Results 31 to 40 of about 1,374 (157)

From Flybys to Sample Return: A Review of Space Probes and Robotic Sampling Technologies for Small Bodies

Journal of Field Robotics, EarlyView.
ABSTRACT As a crucial puzzle piece of deep space exploration, exploring small bodies can provide significant scientific insights and valuable mineral resources. Unlike missions to the Moon and Mars, small‐body missions pose distinct technical challenges, including communication delays, weak gravity, and uncertain environments. This paper reviews a full
Xin Zhang, Hao Zhou, Dalin Zhou, Zhaojie Ju   +3 more
wiley   +1 more source

Investigation about Load Capacity of Nylon Gears, when Tooth Surface Finishing of Mating Steel Gears is different : 2nd Report; Abrasion of Nylon Gear Meshing with Ground Steel Gear

Bulletin of JSME, 1984
In the eariler report, it was investigated basically how the surface roughness of a steel cylinder influenced the abrasion of a nylon cylinder. In this report, steel gears were ground to several degrees of roughness by O° teeth ground method of MAAG.
openaire   +2 more sources

Fishing net waste management: quantification and valorization

Frontiers in Marine Science
Abandoned, lost or discarded fishing gear harms marine ecosystems by releasing microplastic waste from synthetic materials, reducing biodiversity, spreading invasive species and causing long-term damage to fragile habitats.
Beate Zlaugotne, Jelena Pubule, Julija Gusca   +2 more
doaj   +1 more source

Identification of used components of purse seine in Pekalongan City, Central Java, Indonesia [PDF]

BIO Web of Conferences
Collecting and trading of used components of purse seine in Pekalongan, Central Java, Indonesia, will minimize the impact from pollution caused by dumped fishing gear.
Maya Evi Sis, Fauni Arini Mayang, Sa’diyah Yakiyatul, Sajiwo Philipus Bekti, Hapsari Trisnani Dwi, Prihantoko Kukuh Eko, Pebruwanti Neneng, Kodiran Taryono   +7 more
doaj   +1 more source

What's Inside the Green Bag? An Analysis of the Eco‐Design Options and a Visual Tool for the Development of Sustainable Fashion Accessories

Sustainable Development, EarlyView.
ABSTRACT Integrating eco‐design practices in product development from the start is essential for fashion accessories like bags and backpacks, which involve complex manufacturing, diverse materials, and strong socio‐cultural meanings. Building on this premise and drawing from the Lifecycle Design Strategy Wheel, this study aims to characterize the eco ...
Francesco Paolo Lagrasta, Rosa Maria Dangelico, Pierpaolo Pontrandolfo   +2 more
wiley   +1 more source

Mechanical Properties and Stress Analysis of Natural Fiber Reinforced Polymer Composite Spur Gear

Журнал інженерних наук
This research study investigates the mechanical properties of polymer composites reinforced with natural fibers, specifically Palmyra palm leaf stalk fiber (PPLSF) and Palmyra palm primary leaf stalk fiber (PPFLSF). Tensile, flexural, and impact strength
M. Jayaraj, S. K. Ashok, Rama Thirumurugan, Dharmalingam Shanmugam, M. Mahendran   +4 more
doaj   +1 more source

Reconciling Granular Hydrogel Microstructure and Mechanics via a Temporary Thermo‐Responsive and Cell‐Invadable Matrix

Small, EarlyView.
Thermo‐responsive granular hydrogels (TRGHs), composed of microparticles and an interstitial matrix, exhibit thermo‐responsive mechanical properties and allow cell infiltration. This system effectively addresses the conventional compromise between mechanical strength and porosity observed in granular hydrogels.
Jun Kim, Soyeon Kwon, Taimoor H. Qazi
wiley   +1 more source

Fishing Activity Affected Odontocete Cetacean Distribution in a Marine Protected Area in the East China Sea

Integrative Zoology, EarlyView.
Spatiotemporal distribution of odontocete cetaceans within China's Jiushan Archipelago National Nature Reserve was investigated. Fishing vessels significantly reduced both cetacean acoustic detections and feeding activity, whereas gillnets selectively suppressed cetacean feeding behavior without affecting overall cetacean detection rates.
Yifan Liu, Zitong Zhou, Peng Ding, Yu Pan, Zhi Yang, Haochi Wang, Fangqiao Wang, Tianshi Wei, Pengxiang Duan, Tomonari Akamatsu, Zhitao Wang   +10 more
wiley   +1 more source

Gear Finishing with a Nylon Lap. A Lapping Machine and Lapped Surfaces.

TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series C, 1996
This study aims at developing a technology that the tooth flanks of a hardened gear can be mirror-finished in a short time. We propose a simple gear finishing method using a helical gear made of nylon for the lap. This method is a lapping in which the work gear is meshed with a helical gear set at a helical angle. analogous to shaving.
NAKAE, Masahiko, HIDAKA, Kazunori, ARIURA, Yasutsune   +2 more
openaire   +2 more sources

DeepZoo: A cost‐effective and modular sampler for ecological studies in the deep ocean

Methods in Ecology and Evolution, EarlyView.
Abstract Understanding the structure and dynamics of deep‐ocean communities requires effective sampling of pelagic organisms in near‐bottom waters. These dispersive organisms contribute to biodiversity, connectivity and ecosystem recovery. Yet, current sampling methods remain constrained by size, cost, and depth, leaving key questions unanswered in ...
Johanna N. J. Weston, Casey Machado, Brian Kelly, Benjamin S. Weiss, Taylor P. Heyl, Daniel Lauretta, Lauren S. Mullineaux, Kirstin S. Meyer‐Kaiser   +7 more
wiley   +1 more source