Results 121 to 130 of about 38,348 (304)

SCUBA equipment inspection during Advanced Diver Program course

, 2021
County of Los Angeles Department of Parks and Recreation Certified Underwater Instructor Tom Ebro inspects SCUBA equipment worn by a student enrolled in the Advanced Diver Program.
Los Angeles County (Calif.). Department of Parks and Recreation.
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Physics‐Aware Machine‐Learning‐Driven Inverse Design of Broadband Ultra‐Open Acoustic Metamaterials

Advanced Science, EarlyView.
A physics‐aware machine‐learning framework enables inverse design of ultra‐open acoustic silencers by decoupling spectral and radial design spaces. The approach rapidly identifies broadband, compact, and highly ventilated architectures, while revealing hidden linear design rules that link geometry, impedance matching, and acoustic performance.
Zhiwei Yang, Mengyu Li, Xiaohang Xie, Ao Chen, Thomas G. Bifano, Xin Zhang   +5 more
wiley   +1 more source

whistle-diver

, 1970
whistle n_Clangula_ _clangula_ americana (Bonap.). American Golden-eye; "Whistler"; "Whistle-Diver." Common summer resident in central and southern parts.PRINTED ITEM DNE-citG. M. Story AUG 1970JH AUG 1970Used IUsed I2Used Iwhistle

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SCUBA instructors inspecting equipment for an Advanced Diver Program student

, 2021
Los Angeles County Department of Parks and Recreation certified underwater instructors Tom Ebro (in white jacket on left) and Glen Egstrom (in white jacket on right) inspect SCUBA equipment for a student enrolled in the Advanced Diver Program.
Los Angeles County (Calif.). Department of Parks and Recreation.
core  

Rhoifolin Alleviates Ulcerative Colitis by Targeting NMNAT1 and Activating SIRT1‐FOXO1 Signaling to Enhance ILC3s Effector Function

Advanced Science, EarlyView.
Rhoifolin directly targets NMNAT1, thereby activating nicotinamide salvage pathway and promoting intracellular NAD+ biosynthesis. Elevated NAD+ levels enhance SIRT1 activity, leading to FOXO1 deacetylation and nuclear translocation. Nuclear FOXO1 subsequently binds to the IL‐22 promoter, upregulating IL‐22 transcription and potentiating ILC3 effector ...
Hongqiong Yang, Yishu Zhang, Sijia Feng, Xiaoqing Ma, Jiayi Feng, Junwei Wang, Jialin Gao, An Pan, Dapeng Wu, Kang Ding, Caijuan Zheng, Qi Lv, Lihong Hu   +12 more
wiley   +1 more source

F‐Type Pyocin Versus Phage λ Tail: Conserved Hub, Divergent Fibers

Advanced Science, EarlyView.
Near‐atomic cryo‐EM structures of a Gram‐negative F‐type pyocin reveal a conserved tail tip architecture shared with bacteriophage λ together with a previously unrecognized side‐fiber attachment mode. These findings provide new insight into tailocin assembly and host recognition and establish a structural framework for engineering precision ...
Zhiwei Gu, Yufan Xie, Lanxin Wang, Luyan Ma, Xiaofei Ge, Jiawei Wang   +5 more
wiley   +1 more source

From Speech to Underwater Acoustics: A Transfer Learning Framework for Real-Time Passive Diver Detection Using Keyword Spotting Models

Archives of Acoustics
Passive acoustic detection of divers faces challenges such as low signal-to-noise ratios (SNRs), data scarcity, and latency in conventional methods. This paper proposes Keyword Spotting for Diver Detection (KWS-DD)—a transfer learning framework that ...
Osama Deeb, Saier Mahmoud, Louay Saleh, Assef Jafar, Oumayma Al Dakkak, Ibrahim Chouaib   +5 more
doaj   +1 more source

Sleepy Diver

, 1961
sleepy a_American Scoter_ (OEdemia Americana, _Swainson_) ...called here the "Sleepy Diver."PRINTED ITEM DNE-citG.M.Story September 1961Used I and SupUsed I2Not usedROTTEN, sleepy diver, sleepy dust.The source is not listed in DNE but the card is ...

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Triple‐Helix Biomolecules Construct Self‐Adaptive Multi‐Phase Interfaces for Dendrites Immunized Zinc Metal Anodes

Advanced Science, EarlyView.
A bio‐derived triple‐helix framework enables adaptive interphase engineering for aqueous Zn metal batteries. Directional Zn2+ migration channels and dynamic transformation into β‐sheet domains construct an optimized solid electrolyte interphase with flexible–rigid synergy, delivering dendrite‐free Zn deposition and exceptional long‐term battery cycling
Tianyi Wang, Jiahui Lu, Wei Gu, Jianfei Shi, Yuting Qin, Jian Yang, Di He, Zixia Lin, Jiabao Li, Bing Sun, Guoxiu Wang, Chengyin Wang   +11 more
wiley   +1 more source

TH17–Associated Polyamine Metabolism‐Guided Nanozyme Promotes Alveolar Bone Repair in Periodontitis

Advanced Science, EarlyView.
A pronounced TH17‐skewed immune response is identified in experimental periodontitis, and enrichment of the polyamine pathway is observed during TH17 differentiation, suggesting its potential as an immunometabolic target. Inspired by these findings, DFMO@Ui‐Mn is developed as a therapeutic platform combining cascade ROS scavenging with immunometabolic ...
Cheng Zhu, Tiancheng Li, Yu Jin, Yixin Li, Qicheng Liu, Runzhe Fang, Luyao Qu, Xinyue Tang, Ruomei Li, Xiaoyue Zhao, Jin Hao, Bing Fang, Lunguo Xia   +12 more
wiley   +1 more source