FINISHING KAYU DARI BAHAN ALAM

Finishing is the final stage of the work process of making wood products, includingthe provision of certain materials, to embellish, visually highlight and protect the wood surface.Wood products would be more attractive when finished to the right. Realize an attractiveappearance finishing something very important, therefore there is need for a new discovery forwood finishing materials.Herbs as a natural material potential for wood products finishing materials. Inaddition to friendly environment, plants are also easy to obtain. Plants of various types can beprocessed and used as a wood finishing material, either as a basic dye, a mixture of dyes, aswell as the final finishing. In these experiments conducted on turmeric, gum gambier, betelleaves, sticks henna, mangosteen rind, skin jengkol, and injet for coloring wood.Through experimental research, with the wet technique and the results indicate sapgambier saffron color the best, producing the yellow color of turmeric, gambier and injet sapproduces a red color maroon. The maximum color is produced in addition to the basic materialcontaining pigment is good, as well as precise materials processing techniques, as well asabsorption of the pigments are also good timber. Meanwhile, the color produced by betelleaves, sticks henna, mangosteen rind, skin jengkol, less than the maximum. It is based on theassumption of researchers due to lack / incompatibility processing techniques such materials.Keywords: finishing, wood, natural materials.

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Der Spielraum bei der Vermarktung von Waldleistungen ist eingeschränkt (Essay) | The scope for the commercialization of forest services is limited (essay)

Schweizerische Zeitschrift fur Forstwesen ◽

10.3188/szf.2009.0228 ◽

2009 ◽

Vol 160 (8) ◽

pp. 228-231

Author(s):

Hansruedi Walther

Keyword(s):

Private Property ◽

Legal Framework ◽

Third Parties ◽

Wood Products ◽

Forest Owner ◽

Free Access ◽

School Class ◽

Market Niche ◽

The Right ◽

Exclusive Right

A forest owner can only commercialize non-wood products and services within a tightly restricted market niche. On account of free access being permitted to the forest it is impossible to deny to third parties the consumption of many non-wood products and services: everybody has the right to be in the forest for recreation. As a result many non-wood services cannot be commercialized by the forest owner, or not exclusively. What would seem unthinkable elsewhere on private property seems to be taken for granted in the forest: third parties may take products from the forest and even sell them without being the forest owners. For certain nonwood services or products, such as the installation of rope parks or for burial in the forest, the organizer must conclude an agreement with the forest owner or draw up a contract for servitude or benefit. In addition, for these activities a permit from the Forestry Department is necessary. On the other hand, for an itinerant school class or for the production of forest honey neither a binding regulation with the forest owner nor a permit from the Forestry service is necessary, provided that no constructions are erected in the forest. The only exclusive right which remains to the forest owner, besides the sale of his property, is the exploitation of his trees within the legal framework.

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Overview of Containerless Processing Technologies

MRS Proceedings ◽

10.1557/proc-9-25 ◽

1981 ◽

Vol 9 ◽

Cited By ~ 6

Author(s):

M. Barmatz

Keyword(s):

Space Shuttle ◽

Physical Contact ◽

Materials Processing ◽

Containerless Processing ◽

Processing Technologies ◽

Air Jets ◽

Developmental Progress ◽

Processing Techniques ◽

And Control ◽

Near Future

ABSTRACTIn the near future, a large segment of the scientific community will have an opportunity to perform materials processing experiments on the Space Shuttle in the reduced gravity environment of space. Many of these experiments will require containerless processing techniques that provide manipulation and control of weightless (molten) materials without physical contact with container walls or other holding devices. A variety of containerless processing technologies are now being developed for space and ground-based materials processing facilities. The utilization of air jets or high intensity acoustic, electromagnetic or electrostatic fields can produce forces that support and manipulate materials. Most of the present containerless research is directed toward the development of high temperature systems capable of melting and resolidifying materials. This paper will review the materials processing capabilities and level of developmental progress of each technique. An introduction to available NASA test facilities will also be given.

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The Effect of Recitation Method on Learning Outcomes of “Life Events” of 5th Grade

IJPSE : Indonesian Journal of Primary Science Education ◽

10.33752/ijpse.v2i1.2067 ◽

2021 ◽

Vol 2 (1) ◽

pp. 29-35

Author(s):

Muhammad Ilyas Habibulloh ◽

Muhammad Nuruddin

Keyword(s):

Learning Outcomes ◽

Life Events ◽

Experimental Research ◽

Learning Process ◽

Quality Of Education ◽

Student Interest ◽

The Right ◽

5Th Grade ◽

Academic Year

This study aims as a way to determine the effect of the recitation method on learning outcomes of events in life that focuses on sub-theme 2 national events about the proclamation of independence day at SDN Gongseng 1 Jombang. As we know that the average learning process in schools is still centered on the teacher himself. By using the right application, it is certain that it will have a good impact on the quality of education. The lack of student interest in the methods taught by the teacher had a significant impact. In the process of working on questions, for example, students are less able to understand what is conveyed by the teacher who is able to provide a learning process whose substance is carried out by selecting the appropriate method. This research is pre-experimental research design, in the form of one-group pretest-posttest. The sample of this study consisted of 9 boys and 10 girls totaling 19 students who were in the experimental class. In the academic year 2021, it can be seen that the results of the pretest and posttest data of students by using the recitation method have sig. 0.000 < 0.05. From these results, it can be concluded that the effect of recitation has an influence on classroom learning by using conventional methods.

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Editorial 29(6)

Australasian Journal of Educational Technology ◽

10.14742/ajet.1573 ◽

2013 ◽

Vol 29 (6) ◽

Author(s):

Barney Dalgarno ◽

Sue Bennett ◽

Gregor Kennedy

Keyword(s):

Educational Technology ◽

Research Design ◽

Experimental Research ◽

External Validity ◽

Learning Design ◽

Learning Effects ◽

Research In Education ◽

The Right ◽

Internal And External Validity

<p>We are pleased to present a new issue of AJET and in the editorial we would like to discuss some of the challenges involved in undertaking and reporting on experimental research in education and in educational technology specifically. The first challenge relates to the need to find the right balance between internal and external validity in the research design, while the second relates to the need for clarity about the likely causes of learning effects: technology or learning design.</p>

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Experimental Research into the Influence of Photodetector Types on Characteristics of Optical Mini-Sticks of Unified Human- Machine Interfaces

Light & Engineering ◽

10.33383/2018-054 ◽

2018 ◽

pp. 137-142

Author(s):

Sergey A. Golubin ◽

Alexei N. Lomanov ◽

Vladimir S. Nikitin ◽

Valery M. Komarov

Keyword(s):

Experimental Research ◽

Test Bench ◽

Signal Amplitude ◽

Central Position ◽

Signal Quality ◽

Path Diagram ◽

Photo Detectors ◽

The Right ◽

The Cost ◽

Ray Path

The article provides the results of the experimental research into the influence of different types of photo detectors of digital optical ministicks on their transformation function – the useful ministick signal as a function of the ministick control lever deviation value. The set problem was solved using experimental research methods. Circuits with a photo diode (PIN photodiode PD15– 21B/TR8 manufactured by Everlight company) and circuits with a phototransistor (phototransistor KP2012P3C manufactured by Kingbright company) were studied. An automated test bench was used for the research. The test bench allows setting the ministick rotation angle and the value of ministick lever deviation from the central position to the left or to the right. The influence on ministicks was set by the test bench software. Based on the test results the test bench software plotted a ray path diagram. The ministick signal quality was assessed in terms of resolution, accuracy, nonlinearity and hysteresis. The following results were obtained in the research. The ministick using a photo transistor as a photo detector ensures the output signal amplitude and resolution which exceed those of ministick with a photodiode by factor of 3.5 to 4. It allows using ministicks with a phototransistor for highprecision control of complex robotic systems, manipulators and aircraft, and for designing joysticks and unified humanmachine interfaces on their basis. The indices of precision, nonlinearity and hystere sis of both ministick types are comparable and meet the basic requirements applied to control devices. Thus, ministicks based on phototransistors can be regarded as the best in terms of the signal quality. Taking into consideration the circuitry, overall dimensions and the cost of hardware components which are identical for both photo detectors, ministicks based on phototransistors shall be considered to be more advanced switching devices.

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Emerging Laser Materials Processing Techniques for Future Industrial Applications

Laser-Assisted Fabrication of Materials - Springer Series in Materials Science ◽

10.1007/978-3-642-28359-8_10 ◽

2012 ◽

pp. 423-478 ◽

Cited By ~ 2

Author(s):

L. M. Kukreja ◽

R. Kaul ◽

C. P. Paul ◽

P. Ganesh ◽

B. T. Rao

Keyword(s):

Industrial Applications ◽

Materials Processing ◽

Laser Materials ◽

Laser Materials Processing ◽

Processing Techniques

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Establishing the Diagnosis

Retinal Detachment ◽

10.1093/oso/9780195330823.003.0009 ◽

2009 ◽

Author(s):

Daniel A. Brinton ◽

Charles P. Wilkinson

Keyword(s):

Retinal Detachment ◽

Posterior Pole ◽

Peripheral Retina ◽

Retinal Breaks ◽

Yellow Color ◽

Red Color ◽

The Central Nervous System ◽

Retinal Artery ◽

Ciliary Artery ◽

Choroidal Vessels

The differential diagnosis of rhegmatogenous retinal detachment includes secondary (nonrhegmatogenous) retinal detachment and other entities that may simulate a retinal detachment. Nonrhegmatogenous detachments are categorized as exudative (serous) and tractional detachments. Conditions that may be mistaken for retinal detachment include retinoschisis, choroidal detachment or tumors, and vitreous membranes. Sometimes benign findings in the peripheral retina are mistaken for retinal breaks. The most prominent feature of the fundus is the optic nerve head or disc, the only place in the human body that affords a direct view of a tract of the central nervous system. The foveola, the functional center of the fundus, is located in the center of the fovea, which has a diameter of about 5°. The macula is centered on the fovea and has a diameter of about 17°. The multiple branches of the central retinal artery are readily identifi ed by their bright red color and relatively narrow caliber. The multiple tributaries of the central retinal vein are recognized by their dark red color and relatively wider caliber. In a darkly pigmented fundus, the choroidal vessels in the posterior pole can be obscured from view, but in an eye with minimal pigment, they are readily visible. The venous tributaries of the choroid that make up the vortex veins are usually easily seen. The most prominent features of the choroidal venous system are the vortex ampullae, of which there are usually four (but sometimes more). They are located approximately in the 1-, 5-, 7-, and 11-o’clock meridians, just posterior to the equator. The horizontal meridians are usually identifiable by their radially oriented, long posterior ciliary nerves, and infrequently the long posterior ciliary artery can be seen adjacent to the nerve. The nerve is relatively broad and has a yellow color, and the artery is identifiable by its red color. The artery is usually inferior to the nerve temporally, and superior to it nasally (Figure 5–1).

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CFD computation of flow in the flow path of a torque flow pump

E3S Web of Conferences ◽

10.1051/e3sconf/202020704005 ◽

2020 ◽

Vol 207 ◽

pp. 04005

Author(s):

Dmitry Svoboda ◽

Igor Borshchev ◽

Aleksandr Zharkovskii ◽

Evgeniy Tvanov ◽

Arsentiy Klyuyev

Keyword(s):

Fluid Flow ◽

Flow Visualization ◽

Experimental Research ◽

Flow Path ◽

Sufficient Accuracy ◽

Work Process ◽

Energy Characteristics ◽

Specific Speed ◽

3D Methods ◽

Flow Pump

The results are presented of numerical and experimental research of fluid flow in the flow path of a torque flow pump with specific speed ns ;: 55. The 3D methods of CFD have been shown to allow for predicting energy characteristics of this type of pumps with a sufficient accuracy. According to the results of flow visualization the work process has been analysed and conclusions drawn to enhance TFP efficiency.

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