Adhesion of Polymers to Synthetic Diamond Films

1995 ◽  
Vol 383 ◽  
Author(s):  
Earl W. Stromberg ◽  
Michael D. Drory
Keyword(s):  
Contact Angle ◽  
Synthetic Diamond ◽  
Diamond Films ◽  
Cvd Diamond ◽  
The Other ◽  
Diamond Surface ◽  
Coupling Agents ◽  
Preliminary Study ◽  
Better Than

ABSTRACTA preliminary study of the adhesion of polymers to diamond substrates was conducted by examining the wetting characteristics of coupling agents to diamond. The contact angle between several commercial liquid coupling agents and a CVD diamond surface was measured. A silane, Z-6026, was found to wet the diamond surface. Several other coupling agents, including a titanate and an organometallic blend, wet the diamond surface significantly better than most of the other materials in this survey. It was found that water did not wet the diamond.

Fracture of Thin Synthetic Diamond Films

1996 ◽  
Vol 436 ◽  
Author(s):  
M. D. Drory
Keyword(s):  
Synthetic Diamond ◽  
Steel Substrate ◽  
Diamond Films ◽  
Cvd Diamond ◽  
Diamond Growth ◽  
Steel Alloy ◽  
Diamond Coating ◽  
Diamond Coatings ◽  
Growth Environment ◽  
Substrate Hardness

AbstractLarge residual stresses in diamond coatings may result in film failure through splitting, delamination and substrate failure. In addition, the CVD diamond growth environment may degrade the substrate mechanical properties. These issues are examined for diamond-coating of a tool steel alloy. Diamond growth was achieved on the steel substrate with the use of a titanium interlayer. Embrittlement of the Ti interlayer was not evident, however the substrate hardness was severely degraded.

scholarly journals Indigenous methods for assessment of important aspects in undergraduates on pharmacology and therapeutics: a preliminary study

2017 ◽  
Vol 6 (9) ◽  
pp. 2210
Author(s):  
Naresh D. Balani ◽  
Namrata U. Mahadkar ◽  
Ritesh C. Sonawane
Keyword(s):  
Drug Therapy ◽  
Active Learning ◽  
Teaching And Learning ◽  
Cognitive Structure ◽  
The Other ◽  
Internal Assessment ◽  
Individualized Drug Therapy ◽  
Preliminary Study ◽  
Indigenous Methods ◽  
Better Than

Background: In pharmacology and therapeutics tutorial in current times is being disliked by most undergraduates. On the other hand, the important exercises related to analytical skill development, problem based exercise, rational use of medicine and individualized drug therapy need to be emphasize more in UG teaching and learning techniques.Methods: In the form of active learning we have framed CME pattern of conducting some important exercises including four above mentioned to facilitate the ability to think, feel or do the task which may be acceptable to the students better than or equivalent to tutorials.Results: We observed that 2 out of 8 willing participants scored higher than others in CME activity as well as terminal exams the other 2 scored borderline higher in CME activity than their score in terminal exams. Another 4 scored better in the terminal examinations as compared to CME activity.4 out of 8 i.e. 50% participants have shown acceptability as well as better performance in these exercises.Conclusions: All of these exercises are not in the curriculum/syllabus and there is no incentive of internal assessment on these. If these exercises are made mandatory, as it is the need of the hour, these can benefit the learner possibly by the way of change in their cognitive structure, keeping tutorials intact or removing them from syllabus.

scholarly journals Temperature dependence of stress in CVD diamond films studied by Raman spectroscopy

2015 ◽  
Vol 33 (3) ◽  
pp. 620-626 ◽  
Author(s):  
Anna Dychalska ◽  
Kazimierz Fabisiak ◽  
Kazimierz Paprocki ◽  
Alina Dudkowiak ◽  
Mirosław Szybowicz
Keyword(s):  
Residual Stress ◽  
Thermal Stress ◽  
Temperature Dependence ◽  
Stress Component ◽  
Diamond Films ◽  
Chemical Vapor ◽  
Cvd Diamond ◽  
Intrinsic Stress ◽  
Diamond Surface ◽  
Raman Shift

Abstract Evolution of residual stress and its components with increasing temperature in chemical vapor deposited (CVD) diamond films has a crucial impact on their high temperature applications. In this work we investigated temperature dependence of stress in CVD diamond film deposited on Si(100) substrate in the temperature range of 30 °C to 480 °C by Raman mapping measurement. Raman shift of the characteristic diamond band peaked at 1332 cm-1 was studied to evaluate the residual stress distribution at the diamond surface. A new approach was applied to calculate thermal stress evolution with increasing tempera­ture by using two commonly known equations. Comparison of the residts obtained from the two methods was presented. The intrinsic stress component was calculated from the difference between average values of residual and thermal stress and then its temperature dependence was discussed.

Selective Metallization of CVD Diamond Films

1992 ◽  
Vol 260 ◽  
Author(s):  
J. M. Calvert ◽  
P. E. Pehrsson ◽  
C. S. Dulcey ◽  
M. C. Peckerar
Keyword(s):  
Ultrathin Films ◽  
Diamond Films ◽  
Peel Test ◽  
Cvd Diamond ◽  
Diamond Surface ◽  
Processing Conditions ◽  
Diamond Substrate ◽  
Low Temperature Processing ◽  
Modified Surfaces ◽  
Oxidized Diamond

ABSTRACTA process has been developed for the deposition of patterned adherent metal on diamond substrates using low temperature processing conditions. CVD diamond films on Si wafers were oxidized with an RFO2 plasma and subsequently functionalized by attachment of self-assembled ultrathin films (UTFs) to the oxidized diamond surface. The UTFs were exposed to patterned deep UV radiation, and selectively metallized by electroless (EL) deposition. EL Ni and Co patterns, with feature sizes to 20 μm linewidth have been produced. Oxidized and UTF-modified surfaces were characterized by surface spectroscopie and wettability techniques. The EL metal deposits on the diamond substrate passed the Scotch tape adhesion peel test.

scholarly journals Preliminary data on attractiveness of phenylacetaldehyde-based lures on economically important plant bug pests (Hemiptera: Miridae)

2021 ◽  
Vol 27 ◽  
pp. 87-94
Author(s):  
T. Szalárdi ◽  
A. Nagy ◽  
F. Oláh ◽  
M. Tóth ◽  
S. Koczor
Keyword(s):  
Preliminary Data ◽  
The Other ◽  
Potential Implication ◽  
Plant Volatile ◽  
Lygus Rugulipennis ◽  
Adelphocoris Lineolatus ◽  
Baited Traps ◽  
Males And Females ◽  
Preliminary Study ◽  
Better Than

Several plant bug species (Miridae) are important pests of crops and vegetables, thus monitoring them is of essential importance for effective pest control. During the current, preliminary study synthetic plant volatile combinations were tested in field conditions in Hungary in alfalfa fields. Beside semiochemical baited traps, sweep-netting was also performed. In the experiments three plant bug species were found in higher numbers: Adelphocoris lineolatus, Lygus rugulipennis and L. pratensis. As a novel, interesting finding L. pratensis was attracted to phenylacetaldehyde baited traps. For all species, both males and females were trapped in all combinations. Sweep-netting and semiochemical baited traps showed different efficacy in case of the three species, as sweep-netting catches were highly biased for A. lineolatus, which indicates the higher efficacy of this method as compared to the tested semiochemical-baited traps. On the other hand, semiochemical baited showed better performance for L. rugulipennis and L. pratensis. For these species none of the tested combinations performed better than phenylacetaldehyde baited traps. The potential implication of results in view of monitoring are discussed.

Closing the GAP—A 5Å Scanning Microscope

1969 ◽  
Vol 27 ◽  
pp. 6-7
Author(s):  
A. V. Crewe
Keyword(s):  
Normal Form ◽  
The Other ◽  
Resolving Power ◽  
Scanning Microscope ◽  
Conventional Microscope ◽  
Other Hand ◽  
Closing The Gap ◽  
Thermal Sources ◽  
Better Than ◽  
Transmission Microscope

We have become accustomed to differentiating between the scanning microscope and the conventional transmission microscope according to the resolving power which the two instruments offer. The conventional microscope is capable of a point resolution of a few angstroms and line resolutions of periodic objects of about 1Å. On the other hand, the scanning microscope, in its normal form, is not ordinarily capable of a point resolution better than 100Å. Upon examining reasons for the 100Å limitation, it becomes clear that this is based more on tradition than reason, and in particular, it is a condition imposed upon the microscope by adherence to thermal sources of electrons.

MUNDANE MIRACLES IN AWADH. ENCOUNTERS WITH THE REVEALED AND THE HIDDEN

2020 ◽  
pp. 130-140
Author(s):  
Maxim B. Demchenko ◽  
Keyword(s):  
The Other ◽  
Local People ◽  
Natural Phenomena ◽  
Mughal Empire ◽  
The Public ◽  
British Raj ◽  
The Subject ◽  
Other World ◽  
Better Than

The sphere of the unknown, supernatural and miraculous is one of the most popular subjects for everyday discussions in Ayodhya – the last of the provinces of the Mughal Empire, which entered the British Raj in 1859, and in the distant past – the space of many legendary and mythological events. Mostly they concern encounters with inhabitants of the “other world” – spirits, ghosts, jinns as well as miraculous healings following magic rituals or meetings with the so-called saints of different religions (Hindu sadhus, Sufi dervishes),with incomprehensible and frightening natural phenomena. According to the author’s observations ideas of the unknown in Avadh are codified and structured in Avadh better than in other parts of India. Local people can clearly define if they witness a bhut or a jinn and whether the disease is caused by some witchcraft or other reasons. Perhaps that is due to the presence in the holy town of a persistent tradition of katha, the public presentation of plots from the Ramayana epic in both the narrative and poetic as well as performative forms. But are the events and phenomena in question a miracle for the Avadhvasis, residents of Ayodhya and its environs, or are they so commonplace that they do not surprise or fascinate? That exactly is the subject of the essay, written on the basis of materials collected by the author in Ayodhya during the period of 2010 – 2019. The author would like to express his appreciation to Mr. Alok Sharma (Faizabad) for his advice and cooperation.

Temperature Effects during Endodormancy Induction on Subsequent Anthesis and Growth of Peach Trees

HortScience ◽  
1998 ◽  
Vol 33 (3) ◽  
pp. 452c-452 ◽  
Author(s):  
Schuyler D. Seeley ◽  
Raymundo Rojas-Martinez ◽  
James Frisby
Keyword(s):  
Temperature Effects ◽  
Shoot Length ◽  
The Other ◽  
Nighttime Temperatures ◽  
Peach Trees ◽  
Better Than

Mature peach trees in pots were treated with nighttime temperatures of –3, 6, 12, and 18 °C for 16 h and a daytime temperature of 20 °C for 8 h until the leaves abscised in the colder treatments. The trees were then chilled at 6 °C for 40 to 70 days. Trees were removed from chilling at 40, 50, 60, and 70 days and placed in a 20 °C greenhouse under increasing daylength, spring conditions. Anthesis was faster and shoot length increased with longer chilling treatments. Trees exposed to –3 °C pretreatment flowered and grew best with 40 days of chilling. However, they did not flower faster or grow better than the other treatments with longer chilling times. There was no difference in flowering or growth between the 6 and 12 °C pretreatments. The 18 °C pretreatment resulted in slower flowering and very little growth after 40 and 50 days of chilling, but growth was comparable to other treatments after 70 days of chilling.

Nglyc: A Random Forest Method for Prediction of N-Glycosylation Sites in Eukaryotic Protein Sequence

2020 ◽  
Vol 27 (3) ◽  
pp. 178-186 ◽  
Author(s):  
Ganesan Pugalenthi ◽  
Varadharaju Nithya ◽  
Kuo-Chen Chou ◽  
Govindaraju Archunan
Keyword(s):  
Random Forest ◽  
Protein Sequence ◽  
Glycosylation Site ◽  
Computational Method ◽  
The Other ◽  
Eukaryotic Protein ◽  
Random Forest Method ◽  
Glycosylation Sites ◽  
Human And Mouse ◽  
Better Than

Background: N-Glycosylation is one of the most important post-translational mechanisms in eukaryotes. N-glycosylation predominantly occurs in N-X-[S/T] sequon where X is any amino acid other than proline. However, not all N-X-[S/T] sequons in proteins are glycosylated. Therefore, accurate prediction of N-glycosylation sites is essential to understand Nglycosylation mechanism. Objective: In this article, our motivation is to develop a computational method to predict Nglycosylation sites in eukaryotic protein sequences. Methods: In this article, we report a random forest method, Nglyc, to predict N-glycosylation site from protein sequence, using 315 sequence features. The method was trained using a dataset of 600 N-glycosylation sites and 600 non-glycosylation sites and tested on the dataset containing 295 Nglycosylation sites and 253 non-glycosylation sites. Nglyc prediction was compared with NetNGlyc, EnsembleGly and GPP methods. Further, the performance of Nglyc was evaluated using human and mouse N-glycosylation sites. Results: Nglyc method achieved an overall training accuracy of 0.8033 with all 315 features. Performance comparison with NetNGlyc, EnsembleGly and GPP methods shows that Nglyc performs better than the other methods with high sensitivity and specificity rate. Conclusion: Our method achieved an overall accuracy of 0.8248 with 0.8305 sensitivity and 0.8182 specificity. Comparison study shows that our method performs better than the other methods. Applicability and success of our method was further evaluated using human and mouse N-glycosylation sites. Nglyc method is freely available at https://github.com/bioinformaticsML/ Ngly.

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