Results 71 to 80 of about 11,677 (291)

Optimizing Urban Air Mobility: A Ground-Connected Approach to Select Optimal eVTOL Takeoff and Landing Sites for Short-Distance Intercity Travel

IEEE Open Journal of Vehicular Technology
The progression of low-carbon aviation policies and the maturation of electric vertical take-off and landing (eVTOL) technology have engendered considerable prospects for the advancement of short-haul intercity and intra-city transportation systems.
Yantao Wang, Jiashuai Li, Yujie Yuan, Chun Sing Lai   +3 more
doaj   +1 more source

A system for site-specific integration of transgenes in mammalian cells.

PLoS ONE, 2019
Mammalian cell expression systems are the most commonly used platforms for producing biotherapeutic proteins. However, development of recombinant mammalian cell lines is often hindered by the unstable and variable transgene expression associated with ...
Xiuling Chi, Qi Zheng, Ruhong Jiang, Ruby Yanru Chen-Tsai, Ling-Jie Kong   +4 more
doaj   +1 more source

A Rare Allele of ST5 From Wild Rice Enhances Salt Tolerance in Rice

Advanced Science, EarlyView.
A novel salt‐tolerance gene ST5W, characterized by a unique 36‐bp promoter insertion, is found exclusively in a small subset of Oryza rufipogon and is absent in cultivated rice. Field trials confirm ST5W significantly enhances rice yield across diverse genetic backgrounds under saline conditions.
Meng Xing, Jingfen Huang, Qiaoling Yuan, Ziyi Yang, Yanyan Wang, Mingchao Zhao, Yamin Nie, Rui Xu, Hongge Qian, Wenxi Chen, Qiaoling Zhang, Qi Du, Leiyue Geng, Yapeng Li, Ziyi Chen, Shizhuang Wang, Like Lou, Haiyuan Peng, Chongke Zheng, Xianzhi Xie, Xiaoming Zheng, Lifang Zhang, Lianguang Shang, Jiaqiang Sun, Qian Qian, Qingwen Yang, Weihua Qiao   +26 more
wiley   +1 more source

Cross Kingdom Metabolic Engineering Paradigm Elevating Sustainable Protein Production

Advanced Science, EarlyView.
ABSTRACT Confronting the dual crisis of escalating global protein demand and unsustainable agriculture necessitates transformative solutions. Here, we pioneer evolutionary insights from maize nitrogen optimization via asparagine synthetase (ASNS) to rewire metabolism in Pichia pastoris.
Yuanyuan Du, Changyu Pi, Kai Hong, Le Gao, Xin Wu   +4 more
wiley   +1 more source

Analysis of impacts of geographical environmental factors on "long landing distance" over-limit event of civil aviation

Hangkong gongcheng jinzhan
The long landing distance from 15 m（50 ft）to touchdown is an over-limit event frequently occurring during the landing phase，and also can significantly increase the risk of landing accidents.
LIU Yuefeng
doaj   +1 more source

Iron‐Mediated Release of Aged Dissolved Organic Carbon From Waterlogged Peatland Under Warming

Advanced Science, EarlyView.
This study conducts a five‐year in situ warming experiment in high‐altitude peatlands to examine dissolved organic carbon (DOC) release. The study shows that warming promotes the release of plant‐derived modern DOC in drained peatlands, but amplifies aquatic export of century‐old DOC from waterlogged peatlands via Fe‐mediated DOC mobilization—a ...
Guohua Dai, Zhiying Yang, Zongguang Liu, Wanjia Hu, Lixiao Ma, Enze Kang, Wanqing Luo, Yunpeng Zhao, Chengzhu Liu, Juan Jia, Ting Liu, Chen He, Quan Shi, Jianliang Liu, Yongheng Gao, Huai Chen, Hailong Zhang, Meixun Zhao, Xiaojuan Feng   +18 more
wiley   +1 more source

Two Routes to Land: Genomic Underpinnings of Parallel Aerial Egg Deposition in Aquatic Old‐World Pila and New‐World Pomacea (Ampullariidae)

Advanced Science, EarlyView.
Comparative genomics of Gondwana‐diverged Pila and Pomacea reveals parallel evolution of aerial oviposition. Convergent chromosomal rearrangements reshape regulatory landscapes within topologically associating domains. Lineage‐specific gene family expansions and viral‐derived perivitelline proteins (PV1) underpin desiccation resistance.
Yufei Zhou, Huawei Mu, Xueying Nie, Yue Gao, Hui Wang, Ling Fang, Tiangang Luan, Monthon Ganmanee, Jian‐Wen Qiu, Jin Sun, Jack Chi‐Ho Ip   +10 more
wiley   +1 more source

Landing Site Selection using Fuzzy Rule-Based Reasoning [PDF]

, 2008
— In this paper, multiple on-board sensors are used to assess the terrain safety in real-time during spacecraft descent. A linguistic, fuzzy rule-based reasoning engine is used to determine terrain safety from sensor measurements and, together with ...

core  

Investigating the Role of Surface Properties on the Ground Effect: An Experimental Study with a Small Propeller [PDF]

Journal of Applied Fluid Mechanics
Safe and efficient multirotor UAV operation during takeoff and landing is critically challenged by the ground effect, a phenomenon whose complexity is compounded in non-ideal environments.
M. Haji Jafari, A. Vali Mohammad, M. H. Rezaei   +2 more
doaj   +1 more source

From Ambition to Action: Barriers and Enablers for the Inclusion of Indigenous Peoples and Local Communities in the Kunming–Montreal Biodiversity Framework and the Role of Non‐State Bridge Organizations

Advanced Science, EarlyView.
Graphical abstract illustrating the transition from global biodiversity ambition to on‐the‐ground implementation of the Kunming–Montreal Global Biodiversity Framework after COP16, highlighting the roles of governments, non‐state actors, scientific knowledge systems, and resource mobilization in achieving transformative biodiversity outcomes.
Susan Enechojo Ogbe, Jinfeng Zhou, Linda Wong, Jiachen Gao   +3 more
wiley   +1 more source