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Journal articles on the topic 'Iridio'

Author: Grafiati

Published: 4 June 2021

Last updated: 27 April 2022

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1

Salazar Pereda, Verónica, Mariana Ortiz Hernández, Daniel Mendoza Espinosa, Simplicio González Montiel, Elizabeth Contretas López, and Araceli Castañeda Ovando. "Estudio de la Reactividad del Compuesto Organometálico de Iridio (III) con el Ligante TPMe2 Tp frente a la Alildifenilfosfina." Pädi Boletín Científico de Ciencias Básicas e Ingenierías del ICBI 7, no. 14 (2020): 37–41. http://dx.doi.org/10.29057/icbi.v7i14.4479.

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La importancia de los complejos organometálicos de iridio, reside en su uso como materiales híbridos orgánico-inorgánicos, para la formación de polímeros que contengan centros metálicos. Estos compuestos son de gran interés no sólo en la industria de los polímeros, sino también en la industria química primaria y secundaria por su potencial aplicación en procesos de catálisis. El éxito de estos compuestos reside en la capacidad de introducir complejos metálicos con cadenas poliméricas, los cuales pueden darle en particular diferentes atributos tales como actividad catalítica, entre otras.

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Hernández-Pérez, M. A., J. R. Vargas-García, and J. A. Romero-Serrano. "Diagramas de fase CVD para la preparación de películas de iridio." Revista de Metalurgia 38, no. 1 (2002): 30–37. http://dx.doi.org/10.3989/revmetalm.2002.v38.i1.381.

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Valenzuela Barrientos, Wilner, and Adolfo La Rosa-Toro Gómez. "PREPARACIÓN, CARACTERIZACIÓN Y EVALUACIÓN DE LA ESTABILIDAD ELECTROQUÍMICA DE ELECTRODOS Ti/Co3O4- xIrO2." Revista de la Sociedad Química del Perú 81, no. 2 (2015): 148–59. http://dx.doi.org/10.37761/rsqp.v81i2.25.

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La espinela de cobalto es un buen material para la fabricación de electrodos destinados ala oxidación electroquímica de colorantes tipo azo; sin embargo, presenta baja estabilidadelectroquímica en electrolitos que contienen cloruros, sufriendo severa corrosión. El presentetrabajo se enfoca en la preparación y evaluación de electrodos de espinela de cobalto dopadoscon óxido de iridio, soportado sobre lámina de titanio, Ti/Co3O4-xIrO2 y su evaluación comoelectrodos estables a la corrosión por cloruros. Para evaluar la influencia del contenido de IrO2en la espinela de cobalto a la estabilidad ele

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Rangel-Peña, U. J., L. A. Zárate-Hernández, R. L. Camacho-Mendoza, S. González-Montiel, and J. Cruz-Borbolla. "Estudio TFD de cúmulos de Pt-Ir con geometría prisma triangular." Pädi Boletín Científico de Ciencias Básicas e Ingenierías del ICBI 9, Especial2 (2021): 157–61. http://dx.doi.org/10.29057/icbi.v9iespecial2.7996.

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En este trabajo, se presenta un estudio sistemático de las propiedades estructurales y electrónicas de cúmulos bimetálicos de Pt6−nIrn donde n = [0 – 6] usando la metodología B3LYP/LanL2DZ en el contexto de la teoría de los funcionales de la densidad (TFD). Las estructuras de los cúmulos puros Pt6 e Ir6 muestran arreglos tridimensionales altamente estables con multiplicidades electrónicas (μ) entre 7 y 13. El cúmulo puro de Pt6 más estable adopta una geometría de prisma triangular. Para la evaluación de los cúmulos dopados Pt6−nIrn (n = [0 – 6]) se determinó la longitud de enlace promedio, las

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5

López, Alberto, and Francisco Medina. "El iridio: una pista importante en la explicación de la desaparición de los dinosaurios." Educación Química 5, no. 2 (2018): 97. http://dx.doi.org/10.22201/fq.18708404e.1994.2.66779.

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De acuerdo con datos recabados en cientos de investigaciones, hace unos 65 millones de años la Tierra pasó por un corto período de drásticos cambios en su clima, los cuales afectaron profundamente a los diferentes ecosistemas en toda la superficie terrestre...

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Sola-Llano, Rebeca, and Antonio Veloso. "Konposatu organometalikoak terapia fotodinamikorako." EKAIA Euskal Herriko Unibertsitateko Zientzia eta Teknologia Aldizkaria, no. 35 (May 2, 2019): 57–70. http://dx.doi.org/10.1387/ekaia.19701.

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BODIPY kromoforoei (4,4-difluoro-4-bora-3a,4a-diaza-s-indazeno koloratzaileak) loturiko iridio (III) ziklo metalikoak prestatu eta karakterizatu dira fotosentikortzaile berri eta efizienteak garatu nahian. Diseinu arrazionala dela bide, argi ikusgaia xurgatzeko gai diren konposatuak lortu dira, zeinak oxigeno singletea oso modu efizientean sortzeko gai diren, batzuk leiho klinikora ere gerturatuz; ehunetan sakon barneratzeko gai den argi-eremua dena, hain zuzen. Konposatuen igorpen fosforeszentea, erdibizitza denborak eta kalkulu teorikoak aurrera eraman dira ikusitako fotosentikortzaile-aktib

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Giunta, F., R. Stefini, E. Micheletti, et al. "Brachiterapia frazionata stereotassica con Iridio 192 HDR nel trattamento degli astrocitomi inoperabili sovratentoriali classe T1 UICC." Rivista di Neuroradiologia 7, no. 1_suppl (1994): 277–78. http://dx.doi.org/10.1177/19714009940070s154.

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8

Redón de la Fuente, María Del Rocío. "Nanopartículas catalíticas… ¿polvo mágico?" Mundo Nano. Revista Interdisciplinaria en Nanociencias y Nanotecnología 8, no. 15 (2016): 53–90. http://dx.doi.org/10.22201/ceiich.24485691e.2015.15.53868.

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Con el inicio de la investigación en materiales con dimensiones nanométricas, pronto se descubrieron sus bondades enlazadas con su excepcional relación área superficial/ volumen, siendo uno de los ámbitos de mayor potencial de aplicación el de catalizadores. En particular, en las nanopartículas de metales del grupo del platino (rutenio, osmio, rodio, iridio, paladio, platino) se han invertido muchas horas de investigación para encontrar catalizadores con estas dimensiones que mejoren el desempeño cuando son empleados en una escala dimensional mayor. Entre la comunidad, algunos investigadores

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9

Yanchapanta Bastidas, Vilma Nohemí, Richard Willians Pachacama Choca, and Lizbeth Sofía León Quishpe. "Herramienta de cálculo de blindaje para adaptar un bunker de braquiterapia de alta tasa de dosis de Iridio 192 a Cobalto 60." Ciencia Digital 3, no. 3.3 (2019): 231–40. http://dx.doi.org/10.33262/cienciadigital.v3i3.3.811.

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Hasta fines de la década pasada, los equipos más difundidos para realizar braquiterapia de alta tasa de dosis (HDR) se basaban en el uso de equipos con fuentes radiactivas de Iridio 192, pero en los últimos años se han introducido al mercado equipos con fuentes de Cobalto 60, por lo que será necesario una adición de espesor en las barreras de protección del bunker debido a las características radiantes del Co-60, generando la necesidad de desarrollar un método de cálculo de blindaje de una manera ágil y sencilla. Dichos espesores calculados deben atenuar la radiación a 100 uSv/semana en las zo

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10

Ramírez-Martín, Carlos, Diego Figueredo-Amaya, Jairo Mesa-Chaparro, and Alejandra Maria Rios-Rojas. "Propiedades físicas de estructuras tipo perovskita: Síntesis y aplicaciones." Aibi revista de investigación, administración e ingeniería 8, S1 (2021): 307–14. http://dx.doi.org/10.15649/2346030x.2474.

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Los materiales tipo perovskita han despertado gran interés dada la flexibilidad que poseen para acomodar elementos de diferentes radios iónicos, permitiéndoles ser estable. Ello ha conllevado al estudio de familias específicas, nombradas de acuerdo al catión de menor radio iónico en la estructura, tal es es el caso de materiales basados en cobalto (cobaltitas), en manganeso (manganitas), en hierro con bismuto (ferritas de bismuto), en iridio (iridiatos). En el presente trabajo se realiza una breve descripción de la estructura perovskita, de igual forma se detallan las características básicas d

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11

Moussa, Jamal, Marie Noelle Rager, Lise Marie Chamoreau, Louis Ricard та Hani Amouri. "Unprecedented π-Bonded Rhodio- and Iridio-o-Benzoquinones as Organometallic Linkers for the Design of Chiral Octahedral Bimetallic Assemblies". Organometallics 28, № 2 (2009): 397–404. http://dx.doi.org/10.1021/om800594g.

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12

Mai, Nguyễn Thị, Nguyễn Thị Thúy, Trần Thị Thu Hường та ін. "KHẢO SÁT THÀNH PHẦN CÁC HOẠT CHẤT NHÓM IRIDOID TRONG DỊCH CHIẾT TỪ RỄ CỦ ĐỊA HOÀNG (Rehmannia glutinosa Libosch.) BẰNG UHPLC VÀ LC-MSD-Trap-SL". Tạp chí Khoa học 18, № 12 (2021): 2201. http://dx.doi.org/10.54607/hcmue.js.18.12.3162(2021).

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Dung môi đóng vai trò rất quan trọng trong việc trích li các hợp chất tự nhiên bởi dung môi ảnh hưởng lớn đến thành phần của dịch chiết. Nghiên cứu này nhằm so sánh sự khác nhau về thành phần các hoạt chất nhóm iridoid trong các dịch chiết nước và ethanol của rễ củ địa hoàng (Rehmannia glutinosa Libosch.) bằng phương pháp sắc kí lỏng hiệu năng cao (UHPLC) và sắc kí lỏng ghép khối phổ (LC-MSD-Trap-SL). Theo các số liệu của LC-MSD-Trap-SL, Jioglutoside B, Leonuride và Jioglutin E là những iridoid phân biệt sự khác nhau giữa hai dịch chiết. Trong khi đó, phân tích UHPLC cũng chứng minh rằng hàm l

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13

Urrutia-Fucugauchi, J., J. Pérez-Lazo, M. M. Fundora, and J. M. Espíndola. "Rock-magnetic properties of the Cretaceous/Tertiary Micara Formation in the Guantánamo area, eastern Cuba." Geofísica Internacional 37, no. 4 (1998): 253–62. http://dx.doi.org/10.22201/igeof.00167169p.1998.37.4.512.

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Se presentan los resultados iniciales del estudio de propiedades magnéticas de la sección sedimentaria Calabazas, de 35 m de espesor de la Formación Micara, expuesta en el occidente de Cuba. Estudios anteriores de la Formación Micara interpretaron la ocurrencia del límite Cretácico/Terciario (K/T) dentro de la secuencia sedimentaria, con base en evidencia del análisis de los foraminíferos planctónicos y correlaciones laterales entre afloramientos. El límite K/T en las secciones carbonatadas en Gubbio, Italia y Caravaca, España se caracteriza por una anomalía magnética asociada a un enriquecimi

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14

Peiffer, R. L., B. P. Wilcock, and H. Yin. "The Pathogenesis and Significance of Pre-iridal Fibrovascular Membrane in Domestic Animals." Veterinary Pathology 27, no. 1 (1990): 41–45. http://dx.doi.org/10.1177/030098589002700106.

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Histologic examination was made of 1,419 globes from domestic animals (964 dogs, 374 cats, 41 horses, and 40 cattle) with ocular disease; pre-iridal membranes (rubeosis iridis) were found in 98. The membranes originated as endothelial budding from the anterior iridal stroma and seemed to mature into fibrous or fibrovascular membranes that were often followed by hyphema or, occasionally, glaucoma. Pre-existent disease in the 98 affected globes included chronic endophthalmitis (27/98), chronic glaucoma (24/98), anterior uveal melanoma (15/98), ciliary body adenoma (14/98), neoplasms metastatic t

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15

Kinuthia, Esther W., Moses K. Langat, Elizabeth M. Mwangi, and Peter K. Cheplogoi. "Constituents of Kenyan Gardenia Volkensii." Natural Product Communications 7, no. 1 (2012): 1934578X1200700. http://dx.doi.org/10.1177/1934578x1200700106.

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A new triterpenoid, 3-oxo-22α-hydroxy-olean-12-en-28-oic acid (1), oleanolic acid (2) and a known iridoid, 10-hydroxy-1-oxo-7-iriden-11-oic acid methyl ester (3) have been isolated from the dichloromethane extract of the dried seeds of Gardenia volkensii. Their structures were established by 1D and 2D NMR spectroscopic and MS methods.

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16

Li, Jie, Yan-Li Zhao, Heng-Yu Huang, and Yuan-Zhong Wang. "Phytochemistry and Pharmacological Activities of the Genus Swertia (Gentianaceae): A Review." American Journal of Chinese Medicine 45, no. 04 (2017): 667–736. http://dx.doi.org/10.1142/s0192415x17500380.

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Swertia plants have been considered to be medicinal plants useful for the treatment of various ailments for thousands of years, especially in Asian countries. This is due to the broad variety of chemical compounds that provide multiple ligands for bonding to different endogenous biomacromolecules for patients. Chemical constituents and pharmacological activities of Swertia plants are summarized in this paper. Approximately 419 metabolites and 40 bioactive compounds have been reported from 30 Swertia species, including xanthones, flavonoids, seco-iridiods, iridiods, triterpenoids, alkaloids, vo

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17

Hamilton, Paul B., Katarzyna Stachura-Suchoples, Wolf-Henning Kusber, Andreanne Bouchard, and Regine Jahn. "Typification of the puzzling diatom species Neidium iridis (Neidiaceae)." Plant Ecology and Evolution 152, no. 2 (2019): 392–401. http://dx.doi.org/10.5091/plecevo.2019.1601.

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Background and aims – Confusion over the taxonomic identity of Neidium iridis (Ehrenb.) Cleve (= Navicula iridis Ehrenb.) has persisted for more than 130 years with identifications of valve shapes varying from elliptical to linear and sizes from 100 to 300 µm. This confusion can be linked to the rarity of the species and poor attention to the original line drawings of Ehrenberg. This study examines the type material of Navicula iridis and further uses additional material from North America to define the species Neidium iridis. Methods – Mica and material from Christian Gottfried Ehrenber

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18

Bhosale, Pritam-Bhagwan, Preethi Vetrivel, Sang-Eun Ha, et al. "Iridin Induces G2/M Phase Cell Cycle Arrest and Extrinsic Apoptotic Cell Death through PI3K/AKT Signaling Pathway in AGS Gastric Cancer Cells." Molecules 26, no. 9 (2021): 2802. http://dx.doi.org/10.3390/molecules26092802.

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Iridin is a natural flavonoid found in Belamcanda chinensis documented for its broad spectrum of biological activities like antioxidant, antitumor, and antiproliferative effects. In the present study, we have investigated the antitumor potential of iridin in AGS gastric cancer cells. Iridin treatment decreases AGS cell growth and promotes G2/M phase cell cycle arrest by attenuating the expression of Cdc25C, CDK1, and Cyclin B1 proteins. Iridin-treatment also triggered apoptotic cell death in AGS cells, which was verified by cleaved Caspase-3 (Cl- Caspase-3) and poly ADP-ribose polymerase (PARP

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Zotov, A. A. "Morphology of the preimaginal stages of weevil Lixus iridis Olivier, 1807 (Coleoptera: Curculionidae)." Caucasian Entomological Bulletin 5, no. 2 (2009): 249–52. http://dx.doi.org/10.23885/1814-3326-2009-5-2-249-252.

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İNCİ, Aslıhan, and Serap ÜNÜBOL AYPAK. "Irisin and Its Metabolic Effects: Review." Turkiye Klinikleri Journal of Endocrinology 11, no. 1 (2016): 15–21. http://dx.doi.org/10.5336/endocrin.2016-49995.

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21

Patel, Shriji. "Pars plana vitrectomy combined with irido-zonulo-hyaloidectomy for aqueous misdirection." European Journal of Ophthalmology 30, no. 2 (2019): 396–98. http://dx.doi.org/10.1177/1120672119872056.

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Introduction: To review the indications and necessary steps for successful irido-zonulo-hyaloidectomy in persistent aqueous misdirection. Study design/materials and methods: A 60-year-old woman was referred for persistent aqueous misdirection despite aggressive medical management. Her intraocular pressure would elevate with discontinuation of cycloplegics and her lens shifted anteriorly. She underwent standard 25g pars plana vitrectomy with irido-zonulo-hyaloidectomy. Results: The aqueous misdirection resolved with successful creation of the irido-zonulo-hyaloidectomy with noticeable deepening

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Sora, Daisuke, Kei Takayama, Manzo Taguchi, et al. "Topical Corticosteroid-Resolved Rubeosis Iridis with Neovascular Glaucoma Caused by Noninfectious Granulomatous Uveitis." Case Reports in Ophthalmology 9, no. 1 (2018): 243–47. http://dx.doi.org/10.1159/000488137.

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Purpose: We report a case of topical corticosteroid treatment-resolved rubeosis iridis with neovascular glaucoma (NVG) caused by noninfectious granulomatous uveitis. Case Report: A 61-year-old woman with left ocular pain and blurred vision was referred to our department. Visual acuity and intraocular pressure (IOP) were 20/60 and 37 mm Hg in the left eye, respectively. Inflammatory cells, hyphema, and rubeosis iridis were observed. All laboratory tests, including multiplex polymerase chain reaction for infection using aqueous humor, were negative, and there was neither retinal occlusive vascul

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Fang, Jing, Yufei Liu, Tianjiao Wang, Xia Yan, Yang Shuo, and Liping Zhang. "Characteristics of Diatom Assemblages in Surface Sediments of the new Yongding River and Haihe River Estuaries, Tianjin." E3S Web of Conferences 198 (2020): 01036. http://dx.doi.org/10.1051/e3sconf/202019801036.

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Diatom analysis was conducted on the surface sediments from the estuaries of the new Yongding River and Haihe River in Tianjin. The results showed that the main diatom assemblages in the new Yongding River was Navicula marina-Auliscus caelatus-Coscinodiscus hirosakiensis-Coscinodiscusoculus-iridis and Auliscus caelatus- Coscinodiscusoculus-iridis-Cyclotella meneghiniana-Cyclotella stylorum in the Haihe River. There was saprophilous taxa, Cyclotella meneghiniana, in both estuaries indicating that the two estuaries were polluted to a certain degree.

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Hankey, Graeme J. "Rubeosis Iridis." Practical Neurology 1, no. 1 (2001): 54–55. http://dx.doi.org/10.1046/j.1474-7766.2001.00701.x.

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Cho, Dong-Hyun, Hongrae Kim, and Hae-Dong Kim. "Visibility Analysis of Iridium Communication for SNIPE Nano-Satellite." Journal of the Korean Society for Aeronautical & Space Sciences 50, no. 2 (2022): 127–35. http://dx.doi.org/10.5139/jksas.2022.50.2.127.

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Tanito, Masaki, Sho Ichioka, Yuji Takayanagi, and Akiko Ishida. "Visible Blood Flow in a Case of Rubeosis Iridis." Case Reports in Ophthalmology 12, no. 2 (2021): 473–75. http://dx.doi.org/10.1159/000513795.

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A 72-year-old Japanese woman presented to our hospital with decreased vision. At the initial visit, her best-corrected visual acuity (BCVA) and intraocular pressure (IOP) in her right eye (OD) were 0.02 and 36 mm Hg, respectively. By slit lamp examination, rubeosis iridis was observed on the iris surface. With higher magnification observation, movement of clustered RBCs were clearly observed; the blood drained into episcleral vessels that were connected with the main trunk of rubeosis iridis. She was diagnosed with the neovascular glaucoma secondary to central retinal vein occlusion OD. She un

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Firdaus, Mufti Hatur Rahmah, and Masyitha Wahid. "Fenomena Lokal “Mata Dwiwarna” di Tinambung Polewali Mandar." SAINTIFIK 8, no. 1 (2022): 58–62. http://dx.doi.org/10.31605/saintifik.v8i1.343.

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Fenomena “mata dwiwarna” atau yang dikenal dengan istilah Heterochromia Iridis merupakan kelainan genetik berupa adanya dua warna pada iris mata suatu individu. Heterochromia Iridis termasuk fenomena langka dengan prevalensi 6:1.000 di dunia. Penelitian ini merupakan deskriptif kualitatif dengan desain penelitian studi kasus untuk mengungkap: (1) karakteristik mata dwiwarna di Tinambung Polewali Mandar dan (2) fenotip penyerta mata dwiwarna di Tinambung Polewali Mandar. Pengumpulan data dilakukan melalui observasi dan wawancara. Hasil penelitian mengungkap dua kasus mata dwiwarna (Heterochromi

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Okuwada, Kumi, Ken-ichi Yoshida, Tomoko Saitou, and Atsuhito Sawabe. "Epitaxial growth at PZT/Ir interface." Journal of Materials Research 15, no. 12 (2000): 2667–71. http://dx.doi.org/10.1557/jmr.2000.0383.

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Surface oxidation of an iridium film and the possibility of epitaxial growth of PZT spin-coated film on sputtered iridium were investigated. The free surface on the iridium film oxidized over 400 °C with random orientation. Nevertheless, both the PZT(111)/Ir(111) and PZT(100)/Ir(100) interfaces were realized using the highly oriented iridium layer. These results suggest that PZT nucleation has priority over iridium surface oxidation.

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Ohrt, Vagn. "RUBEOSIS IRIDIS DIABETICA." Acta Ophthalmologica 36, no. 3 (2009): 556–58. http://dx.doi.org/10.1111/j.1755-3768.1958.tb00835.x.

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30

Huang, Rui, and Yong Hong Zhang. "Application of Iridium Communication in Marine Environment Monitoring." Advanced Materials Research 518-523 (May 2012): 1459–63. http://dx.doi.org/10.4028/www.scientific.net/amr.518-523.1459.

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Firstly, the Iridium system and SBD (Short Burst Data) service is introduced. Secondly, the marine environment monitoring system is designed based on Iridium SBD. Finally, the realization of the Iridium SBD transmission subsystem is provided. The main function of the system is to obtain the collected data by the underwater sensor. The information will be uploaded to local control center by iridium communication after fixed time. At the same time the sensor should receive commands from local control center by iridium communication.

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Kascakova, Barbora, Jan Kotal, Larissa Almeida Martins, et al. "Structural and biochemical characterization of the novel serpin Iripin-5 from Ixodes ricinus." Acta Crystallographica Section D Structural Biology 77, no. 9 (2021): 1183–96. http://dx.doi.org/10.1107/s2059798321007920.

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Iripin-5 is the main Ixodes ricinus salivary serpin, which acts as a modulator of host defence mechanisms by impairing neutrophil migration, suppressing nitric oxide production by macrophages and altering complement functions. Iripin-5 influences host immunity and shows high expression in the salivary glands. Here, the crystal structure of Iripin-5 in the most thermodynamically stable state of serpins is described. In the reactive-centre loop, the main substrate-recognition site of Iripin-5 is likely to be represented by Arg342, which implies the targeting of trypsin-like proteases. Furthermor

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Khomutova, E. G., and E. A. Levkevich. "Determination of the iridium micro-concentrations using a kinetic catalytic method." Industrial laboratory. Diagnostics of materials 86, no. 5 (2020): 5–10. http://dx.doi.org/10.26896/1028-6861-2020-86-5-5-10.

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The catalytic effect of iridium on the oxidation of water-soluble porphyrin — 5,10,15,20-tetrakis (4-sulfonatophenyl) porphin (TSPP) with sodium periodate is studied for the first time. A method for determination of the iridium micro-content by the catalytic effect of iridium on the oxidation of water-soluble porphyrin 5,10,15,20-tetrakis (4-sulfonatophenyl) porphin with sodium periodate in a flow-injection system is developed. The lower limit of the determined iridium concentrations is 0.2 × 10–5 μg/ml (P = 0.95), which is lower than that for the methods described in the literature. Optimal c

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Ding, Shengtao, and Weiwei Gao. "Progress on Iridium-Catalyzed Hydrosilylation of Alkenes and Alkynes." Synthesis 52, no. 23 (2020): 3549–63. http://dx.doi.org/10.1055/s-0040-1707239.

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Hydrosilylation of multiple carbon–carbon bonds is a well-known process for the construction of organosilicon compounds. Nowadays, precious metal catalysts, especially platinum complexes, still occupy dominant positions in such processes. However, one important member of the precious metal family, iridium, is less used in this field. As early research mainly focused on developing stable and effective iridium catalysts, recent advances have disclosed the specific efficiency of simple iridium catalytic systems in the synthesis of functional organosilicon compounds. This short review summarizes

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Wu, Ruixia, Weiqiang Liu, Liang Zhou, Xiaokang Li, Kai Chen, and Hongjie Zhang. "Highly efficient green single-emitting layer phosphorescent organic light-emitting diodes with an iridium(iii) complex as a hole-type sensitizer." Journal of Materials Chemistry C 7, no. 9 (2019): 2744–50. http://dx.doi.org/10.1039/c8tc06509h.

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The electroluminescent (EL) performances of a green iridium complex tris(2-(4-tolyl)phenylpyridine)iridium Ir(mppy)<sub>3</sub> were significantly improved by employing another hole-type iridium complex as a sensitizer.

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Merola, Joseph S. "Organic Chemistry at an Iridium Center: Unusual Bond-Making and Bond-Breaking Reactions." Current Organic Chemistry 1, no. 3 (1997): 235–48. http://dx.doi.org/10.2174/1385272801666220124192259.

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<p> In examining the utilization of transition metals in synthetic organic chemistry, iridium is not a metal which comes to the fore. In fact, while its family member, rhodium, sees extensive use for organic synthesis, iridium is pretty much ignored. However, there are quite a number of unusual bond-making and bond-breaking reactions that can occur at an iridium center that suggest that iridium be given a closer look. </p> <p> In this article, the organometallic chemistry of iridium will be reviewed with special attention paid to unusual transformations of organic groups that

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Kim, Cho-Won, and Kyung-Chul Choi. "Potential Roles of Iridoid Glycosides and Their Underlying Mechanisms against Diverse Cancer Growth and Metastasis: Do They Have an Inhibitory Effect on Cancer Progression?" Nutrients 13, no. 9 (2021): 2974. http://dx.doi.org/10.3390/nu13092974.

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Iridoids are glycosides found in plants, having inherent roles in defending them against infection by viruses and microorganisms, and in the rapid repair of damaged areas. The emerging roles of iridoid glycosides on pharmacological properties have aroused the curiosity of many researchers, and studies undertaken indicate that iridoid glycosides exert inhibitory effects in numerous cancers. This review focuses on the roles and the potential mechanism of iridoid glycosides at each stage of cancer development such as proliferation, epithelial mesenchymal transition (EMT), migration, invasion and

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Lee, In Seop, J. M. Park, Hyun Joo Son, et al. "Iridium Oxide as a Stimulating Neural Electrode Formed by Reactive Magnetron Sputtering." Key Engineering Materials 288-289 (June 2005): 307–10. http://dx.doi.org/10.4028/www.scientific.net/kem.288-289.307.

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Implantable neural prostheses form hybrid interfaces with biological constructs, and the application of electrical fields can restore functions of patients with neurological damages. The various stoichiometric compositions of iridium oxide were synthesized using reactive magnetron sputtering. The charge injection behavior of iridium oxide deposited with an O2/Ar ratio of 0.5 was similar to pure Ir. The charge density of iridium oxide increased with increasing O2/Ar ratio, and increasing thickness of iridium oxide.

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Kharchuk, Roman, and Oleksandr Tymoshuk. "Voltammetric Determination of Iridium in Alloys Using Xylenol Orange." Chemistry & Chemical Technology 5, no. 3 (2011): 245–48. http://dx.doi.org/10.23939/chcht05.03.245.

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ÇAKIR MADENCİ, Özlem, Müjgan KAYA TUNA, Özlem HÜRMEYDAN, and Asuman ORÇUN. "Effect of Body Weight Reduction on Serum Irisin Levels: Experimental Study." Turkiye Klinikleri Journal of Internal Medicine 6, no. 3 (2021): 109–16. http://dx.doi.org/10.5336/intermed.2021-85192.

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Duan, Hongying, Wenxiao Liu, Yunpeng Zeng, Wenjing Jia, Huihui Wang, and Yanqing Zhou. "Expression analysis of key enzymes involved in the accumulation of iridoid in Rehmannia glutinosa." Plant Omics, no. 12(02):2019 (September 20, 2019): 102–8. http://dx.doi.org/10.21475/poj.12.02.19.p2221.

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As the traditional Chinese herb, Rehmannia glutinosa (R. glutinosa) has significant effects on health. The main active ingredient of R. glutinosa is iridoid. In this study, root, stem and leaf of R. glutinosa at five different growth stages were collected, the content of iridoid in R. glutinosa was determinated, and the expression of key enzymes in R. glutinosa was analyzed by quantitative real-time PCR (q-PCR). We found that the content of iridoid was increased continuously during the first three growth stages (I-III) of R. glutinosa. It reached the maximum value in root and leaf at growth st

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Dong, Qiuchen, Xiangcheng Sun, and Songbing He. "Iridium Oxide Enabled Sensors Applications." Catalysts 11, no. 10 (2021): 1164. http://dx.doi.org/10.3390/catal11101164.

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There have been numerous studies applying iridium oxides in different applications to explore their proton-change-based reactions since the 1980s. Iridium oxide can be fabricated directly by applying electrodeposition, sputter-coating method, or oxidation of iridium wire. Generally, there have been currently two approaches in applying iridium oxide to enable its sensing applications. One was to improve or create different electrolytes with (non-)electrodeposition method for better performance of Nernst Constant with the temperature-related system. The mechanism behind the scenes were summarize

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Park, Kyoung Sik, Bong Hyun Kim та Il-Moo Chang. "Inhibitory Potencies of Several Iridoids on Cyclooxygenase-1, Cyclooxygnase-2 Enzymes Activities, Tumor Necrosis Factor-α and Nitric Oxide ProductionIn Vitro". Evidence-Based Complementary and Alternative Medicine 7, № 1 (2010): 41–45. http://dx.doi.org/10.1093/ecam/nem129.

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To verify the anti-inflammatory potency of iridoids, seven iridoid glucosides (aucubin, catalpol, gentiopicroside, swertiamarin, geniposide, geniposidic acid and loganin) and an iridoid aglycone (genipin) were investigated within vitrotesting model systems based on inhibition of cyclooxygenase (COX)-1/-2 enzymes, the tumor necrosis factor-α (TNF-α) formation and nitric oxide (NO) production. The hydrolyzed-iridoid products (H-iridoid) with β-gludosidase treatment only showed inhibitory activities, and revealed different potencies, depending on their chemical structures. Without the β-gludosida

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Premovic, Pavle, Budimir Ilic, and Milos Djordjevic. "Iridium anomaly in the cretaceous-paleogene boundary at Højerup (Stevns Klint, Denmark) and Woodside Creek (New Zealand): The question of an enormous proportion of extraterrestrial component." Journal of the Serbian Chemical Society 77, no. 2 (2012): 247–55. http://dx.doi.org/10.2298/jsc110404178p.

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The Cretaceous-Paleogene boundary clays at H?jerup and Woodside Creek show anomalous enrichments of iridium compared with the marine sedimentary rocks. For the average iridium content of 465 ppb in CI chondrite the estimate of the carbonaceous chondritic proportions in the decarbonated iridium-rich boundary layers, based on the integrated iridium fluencies, is about 26% at H?jerup and 65% at Woodside Creek. These proportions are most likely too high due to a significant Ir influx from the nearby marine or continental site to these sections.

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Kotál, Jan, Stéphanie G. I. Polderdijk, Helena Langhansová, et al. "Ixodes ricinus Salivary Serpin Iripin-8 Inhibits the Intrinsic Pathway of Coagulation and Complement." International Journal of Molecular Sciences 22, no. 17 (2021): 9480. http://dx.doi.org/10.3390/ijms22179480.

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Tick saliva is a rich source of antihemostatic, anti-inflammatory, and immunomodulatory molecules that actively help the tick to finish its blood meal. Moreover, these molecules facilitate the transmission of tick-borne pathogens. Here we present the functional and structural characterization of Iripin-8, a salivary serpin from the tick Ixodes ricinus, a European vector of tick-borne encephalitis and Lyme disease. Iripin-8 displayed blood-meal-induced mRNA expression that peaked in nymphs and the salivary glands of adult females. Iripin-8 inhibited multiple proteases involved in blood coagulat

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Robertson, Thomas B. R., Leon J. Clarke, and Ryan E. Mewis. "Rapid SABRE Catalyst Scavenging Using Functionalized Silicas." Molecules 27, no. 2 (2022): 332. http://dx.doi.org/10.3390/molecules27020332.

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In recent years the NMR hyperpolarisation method signal amplification by reversible exchange (SABRE) has been applied to multiple substrates of potential interest for in vivo investigation. Unfortunately, SABRE commonly requires an iridium-containing catalyst that is unsuitable for biomedical applications. This report utilizes inductively coupled plasma-optical emission spectroscopy (ICP-OES) to investigate the potential use of metal scavengers to remove the iridium catalytic species from the solution. The most sensitive iridium emission line at 224.268 nm was used in the analysis. We report t

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Schildwächter, A., and H. Witschel. "Netzhautkryokoagulation bei Rubeosis iridis." Klinische Monatsblätter für Augenheilkunde 193, no. 08 (1988): 146–51. http://dx.doi.org/10.1055/s-2008-1050236.

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Tan, Zizhong, Honglei Qin, Li Cong, and Chao Zhao. "Positioning Using IRIDIUM Satellite Signals of Opportunity in Weak Signal Environment." Electronics 9, no. 1 (2019): 37. http://dx.doi.org/10.3390/electronics9010037.

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In order to get rid of the dependence of the navigation and positioning system on the global navigation satellite system (GNSS), radio, television, satellite, and other signals of opportunity (SOPs) can be used to achieve receiver positioning. The space-based SOPs based on satellites offer better coverage and availability than ground-based SOPs. Based on the related research of Iridium SOPs positioning in the open environment, this paper mainly focuses on the occluded environment and studies the Iridium SOPs positioning technique in weak signal environment. A new quadratic square accumulating

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Chung, Tsai-Wei, Chih-Ning Huang, Po-Chun Chen, Toshihiko Noda, Takashi Tokuda, and Jun Ohta. "Fabrication of Iridium Oxide/Platinum Composite Film on Titanium Substrate for High-Performance Neurostimulation Electrodes." Coatings 8, no. 12 (2018): 420. http://dx.doi.org/10.3390/coatings8120420.

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Electrode materials for neural stimulation have been widely investigated for implantable devices. Among them, iridium and iridium oxide are attractive materials for bio-interface applications due to their desirable stability, electrochemical performance, and biocompatibility. In this study, iridium oxide/platinum (IrOx/Pt) composite films were successfully fabricated on titanium substrates by chemical bath deposition and these films are expected to be used as biocompatible stimulation electrodes. We modified the film compositions to optimize the performances. In addition, these IrOx/Pt composi

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Stoltz, Brian, Samantha Shockley, and J. Hethcox. "Intermolecular Stereoselective Iridium-Catalyzed Allylic Alkylation: An Evolutionary Account." Synlett 29, no. 19 (2018): 2481–92. http://dx.doi.org/10.1055/s-0037-1610217.

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Our lab has long been interested in the development of methods for the creation of enantioenriched all-carbon quaternary stereocenters. Historically, our interest has centered on palladium-catalyzed allylic alkylation, though recent efforts have moved to include the study of iridium catalysts. Whereas palladium catalysts enable the preparation of isolated stereocenters, the use of iridium catalysts allows for the direct construction of vicinal stereocenters via an enantio-, diastereo-, and regioselective allylic alkylation. This Account details the evolution of our research program from incept

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Schenk, Wolfdieter A., and Johanna Leißner. "Oxidative Addition von H2 und HCl an Iridium-Schwefelmonoxid- und Schwefeldioxid-Komplexe/ Oxidative Addition von H2 und HCl an Iridium-Schwefelmonoxid- und Schwefeldioxid-Komplexe." Zeitschrift für Naturforschung B 42, no. 8 (1987): 967–71. http://dx.doi.org/10.1515/znb-1987-0807.

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AbstractSquare planar iridium(I) complexes of sulfur monoxide and sulfur dioxide undergo oxidative addition with dihydrogen and hydrogen chloride. The resulting hydrido-iridium(III) complexes have been characterized by 1H , 31P NMR and IR spectroscopy. The limited stability of the sulfur monoxide derivatives is explained as resulting from decreased back-bonding between iridium and sulfur.

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