Results 41 to 50 of about 17,184 (237)

Interference fringe suppression in tunable diode laser absorption spectroscopy based on CEEMDAN-WTD

Frontiers in Physics, 2022
Owing to interference fringes in the multireflective gas cell, the detection sensitivity of a system in tunable diode laser absorption spectroscopy (TDLAS) will decrease significantly.
Shoulin Wang, Weihua Gong, Zhaowei Wang, Yubin Wei, Yanfang Li, Tingting Zhang, Qinduan Zhang, Lin Zhang, Fugang Song, Wei Zhang, Tongyu Liu, Tongyu Liu   +11 more
doaj   +1 more source

Comparison of the Effectiveness of CO2 and Diode Lasers for Gingival Melanin Depigmentation: A Randomized Clinical Trial

Journal of Lasers in Medical Sciences, 2022
Introduction: Gingival hyperpigmentation is an esthetic concern for some individuals. This study compared the effectiveness of CO2 and diode lasers for gingival depigmentation. Methods: This randomized, split-mouth, clinical trial consisted of 12 patients with the chief complaint of hyperpigmented gingival areas.
Amir Moeintaghavi, Farzaneh Ahrari, Amir Fallahrastegar, Asma Salehnia   +3 more
openaire   +2 more sources

High‐Power Rapid Laser‐Induced Synthesis of Multi‐functional Cobalt Metal‐Organic Framework With an Unprecedented Synthesis Efficiency

Advanced Materials Technologies, EarlyView.
Laser‐assisted synthesis enables rapid (within 1 h) and high‐yield (≥90%) production of Co‐MOFs with mesoporous structures, tunable magnetic and optical properties, and efficient adsorption of N2, CH4, and CO2 for low‐energy gas separation. DFT calculations elucidate the electronic structure and adsorption behavior.
Saliha Mutlu, Bülend Ortaç, Ali Karatutlu, Taylan Gorkan, Engin Durgun, Dilek Soyler, Saniye Soylemez, Jelena Lillepäg, Volkan Filiz, Nergis Arsu, Sevil Savaskan Yilmaz   +10 more
wiley   +1 more source

Optical Manipulation of Whispering Gallery Mode Microlasers for Controlled Cellular Delivery

Advanced Optical Materials, EarlyView.
Optically trapped whispering‑gallery microlasers are precisely positioned onto non‐phagocytic mammalian cells to report local refractive‑index changes in real time. Time‑dependent wavelength shifts reveal successive stages from membrane contact to internalization.
Soraya Caixeiro, Paloma Rodríguez‐Sevilla, Kishan Dholakia, Malte C. Gather   +3 more
wiley   +1 more source

Research progress on diagnosis and treatment of gingival pigmentation

口腔疾病防治, 2022
Gingival pigmentation(GP) manifests as dark pigmentation spots, such as black or brown spots, in the gums. It is mostly caused by the deposition of melanin particles secreted by melanocytes on the gingival epithelium.
SONG Sixing, ZHAO Lei, XIAO Shimeng
doaj   +1 more source

GHRHR Deficiency Enhances Retinal Ganglion Cell Survival and Visual Functions in Experimental Glaucoma by Inhibiting Ferroptosis

Advanced Science, EarlyView.
Glaucoma, a major cause of blindness, involves retinal ganglion cell (RGC) degeneration. This study shows growth hormone‐releasing hormone receptor (GHRHR) deficiency preserves RGC survival and restores vision, unlike activation which only aids survival.
Yan Tong, Ming Ho Yam, Jiaxin Zhang, Lin Du, Linbin Zhou, Yolanda Wong Ying Yip, Bo Man Ho, Hemlata Bisnauthsing, Jiahui Li, Ivan Kong, Shushu Xu, Changzhen Fu, Karl K.H. So, Joaquim S.L. Vong, Ling‐Ping Cen, Ming‐Ming Yang, Khazeema Yousaf, Mai Har Sham, Sun On Chan, Poemen P. Chan, Chi Pui Pang, Clement C. Tham, Jing Na He, Jian Li, Wai Kit Chu   +24 more
wiley   +1 more source

Histological Comparison of Excized Hemorrhoidal Tissues Irradiated by CO2 laser, Ne: YAG laser, and Diode laser

Nippon Daicho Komonbyo Gakkai Zasshi, 2004
痔核手術で得られたヒト痔核組織に対し,炭酸ガス(CO2)レーザー,Ne : YAG(ヤグ)レーザー,半導体レーザーにより5W,7Wを5秒間照射しその影響を検索した.CO2レーザーはfocus beamとdefocussed beamで,ヤグレーザーと半導体レーザーでは,内照射と外照射を行い,さらに組織内にインドシアニングリーン(ICGlmg/ml)を注入し,レーザー光を照射した.CO2レーザーは,炭化凝固の少ない良好な創が得られ,ICG注入により深達は阻止された.ヤグレーザーと半導体レーザーの内照射では,CO2レーザーに劣らない創が得られ,外照射ではヤグレーザーは深達度が強いものの,色素依存性がないためICG注入により深達度は低下し,反対に半導体レーザーでは増強した ...
Utsunomiya, T., Shibata, O., Kikuta, S., Hamada, A., Horichi, Y.   +4 more
openaire   +2 more sources

Structural and Compositional Effects on the Scintillation Properties of Fast Emitting Metal‐Organic Frameworks

Advanced Science, EarlyView.
The crystalline structure, the atomic numbers of the constituent elementsand the size of MOF crystals each influence their photoluminescence and scintillation properties in distinct ways. Together, these factors provide valuable guidelines for designing systems with optimized performance and tunable timing characteristics, arising from the synergistic ...
Francesca Cova, Jacopo Perego, Biplab Joarder, Nobuhiro Yanai, Anna Vedda, Silvia Bracco, Angiolina Comotti, Angelo Monguzzi, Irene Villa   +8 more
wiley   +1 more source

Evaluation of a laser diode array as an efficient approach to laser weeding

Weed Technology
In-crop site-specific weed recognition systems have enabled precise and selective use of alternative nonchemical weed control technologies to provide much-needed support for weed management programs in large-scale cropping systems. Laser weeding has long
Michael Walsh, Erik Muller, Guy Coleman
doaj   +1 more source

Novel light therapies in treatment of onychomycosis

Przegląd Dermatologiczny, 2016
Onychomycosis is a frequent nail disease. Standard treatment is not sufficient in some patients. The aim of the study is to provide an overview of laser, UVC and photodynamic therapy of onychomycosis. The use of Nd:YAG laser is described in many articles,
Anna Erkiert-Polguj, Barbara Algiert, Helena Rotsztejn   +2 more
doaj   +1 more source