Results 51 to 60 of about 3,956 (194)

Geographic provenance and environmental growing conditions as factors influencing phytochemical composition of Arabica green coffee beans

open access: yesPlant Biology, Volume 28, Issue 2, Page 520-534, March 2026.
Growth environment strongly influences green coffee bean biochemistry, linking phytochemical composition to adaptation under abiotic stress. Abstract This study explores how bioactive compounds in green coffee beans (Coffea arabica L.) vary across different geographic regions, addressing the key question of how environmental factors shape coffee ...
I. Pettazzoni   +6 more
wiley   +1 more source

Predicting the fracture forming limit of 5754-O aluminum alloy by finite element simulation

open access: yesMaterials Research Express
Aluminum alloy has the advantages of low specific gravity, easy processing and good welding performance, so it is widely used on automobiles to achieve lightweighting.
Bin Yan   +3 more
doaj   +1 more source

Experimental Material Characterization and Formability studies on Aluminium Alloy (AA 8011) [PDF]

open access: yesE3S Web of Conferences
Operations for sheet metal shaping are essential to the production of many different kinds of goods. But there is still a problem with plastic fragility in this industry, which frequently results in faulty goods.
Ratna Babu Kuraku   +3 more
doaj   +1 more source

Epidemiological and awareness study of tuberculosis in Batu Pahat, Johor, Malaysia [PDF]

open access: yes, 2014
Tuberculosis (TB) remains one of the serious infectious diseases and has been characterized worldwide as an epidemic by World Health Organization (WHO). TB is still a public health problem in Malaysia.
Sanusi, Shuaibu Babaji
core  

Development of Stress-Based Forming Limit Curves for Predicting Crack Occurred during Deformation of UHSS DP980’s Parts [PDF]

open access: yes
Unless the strain-based forming limit diagram (e-FLD) is a useful tool in failure prediction for sheet metal, the complex shape can lead to a non-linear strain history, which e-FLD cannot adequately describe.
Suranuntchai, Surasak   +1 more
core   +2 more sources

Distinct Roles of Dopamine and Noradrenaline in Physical Fatigue

open access: yesEuropean Journal of Sport Science, Volume 26, Issue 2, February 2026.
ABSTRACT This triple‐blinded randomized crossover study investigated the roles of dopamine (DA) and noradrenaline (NA) in regulating exercise performance and fatigue using acute pharmacological manipulation. Eighteen healthy adults (9 males and 9 females; mean age = 23.4 ± 2.2 years) completed three experimental conditions.
Y. Laurisa Arenales Arauz   +8 more
wiley   +1 more source

Evaluation of formability and fracture of pure titanium in incremental sheet forming [PDF]

open access: yes, 2017
A forming limit diagram (FLD) is commonly used as a useful means for characterizing the formability of sheet metal forming processes. In this study, the Nakajima test was used to construct the forming limit curve at necking (FLCN) and fracture (FLCF ...
Gatea, Shakir   +3 more
core   +2 more sources

Apparatus Design and Finite Element Modeling for Controlled‐Speed Nakazima Experiments

open access: yesEngineering Reports, Volume 8, Issue 2, February 2026.
This study has two primary aims: first, to design a scaled device with deformable tooling components that can conduct Nakazima experiments with a rotating tool, and second, to develop a 3D Finite Element model for scaled Nakazima‐test simulation considering deformable tooling components.
Radouane Benmessaoud
wiley   +1 more source

Forming limit diagram of an ultra-thin commercially pure titanium sheet: Combined experimental–numerical approach

open access: yesJournal of Materials Research and Technology
This study presents a methodology for determining the forming limit diagram (FLD) of an ultra-thin (0.1 mm) commercially pure titanium (CP–Ti) sheet developed for use in metallic bipolar plates for fuel cells.
Kyung Mun Min   +5 more
doaj   +1 more source

Optimization of Segmented Blank Holder Shape and Its Variable Blank Holder Gap in Deep-Drawing Process

open access: yesJournal of Advanced Mechanical Design, Systems, and Manufacturing, 2012
Optimum segmented blank holder shape and its variable blank holder gaps (VBHGs) are determined by a sequential approximate optimization (SAO) with radial basis function network. In deep drawing, wrinkling and tearing of blank sheet are major defects. The
Jirasak SRIRAT   +2 more
doaj   +1 more source

Home - About - Disclaimer - Privacy