characterised as generally passive, and it is not able to become the subject of media discourse. It leads to the fact that the opponent (interlocutor) of the author cannot take part in shaping the content and developing the dynamics of regional media discourse, like in oral discourse. The characters of the texts, i.e. subjects of social action, do it, depending on how the author presented them. As a result, the images of subjects become dramatic. Thus, the main communicative factor in shaping media discourse is the activity of the mass media and the authors. The text is an elementary unit of media discourse. The text takes up the functions of a communicative situation and can fill gaps: it can help reconstruct some characteristics of the simulated speech communication. The media text (in the intended role characteristics of the consumer) contains conditions for the consumption of the mass product. The importance of the context increases in the conditions when a typical situation becomes equal to the text of a media message. In accordance with regulatory goal setting, the structure of the media context is as follows: the event-related context layer is on the surface, the social is deeper and leads to the development of social change in the actions and the worldview of the consumer, and the cultural media context is the most profound and penetrating. All layers of the media context are closely intertwined and connected with each other.
Efeitos do treinamento muscular respiratório em pacientes após acidente vascular cerebral: uma revisão sistemática
Authors: Neto Fleury Ferreira , Nascimento Jedson dos Santos , De Jesus Ana Carla Cruz , Barauna Luiz , Ribeiro Nildo Manoel da Silva
Published: November 2020

INTRODUÇÃO: O Acidente Vascular Cerebral (AVC) é o resultado da interrupção aguda do suprimento sanguíneo ao cérebro por meio de entupimento ou rompimento dos vasos podendo provocar lesões celulares e alterações nas funções neurológicas. Essas alterações são relevantes para a ineficiência dos mecanismos orofaríngeos da deglutição, respiração, fonação e reflexos protetores das vias aéreas inferiores culminando em alta incidência de pneumonia por aspiração. O Treinamento Muscular Respiratório tem como função restabelecer a função muscular que esteja comprometida, treinar tanta a força quanto à endurance muscular, melhor a eficácia na desobstrução das vias aéreas, condicionar e adaptar ao exercício e prevenir a fadiga muscular respiratória. OBJETIVO: O objetivo desse estudo é sistematizar o efeito do treinamento muscular respiratório sobre os volumes e capacidades pulmonares em indivíduos que sofreram acidente vascular cerebral. MATERIAIS E MÉTODOS: Esta revisão sistemática foi realizada pela busca nas bases de dados BVS (Scielo, Lilacs, IBECS, Medline), PubMed e análise das referências. RESULTADOS: Um total de 4834 estudos foram rastreados e analisados, onde fizeram parte desta revisão 17 estudos publicados entre 2010 e 2019. CONCLUSÃO: Estudos comprovaram que o uso de TMR em pacientes pós-AVC gera efeitos positivos nos volumes e capacidades pulmonares, apesar de terem um tamanho amostral pequeno. A busca por criar novos estudos que possam auxiliar na prescrição e padronização dos treinamentos desses indivíduos em diversos ambientes deve ser um caminho a se pensar.
Prevalence and associated factors of low back pain in an urban Nigerian community
Authors: Ogunsanya Gbolade Isaac
Published: November 2020

INTRODUCTION: Low Back Pain (LBP) constitutes a public health problem as almost every individual is expected to experience LBP at least once during their lifetime. OBJECTIVE: This study is done to determine the prevalence of LBP and associated factors in an urban Nigerian community. METHODS AND MATERIALS: This cross-sectional household survey randomly selected 741 subjects using a 4-stage sampling technique. Data were obtained through a self-administered semi-structured questionnaire. Association between categorical variables and LBP was analyzed using the Chi-square test and multiple logistic regression model (?=0.05). RESULTS: Mean age of participants was 41.32 ± 15.24 years. The point, annual, and lifetime prevalence of LBP were 31.2%, 61.1%, and 70.6% respectively. Aged 40 years and above (p=0.006), being an artisan (p=0.005) or trader (p=0.007) compared to being an office worker (p=0.071), and continuously sitting more than 3 to 4 hours (p<0.001) are factors significantly associated with LBP. Others are transport duration to/from work more than or equal to 30 minutes (p<0.001), computer use (p<0.001), trauma history (p=0.045), never attending a health talk on back care (p<0.001), tobacco smoking history (p=0.006) and having an occasional (p=0.002) or no exercise routine (p<0.001). CONCLUSION: LBP is common among individuals in the study area with a point, annual, and lifetime prevalence of 31.2%, 61.1%, and 70.6% respectively. Interventions on LBP prevention should target correction of identified modifiable associated factors such as poor posture, physical inactivity and lack of information on LBP.
Atuação fisioterapêutica e qualidade de vida de pacientes com Traumatismo Raquimedular: uma revisão integrativa
Authors: Silva Francisco Valter Miranda , Silva Antonia Nathiara Janot , Castro Dágila Mayara Pimenta de , Ribeiro Raquel Pinto , Sales Thais de Oliveira , Nunes Paula Pessoa de Brito
Published: November 2020

INTRODUÇÃO: O traumatismo Raquimedular (TRM) é caracterizado por uma lesão na medula espinal, que gera alterações nas funções motoras e sensitivas. Diante destas alterações que comprometem as condições de saúde dos indivíduos acometidos, a fisioterapia atua na reabilitação desses pacientes. OBJETIVO: Revisar a literatura científica e analisar a atuação fisioterapêutica e a qualidade de vida dos pacientes acometidos por TRM. MÉTODOS: Trata-se de uma revisão integrativa da literatura com a busca de artigos nas bases de dados: Scientific Electronic Library Online (SciELO), Biblioteca Virtual em Saúde (BVS), Literatura Latino-americana e do Caribe (LILACS) e PubMed, com a utilização do cruzamento de três descritores em inglês e português indexados respectivamente no Medical Subject Headings (MeSH) e Descritores em Ciências da Saúde (DeCS). Foram inclusos estudos publicados no período de janeiro de 2015 a maio de 2020.  RESULTADOS: A Busca resultou em 8 artigos elegíveis para compor o escopo desta revisão.  Verificou-se que a fisioterapia atua com diversas abordagens, tais como exercícios aeróbicos, uso da realidade virtual, eletroestimulação entre outros. As condutas encontradas nos estudos apresentaram efeitos benéficos que repercutem na qualidade de vida de indivíduos acometidos por TRM. CONCLUSÕES: Foi verificado que diversas abordagens fisioterapêuticas podem contribuir para a melhor qualidade de vida dos pacientes com TRM, sendo de suma importância o acompanhamento profissional especializado para o bem-estar físico e psicológico desses pacientes.
Social Dynamics of Expectations and Expertise: AI in Digital Humanitarian Innovation
Authors: Dandurand Guillaume , Claveau François , Dubé Jean-François , Millerand Florence
Published: November 2020

Public discourse typically blurs the boundary between what artificial intelligence (AI) actually achieves and what it could accomplish in the future. The sociology of expectations teaches us that such elisions play a performative role: they encourage heterogeneous actors to partake, at various levels, in innovation activities. This article explores how optimistic expectations for AI concretely motivate and mobilize actors, how much heterogeneity hides behind the seeming congruence of optimistic visions, and how the expected technological future is in fact difficult to enact as planned. Our main theoretical contribution is to examine the role of heterogeneous expertises in shaping the social dynamics of expectations, thereby connecting the sociology of expectations with the study of expertise and experience. In our case study of a humanitarian organization, we deploy this theoretical contribution to illustrate how heterogeneous specialists negotiate the realization of contending visions of “digital humanitarianism.”
Tache_Mulugeta_OT2OD024899_Thoracolumbar and sacral nerve roots acute electrical stimulation and colonic motility measurements v1
Authors: Larauche Muriel
Published: November 2020

This protocol describes a process for the measurement of acute electrical stimulation-induced effects on colonic motility in anesthetized young adult Yucatan minipigs. Signals recorded from manometry probes inserted into the proximal, transverse and distal colonic regions were used to measure the effect of stimulation on the sacral or thoracolumbar nerve roots in an acute anesthetized preparation. The effect of stimulation was quantified as motility index assessments before, during and after stimulation, and the data was used to create a functional map of colonic motor response to spinal nerve roots stimulation.
O impulso metafísico na experiência estética. Itinerário da fenomenologia “afectiva” de Mikel Dufrenne
Authors: Morais Carlos Bizarro
Published: November 2020

This research will focus on the works of Mikel Dufrenne devoted to aesthetic reflection, especially on those where the author elucidates more systematically his notion of aesthetic experience. It is our intention to find out whether, inside the limits of this conception, he admits the possibility of a metaphysical dimension within the processivity of an aesthetic experience, and on what philosophical foundations he establishes that possibility. Being a controversial hypothesis, we hope to modestly contribute to the critical enhancement of the philosophical legacy that Mikel Dufrenne left us through his thought-provoking work as we are celebrating the first centenary of his birth and fifteen years of his death (1910-1995). More broadly, it is our purpose - through the clues given by the author - to bring back to the core of aesthetic debate the instances of ontological and metaphysical reflection that have been underestimated, since the waves of postmodern relativism invaded the cultural and philosophical debate. We will follow the author in setting up a phenomenological version of the Aesthetics in order to stress that, already in that conceptual project, it is possible to find methodological and systematic original choices, which point to the presence of a "surge" that breaks off the categorical boundaries of the experienced. The thematic alignment that we propose on chapters two and three aims at consolidating the image of an aesthetic experience that evolves gradually to more intense and profound levels of experience, and which scope of phenomenological, anthropological and ontological implications strengthens the conviction that we are in the presence of a metaphysical sap that nurtures it. However, we are aware that Dufrenne hesitated long enough when it came to translate philosophically this horizon of metaphysical meaning of the aesthetic experience. This fact also has probably led other researchers to formulate interpretations that are significantly discrepant from the one that we propose. Nevertheless, as we intend to show in the last chapter, it is not this lack of explicitness that prevents us from finding the aesthetic and emotional, spiritual and intellectual fruits coming from the aesthetic experience, fluidized by a metaphysical openness to the absolute. As we present those conclusions, we are convinced that the path taken by Mikel Dufrenne, while phenomenologist, became even more comprehensive and credible.
Pattern of panic-buying and its psychosocial correlates among Pakistani adults during COVID-19 pandemic
Authors: Abbas Kiran , Tahir Amber , Raza Aleena A. , Amreek F. N. U. , Kumar Jaish , Sakshi F. N. U. , Aakash F. N. U. , Asghar Fahham , Haq Inam U.
Published: November 2020

Background: As the COVID-19 pandemic rages on, one bizarre yet ubiquitous human behavior has resurfaced. Globally, people have engaged in panic buying and hoarding (PBH). This irrational practice of panic buying is driven by deficient, manipulated news amid COVID-19 crisis.Methods: A cross-sectional study was conducted with Pakistani adults (≤18 years). Data was collected through an anonymous self-reported online survey from 17th April 2020 (0800 hours) through 20th April 2020 (2200 hours) via social media platforms. The survey consisted of sociodemographic characteristics, questions regarding food/essential supplies PBH and its psychosocial correlates- attitudes about COVID-19 severity (CA), values related to social responsibility (SR), social trust (ST), and self-interest (SI). Data was entered and analyzed using IBM Statistical package for social sciences (SPSS) version 20.Results: There were 786 participants in the survey; 59% were females. Mean age was 26.6±7.6 years. Mean PBH score was 2.31±0.85 (range: 1-5). Overall, 28.4% hoarded supplies a few times or more and 47% agreed to have bought more food/essential supplies due to COVID-19. Correlation analysis showed a 12.3% positive correlation of PBH with ST and 8.5% positive correlation with SI (p<0.05). In the multivariate regression model, PBH showed a statistically significant (p<0.05) positive impact on ST and SI.Conclusions: More than one-fourth of the individuals indulged in panic buying and hoarding during the COVID-19 in Pakistan. Fear of contracting the virus and uncertainty about the duration of lockdown was the common reasons behind PBH. Social trust and self-interest were significant psychosocial contributors to hoarding behavior.
Relationship between perceptions and class participation of pregnant women
Authors: N. K. Ayu Sugiartini , N. M. Ari Febriyanti
Published: November 2020

Background: Pregnant women class is a means to learn together about health for pregnant women, in the form of face to face groups which aims to increase the knowledge and skills of mothers regarding pregnancy, pregnancy care, childbirth, postpartum care, newborn care, myths, infectious diseases and birth certificates. The purpose of the research was to analyse relationship between perceptions and class participation of pregnant women.Methods: This research was an analytical with crossectional design. The study sample were 50 pregnant women who had participated in class of pregnant women. Data was collected by the method of questionnaire. Data analysis was done using Chi Square test.Results: Based on the results of research on the frequency class participation of pregnant women, most of the respondent 33 (66%) had a good perception. Most of the respondents 34 (68%) were active in class participation of pregnant women. Analysis using Chi Square test showed most of the respondents who had a good perception 31 (66%) were active in class participation of pregnant women.Conclusions: This study suggest that class of pregnant women giving benefits because pregnant women become aware of pregnancy care, childbirth, postpartum and baby care and pregnancy gymnastic.
Knowledge and awareness of basic life support among MBBS students in tertiary care hospital in Uttar Pradesh
Authors: Gupta Bikram K. , Tomar Shubham , Karn Anukul , Singh Jassimran , Agrawal Aditi , Gupta Vanita M.
Published: November 2020

Background: Every medical student in India have to undergo a compulsory rotatory internship for completion of their course where they encounter various medical emergencies and apply their medical knowledge. An early encounter to a basic life support course and training will increase the efficacy of cardiopulmonary resuscitation and thus the outcome of the patient. This study was designed to test knowledge of MBBS students in a tertiary care hospital.Methods: This observational study was conducted in a tertiary care hospital in Uttar Pradesh and used a preformed validated questionnaire to test awareness and knowledge of basic life support and cardiopulmonary resuscitation in a sample of 500 MBBS students. Descriptive analysis was performed on the questionnaire responses. All data obtained from the questionnaire was evaluated and statistically analysed using software IBM SPSS Statistics software version 24 (IBM Corp., Armonk, NY, USA) for MS windows.Results: With a response rate of 47% among 500 MBBS students, the mean score obtained was 2.34±1.066 out of a maximum score of five. A maximum score of 2.804±1.055 obtained by 5th-year students. Surprisingly, first-year students achieved an average score of 2.66±0.97, which was higher than that of 2nd, 3rd, and 4th year students. 87% of students were like-minded to participate in the cardiopulmonary resuscitation (CPR) awareness program. Only 45% of students correctly answered the order of CPR as C-A-B (chest compression-airway-breathing).Conclusions: The study showed that though the awareness and importance of basic life support (BLS) are high among the medical students, the accurate knowledge required in performing BLS is inadequate. This study also showed that the National medical commission has taken a positive step in the incorporation of BLS in the curriculum.
Study of HER-2/neu status in adenocarcinoma of stomach and gastroesophageal junction
Authors: Fathima Nigar , Padua Michelle De , Gowrishankar Swarnalata , Goud Iravathy
Published: November 2020

Background: To study the expression of Human epidermal growth factor receptor 2 (HER-2/neu) in adenocarcinoma of stomach and gastroesophageal junction and to study and describe the association of HER-2/neu expression with various clinicopathological parameters in Indian population.Methods: Immunohistochemical testing was done on 91 cases diagnosed as adenocarcinoma of gastric and gastroesophageal junction by histological examination to determine HER2 status. HER2 amplification was confirmed by fluorescence in situ hybridization (FISH) on cases that had equivocal (immunohistochemistry-IHC score 2+) HER2 expression. The association between HER-2 positivity and clinicopathological parameters was assessed by Chi-square test.Results: The HER-2 IHC results are as follows: score 3+ (positive): 8.79%; score 2+ (equivocal): 10.99%; score 0 and 1+ (negative): 80.22%. Of the 10 cases of equivocal IHC results, 2 cases (20%) showed amplification of HER-2 gene demonstrated by dual probe FISH analysis. The overall prevalence of HER-2 positivity detected using immunohistochemistry and FISH was 10.99% (10/91 cases). HER-2 positivity correlated with the tumor grade (well and moderately differentiated tumor, p=0.013) and intestinal type (p=0.025) but not with age, gender, pathological stage and lymph node metastasis.Conclusions: HER-2 positivity in our study was 10.99%. HER-2 positivity significantly correlated with intestinal type of adenocarcinoma and the grade of the tumor. Two cases with strong HER-2 staining but in less than 10% of the tumor showed gene amplification by FISH.
A descriptive study to assess the knowledge of coronavirus among nursing students, Sirmaur, Himachal Pradesh
Authors: Sharma Anjali Devi , Verma Kavita , Sehgal Manisha , Verma Yachana , K. Anupama
Published: November 2020

Background: The coronavirus disease 2019 (COVID-19) is an emerging infectious disease caused by novel coronavirus and hence this pandemic has a great impact on the education system. Nursing students as part of the health team should know the coronavirus like other communicable diseases. Methods: A quantitative approach and cross-sectional survey research design used to assess the knowledge of Coronavirus among 145 nursing students of district Sirmaur selected through the convenient sampling technique. An online self-structured questionnaire used as a tool for data collection. Descriptive data analysis was done with SPSS (version 23).Results: The result of the study revealed that only 31.7% of students had good knowledge about COVID-19, and 68.3% had average knowledge. Conclusions: There is a need for intervention such as educational programs or pieces of training to educate about the pandemic and its prevention practices to undergraduate students to make our society more secure.