Results 21 to 30 of about 10,054,692 (312)

Changes in Time Preference Caused by the COVID-19 Pandemic

open access: yesEast Asian Economic Review, 2023
This paper investigates the relationship between the spread of COVID-19 and time preference. In contrast to previous studies that compared time preferences before and during the pandemic, this study estimates time preferences during the COVID-19 period ...
Inyong Shin
doaj   +1 more source

Does Social Capital Promote Garbage Classification? Evidence From China

open access: yesSAGE Open, 2021
A new round of garbage classification campaign is carrying out in China. Using Chinese General Social Survey (CGSS) Data in 2013, the study focuses on the influence mechanism of social capital on garbage classification in China and the difference between
Mingwei Liu, Qingxiang Feng
doaj   +1 more source

Effect of Margin Designs on the Marginal Adaptation of Zirconia Copings

open access: yesActa Stomatologica Croatica, 2017
The aim of this in vitro study was to investigate the effect of Shoulder versus Chamfer margin design on the marginal adaptation of zirconia (Zr) copings.40 extracted molar teeth were mounted in resin and prepared for zirconia crowns with two margin preparation designs (20=Shoulder and 20=Chamfer).
Syed Rashid Habib   +5 more
openaire   +3 more sources

Marginal Adaptation of Implant Prostheses Fabricated by Different Materials in Excessive Crown Height Space Before and After Veneering

open access: yesFrontiers in Dentistry, 2021
Objectives: This study aimed to investigate the marginal adaptation of implant-supported three-unit fixed restorations fabricated in excessive crown height by various frameworks namely zirconia, nickel-chromium (Ni-Cr) alloy, and Polyetheretherketone ...
Safoura Ghodsi   +3 more
doaj   +1 more source

Monowave and polywave light-curing of bulk-fill resin composites: degree of conversion and marginal adaptation following thermomechanical aging

open access: yesBiomaterial Investigations in Dentistry, 2021
Aim: This study aimed to evaluate the effect of polymerization with either a monowave (MW) or a polywave (PW) light-curing unit (LCU) on the degree of conversion (DC) and marginal adaptation following thermomechanical aging of an ormocer bulk-fill resin ...
Sheila Celia Mondragón Contreras   +4 more
doaj   +1 more source

Three-Dimensional Time-Series Monitoring of Maize Canopy Structure Using Rail-Driven Plant Phenotyping Platform in Field

open access: yesAgriculture
The spatial and temporal dynamics of crop canopy structure are influenced by cultivar, environment, and crop management practices. However, continuous and automatic monitoring of crop canopy structure is still challenging.
Hanyu Ma   +8 more
doaj   +1 more source

Ways to improve the efficiency of clean energy utilization: Does digitalization matter?

open access: yesEnergy Strategy Reviews, 2023
Efficient utilization of clean energy is iminent for achieving the ambitious “dual-carbon” goal, digitalization provides favorable conditions for decarbonzation.
Xiaoli Hao, Yuhong Li, Haitao Wu
doaj   +1 more source

Spatial Differentiation in the Contribution of Innovation Influencing Factors: An Empirical Study in Nanjing from the Perspective of Nonlinear Relationships

open access: yesBuildings
The agglomeration characteristics of innovation spaces reflect the intrinsic mechanisms of regional resource integration and collaborative innovation.
Chengyu Wang, Renchao Luo, Lingchao Zhou
doaj   +1 more source

Analysis of Factors Influencing the Vehicle Damage Level in Fatal Truck-Related Accidents and Differences in Rural and Urban Areas

open access: yesPromet (Zagreb), 2016
Accidents involving large trucks very often end up with deadly consequences. Innocent people getting killed are acknowledged globally as one of the traffic safety greatest problems and challenges.
Li Linchao, Tomislav Fratrović
doaj   +1 more source

Solid Pseudopapillary Neoplasm of the Pancreas in Children and Adolescents: Expert Recommendations

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Solid pseudopapillary neoplasm of the pancreas (SPN) is a rare low‐grade malignant exocrine pancreatic tumor, mostly discovered during the second decade of life in females, with a very good prognosis, provided microscopically complete surgical excision is achieved.
Sabine Irtan   +18 more
wiley   +1 more source

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