Results 61 to 70 of about 10,773 (265)

Development of a Mechanically Regenerating Desublimator for Freeze‐Drying Systems in the Food Industry

Chemie Ingenieur Technik, EarlyView.
Thermal defrosting limits desublimator efficiency in freeze‐drying. This review and case study compares thermal versus mechanical regeneration, links frost properties and external heat transfer to energy demand, and summarizes pilot‐scale scraping results enabling single‐unit, continuous lyophilization.
Moritz Krummenacher, Mirko Kleingries, Edgar Zimmer, Roman Blättler   +3 more
wiley   +1 more source

Evaluation of stress distribution of a new restorative material and composite resin: a finite-element analysis study

Biotechnology & Biotechnological Equipment, 2017
Glass carbomer cement is a new dental material developed from the traditional glass ionomer cements. It has better mechanical and chemical features when compared to the conventional glass ionomer cements.
Mehmet Sinan Doğan, Fatih Demirci, Elif Eratilla, Veysel Eratilla, Yasemin Yavuz, Mehmet Unal   +5 more
doaj   +1 more source

Cytotoxicity and microbiological behavior of universal resin composite cements

Dental Materials
To investigate the cytotoxicity on human dental pulp cells (HDPCs) and Streptococcus mutans (S.mutans) biofilm formation on universal resin composite cements (UCs).Three UCs (RelyX Universal, 3 M Oral Care - RXU; Panavia SA Cement Universal, Kuraray Noritake - PSAU; SoloCem, Coltene - SCM) and one 'gold-standard' multi-step cement (Panavia V5, Kuraray ...
Josic, Uros, Teti, Gabriella, Ionescu, Andrei, Maravic, Tatjana, Mazzitelli, Claudia, Cokic, Stevan, Van Meerbeek, Bart, Falconi, Mirella, Brambilla, Eugenio, Mazzoni, Annalisa, Breschi, Lorenzo   +10 more
openaire   +4 more sources

Evaluation of the flexural strength of dual‐cure composite resin cements

Journal of Biomedical Materials Research Part B: Applied Biomaterials, 2013
AbstractThe aim of this study was to evaluate of flexural strength of some adhesive resin cements. Three dual‐cure composite resin cements (Nexus 3; Variolink II, Panavia F) were prepared. The manufacturer's mixing directions for the cements were followed. Adhesive resin cement was mixed, placed in the rectangular portion of the mold. Fifteen specimens
Alkurt, Murat, Yanikoglu, Nuran, Duymus, Zeynep Yesil   +2 more
openaire   +3 more sources

Review and prospects of shear test of bolted rock joints

Deep Underground Science and Engineering, EarlyView.
The laboratory shear test equipment, test method, and numerical simulation of bolted rock joints were summarized. The shortcomings and limitations of the current research were analyzed, and the research prospects were proposed. Abstract Rock bolting is a critical approach in geotechnical engineering for supporting weak rocks.
Shulin Ren, Fan Yang, Manchao He, Yong Yuan, Zhigang Tao   +4 more
wiley   +1 more source

Surface hydration‐induced damage in tight oil‐bearing sandy conglomerate reservoirs

Deep Underground Science and Engineering, EarlyView.
A series of techniques such as X‐ray diffraction, scanning electron microscopy, energy‐dispersive spectroscopy, conductivity tests, and infrared thermal imaging were used. The key findings are the identification of a two‐stage surface hydration process and the elucidation of the effects of various minerals and elements on the hydration process ...
Anbang Zhao, Shuheng Du, Yuan Zhang, Jinghong Hu, Bo Zhou, Yun Wei   +5 more
wiley   +1 more source

Comparative Evaluation of Microhardness and Degree of Polymerization of Dual-cure Resin Cement on Luting Composite Resin Endocrowns of 5.5mm and 7.5mm Thicknesses: An in-vitro Study [PDF]

International Journal of Scientific Research in Dental and Medical Sciences
Background and aim: The aim of this in vitro study was to assess and compare the microhardness and degree of polymerization of dual-cure resin cement used for luting composite resin Endocrowns using the Vickers microhardness test and Fourier Transform ...
Prakruthi Nallikatte, Shony Mohan, Harsha Karunakaran, Ravichandran Rajagopal, Vivek Nair, Amal Shajahan   +5 more
doaj   +1 more source

Modeling and experimental validation of bolt–grout bond–slip behavior for deep underground excavation support

Deep Underground Science and Engineering, EarlyView.
A novel shear‐lag model, validated by pull‐out tests, incorporates a constant bond stress stage to predict the complete load–displacement response of grouted rock bolts, providing a new tool for optimizing anchorage length and material toughness in deep underground engineering. Abstract The stability of rock masses in deep underground excavations, such
Wenhui Bian, Xiaohui He, Kexue Wang, Yufei Wu, Guoxin Wang, Shaochen Zhang, Jun Yang   +6 more
wiley   +1 more source

Carbon emission assessment of tunnel infrastructures: From construction to operation

Deep Underground Science and Engineering, EarlyView.
This study develops a lifecycle carbon accounting framework for tunnel infrastructures, covering design, construction, operation, maintenance, and dismantling. Applied to a subsea tunnel case, the framework reveals the carbon emission distribution among four typical tunnel types and highlights potential carbon offset methods for low‐carbon tunnel ...
Luyuan Long, Wout Broere, Xuehui Zhang, Tian Xia, Richard de Nijs   +4 more
wiley   +1 more source

Which Zirconia Surface-cleaning Strategy Improves Adhesion of Resin Composite Cement after Saliva Contamination? A Systematic Review and Meta-Analysis. [PDF]

J Adhes Dent, 2022
Silva NRD, Araújo GM, Vila-Nova TEL, Bezerra MGPG, Calderon PDS, Özcan M, Souza ROAE.   +6 more
europepmc   +1 more source