scholarly journals THE CONVERSION OF THE MOISTURE-STABILITY WASTE-PAPERS WITH POLYMERIC COVERING. 1. BREAK-ING-UP OF THE WASTE-PAPER

2019 ◽  
pp. 399-405
Author(s):  
Yuriy Davidovich Alashkevich ◽  
Robert Zus'evich Pen ◽  
Natalya Viktorovna Karetnikova ◽  
Larisa Valer'evna Chendylova
Keyword(s):  
Acid Medium ◽  
Waste Paper ◽  
Chemical Processing ◽  
Regression Equations ◽  
Sodium Persulfate ◽  
Dry Grind ◽  
Graphic Presentation ◽  
Higher Temperature ◽  
Moisture Stability ◽  
Sodium Consumption

Breaking-up of waste-paper with polyurethan and polyaziridin was studied. Paper moisture-stability is 49–51%. The waste paper reduced to the degree size of the particles 5–8 mm in the dry grind mill and chemical processing under higher temperature (to 70 °C) by sodium persulfate and hydroxide solution; duty of water 6. Cooking duration varied from 1 to 5 hours, solution strength of persulfate sodium – from 2 to 12%, hydroxide sodium – from 0.5 to 3% from the mass of bone-dry waste-paper. The secondary fiber received by breaking-up of the pulp in the hydropulper. The dependency degree of breaking-up, losses of the cellulose and liquor pH from the cooking variable factors approximated by the regression equations of the second order, which used for graphic presentation results. At the most importance of the all variable factors the cooks ended in the acid medium with pH 3 under practically full persulfate and hydroxide sodium consumption; at that the degree of the breaking-up more than 80% was reached, losses of the cellulose under the all conditions remained within the range of 12.6–14.6%. The necessary operations of the breaking-up: crush the dry waste-paper; the cooking of the waste-paper with sodium persulfate and hydrate; breaking-ap of the waste-paper in the hydropulper; washing the stringy mass by water; the hydrodynamic milling.

scholarly journals THE CONVERSION OF THE MOISTURE-STABILITY WASTE-PAPERS WITH POLYMERIC COVERING. 2. CHAR-ACTERISTIC OF THE WASTE PAPER

2020 ◽  
pp. 365-371
Author(s):  
Yuriy Davydovich Alashkevich ◽  
Robert Zus'evich Pen ◽  
Natal'ya Viktorovna Karetnikova ◽  
Larisa Valer'yevna Chendylova ◽  
Viktor Anatol'yevich Kozhukhov ◽  
...  
Keyword(s):  
Cell Wall ◽  
Strength Properties ◽  
Waste Paper ◽  
Chemical Processing ◽  
Sodium Persulfate ◽  
Dry Grind ◽  
Thermochemical Processing ◽  
Higher Temperature ◽  
Moisture Stability ◽  
Cooking Liquor

Influence of the thermochemical processing (the cook) conditions and of the milling on characteristic of the waste paper with polyurethan and polyaziridin was studied. The waste paper was  reduced to the degree size of the particles 5...8 mm in mill of the dry grind and chemical processing under higher temperature (to 70 °C) by solution, contain sodium persulfate and hydroxide; duty of water 6. Duration of cook varied from 1 to 5 hours, expense of persulfate sodium varied from 2 to 12%, hydroxide sodium – from 0.5 to 3% from mass of the waste-papers.  The secondary fiber was obtaining by breaking-up of the pulp in the hydropulper.  The dependency of the length and factor of the form of the secondary fiber from conditions cook was absent. The slight width increasing of the fibers with the higher pH of cooking liquor was determined: from 26.5 мкм under pH 3–4 to 29 мкм under pH 8–9. The conjectural reason is swelling of the cell wall. The waste paper milling was executed in the «stream-barrier» machine. The strength properties of the paper correspond with the feature, inherent of the secondary pulp.

Nucleation of Disorder in Fe3Al Alloys

1967 ◽  
Vol 25 ◽  
pp. 312-313
Author(s):  
P. R. Swann ◽  
W. R. Duff ◽  
R. M. Fisher
Keyword(s):  
Electron Microscopy ◽  
Transmission Electron Microscopy ◽  
Annealing Temperature ◽  
Antiphase Domain ◽  
Effect Of Temperature ◽  
Domain Structures ◽  
Transmission Electron ◽  
Domain Boundaries ◽  
Higher Temperature ◽  
The One

Recently we have investigated the phase equilibria and antiphase domain structures of Fe-Al alloys containing from 18 to 50 at.% Al by transmission electron microscopy and Mössbauer techniques. This study has revealed that none of the published phase diagrams are correct, although the one proposed by Rimlinger agrees most closely with our results to be published separately. In this paper observations by transmission electron microscopy relating to the nucleation of disorder in Fe-24% Al will be described. Figure 1 shows the structure after heating this alloy to 776.6°C and quenching. The white areas are B2 micro-domains corresponding to regions of disorder which form at the annealing temperature and re-order during the quench. By examining specimens heated in a temperature gradient of 2°C/cm it is possible to determine the effect of temperature on the disordering reaction very precisely. It was found that disorder begins at existing antiphase domain boundaries but that at a slightly higher temperature (1°C) it also occurs by homogeneous nucleation within the domains. A small (∼ .01°C) further increase in temperature caused these micro-domains to completely fill the specimen.

Application Of Electron Probe Analyses Of Minerals In Discussing The Relationship Between Ductile Deformation And Metamorphism

1990 ◽  
Vol 48 (2) ◽  
pp. 250-251
Author(s):  
Fan Guochuan ◽  
Sun Zhongshi
Keyword(s):  
Chemical Composition ◽  
Shear Deformation ◽  
Electron Probe ◽  
General Rule ◽  
Granulite Facies ◽  
Ductile Deformation ◽  
Higher Temperature ◽  
Ductile Shear ◽  
The Relationship ◽  
Ductile Shear Deformation

Under influence of ductile shear deformation, granulite facies mineral paragenesis underwent metamorphism and changes in chemical composition. The present paper discusses some changes in chemical composition of garnet in hypers thene_absent felsic gnesiss and of hypersthene in rock in early and late granulite facies undergone increasing ductile shear deformation .In garnet fetsic geniss, band structures were formed because of partial melting and resulted in zoning from massive⟶transitional⟶melanocrate zones in increasing deformed sequence. The electron-probe analyses for garnet in these zones are listed in table 1 . The Table shows that Mno, Cao contents in garnet decrease swiftly from slightly to intensely deformed zones.In slightly and moderately deformed zones, Mgo contents keep unchanged and Feo is slightly lower. In intensely deformed zone, Mgo contents increase, indicating a higher temperature. This is in accord with the general rule that Mgo contents in garnet increase with rising temperature.

Human-hair analysis

1992 ◽  
Vol 50 (1) ◽  
pp. 886-887
Author(s):  
Brenda E. Lambert ◽  
Ernest C. Hammond
Keyword(s):  
Human Hair ◽  
Hair Analysis ◽  
Hair Shaft ◽  
White Female ◽  
Chemical Processing ◽  
X Ray ◽  
Hair Samples ◽  
Wave Technique ◽  
Permanent Wave ◽  
Scanning Electron

The purpose of this study was to examine the external structure of four human hair shaft samples with the scanning Electron Microscope (SEM) and to obtain information regarding the chemical composition of hair by using the attached x ray microanalysis unit.The hair samples were obtained from two female subjects. Sample A was taken from a black female and had not undergone any type of chemical processing. Sample B, C, D were taken from a white female, and were natural, processed, and unpigmented, i.e. “gray”, respectively. Sample C had been bleached, tinted, and chemically altered using a permanent wave technique.

Computer Assistance in the Clinical Investigation of Pulmonary Function Studies

1973 ◽  
Vol 12 (02) ◽  
pp. 102-107 ◽  
Author(s):  
D. J. Protti ◽  
Nancy Craven ◽  
A. Naimark ◽  
R. M. Cherniack
Keyword(s):  
Information System ◽  
Pulmonary Function ◽  
Additional Data ◽  
Normal Values ◽  
Clinical Investigation ◽  
Regression Equations ◽  
Beneficial Effects ◽  
Computer Assistance ◽  
Manual Methods

A previously described comprehensive respiratory information system (CRIS) has been changed to introduce new spirometric tests which are sensitive to minor abnormalities, revise on the basis of additional data the regression equations which define normal values to various parameters of pulmonary function and refine the system’s interpretation scheme. The beneficial effects of transferring the system from a large IBM 360/65 to a small CDC 1700 are presented. An analysis of the costs of processing routine pulmonary function studies reveals that a 40°/o saving is realized when a computer is used in comparison to the use of the usual manual methods.

PROSPEK USAHA INOVASI SPEAKER DAN PAJANGAN UNIK UPAYA PEMANFAATAN LIMBAH GULUNGAN KERTAS

2019 ◽  
Vol 2 (2) ◽  
pp. 171
Author(s):  
Saputri Rizki Ramadhanti ◽  
Joti Dina Kartikasari ◽  
Alfian Muttoqim Muttoqim ◽  
Umi Farida Farida ◽  
Amanda Oktaviani Amanda
Keyword(s):  
College Students ◽  
Social Media ◽  
Economic Value ◽  
Waste Paper ◽  
Direct Selling ◽  
Paper Waste ◽  
Entrepreneurial Spirit ◽  
Surrounding Environment ◽  
Business Opportunities ◽  
New Business

The amount of paper waste, especially paper waste of yarn rolls in the socks manufactured factory and the convection industry that has not been used to get high economic value is an opportunity to open a new business, especially in the electronic and art craft product. SEPIK PANIK (Speaker of Music and Unique Display of Waste Paper Rolls) is an innovation from processing paper waste to be a unique speaker. The purposes of this program are: 1) Utilizing paper waste to get high selling value. 2) Creating handmade products from paper waste into speakers as well as unique creative display. 3) To accommodate the desire of college students who have entrepreneurial spirit and artistic creations to open new business opportunities. The method of make this SEPIK PANIK product includes 1) Making paper tube of speaker and 2) Making a Unique Display. The Sales of this product have been carried out during May to August 2019, products that have been sold are 34 units, obtained a profit of Rp. 1.170,000. Sales and promotion methods are carried out both online through social media and offline, namely direct selling and consignment. Based on these results, this business is very profitable and can benefit the surrounding environment.

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