scholarly journals Cr - spinel and clinopyroxene compositions from metagabbro of Nui Ngoc complex in Tam Ky area: evidence of island - arc magma

2021 ◽  
Vol 62 (5) ◽  
pp. 1-11
Author(s):  
Thanh Xuan Ngo ◽  
Du Khac Nguyen ◽  
Dao Anh Vu . ◽  
Chi Thi Pham ◽  
Hanh Hong Thi Nguyen ◽  
...  
Keyword(s):  
Suture Zone ◽  
Island Arc ◽  
Research Results ◽  
Continental Arc ◽  
Study Results ◽  
Ophiolitic Complex ◽  
Arc Magma

The hornblende and biotite - bearing metagabbro of the Nui Ngoc complex were exposed into a few small blocks in the southwest Tam Ky city and were viewed as parts of the Tam Ky - Phuoc Son ophiolitic complex (TPO). These rocks were undergone mylonitic deformation and metamorphism. The rocks consist mainly of orthopyroxene, clinopyroxene, plagioclase, olivine, hornblende, biotite and very few microscopic Cr - spinel. The clinopyroxene and Cr - spinel minerals were analyzed for their composition by EPMA, the results showed that: (1) The clinopyroxenes have low Al2O3 (3,2÷3,5 wt %), TiO2 (0,70÷0,82 wt %) contents and (2) the Cr - spinels have low TiO2 (0,23÷0,58 wt %) content and Mg#100* (Mg/ (Mg+Fe2+)) (32÷42) but has medium Cr# (Cr/ (Cr+Al)) (45÷52).These features are similar to those of rocks formed in anoceanic - oceanicsubduction zone that was reported for the plagiogranite of Dieng Bong complex nearby. This study results combined with previous research results in the Tam Ky - Phuoc Son suture zone show the existence of island arc, continental arc, and MOR - magmatic types.

scholarly journals U - Pb zircon age of gabbro and plagiogranite in Hiep Duc, Quang Nam and their geological significances

2021 ◽  
Vol 62 (4) ◽  
pp. 21-28
Author(s):  
Thanh Xuan Ngo ◽  
Hau Vinh Bui ◽  
Hai Thanh Tran ◽  
Binh Van Phan ◽  
Hanh Hong Thi Nguyen ◽  
...  
Keyword(s):  
Island Arc ◽  
Age Dating ◽  
Ophiolite Complex ◽  
Zircon Age ◽  
Research Results ◽  
Northeastern Part ◽  
Late Cambrian ◽  
Arc Magma ◽  
Magma Series

The gabbro and plagiogranite magmas of the Ngoc Hoi and Dieng Bong complexes are mainly distributed in the northern part of the Kon Tum block. They were previously considered parts of the Tam Ky - Phuoc Son ophiolite complex. In this study, 02 samples of gabbro and plagiogranite were collected from the Hiep Duc area. Petrographic characteristics showed that the rocks were highly foliated and weakly metamorphosed; the schist formed after the crystallization of the rocks. U - Pb zircon age dating from the gabbro rocks as 497.7±1.4 Ma, similar to the plagiogranite age of 498.0±1.3 Ma. The available results in the northern Kon Tum block and Laos indicate the existence of magma series formed during the Late Cambrian period that is probably extended from the northern Kon Tum block to the northeastern part of Laos. The research results on the northern Kon Tum block also confirmed two types of magma in the area: island - arc magma complex and ophiolite type magma complex.

Treated Textile Electrostatic Properties Study

2020 ◽  
Vol 992 ◽  
pp. 439-444
Author(s):  
I.V. Cherunova ◽  
S.S. Tashpulatov ◽  
S.V. Kurenova
Keyword(s):  
Experimental Studies ◽  
Material Structure ◽  
Ministry Of Education ◽  
Research Results ◽  
Textile Materials ◽  
Electrostatic Properties ◽  
Film Forming ◽  
Study Results ◽  
Water Proofing ◽  
Textile Fabric

In the article research results are presented, which aim to provide treated textile electrostatic properties study. In the article research results are presented, which aim to provide find out abilities of an anti-electrostatic treatment and binding agents for it in treatment of special textile materials and their dependance from modes of operating textile washing. Results of determine a composition and abilities of a functional impregnation; develop a method to study values of electrostatic field for tribocharging conditions of textile materialsare; experimental studies of electrostatic values of materials with functional treatment depending on operating washing modes also presented here. Study results allowed to establish efficiency of the proposed combination of anti-electrostatic active composition based on 5 % solution of dialkyldimethylammonium chloride with a binding agent with the effect to preserve the treatment in the material structure and content of which is 4 % in application of textile fabric with widely used fiber content (cotton 53 %, polyester + oil and water-proofing finish). Acrylic dispersion is stable film-forming component suitable in preserving anti-electrostatic treatment on the surface of a textile material. The research was made in Don State Technical University within the framework of State Assignment of the Ministry of education and science of Russia under the project 11.9194.2017/BCh.

scholarly journals Continental arc-island arc fluctuations, growth of crustal carbonates, and long-term climate change

Geosphere ◽  
2012 ◽  
Vol 9 (1) ◽  
pp. 21-36 ◽  
Author(s):  
C.-T. A. Lee ◽  
B. Shen ◽  
B. S. Slotnick ◽  
K. Liao ◽  
G. R. Dickens ◽  
...  
Keyword(s):  
Climate Change ◽  
Island Arc ◽  
Continental Arc

scholarly journals The Imbert Formation of northern Hispaniola: a tectono-sedimentary record of arc-continent collision and ophiolite emplacement in the northern Caribbean subduction-accretionary prism

2015 ◽  
Vol 7 (2) ◽  
pp. 1827-1876 ◽  
Author(s):  
J. Escuder-Viruete ◽  
A. Suárez-Rodríguez ◽  
J. Gabites ◽  
A. Pérez-Estaún
Keyword(s):  
Subduction Zone ◽  
Continental Margin ◽  
Middle Eocene ◽  
Accretionary Prism ◽  
Island Arc ◽  
Caribbean Island ◽  
Stratigraphic Sequence ◽  
Oblique Collision ◽  
The Caribbean ◽  
Ophiolitic Complex

Abstract. In northern Hispaniola, the Imbert Formation (Fm) has been interpreted as an orogenic "mélange" originally deposited as trench-fill sediments, an accretionary (subduction) complex formed above a SW-dipping subduction zone, or the sedimentary result of the early oblique collision of the Caribbean plate with the Bahama Platform in the middle Eocene. However, new stratigraphical, structural, geochemical and geochronological data from northern Hispaniola indicate that the Imbert Fm constitutes a coarsening-upward stratigraphic sequence that records the transition of the sedimentation from a pre-collisional forearc to a syn-collisional piggy-back basin. This piggy-back basin was transported on top of the Puerto Plata ophiolitic complex slab and structurally underlying accreted units of the Rio San Juan complex, as it was emplaced onto the North America continental margin units. The Imbert Fm unconformably overlies different structural levels of the Caribbean subduction-accretionary prism, including a supra-subduction zone ophiolite, and consists of three laterally discontinuous units that record the exhumation of the underlying basement. The distal turbiditic lower unit includes the latest volcanic activity of the Caribbean island arc; the more proximal turbiditic intermediate unit is moderately affected by syn-sedimentary faulting; and the upper unit is a (caotic) olistostromic unit, composed of serpentinite-rich polymictic breccias, conglomerates and sandstones, strongly deformed by syn-sedimentary faulting, slumping and sliding processes. The Imbert Fm is followed by subsidence and turbiditic deposition of the overlying El Mamey Group. The 40Ar / 39Ar plagioclase plateau ages obtained in gabbroic rocks from the Puerto Plata ophiolitic complex indicate its exhumation at ∼ 45–40 Ma (lower-to-middle Eocene), contemporaneously to the sedimentation of the overlying Imbert Fm. These cooling ages imply the uplift to the surface and submarine erosion of the complex to be the source of the ophiolitic fragments in the Imbert Fm, during of shortly after the emplacement of the intra-oceanic Caribbean island-arc onto the continental margin.

PSYCHO-PHYSIOLOGICAL STATUS OF PLAYERS DURING THE ATTACK UNDER GAME CONDITIONS

2020 ◽  
Vol 8 (2) ◽  
pp. 86-92
Author(s):  
Nataliya Lutkova ◽  
Yrii Makarov
Keyword(s):  
Self Regulation ◽  
Physiological Status ◽  
Imaging Technology ◽  
Research Results ◽  
Study Results ◽  
Volleyball Players ◽  
Game Activity ◽  
Balance Energy

In our research we revealed parameters of psycho-physiological status (PPS) of qualified volleyball players during game activity, determined dynamics of those indicators depending on attack efficacy of athletes. The purpose of the research: to identify parameters of psycho-physiological status (PPS) of qualified volleyball players performing attack actions during game activity, which have the greatest informative value for the prediction of the planned results. The task of the study was to identify PPS parameters of qualified players when performing attack actions during game activity. Methods and organization of the research. We used vibration imaging technology with VibraMed10 program to achieve the objective of the study. We brought together 12 volleyball players of the 1st adult sport category, playing for the national volleyball team of P.F. Lesgaft NSU. We determined the following PPS parameters of players: aggression, stress, anxiety, danger, balance, charisma, energy, self-regulation, inhibition, and neuroticism. Research results. The study revealed that parameters of psycho-physiological status of athletes performing attack actions are modified in accordance with all investigated indicators. Dynamics of parameters of psycho-physiological status of players is determined by the effectiveness of performed actions. The study results demonstrate that attack efficacy depends on the number of significant parameters. Such parameters include aggression, balance, energy, self-regulation and charisma. The identified PPS parameters of athletes have the greatest informative value for prediction of the planned results in game activity. Conclusion. We have revealed the informative PPS parameters of qualified volleyball players during game activity, which include aggression, balance, energy, self-regulation and charisma. Dynamics of these indicators determine the attack efficacy of athletes.

scholarly journals Aleutian island arc magma production rates and mechanisms

2019 ◽  
Author(s):  
Yongliang Bai ◽  
Diya Zhang ◽  
Dongdong Dong ◽  
Shiguo Wu ◽  
Zhenjie Wang
Keyword(s):  
High Temperature ◽  
Production Rate ◽  
Island Arc ◽  
Mantle Melting ◽  
Fracture Zones ◽  
Seismic Profiles ◽  
Production Rates ◽  
Aleutian Arc ◽  
Slab Dehydration ◽  
Arc Magma

Abstract. The variation in island arc magma production rates and their influencing mechanisms are of great significance since island arc magma is considered a main source of continental crust growth. The island arc magma directly originates from the molten mantle wedge, and the mantle melting is driven by fluids or melts from the subducted slab. Slab dehydration flux mainly depends on the slab thermal structures, and subducted slab melting requires a sufficiently high temperature. For the Aleutian subduction system, the subducted Pacific Plate has diverse thermal structures due to the existing fracture zones, ridges and slab window, so it is an ideal region for arc magma production rate research. However, the previous estimations are based on seismic profiles that only provide magma production rates at specific regions of the Aleutian arc, and these results are controversial. Here, we design a magma production rate estimation method based on gravity inversion constrained by deep seismic profiles. The first overview map of magma production rates along the Aleutian arc strike demonstrates that the magma production rates have the same trend as the slab dips, and the peaks correspond to the subduction of the fracture zones and ridges. The potential mechanisms for these correlations are as follows: (1) Slab water flux at subarc depths increases with increasing slab dip. More fluid flux would induce more mantle melting, and so the arc magma production rates are increased. (2) Water-rich serpentine is formed by hydrothermal alteration on or near the surface of the subducted slab when there are fracture zones. Serpentine decomposition at a depth of 80–120 km releases fluids in addition to the fluids released during normal slab dehydration. Therefore, more fluids induce more mantle melting and correspond a larger magma production rate. (3) The slab located in the Emperor Seamounts has a relatively high temperature and is also weak, so its melting is easier. Similarly, more slab melt means more mantle melt and a higher island arc magma production rate.

scholarly journals The effect analysis of the research results on the spatial concentration and utilization sharing of research equipment

2017 ◽  
Vol 9 ◽  
pp. 184797901771035
Author(s):  
Donghun Yoon
Keyword(s):  
Performance Index ◽  
Research Paper ◽  
Spatial Concentration ◽  
Effect Analysis ◽  
Research Results ◽  
Research Institutes ◽  
Study Results ◽  
Equipment Utilization ◽  
The Impact ◽  
Research Equipment

In this study, research materials for the spatial concentration and utilization sharing of research equipment were surveyed, and then the effect factor and the effectiveness were analyzed based on the research results. Also, information regarding research result creation was provided through research equipment utilization sharing. The research results of 100 researchers (25 national research institutes in the Ministry of Science, ICT (Information and Communications Technologies), and Future Planning of South Korea) were chosen for the effect analysis. For the study results, the medicine and pharmacy researchers showed better performance in research equipment utilization sharing than the natural science and engineering researchers. The number of research paper coauthors and the research equipment utilization sharing execution policy of research institutes influenced the rate of research equipment utilization sharing. The research field, the number of research paper coauthors, the research equipment utilization sharing execution policy of research institutes, and the research institute characteristics influenced the utilization sharing of research equipment in the research environment. Also, the utilization sharing of research equipment was statistically significantly influenced by the number of research papers and the impact factor (IF). The utilization sharing of research equipment was not statistically significantly influenced, however, by the IF mean. In this study, the quantitative performance index was found to be effective, and the qualitative performance index was found to be ineffective. In the analysis model, when the researchers followed the research equipment utilization sharing execution policy of the research institutes, the research results improved.

scholarly journals A Study of Facial Features of American and Japanese Cartoon Characters

Symmetry ◽  
2019 ◽  
Vol 11 (5) ◽  
pp. 664 ◽  
Author(s):  
Kun Liu ◽  
Jun-Hong Chen ◽  
Kang-Ming Chang
Keyword(s):  
Design Process ◽  
Facial Features ◽  
Human Face ◽  
Research Results ◽  
Real People ◽  
Study Results ◽  
Animated Characters ◽  
Cartoon Characters ◽  
Human Faces ◽  
Japanese Animation

Many researchers think that the characters in animated cartoons and comics are designed according to the exaggeration or reduction of some features based on the human face. However, the feature distribution of the human face is relatively symmetrical and uniform. Thus, to ensure the characters look exaggerated, but without breaking the principle of symmetry, some questions remain: Which facial features should be exaggerated during the design process? How exaggerated are the faces of cartoon characters compared to real faces? To answer these questions, we selected 100 cartoon characters from American and Japanese animation, collected data from their facial features and the facial features of real people, and then described the features using angles, lengths, and areas. Finally, we compared cartoon characters’ facial features values with real facial features and determined the key parts and degree of facial exaggeration of animated characters. The research results show that American and Japanese cartoon characters both exaggerate the eyes, nose, ears, forehead, and chin. Compared with human faces, taking the eye area as an example, American animation characters are twice as large compared with human faces, whereas Japanese animation characters are 3.4 times larger than human faces. The study results can be used for reference by animation character designers and researchers.

scholarly journals Improving dissemination of study results: perspectives of individuals with cystic fibrosis

2019 ◽  
Vol 15 (3-4) ◽  
pp. 1-14
Author(s):  
Emily Christofides ◽  
Karla Stroud ◽  
Diana Elizabeth Tullis ◽  
Kieran C. O’Doherty
Keyword(s):  
Cystic Fibrosis ◽  
Research Ethics ◽  
Research Results ◽  
Research Participants ◽  
Study Results ◽  
Research Findings ◽  
The Impact ◽  
To Receive ◽  
Accessible Format

The practice of communicating research findings to participants has been identified as important in the research ethics literature, but little research has examined empirically how this occurs and what research participants’ views are in this regard. We interviewed 21 adults with cystic fibrosis who had previously participated in research and 2 research coordinators at a cystic fibrosis clinic. We aimed to better understand research participants’ views on receiving research results, types of findings they are interested in, how they would like to receive this information, and the impact this might have on future participation. Participants reported that they do not generally recall receiving study findings, though many reported that they would like to receive them. While some participants were not interested in receiving results, all participants felt that these results should be provided when desired by participants and believed that receiving study findings would support future participation. Participants felt that an accessible format, such as a lay summary, would be most helpful. This study supports calls to make study findings available to participants, though the format in which they are provided requires consideration. Participants rarely recalled receiving findings despite the clinic in which this study was conducted returning them regularly. Therefore, questions pertaining to the provision of study findings must focus less on whether to share the findings and more on how to share them with participants most effectively. The logistics of providing study findings may be challenging in some cases, but participant support for the practice highlights its importance.

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