Study on Bleaching Properties of Dark Chicken Feather

2014 ◽  
Vol 675-677 ◽  
pp. 709-712
Author(s):  
Yun Li Wang ◽  
Dan Sheng ◽  
Xiong Wei Xia ◽  
Qian Wei Zhao ◽  
Wei Lin Xu
Keyword(s):  
Theoretical Basis ◽  
Chicken Feather ◽  
Fine Hair ◽  
Bleaching Process ◽  
Before And After ◽  
Dark Color ◽  
Sound Theoretical Basis

Chicken feather have many excellent properties, unfortunately, the dark color affects its wide applications. In this study, the three stage bleaching process was used to bleach the dark chicken feather. The effects of the key chemicals on bleaching properties were discussed, and the change of the fine hair whiteness and strength before and after bleaching were investigated. It provides a sound theoretical basis for people understanding and studying the bleaching properties of chicken feather.

Translation Research for the Rehabilitation of Left Spatial Neglect and Associated Disorders of Attention in Stroke Patients

2008 ◽  
Vol 18 (2) ◽  
pp. 55-65 ◽  
Author(s):  
Nkiruka Arene ◽  
Argye E. Hillis
Keyword(s):  
Theoretical Basis ◽  
Attention Bias ◽  
Spatial Neglect ◽  
Clinical Use ◽  
Stroke Patients ◽  
Translation Research ◽  
Unilateral Neglect ◽  
Assessment And Treatment ◽  
Sound Theoretical Basis ◽  
Review Current

Abstract The syndrome of unilateral neglect, typified by a lateralized attention bias and neglect of contralateral space, is an important cause of morbidity and disability after a stroke. In this review, we discuss the challenges that face researchers attempting to elucidate the mechanisms and effectiveness of rehabilitation treatments. The neglect syndrome is a heterogeneous disorder, and it is not clear which of its symptoms cause ongoing disability. We review current methods of neglect assessment and propose logical approaches to selecting treatments, while acknowledging that further study is still needed before some of these approaches can be translated into routine clinical use. We conclude with systems-level suggestions for hypothesis development that would hopefully form a sound theoretical basis for future approaches to the assessment and treatment of neglect.

Philosophers and Physicians on the Scientific Validity of Latin Physiognomy, 1200-1500

2007 ◽  
Vol 12 (3) ◽  
pp. 285-312 ◽  
Author(s):  
Joseph Ziegler
Keyword(s):  
Early Modern ◽  
Middle Ages ◽  
Theoretical Basis ◽  
Scientific Validity ◽  
Body Of Knowledge ◽  
Rational Explanation ◽  
The Status ◽  
Jean Buridan ◽  
Natural Philosophers ◽  
Sound Theoretical Basis

AbstractThe article surveys and contextualizes the main arguments among philosophers and academic physicians surrounding the status of physiognomy as a valid science from the thirteenth to the early sixteenth centuries. It suggests that despite constant doubts, learned Latin physiognomy in the later Middle Ages was recognized by natural philosophers (William of Spain, Jean Buridan, William of Mirica) and academic physicians (Rolandus Scriptor, Michele Savonarola, Bartolomeo della Rocca [Cocles]) as a body of knowledge rooted in a sound theoretical basis. Physiognomy was characterized by stability and certainty. As a demonstrative science it was expected to provide rational explanation for every bodily sign. In this respect, learned physiognomy in the Middle Ages was dramatically different from its classical sources, from Islamic and possibly from early-modern physiognomy as well.

scholarly journals Learning with Leaflet of Electronegativity (LoEN): Enhancing Students' Understanding on Electronegativity, Chemical Bonding, and Polarity

2021 ◽  
Vol 10 (1) ◽  
pp. 60-68
Author(s):  
E. Erlina ◽  
C. Cane ◽  
D. P. Williams
Keyword(s):  
High School ◽  
Undergraduate Students ◽  
Conceptual Understanding ◽  
Chemical Bonding ◽  
Theoretical Basis ◽  
Classroom Discussion ◽  
Paired Sample ◽  
Full Color ◽  
Before And After ◽  
The Relationship

Previous research has reported that many high-school and undergraduate students have difficulty explaining the relationship between polarity and electronegativity even though they may be familiar with the concept of polarity. This study aims to address these misconceptions using a leaflet and assess its effectiveness using questionnaires and concept testing.  A simple, colorful printable leaflet was produced and distributed to students in Indonesia. The Leaflet on Electronegativity (LoEN) provided students with an overview of the theoretical basis of the concepts and guidance on applying these principles. The leaflet format is cheap and easy to mass-produce, which is an important factor given the limited access to other types of appropriate learning resources in Indonesia. The leaflet formed the basis of a classroom discussion activity. Visualization is known to play an important role in constructing students' conceptual understanding, so the leaflet made extensive use of diagrams to explain relevant concepts. The leaflet was printed in full color to make it visually appealing and facilitate student learning. Students were tested before and after learning with the LoEN. A Paired-sample t-test using SPSS is used to compare the pretest and posttest scores to measure the effectivity of the LoEN.A statistically significant improvement in scores (p = 0.000) was achieved, which indicates that using the LoEN in the classroom helps students understand the topic. Also, students' positive responses signify that the LoEN provides an engaging way to learn the concepts.

Atmospheric chemistry of alkyl iodides: theoretical studies on the mechanisms and kinetics of CH3I/C2H5I + NO3 reactions

RSC Advances ◽  
2015 ◽  
Vol 5 (107) ◽  
pp. 88087-88095 ◽  
Author(s):  
Feng-Yang Bai ◽  
Xu Wang ◽  
Yan-Qiu Sun ◽  
Xiu-Mei Pan
Keyword(s):  
Atmospheric Chemistry ◽  
Theoretical Basis ◽  
Theoretical Studies ◽  
Alkyl Iodides ◽  
Kinetics Of ◽  
Sound Theoretical Basis

Mechanisms and kinetics of the reactions of the NO3 radical with CH3I and C2H5I have been investigated from a sound theoretical basis.

Investigation of the Two-Bar Warp-Knitted Fabric Structure Effect on Luster Value

2014 ◽  
Vol 9 (2) ◽  
pp. 155892501400900
Author(s):  
Saeed Ajeli ◽  
Zoleykhah Ahmadvand
Keyword(s):  
Diffuse Reflection ◽  
Specular Reflection ◽  
Knitted Fabric ◽  
Knitted Fabrics ◽  
Fabric Structure ◽  
Measuring Surface ◽  
Before And After ◽  
Dark Color ◽  
Points Of View ◽  
Warp Knitted Fabric

Consumer points of view determine economical value of fabrics. Fabric luster plays a momentous role in attracting people's attention, especially for clothing and domestic purposes. Luster is defined by intensity of both specular and diffuse light reflection off of a surface. There are various methods for measuring surface luster. Gloss. Luster is described as the ratio of specular reflection in one angle to diffuse reflection in another angle. Two-bar warp knitted polyester fabrics such as Tricot, Locknit, Satin, reverse Locknit and Sharkskin in three different densities were provided. A mini gloss apparatus was applied to measure fabric specular reflection in the angle of sixty degrees, before and after disperse dying with different colors of white, blue and yellow. Results suggest that luster is a function of knitted fabric type, color and density. Enhancement of technical back luster resulted from longer underlap of the front bar. However, it did not change the technical face luster significantly. Density increased in all knitted fabrics and caused the luster to decrease. Dark color fabrics showed lower luster compared to light ones.

Reënforcement of Rubber by Fillers

1929 ◽  
Vol 2 (1) ◽  
pp. 21-31
Author(s):  
John T. Blake
Keyword(s):  
Fatty Acids ◽  
Theoretical Basis ◽  
Polar Compounds ◽  
The Other ◽  
Rubber Matrix ◽  
Double Integral ◽  
Other Hand ◽  
Sound Theoretical Basis ◽  
Volume Range

Abstract Wiegand's “Δ A” function, as represented by the double integral of tensile with respect to elongation and volume of a pigment over the base mix, is a practical means of expressing the reënforcing effect of the filler. On the other hand, the volume range over which the bonding of the filler is greater than the strength of the rubber matrix gives a better understanding of the condition of the filler in the rubber. Apparently, the importance of fatty acids and other polar compounds in dispersions can be put on a sound theoretical basis.

AFM Study of Untreated and Treated Fibers of Mongolian Goat Cashmere

2009 ◽  
Vol 610-613 ◽  
pp. 175-178 ◽  
Author(s):  
Namsrai Javkhlantugs ◽  
Enkhbaatar Ankhbayar ◽  
Khishigjargal Tegshjargal ◽  
Damdin Enkhjargal ◽  
Chimed Ganzorig
Keyword(s):  
Surface Roughness ◽  
Atomic Force Microscopy ◽  
Fine Structure ◽  
Ambient Conditions ◽  
Bleaching Process ◽  
Surface Change ◽  
Force Microscopy ◽  
Atomic Force ◽  
Before And After ◽  
The Difference

The morphological surface change of untreated and treated fibers of the Mongolian goat cashmere was investigated by atomic force microscopy (AFM) at ambient conditions. The cuticle scale heights of the Mongolian goat cashmere fibers were measured by the AFM for the fibers before and after treatment. The experimental results showed that the difference between the fine structure of the cuticle and surface roughness of untreated and treated fibers. We found that the surface morphological change of the cashmere fibers was strongly degraded after the bleaching process.

Masterfunctions Providing a Sound Theoretical Basis for the Extraction of AccuratekpData from PLP−SEC Chain-Length Distributions Exhibiting Poissonian and Gaussian Broadening

2003 ◽  
Vol 36 (26) ◽  
pp. 10021-10028 ◽  
Author(s):  
Andreas Kornherr ◽  
Oskar Friedrich Olaj ◽  
Irene Schnöll-Bitai ◽  
Gerhard Zifferer
Keyword(s):  
Chain Length ◽  
Theoretical Basis ◽  
Sound Theoretical Basis

scholarly journals THE REVISED CANADIAN TEST FOR THE EXCLUSION OF UNCONSTITUTIONALLY OBTAINED EVIDENCE

Obiter ◽  
2021 ◽  
Vol 30 (3) ◽  
Author(s):  
BC Naudé
Keyword(s):  
South African ◽  
Theoretical Basis ◽  
The South ◽  
Exclusionary Rule ◽  
New Approach ◽  
Main Motivation ◽  
Canadian Law ◽  
Administration Of Justice ◽  
Sound Theoretical Basis ◽  
Do So

Although South African courts have relied on Canadian law to interpret section 35(5) of the Constitution, they have also been hesitant to do so, since the previous Canadian approach clearly had its shortcomings. The Canadian Supreme Court's decision in R v Grant has now addressed these problems by putting forward an approach that is less rigid and more simplistic to apply. The new test reflects properly the main motivation behind a constitutionally entrenched exclusionary rule and thereby provides a sound theoretical basis for the application of such a rule. Because their new approach has brought the South African and Canadian tests closer together, more stands to be gained from future Canadian decisions in this regard. Perhaps the most important aspect of the Grant decision is that it shows why it is unnecessary to treat the two legs of the South African rule as separate tests. There should in principle be only one test: namely whether the admission of unconstitutionally obtained evidence would be detrimental to the administration of justice. 

scholarly journals Generating novel multi-scroll chaotic attractors via fractal transformation

2021 ◽  
Author(s):  
Dengwei Yan ◽  
Musha Ji’e ◽  
Lidan Wang ◽  
Shukai Duan ◽  
Xinyu Du
Keyword(s):  
Efficient Method ◽  
Theoretical Basis ◽  
Chaotic Systems ◽  
Chaotic Attractors ◽  
Hardware Platform ◽  
New Class ◽  
Chaotic Sequences ◽  
Offset Boosting ◽  
Before And After ◽  
First Time

Abstract The fractal and chaos are bound tightly, and their relevant researches are well-established. Few of them, however, concentrates on the research of the possibility of combining the fractal and the chaotic systems to generate multi-scroll chaotic attractors. This paper presents a novel non-equilibrium point chaotic system, exhibiting extremely rich and complex hidden behaviors including chaos, hyper-chaos, multi-scroll attractors, extreme multi-stability and initial offset-boosting. The proposed system is combined with fractal transformation respectively, and a new class of multi-scroll attractors, such as multi-ring attractors and separated-scroll attractors, is observed. Particularly, swallow-shaped attractors for the first time is found. Moreover, another efficient method to generate a different class of chaotic attractors uses parabola transformation and triangle transformation. Additionally, the spectrum entropy ( SE ) complexity is employed to discuss the complexity of the proposed system before and after fractal, resulting in a chaotic sequences with fractal transformation that has higher complexity. Finally, we develop a hardware platform to implement the presented attractors before and after fractal in a way to confirm the accuracy of the numerical simulations, providing a theoretical basis for the next application in image encryption.

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