“Regressional” Observations of HVI Fiber Properties, Yarn Quality, and Processing Performance of Medium Staple Cotton

1992 ◽  
Vol 62 (4) ◽  
pp. 218-226 ◽  
Author(s):  
Yehia E. El Mogahzy ◽  
Roy M. Broughton
Keyword(s):  
Multivariate Analyses ◽  
High Volume ◽  
Short Fiber ◽  
Fiber Content ◽  
Empirical Equations ◽  
Fiber Properties ◽  
Yarn Quality ◽  
Correlation Analyses ◽  
Wide Range ◽  
Fiber Maturity

Fiber data (USDA) representing six cotton crops (1984–1989) were analyzed using regression and correlation analyses. These data consist of two high volume instrument systems (MCI and SpinLab) fiber properties and corresponding properties measured by traditional systems (the Suter-Webb array method, the Peyer Almeter, the Shirley FMT, the Shirley trash analyzer, and the Pressley strength tester). Different testing systems were compared using bivariate and multivariate analyses, and empirical equations for predicting fiber maturity and short fiber content suggested. The reliability of the results shown in this study is driven by the fact that the data examined involve a wide range of varieties and properties and a large number of observations.

scholarly journals Use of Pressured-Air for Cotton Lint Cleaning

2019 ◽  
Vol 12 (1) ◽  
pp. 31
Author(s):  
Ruixiu Sui
Keyword(s):  
Cotton Fiber ◽  
Fiber Length ◽  
Fiber Quality ◽  
High Volume ◽  
Short Fiber ◽  
Fiber Content ◽  
Mechanical Contact ◽  
Cotton Lint ◽  
Fiber Properties ◽  
Cotton Fiber Quality

Saw-type lint cleaner (STLC) was most efficient lint cleaner in cotton ginning. However, STLC damaged fiber quality. An air-bar lint cleaner (ABLC) was developed and evaluated to preserve cotton fiber quality. The ABLC used pressurized-air to remove non-lint materials from cotton fiber. During lint cleaning process, non-lint materials attached to the fiber were blown off the fiber without the fiber making aggressive mechanical contact with a grid bar in conventional saw-type lint cleaner (STLC). It was expected using this concept that the fiber quality could be preserved by reducing the damage from mechanical impact of the fiber against the grid bar. Preliminary testing of the ABLC prototype showed that ABLC generated less lint waste and had a higher turnout rate than STLC. Use of ABLC could save 2.8 kg of lint in each 225 kg bale of cotton. The High Volume Instrument (HVI) analysis indicated the fiber properties in fiber length, uniformity, short fiber content, and color were not significantly different between ABLC and STLC. However, the Advanced Fiber Information System (AFIS) tests showed STLC had better performance than ABLC in fiber length and short fiber content while the trash and dust content with ABLC was lower than the STLC. More research was necessary to further prove the concept of ABLC and improve its performance in preserving cotton fiber quality.

scholarly journals Statistical analysis of fiber quality to obtain a correlation between the fiber and yarn quality

2020 ◽  
Vol 6 (6) ◽  
Author(s):  
Rony Mia ◽  
Sheikh Sad Habib-A-Rasul ◽  
Md Arif Saleh Tasin ◽  
Md Abdullah Al Mamun ◽  
Md Fahim Ahmed ◽  
...  
Keyword(s):  
Statistical Analysis ◽  
Cotton Fiber ◽  
Fiber Quality ◽  
High Volume ◽  
Yarn Strength ◽  
Fiber Properties ◽  
Yarn Quality ◽  
Fiber Maturity

The purpose of this research was to make a correlation between the fiber and yarn quality based on different properties of the fiber. The properties of cotton fiber were tested by the High Volume Instrument (HVI) machine. Firstly, we collect fiber from a different lot and then tested the properties by the High Volume Instrument (HVI) Machine. After that, we made yarn from that lot and made the same count of yarn. The tested properties were mic, length, maturity, strength, elongation, moisture, etc. The same count of yarn was tested by the USTER EVENESS TESTER machine. Comparing the HVI report and the USTER TESTER report, we saw that how to effect different fiber properties of the different lot on the same count of yarn quality. Then we made a correlation between them. The observation suggested that yarn strength and fineness are depended upon fiber maturity. This paper reports a glimpse of the effect of fiber properties on yarn quality.

scholarly journals Impacts of Verticillium Wilt on Photosynthesis Rate, Lint Production, and Fiber Quality of Greenhouse-Grown Cotton (Gossypium hirsutum)

Plants ◽  
2020 ◽  
Vol 9 (7) ◽  
pp. 857
Author(s):  
Addissu G. Ayele ◽  
Terry A. Wheeler ◽  
Jane K. Dever
Keyword(s):  
Verticillium Wilt ◽  
Photosynthetic Rate ◽  
Fiber Quality ◽  
Short Fiber ◽  
Fiber Content ◽  
Photosynthesis Rate ◽  
Breeding Lines ◽  
Fiber Properties ◽  
Cotton Genotypes ◽  
Disease Pressure

Verticillium wilt, caused by Verticillium dahliae Kleb., leads to significant losses in cotton yield and fiber quality worldwide. To investigate Verticillium wilt impact on photosynthesis rate, yield, and fiber quality, six upland cotton genotypes, namely Verticillium susceptible (DP 1612 B2XF) and partially resistant (FM 2484B2F) commercial cultivars and four breeding lines, were grown to maturity under greenhouse conditions in soil either infested or not infested with V. dahliae microsclerotia. Photosynthetic rate, lint, and seed yield were all higher (p < 0.05) for FM 2484B2F than DP 1612 B2XF when infected with V. dahliae. When comparing healthy (H) to Verticillium wilt (VW) affected plants, fiber properties were greatly impacted. Micronaire decreased from 5.0 (H) to 3.6 (VW) with DP 1612 B2XF and 4.4 (H) to 4.1 (VW) with FM 2484B2F. The maturity ratio decreased from 0.90 (H) to 0.83 (VW) for DP 1612 B2XF and was unchanged for FM 2484B2F (0.90). Fiber properties such as short fiber content, nep count, fineness, and immature fiber content were also significantly affected under Verticillium wilt pressure. With Verticillium wilt affected plants, lines 16-13-601V and 17-17-206V performed similarly to FM 2484B2F for photosynthetic rate, yield, and all fiber properties measured. When selecting for improved cultivars in the presence of Verticillium wilt, it is important to select for relatively unchanged fiber properties under disease pressure in addition to reduced disease severity and increased yield.

Study to relate mini-spun yarn tenacity with cotton fiber strength

2019 ◽  
Vol 89 (21-22) ◽  
pp. 4491-4501 ◽  
Author(s):  
Yongliang Liu ◽  
B Todd Campbell ◽  
Christopher Delhom
Keyword(s):  
Cotton Fiber ◽  
Fiber Strength ◽  
Pearson Correlation ◽  
High Volume ◽  
Short Fiber ◽  
Ratio Method ◽  
Linear Regression Models ◽  
Fiber Properties ◽  
Yarn Tenacity ◽  
Cotton Cultivar

There has been great interest in assessing yarn tenacity directly from available cotton fiber property data acquired by various means, including high-volume instrumentation (HVI). The HVI test is a primary and routine measurement providing fiber properties to cotton researchers. Knowledge about yarn tenacity within a cotton cultivar or between cultivars could be useful with regard to understanding the selection of cotton cultivars. This study examined the effect of cotton growth location, crop year, and cultivar on three relationships (fiber strength versus fiber micronaire, yarn tenacity versus fiber micronaire, and fiber strength versus yarn tenacity), and found great variations in the Pearson correlation and the gradients of respective regression lines. Instead of developing linear regression models from HVI fiber properties to predict yarn tenacity, this study applied a simple ratio method (i.e. normalized fiber strength or yarn tenacity against five HVI fiber properties) to relate fiber strength with yarn tenacity. The short fiber index was found to have a greater effect on the correlation between modified yarn tenacity and modified fiber strength than micronaire, yellowness, upper-half mean length, or uniformity index. This result implied the feasibility of utilizing HVI fiber short fiber index and strength data, as a semiquantitative and fast approach, to compare yarn tenacity performance within a cotton cultivar or between cultivars.

scholarly journals A Slot-Die Technique for the Preparation of Continuous, High-Area, Chitosan-Based Thin Films

Polymers ◽  
2021 ◽  
Vol 13 (10) ◽  
pp. 1566
Author(s):  
Oliver J. Pemble ◽  
Maria Bardosova ◽  
Ian M. Povey ◽  
Martyn E. Pemble
Keyword(s):  
Thin Films ◽  
Mechanical Properties ◽  
High Volume ◽  
Mechanical Anisotropy ◽  
Diverse Range ◽  
Direction Parallel ◽  
High Area ◽  
Wide Range ◽  
Slot Die ◽  
Potential Applications

Chitosan-based films have a diverse range of potential applications but are currently limited in terms of commercial use due to a lack of methods specifically designed to produce thin films in high volumes. To address this limitation directly, hydrogels prepared from chitosan, chitosan-tetraethoxy silane, also known as tetraethyl orthosilicate (TEOS) and chitosan-glutaraldehyde have been used to prepare continuous thin films using a slot-die technique which is described in detail. By way of preliminary analysis of the resulting films for comparison purposes with films made by other methods, the mechanical strength of the films produced was assessed. It was found that as expected, the hybrid films made with TEOS and glutaraldehyde both show a higher yield strength than the films made with chitosan alone. In all cases, the mechanical properties of the films were found to compare very favorably with similar measurements reported in the literature. In order to assess the possible influence of the direction in which the hydrogel passes through the slot-die on the mechanical properties of the films, testing was performed on plain chitosan samples cut in a direction parallel to the direction of travel and perpendicular to this direction. It was found that there was no evidence of any mechanical anisotropy induced by the slot die process. The examples presented here serve to illustrate how the slot-die approach may be used to create high-volume, high-area chitosan-based films cheaply and rapidly. It is suggested that an approach of the type described here may facilitate the use of chitosan-based films for a wide range of important applications.

scholarly journals Surgical Management of Neuroendocrine Tumours of the Pancreas

2020 ◽  
Vol 9 (9) ◽  
pp. 2993
Author(s):  
Regis Souche ◽  
Christian Hobeika ◽  
Elisabeth Hain ◽  
Sebastien Gaujoux
Keyword(s):  
Neuroendocrine Tumours ◽  
Islet Cells ◽  
Preoperative Evaluation ◽  
High Volume ◽  
Genetic Syndromes ◽  
Active Peptides ◽  
Wide Range ◽  
Precise Diagnosis ◽  
Short And Long Term ◽  
Open Versus

Neuroendocrine tumours of the pancreas (pNET) are rare, accounting for 1–2% of all pancreatic neoplasms. They develop from pancreatic islet cells and cover a wide range of heterogeneous neoplasms. While most pNETs are sporadic, some are associated with genetic syndromes. Furthermore, some pNETs are ‘functioning’ when there is clinical hypersecretion of metabolically active peptides, whereas others are ‘non-functioning’. pNET can be diagnosed at a localised stage or a more advanced stage, including regional or distant metastasis (in 50% of cases) mainly located in the liver. While surgical resection is the cornerstone of the curative treatment of those patients, pNET management requires a multidisciplinary discussion between the oncologist, radiologist, pathologist, and surgeon. However, the scarcity of pNET patients constrains centralised management in high-volume centres to provide the best patient-tailored approach. Nonetheless, no treatment should be initiated without precise diagnosis and staging. In this review, the steps from the essential comprehensive preoperative evaluation of the best surgical approach (open versus laparoscopic, standard versus sparing parenchymal pancreatectomy, lymphadenectomy) according to pNET staging are analysed. Strategies to enhance the short- and long-term benefit/risk ratio in these particular patients are discussed.

scholarly journals Russian Public Relations in 2020: Peculiar Features of Transformation

2021 ◽  
Vol 26 (2) ◽  
pp. 302-310
Author(s):  
Marina G. Shilina ◽  
Irina I. Volkova
Keyword(s):  
Public Relations ◽  
High Volume ◽  
Corporate Communication ◽  
Professional Communication ◽  
Organizational Strategies ◽  
Strategic Communications ◽  
Corporate Strategies ◽  
Wide Range ◽  
Knowledge Competencies ◽  
Increasing Demand

The paper presents the current transformations of Russian public relations during the SaRS-COVID-19 pandemic and remote working in 2020. In response to the crisis and uncertainty, companies have adapted and restructured corporate strategies and communications. The increasing demand for communication support of strategies and daily support of corporate activities indicates the growing significance of PR and the implementation of organizational strategies, as well as the demand for the optimization of corporate communication in society. The PR industry in general and professional communication are becoming more and more integrated due to the attraction of knowledge, competencies, specialists from a wide range of related industries: marketing, sociology, management. The current communication situation caused changes in the characteristics of Russian PR in the segment of communication agencies. Despite the traditionally high volume of the agencies marketing services, the growth of crisis and digital communications has turned to be stable, which indicates the demand for more flexible PR formats. Based on an analysis of public relations of the leading local communication agencies in 2020, the authors put forward a hypothesis on the formation of the prerequisites for the transition of Russian public relations to the format of strategic communications.

scholarly journals The role of Edge-Driven Convection in the generation of volcanism I: a 2D systematic study

2020 ◽  
Author(s):  
Antonio Manjón-Cabeza Córdoba ◽  
Maxim Ballmer
Keyword(s):  
Numerical Models ◽  
High Volume ◽  
Oceanic Lithosphere ◽  
Companion Paper ◽  
Small Scale ◽  
Continental Lithosphere ◽  
Transient Phenomenon ◽  
Mantle Viscosity ◽  
Wide Range

Abstract. The origin of intraplate volcanism is not explained by the plate tectonic theory, and several models have been put forward for explanation. One of these models involves Edge-Driven Convection (EDC), in which cold and thick continental lithosphere is juxtaposed to warm and thin oceanic lithosphere to trigger convective instability. To test whether EDC can produce long-lived high-volume magmatism, we run numerical models of EDC for a wide range of mantle properties and edge (i.e., the oceanic-continental transition) geometries. We find that the most important parameters that govern EDC are the rheological paramaters mantle viscosity η0 and activation energy Ea. However, even the maximum melting volumes found in our models are insufficient to account for island-building volcanism on old seafloor, such as at the Canary Islands and Cape Verde. Also, beneath old seafloor, localized EDC-related melting commonly transitions into widespread melting due to small-scale sublithospheric convection, inconsistent with the distribution of volcanism at these volcanic chains. In turn, EDC is a good candidate to sustain the formation of small seamounts on young seafloor, as it is a highly transient phenomenon that occurs in all our models soon after initiation. In a companion paper, we investigate the implications of interaction of EDC with mantle-plume activity.

scholarly journals The role of edge-driven convection in the generation of volcanism – Part 1: A 2D systematic study

Solid Earth ◽  
2021 ◽  
Vol 12 (3) ◽  
pp. 613-632
Author(s):  
Antonio Manjón-Cabeza Córdoba ◽  
Maxim D. Ballmer
Keyword(s):  
Numerical Models ◽  
High Volume ◽  
Oceanic Lithosphere ◽  
Companion Paper ◽  
Rheological Parameters ◽  
Small Scale ◽  
Transient Phenomenon ◽  
Mantle Viscosity ◽  
Wide Range

Abstract. The origin of intraplate volcanism is not explained by plate tectonic theory, and several models have been put forward for explanation. One of these models involves edge-driven convection (EDC), in which cold and thick continental lithosphere is juxtaposed with warm and thin oceanic lithosphere to trigger convective instability. To test whether EDC can produce long-lived high-volume magmatism, we run numerical models of EDC for a wide range of mantle properties and edge (i.e., the oceanic–continental transition) geometries. We find that the most important parameters that govern EDC are the rheological parameters mantle viscosity η0 and activation energy Ea. However, even the maximum melting volumes predicted by our most extreme cases are insufficient to account for island-building volcanism on old seafloor, such as at the Canary Islands and Cabo Verde. Also, beneath old seafloor, localized EDC-related melting commonly transitions into widespread melting due to small-scale sublithospheric convection, inconsistent with the distribution of volcanism at these volcano chains. In turn, EDC is a good candidate to sustain the formation of small seamounts on young seafloor, as it is a highly transient phenomenon that occurs in all our models soon after initiation. In a companion paper, we investigate the implications of interaction of EDC with mantle plume activity (Manjón-Cabeza Córdoba and Ballmer, 2021).

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