scholarly journals Chemical Composition of Abaca (Musa textilis) Leaf Fibers Used for Manufacturing of High Quality Paper Pulps

2006 ◽  
Vol 54 (13) ◽  
pp. 4600-4610 ◽  
Author(s):  
José C. del Río ◽  
Ana Gutiérrez
2005 ◽  
Vol 115 (4) ◽  
pp. 333-343 ◽  
Author(s):  
Cécile Sigoillot ◽  
Susana Camarero ◽  
Teresa Vidal ◽  
Eric Record ◽  
Michèle Asther ◽  
...  

2004 ◽  
Vol 35 (2-3) ◽  
pp. 113-120 ◽  
Author(s):  
Susana Camarero ◽  
Olga Garcı́a ◽  
Teresa Vidal ◽  
José Colom ◽  
José C del Rı́o ◽  
...  

Author(s):  
Tetsuhisa GOTO ◽  
Hideki HORIE ◽  
Toshihiro MUKAI ◽  
Tomoko SENBA ◽  
Hideaki MASUDA ◽  
...  

2016 ◽  
Vol 12 (S329) ◽  
pp. 297-304
Author(s):  
Miguel A. Urbaneja ◽  
Rolf P. Kudritzki

AbstractBlue supergiant stars of B and A spectral types are amongst the visually brightest non-transient astronomical objects. Their intrinsic brightness makes it possible to obtain high quality optical spectra of these objects in distant galaxies, enabling the study not only of these stars in different environments, but also to use them as tools to probe their host galaxies. Quantitative analysis of their optical spectra provide tight constraints on their evolution in a wide range of metallicities, as well as on the present-day chemical composition, extinction laws and distances to their host galaxies. We review in this contribution recent results in this field.


2014 ◽  
Vol 609-610 ◽  
pp. 64-67
Author(s):  
Xiao Ni Ma ◽  
Li Hua Zhang ◽  
Li Xue Zheng ◽  
Zhan Hua Yang ◽  
Qing Gao ◽  
...  

Anodic spark deposition (ASD) is a novel technique to deposit bioceramic films on the surface of titanium (Ti) and its alloys, and the films prepared with nano/micro scale pores are characterized by high-quality performance for dental implant. Among the process parameters, electrolyte provides a leading role owing to its vital influence not only on the films chemistry but also on the electrical conductivity of the circuit, which affects the film properties. In this study, titania porous films were synthesized by ASD and the effect of electrolytic temperature on microstructure and chemical composition of the films was studied. The results show that the electrolytic temperature could significantly influence the surface topography, thickness and chemical composition of the oxidation films produced by ASD and, therefore, determined the layered hydroapatite (HA) deposition as the other process parameters were fixed.


2019 ◽  
Vol 3 (2) ◽  
Author(s):  
Denitsa Ivanova-Alexandrova ◽  
◽  
◽  

The long lifecycle, also known as durability and the permanence / invariability in the quality of papers and cardbords for graphic art, are today the basic requirements, imposed by printed art in terms of high quality parameters. These two factors are a manifestation, depending on different internal chemical-composition properties of the paper consistency and external influences of the ambience. Longevity and permanence are perceived as a function of aging and are actually observed at a later point in time. It is important to clarify that they are terms with different contents where „durability” is perceived as the ability of the paper or cardboard to resist the impact of wear during use, and the „permanence” is the possibility of product to remain chemically and physically stable for a long period of time.


Author(s):  
N.N. Malushin ◽  
◽  
D.A. Romanov ◽  
A.P. Kovalev ◽  
L.P. Bashchenko ◽  
...  

Microhardness distributions, surface morphology, and elemental composition of a deposited layer of a heat-resistant alloy of the type P2M8U steel formed by plasma surfacing in a protective-alloying nitrogen medium are studied. It was established that the surfacing technology and surfacing material allows to obtain a high-quality deposited alloy without cracks, pores, slag inclusions and defects of macro- and microstructure. It has been established that the deposited material is pearlite grains at the boundaries and grain junctions of which are carbonitrides based on iron, tungsten, chromium, molybdenum, aluminum (Fe6 W6 NC and AlN).


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