scholarly journals A learning module in hair restoration surgery: A simple and economic method to learn all steps of strip method of hair follicles harvesting and implantation

2017 ◽  
Vol 50 (03) ◽  
pp. 230-235
Author(s):  
Anil Kumar Garg ◽  
Seema Garg
Keyword(s):  
Hair Follicles ◽  
Strip Method ◽  
Learning Module ◽  
Economic Method ◽  
Or Practice ◽  
Increasing Demand ◽  
Global Increase ◽  
Materials Used ◽  
User Friendly ◽  
Short Time

ABSTRACTBackground: There is a global increase in demand for hair transplant as well as increasing demand for trained assistants and surgeons. It is a fact that permanent donor hair follicles are limited and any loss during learning is permanent and irreversible, so there is no place to learn and/or practice on a patient. Objective: To develop a learning module in hair restoration surgery to learn all steps of strip method of hair follicles harvesting and methods of implantation. Materials and Methods: In this learning module, the materials used are paper, pencil, plant leaf, foam and thread. The last step is on goat skin. Module has been divided into multiple steps. The first step is training of microsurgery position, the second step is training of movement at wrist using paper and pencil, the third step is strip harvesting and slivering on foam model, the fourth step is learning of follicle dissection on leaf model, the fifth step is thread follicle implantation on leaf bed. After practising on non-living model finally, all steps are practised on goatskin, starting from slivering, follicle dissection and implantation of goat follicles on leaf. Conclusion: This is very economical and user-friendly system to learn all steps of strip method of hair follicle harvesting and methods of implantation as well. The materials used are available around us and anyone can learn as well as train his or her technicians in very short time.

Optimales Layout einer Walderschliessung

2016 ◽  
Vol 167 (5) ◽  
pp. 294-301
Author(s):  
Leo Bont
Keyword(s):  
Road Network ◽  
Spatial Arrangement ◽  
Problem Situation ◽  
Optimal Layout ◽  
Forest Road ◽  
The Road ◽  
Network Cost ◽  
User Friendly ◽  
Short Time

Optimal layout of a forest road network The road network is the backbone of forest management. When creating or redesigning a forest road network, one important question is how to shape the layout, this means to fix the spatial arrangement and the dimensioning standard of the roads. We consider two kinds of layout problems. First, new forest road network in an area without any such development yet, and second, redesign of existing road network for actual requirements. For each problem situation, we will present a method that allows to detect automatically the optimal road and harvesting layout. The method aims to identify a road network that concurrently minimizes the harvesting cost, the road network cost (construction and maintenance) and the hauling cost over the entire life cycle. Ecological issues can be considered as well. The method will be presented and discussed with the help of two case studies. The main benefit of the application of optimization tools consists in an objective-based planning, which allows to check and compare different scenarios and objectives within a short time. The responses coming from the case study regions were highly positive: practitioners suggest to make those methods a standard practice and to further develop the prototype to a user-friendly expert software.

The Impact of Carbon Nanotubes and Graphene on Electronics Industry

2018 ◽  
pp. 2897-2907
Author(s):  
Rafael Vargas-Bernal ◽  
Gabriel Herrera-Pérez ◽  
Margarita Tecpoyotl-Torres
Keyword(s):  
Carbon Nanotubes ◽  
Electrical Properties ◽  
Integrated Circuits ◽  
Electronics Industry ◽  
Future Trends ◽  
Technology Roadmap ◽  
The World ◽  
Materials Used ◽  
Short Time ◽  
The Impact

Since its discovery in 1991 and 2004, carbon nanotubes (CNTs) by Sumio Iijima, and graphene by Andre Geim and Konstantin Novoselov in 2004, these materials have been extensively studied around the world. Both materials have electronic, thermal, magnetic, optical, chemical, and mechanical extraordinary properties. International Technology Roadmap for Semiconductors (ITRS) has predicted that these nanomaterials are potential replacements of the conventional materials used in the manufacture of integrated circuits. Two of the technological aspects that both materials share and have reduced their extensive use are processing and dispersion required to homogenize the electrical properties of the materials based on them. Fortunately, these problems are being solved thanks to the ongoing investigation, and in a short time the materials used in today's electronics industry will be replaced by devices based on these novel materials. The impact of the applications of both materials in the electronics industry, as well as future trends in the following decades are discussed in this paper.

Micro-computed tomography analysis of natural fiber and bio-matrix tubular-braided composites

2019 ◽  
Vol 53 (28-30) ◽  
pp. 4003-4013 ◽  
Author(s):  
Brianna M Bruni-Bossio ◽  
Garrett W Melenka ◽  
Cagri Ayranci ◽  
Jason P Carey
Keyword(s):  
Computed Tomography ◽  
Natural Fiber ◽  
Volume Fraction ◽  
Void Content ◽  
Micro Computed Tomography ◽  
Braided Composites ◽  
Fiber Volume ◽  
Increasing Demand ◽  
Materials Used ◽  
Curing Method

There is an increasing demand for the use of “green”-based materials as reinforcement and matrix materials in composites. However, the ability of these natural-based materials to perform as consistently and reliably as conventional materials is still relatively unknown. A key importance in the viability of these materials is the evaluation of the content of voids and imperfections, which may affect the properties of the entire composite. In this study, the microstructure of tubular-braided composites manufactured from cellulose fibers and a partially bio-derived resin was studied with the use of micro-computed tomography. These methods were used to determine the effect of modifying braid angle, resin type, and curing method on fiber volume fraction, void volume, and void distribution. It was determined that the void content increased with the increase in braid angle, and vacuum-bagging reduced the total void content. The sample with the smallest braid angle produced with vacuum-bagged curing contained a void fraction of 1.5%. The results of this study proved that the materials used could be viable for further testing and development and that micro-computed tomography imaging is valuable for identifying how to improve consistency and minimize imperfections to create more accurate and reliable natural fiber-braided composites.

scholarly journals Self-sustaining super car

2015 ◽  
Vol 1 (3) ◽  
pp. 132
Author(s):  
Dr. Uthayakumar ◽  
Praveen Ilango ◽  
Meiyappan A N ◽  
Rama Nathan ◽  
Naveen Kumar J ◽  
...  
Keyword(s):  
Energy Harvesting ◽  
Piezoelectric Materials ◽  
Sustainable Energy ◽  
Production Capacity ◽  
Future Generations ◽  
Commercial Vehicles ◽  
Piezoelectric Elements ◽  
Side Walls ◽  
Increasing Demand ◽  
Materials Used

There is an ever increasing demand for energy due to the growth of population across the world. This scenario necessitates alternative, efficient and sustainable energy sources to serve the current needs, without affecting abilities to meet future generations needs. Piezoelectricity is a widely researched sustainable energy source. Various forms of piezoelectric materials have been used to harvest the energy from vibration, repetitive strikes and bending of structures. This paper discusses different piezoelectric materials used in tires of commercial vehicles to harvest energy that can be used to charge batteries to power the vehicle and its electric sensors. Different techniques of energy harvesting are explored using the highly bendable piezoelectric elements including PVDF and PZT. The energy harvesting relies on the deformation of tires tread-walls and side-walls when the vehicles weight acts on it. The adopted methods are compared to analyse their effectiveness in terms of power production capacity.

A compact device for loading diamond anvil cells with low-boiling pressure-transmitting media

2012 ◽  
Vol 46 (1) ◽  
pp. 267-269 ◽  
Author(s):  
Boris A. Zakharov ◽  
Andrey F. Achkasov
Keyword(s):  
Relative Humidity ◽  
Liquid Nitrogen ◽  
Simple Design ◽  
Diamond Anvil Cells ◽  
Cooling Agent ◽  
Diamond Anvil ◽  
Laboratory Device ◽  
Materials Used ◽  
Short Time ◽  
Environmental Temperatures

A new compact laboratory device for loading diamond anvil cells with low-boiling pressure-transmitting media is described. This device allows, in particular, the easy loading of diamond anvil cells with pentane–isopentane (1:1) mixture at environmental temperatures up to 303 K and relative humidity at least up to 75–80%. The relatively simple design, the easy availability of materials used for the device and the application of liquid nitrogen as cooling agent allow the manufacture of such a device in a short time at almost any laboratory.

scholarly journals Improvement of bio-compatible AZ61 magnesium alloy corrosion resistance by fluoride conversion coating

2016 ◽  
Vol 60 (5) ◽  
pp. 132-138 ◽  
Author(s):  
J. Drábiková ◽  
F. Pastorek ◽  
S. Fintová ◽  
P. Doležal ◽  
J. Wasserbauer
Keyword(s):  
Corrosion Resistance ◽  
Magnesium Alloy ◽  
Magnesium Alloys ◽  
Simulated Body Fluid Solution ◽  
Conversion Coating ◽  
Az61 Magnesium Alloy ◽  
Wrought Magnesium Alloy ◽  
Consequent Effect ◽  
Materials Used ◽  
Short Time

Abstract Magnesium and its alloys are perspective bio-degradable materials used mainly due to their mechanical properties similar to those of mammal bones. Potential problems in utilization of magnesium alloys as bio-materials may relate to their rapid degradation which is associated with resorption problems and intensive hydrogen evolution. These problems can be eliminated by magnesium alloys surface treatment. Therefore, this work aims with analysis of the influence of fluoride conversion coating on corrosion characteristics of magnesium alloy. Unconventional technique by insertion of wrought magnesium alloy AZ61 into molten Na[BF4] salt at temperature of 450 °C at different treatment times was used for fluoride conversion coating preparation. The consequent effect of the coating on magnesium alloy corrosion was analyzed by means of linear polarization in simulated body fluid solution at 37 ± 2 °C. The obtained results prove that this method radically improve corrosion resistance of wrought AZ61magnesium alloy even in the case of short time of coating preparation.

scholarly journals Modification of Functionalized Multi Walled Carbon Nanotubes by Olive Oil as Economic Method for Bacterial Capture and Prevention

2017 ◽  
Vol 14 (4) ◽  
pp. 1513-1522
Author(s):  
Mohammed J. Haider ◽  
Duha S. Ahmed ◽  
M.R. Mohammad ◽  
Adawiya J. Haider
Keyword(s):  
Electron Microscopy ◽  
Carbon Nanotubes ◽  
Olive Oil ◽  
Salmonella Typhi ◽  
Cell Counting ◽  
Economic Method ◽  
Multi Walled Carbon Nanotubes ◽  
Direct Cell ◽  
Short Time ◽  
Walled Carbon Nanotubes

ABSTRACT: In the present work, a new and economic method of functionalized Multi walled Carbon Nanotubes (MWCNTs) with olive oil has been improved as compared to the traditional methods, that composed of catalysts such as fatty acids (FFA), glycerol and triacylglycerols of oxidation power. This method is initiated by ultrasoniction the mixture which leads to functionalize the surface during the process of interaction with oil olive for a short time (30 min). Then, the results of this work were examined by using Scanning Electron Microscopy (SEM) and High Resolution Transmission Electron Microscopy (HRTEM) to study the morphology of the surface treated with olive oil, X-ray diffraction (XRD) was employed to confirm the functionalized method and using Fourier transformed infrared spectroscopy (FTIR) that shows the formation of functional group on to MWCNTs surface such as C=O and COOH. The final part includes a study antibacterial activity of Multi walled Carbon nanotubes (MWCNTs) against gram negative (E. coli and Salmonella typhi) and gram positive (S. aureus) bacteria using direct cell counting. Besides, evaluating the antibacterial assays of treated MWCNTs after incubated for various time to elucidate the interaction between functionalized MWCNTs and cell membrane to determine the study the adsorption of bacteria on the surface of (MWCNTs), which are used in environmental applications, such as sensing of contaminated water and using as a filter.

scholarly journals Isolation, characterization and growth response study of chlorpyrifos utilizing soil bacterium Pseudomonas putida JR16

2018 ◽  
Author(s):  
Jalpa K. Rank ◽  
Neelam M. Nathani ◽  
Ankit T. Hinsu ◽  
Anjali U. Joshi ◽  
Mootapally Chandra Shekar ◽  
...  
Keyword(s):  
Pseudomonas Putida ◽  
Agricultural Soils ◽  
Carbon Sources ◽  
Organophosphorus Pesticide ◽  
Morphological Characteristics ◽  
Field Application ◽  
Pseudomonas Spp ◽  
Agricultural Pesticides ◽  
Increasing Demand ◽  
Materials Used

Agricultural pesticides are one of the indispensable materials used to meet increasing demand of food crops. Consequently, pesticides find their way to various ecosystems resulting in detrimental pollution problems. Chlorpyrifos is a predominantly used organophosphorus pesticide leading to harmful effects including abnormal cell division. Scientific attempt to eliminate these contaminants from the environment using biodegradation approach has been appreciated. Soil bacteria capable of utilizing chlorpyrifos are potential bioremediation candidates. In context to the same, the present study isolated six bacteria growing in presence of chlorpyrifos as sole carbon source from agricultural soils. The obtained bacterial isolates characterized based on their morphological characteristics, biochemical reactions were found to be Pseudomonas spp. JR16, Pseudomonas spp. J1, Pseudomonas spp. J2, Pantoea spp. J3, Enterobacter spp. J4 and Kocuria spp. J5. Among these, the most potential of them viz., Pseudomonas spp. JR16, was further proceeded for molecular identification and was observed to be the Pseudomonas putida JR16. The influence of different chlorpyrifos concentration, various carbon sources, metals sources, temperature and pH on the growth of Pseudomonas putida JR16 was assessed for developing optimum conditions for on field application of the strain for biodegradation of chlorpyrifos.

scholarly journals Pengembangan Modul Elektronik Pemrograman Berorientasi Objek untuk Siswa Kelas XI Rekayasa Perangkat Lunak dengan Model Four-D

2019 ◽  
Vol 4 (1) ◽  
pp. 12-16
Author(s):  
Angkati Permani ◽  
Priyanto Priyanto
Keyword(s):  
Research And Development ◽  
Engineering Students ◽  
Object Oriented ◽  
Development Model ◽  
Average Score ◽  
Learning Module ◽  
Research Population ◽  
Development Approach ◽  
Self Instruction ◽  
User Friendly

This article aims to explain the feasibility of an electronic-based "Making Object Oriented Program with Class" learning module. This study uses an R&D (Research and Development) approach with the Four-D development model. The research population was Grade XI Software Engineering Students of SMK Negeri 1 Rembang Purbalingga. The results showed that each aspect included in the category was very feasible with the average score obtained in the aspect of self-instruction was 3.10, the stand alone aspect was 3.33, the adaptive aspect was 3, the user friendly aspect was 3, the aspect of content eligibility was 3 and the aspect of language has an average of 3.14. Overall material experts show that the material in this module is in the very feasible category with a mean of 3.10 and the percentage of material quality is 77.38%. From these results, it can be stated that this electronic module has fulfilled the characteristics of self-instruction, stand alone, adaptive and user friendly that are appropriate in terms of content and language, so that it can be used in learning.

scholarly journals A Data Dictionary Approach To Meeting User Requests For Accounting Information

1999 ◽  
Vol 3 (1) ◽  
pp. 53-60
Author(s):  
Kristi Yuthas ◽  
Dennis F. Togo
Keyword(s):  
Large Scale ◽  
Accounting Information ◽  
User Involvement ◽  
Massive Data ◽  
Data Dictionary ◽  
Large Scale Data ◽  
User Access ◽  
Increasing Demand ◽  
User Friendly ◽  
Scale Data

In this era of massive data accumulation, dynamic development of large-scale data-bases and interfaces intended to be user-friendly, there is still an increasing demand on analysts as actual user access to databases is still not a common practice. A data dictionary approach, that includes providing users with a list of relevant data items within the database, can expedite the analysis of information requirements and the development of user-requested information systems. Furthermore, this approach enhances user involvement and reduces the demands on the analysts for systems devel-opment projects.

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