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1000 tulosta hakusanalla W. P. Ferguson

Electroless Ni-W-P/MoS2 ternary composite coatings Process, Properties and Technological Applications

Electroless Ni-W-P/MoS2 ternary composite coatings Process, Properties and Technological Applications

Ranganatha S

Lap Lambert Academic Publishing
2023
pokkari
The electroless Ni-W-P ternary alloy and its MoS2 composite films were successfully obtained on low-carbon steel by the electroless plating technique. The sodium tungstate concentration in the bath was varied to obtain Ni-W-P deposits containing various W and P contents. Ni-W-P-MoS2 composite was obtained with a suitable concentration of sodium tungstate in the plating bath. These deposits were characterized via x-ray diffraction (XRD), scanning electron microscopy and energy dispersive XRD spectroscopy studies. The corrosion behavior was investigated via potentiodynamic polarization and electrochemical impedance spectroscopy studies in a 3.5 wt% NaCl solution. An increase in codeposition of the alloying metal tungsten changed the structure and morphology of the deposits and enhanced the corrosion resistance. Mechanical properties such as microhardness and friction coefficients were evaluated. Ni-W-P deposits with increasing amounts of tungsten metal were found to possess higher friction coefficients. The microhardness was greatly improved with increasing codeposition of tungsten metal in the alloy.
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Propozycja wdrozenia P+L w firmie zajmujacej sie obróbka metali

Propozycja wdrozenia P+L w firmie zajmujacej sie obróbka metali

Lucas Vinícius Reis; André Luiz Emmel Silva; Jorge André Ribas Moraes

Wydawnictwo Nasza Wiedza
2025
pokkari
Niniejsza książka proponuje wdrożenie Czystszej Produkcji w malej firmie z sektora metalowo-mechanicznego. Wykorzystując metodologię wdrażania opracowaną przez CNTL, gl wnego popularyzatora P+L w Brazylii, odnosi się do koncepcji zr wnoważonego rozwoju w sektorze, kt ry wymaga dużej uwagi ze względu na wysokie ryzyko zanieczyszczenia środowiska, jakie mogą powodowac jego odpady i produkty uboczne.
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P.W. Lund og Knokkelhulerne i Lagoa Santa

P.W. Lund og Knokkelhulerne i Lagoa Santa

Birgitte Holten; Michael Sterll

Statens Naturhistoriske Museum
2010
sidottu
Om naturforskeren og palæontologen P.W. Lund (1801-1880), der i 1832 rejste til Brasilien for at udforske kalkstenshulerne ved Lagoa Santa, og hans mange opdagelser, der førte til nye naturvidenskabelige forklaringer på Jordens, naturens og menneskets opståen og udvikling
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Postęp w stomatologii maloinwazyjnej

Postęp w stomatologii maloinwazyjnej

Palak Gangwar

Wydawnictwo Nasza Wiedza
2025
nidottu
Stomatologia minimalnie inwazyjna (MID) przeszla znaczący postęp, przeksztalcając tradycyjną opiekę stomatologiczną w bardziej konserwatywne, przyjazne dla pacjenta podejście. Kluczowe innowacje obejmują wczesne narzędzia diagnostyczne, takie jak fluorescencja laserowa i optyczna koherentna tomografia, kt re wykrywają pr chnicę przed kawitacją. Techniki takie jak chemo-mechaniczne usuwanie pr chnicy, abrazja powietrzna i infiltracja żywicą pozwalają na selektywne usuwanie pr chnicy przy jednoczesnym zachowaniu zdrowej struktury zęba. Rozw j material w bioaktywnych, takich jak szklane wypelnienia hybrydowe i cementy na bazie krzemianu wapnia, wspomaga remineralizację i gojenie miazgi. Stomatologia cyfrowa, w tym skanery wewnątrzustne i systemy CAD/CAM, wspiera precyzyjne uzupelnienia protetyczne. Og lnie rzecz biorąc, MID kladzie nacisk na profilaktykę, biomimetyczną naprawę i dlugoterminową ochronę zęb w.
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Basic College Math with P.O.W.E.R. Learning with Aleks 360 Access Card

Basic College Math with P.O.W.E.R. Learning with Aleks 360 Access Card

Sherri Messersmith

McGraw-Hill Companies
2014
nidottu
Assessment and Learning in Knowledge Spaces is a Web-based, artificially intelligent assessment and learning system. ALEKS uses adaptive questioning to quickly and accurately determine exactly what a student knows and doesn't know in a course. ALEKS then instructs the student on the topics she is most ready to learn. As a student works through a course, ALEKS periodically reassesses the student to ensure that topics learned are also retained. ALEKS courses are very complete in their topic coverage and ALEKS avoids multiple-choice questions. A student who shows a high level of mastery of an ALEKS course will be successful in the actual course she is taking.
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P.O.W.E.R. Learning: Foundations of Student Success

P.O.W.E.R. Learning: Foundations of Student Success

Robert Feldman

McGraw-Hill Professional
2016
nidottu
P.O.W.E.R. Learning is the only research-based student success series with a unifying system for critical thinking and problem solving. P.O.W.E.R. Learning: Foundations of Student Success utilizes this P.O.W.E.R. framework to maximize students' potential for success in college and life addressing the diverse, 2-year student population by providing direct, practical solutions to the challenges that students face as they navigate college and prepare for their careers. Using the scientifically-based, yet simple and class-tested principles of the P.O.W.E.R. (Prepare, Organize, Work, Evaluate, and Rethink) system, students gain a sense of mastery and achievement as they move through the text; with the growth of their confidence comes the increased intellectual enthusiasm and personal discipline needed for them to excel.
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P.O.W.: A Sailor's Story

P.O.W.: A Sailor's Story

Ralph C. Poness

Ralph J Poness
2012
nidottu
"When Japan unleashed its firestorm on Pearl Harbor, surprise, anger, and fear beyond words gripped the nation. Reflecting on this, I realize how wrong so many people were, including enlisted men like me and those in power." In this historical, political, analytical, and deeply personal story of a disgracefully blundering hierarchy, inadequate weaponry, lack of even rudimentary supplies, and official incompetence and miscalculation at every turn, Poness recounts the events that led up to being taken as a prisoner of the Japanese and of his harrowing years as a P.O.W. The fighting men distinguished themselves, they fought and sacrificed and died. Their nation profoundly failed them.
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