Plating, Brush, Nickel, Low Stress, Medium-Hardness Deposit

2011 ◽  
Author(s):  
Keyword(s):  
Medium Hardness

COPPER ALLOY No. 815

Alloy Digest ◽  
1977 ◽  
Vol 26 (5) ◽  
Keyword(s):  
Thermal Conductivity ◽  
Electrical Conductivity ◽  
Corrosion Resistance ◽  
Physical Properties ◽  
Copper Alloy ◽  
Heat Treating ◽  
Chromium Alloy ◽  
High Electrical Conductivity ◽  
Medium Hardness ◽  
Hardened Condition

Abstract Copper Alloy No. 815 is an age-hardenable cast copper-chromium alloy. It is characterized by high electrical and thermal conductivities combined with medium hardness and strength in the age-hardened condition. It is used for components requiring high electrical conductivity or high thermal conductivity. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties. It also includes information on corrosion resistance as well as casting, heat treating, machining, and joining. Filing Code: Cu-332. Producer or source: Copper alloy foundries.

Novel Biobased Polyamide Thermoplastic Elastomer with Medium Hardness

2021 ◽  
pp. 2100218
Author(s):  
Yeyen Nurhamiyah ◽  
Gavin Irvine ◽  
Efrosyni Themistou ◽  
Biqiong Chen
Keyword(s):  
Thermoplastic Elastomer ◽  
Medium Hardness

Sellaphora gologonica sp. nov. (Bacillariophyta, Sellaphoraceae), a new diatom species from a Mediterranean karst spring (Sardinia, Italy)

Phytotaxa ◽  
2018 ◽  
Vol 356 (2) ◽  
pp. 145 ◽  
Author(s):  
GIUSEPPINA G. LAI ◽  
LUC ECTOR ◽  
ANTONELLA LUGLIÈ ◽  
NICOLA SECHI ◽  
CARLOS E. WETZEL
Keyword(s):  
Diatom Species ◽  
Karst Spring ◽  
Electron Microscopic ◽  
Scanning Electron Microscopic ◽  
Freshwater Habitats ◽  
Spring System ◽  
Scanning Electron ◽  
Medium Hardness

A new epilithic Sellaphora (Bacillariophyceae) species from a karst spring of Sardinia is described based on light and scanning electron microscopic observations. Sellaphora gologonica sp. nov. shares similarities with small-celled Sellaphora previously described from Europe and particularly with S. atomoides, S. hafnearae and S. seminulum. Sellaphora gologonica seems to be related to S. seminulum based on the striae patterns and valve ultrastructure, as well as the sinuous raphe system. The main differences between S. gologonica and S. seminulum lies in its valve shape (small, elliptic to oval), not presenting capitated nor protracted apices, as in the later taxon. Sellaphora gologonica was discovered in freshwater habitats with slightly alkaline and oligotrophic waters presenting medium hardness and mineralization, at the smaller water emergence of karst spring system Su Gologone (Sardinia).

An Experimental Low-Cost Ultrasonic Phacoemulsifier—A Prototype Test

2015 ◽  
Vol 9 (1) ◽  
Author(s):  
Branislav Tomasevic ◽  
Srdjan Glisovic ◽  
Ruzica Jankovic-Tomasevic
Keyword(s):  
Animal Studies ◽  
Heat Dissipation ◽  
Low Cost ◽  
Specific Power ◽  
Surgical Trauma ◽  
In Vitro Experiments ◽  
Original Design ◽  
Prototype Test ◽  
Medium Hardness

The structure and the features of a low-cost ultrasonic phacoemulsification prototype device are described in this paper. The phacoemulsifier was designed to comply with the techniques of modern cataract surgery. The functionality and reliability of the device were confirmed through in vitro experiments and animal studies. The device was designed to minimize surgical trauma: Reduced heat dissipation was achieved by specific power modulation, while the original design of aspiration control assured a reduced surge effect. In order to assess the suitability of the device, phacoemulsification was performed on rabbit eyes with nuclei of medium hardness. Their recovery was closely observed and only mild inflammation caused by surgical trauma was noticed. The device performed well in terms of reliability, ergonomics, and controllability throughout the experiments.

scholarly journals Oral Hygiene and Nutrition Habits of Young People in Greece Aged 18 to 25 and Review of the Literature

2014 ◽  
Vol 18 (3) ◽  
pp. 133-143
Author(s):  
Georgios S Chatzopoulos ◽  
Vasiliki P. Koidou
Keyword(s):  
Young People ◽  
Oral Hygiene ◽  
Review Of The Literature ◽  
Chi Square ◽  
Once Daily ◽  
Significant Difference ◽  
Chi Square Test ◽  
Males And Females ◽  
Nutrition Habits ◽  
Medium Hardness

SUMMARYPurpose: The aim of this paper is to document the oral hygiene and nutrition habits of young people (aged 18 to 25) in Greece.Material and Methods: In a random sample of 100 people in Greece aged 18 to 25, a questionnaire including 23 questions (4 demographical and 19 other) was given. The frequency, the usual reason for visiting the dentist, the frequency of brushing, the type of toothbrush and the criteria for choosing toothbrush and toothpaste were searched. The nutrition habits were recorded as frequency in receiving sugar or no sugar meals during the day. The statistical analysis included frequencies and the use of chi-square test for interrelation with the demographical questions.Results: 72% of the sample visits the dentist at least once a year, while the reason for visiting was prevention in 69%. 85% brushes at least twice a day, and the same percentage uses medium hardness toothbrush. The choice of the toothpaste is based on flavour and fragrance in 25%. The frequency of receiving sugar meals was recorded as 45% once daily and 43% in 2 or 3 times daily (p<0.05 between smokers and non smokers). 78% of the young people receives less than 5 meals and snacks per day. There was no statistically significant difference between different available monthly budgets in the sample for the oral hygiene and nutrition habits.Conclusion: More than 1/3 of young people in Greece aged 18 to 25 visits the dentist at least once yearly for prevention and uses medium hardness toothbrush. The frequency of sugar consumption was significantly higher in smokers when compared to non smokers. Statistically significant differences were not observed between males and females except for the frequency in brushing (p<0.05). A review of the literature was performed for issues related to this project.

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