Results 71 to 80 of about 278,933 (298)

Pollen elicits proboscis extension but does not reinforce PER learning in honeybees [PDF]

, 2013
The function of pollen as a reward for foraging bees is little understood, though there is evidence to suggest that it can reinforce associations with visual and olfactory floral cues.
Casteel, Erber, Goodman, Hammer, Hardin, Levin, Menzel, Menzel, Robertson, Roulston, Schmidt   +10 more
core   +2 more sources

Systematically Engineering for Efficient Production of 3‐Methyl‐1‐Butanol in Escherichia coli

Advanced Science, EarlyView.
An integrated metabolic engineering strategy was established for high‐level 3‐methyl‐1‐butanol biosynthesis in Escherichia coli. Molecular dynamics‐guided semi‐rational engineering of dihydroxyacid dehydratase uncovered and relieved key catalytic bottlenecks, while adaptive laboratory evolution enhanced strain robustness.
Nanfei Geng, Hao Liu, Haolin Han, Meng Meng, Shaojie Wang, Tianwei Tan, Haijia Su   +6 more
wiley   +1 more source

Perancangan Sistem Surge Absorber Untuk Mencegah Terjadinya Waterhammer Pada Pipeline Sistem Pendistribusian Avtur Di DPPU Pertamina - Bandara Ngurah Rai

Jurnal Teknik ITS, 2013
Aliran fluida transient erat kaitannya dengan fenomena fluida yang dikenal dengan water hammer. Water hammer yang tidak terkendali dapat berakibat buruk pada instalasi sistem perpipaan.
Agung Dwi Sulaksono, Totok Soehartanto, Gunawan Nugroho   +2 more
doaj  

Research on water hammer model and pressure pulsation of digital hydraulic valve control system

Advances in Mechanical Engineering
It is found through experiments that the amplitude, waveform and periodicity of the water hammer pressure pulsation under the continuous on/off of the valve in the digital hydraulic system are affected by the frequency of the valve switching valve, which
Fulong Chen, Yuzheng Li, Fuqi Li, Heng Du, Hui Huang, Kaiyi Xie   +5 more
doaj   +1 more source

Research on the water hammer protection of the air vessel caused by underground pipe burst in long distance water supply system

MATEC Web of Conferences, 2018
The conventional air vessel installation is usually installed behind the check valve at the upstream end of the pipeline to effectively control the water hammer pressure due to pump trip.
Wang Xingtao, Zhang Jian, Yu Xiaodong, Shi Lin   +3 more
doaj   +1 more source

Prestressed concrete penstock design for water hammer [PDF]

, 1953
Thesis (Civ. E.)--Massachusetts Institute of Technology, Dept. of Civil and Sanitary Engineering, 1953.Includes bibliographical references (leaf 38).by Rajnikant Jayachand Kumbhani.Civ ...
Kumbhani, Rajnikant Jayachand
core  

Simonsenia aveniformis sp nov (Bacillariophyceae), molecular phylogeny and systematics of the genus, and a new type of canal raphe system [PDF]

, 2015
The genus Simonsenia is reviewed and S. aveniformis described as new for science by light and electron microscopy. The new species originated from estuarine environments in southern Iberia (Atlantic coast) and was isolated into culture. In LM, Simonsenia
A Gomes, A Stamatakis, A Witkowski, A Witkowski, B Imanian, D Pickett-Heaps, DG Mann, DG Mann, DG Mann, DG Mann, E Hehenberger, EA Morales, EC Ruck, EC Ruck, EJ Cox, EJ Cox, EJ Cox, F Rimet, H Lange-Bertalot, H Lange-Bertalot, H Lange-Bertalot, H Shimodaira, JD Pickett-Heaps, JH Belcher, JP Kociolek, K Bruder, L Guillou, M Ichinomiya, M Potapova, M Tamura, MP Ashworth, N Lundholm, PA Sims, PA Sims, PC Silva, R Simonsen, R Trobajo, R Trobajo, R Trobajo, T Watanabe, TBB Paddock, VI Mikhailov   +41 more
core   +1 more source

Piezo1 Channel Mediates Mechanically Programmable Drug Delivery to Potentiate Intravesical Chemotherapy

Advanced Science, EarlyView.
This study utilizes programmable mechanical pressure as a therapeutic enhancer to establish a mechano‐chemotherapy strategy. Controlled pressure activates the mechanosensitive ion channel Piezo1 in bladder cancer, triggering a calcium ion cascade that transiently and reversibly amplifies membrane permeability to chemotherapeutics.
Minghai Ma, Xing Li, Minxuan Jing, Zezhong Yang, Jiale He, Jianpeng Li, Xiao Liang, Yunzhong Jiang, Rou Huang, Yuanquan Zhang, Yuanchun Pu, Jiawei Xiu, Yutong Chen, Kaibo Mi, Pu Zhang, Lei Wang, Jinhai Fan   +16 more
wiley   +1 more source

Water Hammer In Irrigation Systems

EDIS, 2022
Irrigation system design includes pump sizing and selection, valve sizing and selection, and pipe sizing as well as the proper selection and placement of many other components. Good design involves selecting and sizing components to perform their intended tasks within the constraints of the system, to ensure an efficient, cost effective, and durable ...
G. A. Clark, D. Z. Haman
openaire   +1 more source

In‐Operando FTIR Study to Investigate the Effect of Varying Lithium Salts on Solid Electrolyte Interface (SEI) Evolution in Lithium Metal Batteries

Advanced Science, EarlyView.
A clear correlation between electrolyte salt chemistry and Solid Electrolyte Interface (SEI) performance in lithium metal batteries is established using in operando FTIR spectroscopy. This study shows that LiTFSI instantaneously forms a robust, inorganic organic hybrid SEI (LiF, Li3N, Li2O, ROCO2Li, ROLi) that minimizes overpotential, while less ...
Samia Rahman, Rhyz Pereira, Jantakan Nedsaengtip, Vibha Kalra   +3 more
wiley   +1 more source