Article
Biology
Braedan M. McCluskey, Yipeng Liang, Victor M. Lewis, Larissa B. Patterson, David M. Parichy
Summary: The study introduces metrics derived from information theory to describe patterns and pattern variation in Danio fishes, which are suitable for distinguishing general pattern types and revealing subtle phenotypic differences. This provides new tools for analyzing pigment patterns in Danio and sets the stage for future analyses of pattern morphospace and its mechanistic underpinnings.
Article
Developmental Biology
Dae Seok Eom, Larissa B. Patterson, Raegan R. Bostic, David M. Parichy
Summary: The study revealed the important role of the adhesive protein JAM3b in pigment cells in zebrafish, showing its involvement in cell aggregation and melanophore survival, with overlapping and non-overlapping functions with other related receptors.
DEVELOPMENTAL BIOLOGY
(2021)
Article
Developmental Biology
Marco Podobnik, Ajeet P. Singh, Zhenqiang Fu, Christopher M. Dooley, Hans Georg Frohnhofer, Magdalena Firlej, Sarah J. Stednitz, Hadeer Elhabashy, Simone Weyand, John R. Weir, Jianguo Lu, Christiane Nuesslein-Volhard, Uwe Irion
Summary: Teleost fish of the genus Danio, specifically Danio rerio and Danio aesculapii, provide valuable insights into the genetic and cellular mechanisms underlying pigment pattern variation in vertebrates. The divergence of the potassium channel gene kcnj13 is responsible for the divergent patterns of horizontal stripes and vertical bars in these sister species. The study demonstrates that kcnj13 is specifically required in melanophores for interactions with xanthophores and iridophores, affecting pigment cell shapes and consequently influencing color pattern and contrast. The divergence of kcnj13 between the two species is attributed to cis-regulatory changes rather than protein coding changes. These findings suggest that changes in kcnj13 expression play a role in the diversification of pigment patterns through homotypic and heterotypic interactions between pigment cells and their shapes.
Article
Multidisciplinary Sciences
Jiancai Xu, Leejin Bae, Mohamed Ezzat, Hyung Taek Kim, Jeong Moon Yang, Sang Hwa Lee, Jin Woo Yoon, Jae Hee Sung, Seong Ku Lee, Liangliang Ji, Baifei Shen, Chang Hee Nam
Summary: A localized nanoparticle insertion scheme has been developed to decouple electron injection from laser evolution in laser wakefield acceleration. Experimental results show that controllable electron injection, localized within a short range of 100 μm, can be achieved by the nanoparticle insertion method. The optimized ablation laser energy and temporal delay result in electron bunches with a beam charge above 300 pC and a divergence of around 12 mrad, with an injection probability over 90%. This method provides a stable high-charge injection approach for electron sources in low-density plasmas, avoiding the disturbing effects of the electron injection process on laser evolution.
SCIENTIFIC REPORTS
(2022)
Article
Multidisciplinary Sciences
Simona Susnik Bajec, Ida Djurdjevic, Carmen Linares Andujar, Mateja Erdani Kreft
Summary: Based on the analysis of gene expression patterns and ultrastructure, this study reveals the origin and classification of erythrophores in brown trout skin. Erythrophore subtype 2 in the red spots of brown trout skin exhibits a unique gene expression pattern, possibly associated with melanogenesis or xanthophore differentiation. The overexpression of paralogues derived from genome duplication events in the red spots suggests their contribution to the origin of a new cell subtype. The use of advanced microscopy techniques combined with gene expression profiling contributes to a better understanding of the pigment cell types in brown trout skin.
SCIENTIFIC REPORTS
(2022)
Review
Anatomy & Morphology
Gabriel E. Bertolesi, Nilakshi Debnath, Hannan R. Malik, Lawrence L. H. Man, Sarah McFarlane
Summary: The African clawed frog, Xenopus laevis, can adjust its skin color according to light from the environment, which is regulated by the photosensitivity of the eye and pineal complex. The exploration of opsins in X. laevis is contributing to the understanding of their roles in different photosensitive organs, but also poses new questions and challenges.
FRONTIERS IN NEUROANATOMY
(2022)
Article
Optics
Sungkwon Shin, Woojin Lee, Jong Kab Park, Doh-Hoon Kim
Summary: This paper presents a femtosecond laser processing method to precisely control taper angles of micro-holes. The ablation depth depends on the ablation rate, number of repetitions for scanning, beam size, and spot overlap ratio, which in turn influence the taper angles. We developed a multilevel material processing method involving analytical models to achieve desired taper angles on 64FeNi alloy sheets.
OPTICS AND LASER TECHNOLOGY
(2023)
Article
Materials Science, Multidisciplinary
Bo Sung Shin, Sungmoo Hong, Jinsu Kim, Junuk Lee, Sungyeob Jung
Summary: This study investigates the characteristics of laser-induced graphene (LIG) generated on a polyimide film with different laser processing parameters. The surface morphology of LIGs is found to be related to their performance. By altering the processing parameters, LIGs with different colors and shapes can be produced, which has significant implications for sensor applications.
ACS MATERIALS LETTERS
(2023)
Article
Optics
Yunhui Xie, Matthew Praeger, James A. Grant-Jacob, Robert W. Eason, Ben Mills
Summary: Laser processing techniques are crucial in modern manufacturing, but existing toolpath design processes require manual labor and lack the ability to compensate for machining errors. This research demonstrates a novel laser machining method that utilizes reinforcement learning to control and supervise the process in real time, enabling the machining of arbitrary predefined patterns while detecting and compensating for incorrectly executed actions.
Article
Optics
Keiichi Bamoto, Haruyuki Sakurai, Shuntaro Tani, Yohei Kobayashi
Summary: This study demonstrated the use of Bayesian optimization as an efficient method to find the optimal conditions for laser processing. It showed that the optimum set of parameters to achieve a desired shape can be obtained autonomously and more than an order of magnitude faster than with a simple grid-search.
Article
Environmental Sciences
Song Liu, Nan Zhang, Zhifang Liang, Er-chao Li, Yong Wang, Shijie Zhang, Jiliang Zhang
Summary: Exposure to Butylparaben (BuP) induces darker skin pigmentation in Nile tilapia by interfering with melanin synthesis genes and neurotransmitter levels. BuP inhibits phototransduction from the retina to the brain, resulting in increased melanin synthesis and decreased opsin expression.
Article
Chemistry, Analytical
Jamario R. Skeete, Jeanne M. Du-Fay-de-Lavallaz, David Kenigsberg, Carlos Macias, Jeffrey R. Winterfield, Parikshit S. Sharma, Richard G. Trohman, Henry D. Huang
Summary: Catheter-based ablation techniques, including the use of laser energy, play a crucial role in atrial fibrillation (AF) management. While laser balloon ablation may not be as widely used as other techniques, advancements in product design and procedural protocols have shown it to be equally safe and effective. Strategies to improve procedural efficiency and decrease radiation exposure make laser balloon ablation an increasingly promising option.
Article
Nanoscience & Nanotechnology
Shu-Yu Liang, Yue-Feng Liu, Hai-Jing Zhang, Zhi-Kun Ji, Hong Xia
Summary: This work successfully fabricated patterned CsPbBr3 films with high quality and precision using the lamination-assisted femtosecond laser ablation technique. The introduction of a sandwich-laminated structure improved the stability of the fabrication process.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Optics
Daniel Holder, Rudolf Weber, Christoph Roecker, Gerhard Kunz, David Bruneel, Martin Delaigue, Thomas Graf, Marwan Abdou Ahmed
Summary: The study reported on high-quality, high-throughput laser milling of silicon with a sub-ps laser delivering over 1 kW of average power. By adjusting the processing strategy and parameters, smooth surfaces with low roughness were achieved while maintaining a high material removal rate.
Article
Materials Science, Multidisciplinary
Han-Hui Wang, Jing-An Kong, Min Xu, Peng-Fei Zhang, Li Yang, Xiao-Hong Shi, He-Jun Li
Summary: The SiO2-Nd2O3/Si-SiC-MoSi2 coating was proposed to repair damaged SiC coated C/C composites by laser cladding. Results showed that the coating effectively improved the laser ablation resistance of the specimens by reducing the maximum temperature and promoting the growth of ablative products.
Article
Biology
Shigeru Kondo
JOURNAL OF THEORETICAL BIOLOGY
(2017)
Article
Cell Biology
Risa Sawada, Toshihiro Aramaki, Shigeru Kondo
Article
Developmental Biology
Haruhiko Adachi, Keisuke Matsuda, Teruyuki Niimi, Yasuhiro Inoue, Shigeru Kondo, Hiroki Gotoh
MECHANISMS OF DEVELOPMENT
(2018)
Article
Multidisciplinary Sciences
Ryo Mizuuchi, Hiroshi Kawase, Hirofumi Shin, Daisuke Iwai, Shigeru Kondo
SCIENTIFIC REPORTS
(2018)
Article
Developmental Biology
Toshihiro Aramaki, Shigeru Kondo
DEVELOPMENTAL BIOLOGY
(2020)
Article
Anatomy & Morphology
Misaki Sakashita, Mao Sato, Shigeru Kondo
JOURNAL OF MORPHOLOGY
(2019)
Article
Developmental Biology
Yuu Usui, Toshihiro Aramaki, Shigeru Kondo, Masakatsu Watanabe
Article
Cell Biology
Junpei Kuroda, Takeshi Itabashi, Atsuko H. Iwane, Toshihiro Aramaki, Shigeru Kondo
FRONTIERS IN CELL AND DEVELOPMENTAL BIOLOGY
(2020)
Article
Biology
Shin-Ichiro Ei, Hiroshi Ishii, Shigeru Kondo, Takashi Miura, Yoshitaro Tanaka
Summary: The proposed method simplifies complex reaction-diffusion networks into effective equations with reduced integral kernels, showing the potential for different systems to exhibit similar spatial and temporal patterns.
JOURNAL OF THEORETICAL BIOLOGY
(2021)
Article
Multidisciplinary Sciences
Keisuke Matsuda, Hiroki Gotoh, Haruhiko Adachi, Yasuhiro Inoue, Shigeru Kondo
Summary: The study reveals that the morphology of beetle horns is encoded in the primordial folding pattern, with different regions contributing to branching, elongation, and angular change. Computational methods used in the research can be applied to the study of morphology in other exoskeletal animals.
SCIENTIFIC REPORTS
(2021)
Article
Developmental Biology
Hibiki Nakagawa, Junpei Kuroda, Toshihiro Aramaki, Shigeru Kondo
Summary: Actinotrichia play a crucial role in the formation of fish caudal fins by providing physical support in the dorsal-ventral direction. Lack of actinotrichia results in disordered fin tip shape and oval-shaped fish body.
DEVELOPMENTAL BIOLOGY
(2022)
Article
Biochemical Research Methods
Misaki Sakashita, Shintaro Yamasaki, Kentaro Yaji, Atsushi Kawamoto, Shigeru Kondo
Summary: The shape of bones adapts to external loads, with increased loads inducing bone synthesis and decreased loads inducing bone resorption. Simulation using topology optimization can successfully reproduce the internal trabecular structure of bones, aiding in the study of bone diseases. Few attempts have been made to simulate the external structure of bones, but it can be achieved through topology optimization, with cells forming both internal and external bone structures.
PLOS COMPUTATIONAL BIOLOGY
(2021)
Review
Multidisciplinary Sciences
Shigeru Kondo, Masakatsu Watanabe, Seita Miyazawa
Summary: Skin patterns are the first example of Turing patterns in living organisms, with research revealing principles of pattern formation at molecular and cellular levels. Contrary to classical reaction-diffusion models, real skin patterns are established by autonomous migration and proliferation of pigment cells mediated through direct cell-cell interactions. Various studies are underway to adapt mathematical models to experimental findings in skin pattern research for potential applications in other autonomous pattern formation phenomena.
PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY A-MATHEMATICAL PHYSICAL AND ENGINEERING SCIENCES
(2021)
Editorial Material
Developmental Biology
Shigeru Kondo
Summary: The Turing model, a mathematical model that explains autonomy in the morphogenesis of organisms, has gained acceptance among experimental embryologists. It has been used to conceptualize and experimentally explore biological phenomena, as well as being incorporated into complex 3D models.
Article
Multidisciplinary Sciences
Haruhiko Adachi, Keisuke Matsuda, Teruyuki Niimi, Shigeru Kondo, Hiroki Gotoh
SCIENTIFIC REPORTS
(2020)