Lithium Iodine Battery

High-performance rechargeable lithium-iodine batteries .. by Y Zhao · 2013 · Cited by 253 — Here we report that aqueous lithium-iodine batteries based on the triiodide/iodide redox reaction show a high battery performance.Complementary Results Aritzia Sleepwear, Rechargeable Lithium-Iodine Batteries . - ACS Publications. by Q Zhao · 2015 · Cited by 197 — Typical rechargeable Li-iodine batteries mainly consist of Li anode, organic electrolyte, and iodine/carbon cathode (Figure 1a). We applied a .People also askYou will see more English now.What is lithium iodine battery?What is the life of lithium iodide battery?How does a lithium iodide battery work?What is iodine battery?Feedback Duchas Con Bluetooth, Lithium-ion battery. A lithium-ion or Li-ion battery is a type of rechargeable battery which uses the reversible reduction of lithium ions to store energy.Nominal cell voltage: 3.6 / 3.7 / 3.8 / 3.85 V, LiF.Specific energy: 100–265 Wh/kg (0.360–0.954 .Energy density: 250–693 Wh/L (0.90–2.49 MJ/L)Energy/consumer-price: 7.6 Wh/US$ (US$132/.‎History of the lithium-ion battery · ‎Aqueous lithium-ion battery · ‎Lithium cobalt oxide Adidas Goletto Viii Tf Men's Soccer Cleats, Things to know. ‎Wang - Cited by 131An outlook on lithium ion battery technology - ‎Manthiram - Cited by 987 Edison Professional M 7000 High Power Bluetooth Pa Speaker, Lithium-Ion Battery - Clean Energy Institute. 5 days ago — The lithium-ion (Li-ion) battery is the predominant commercial form of rechargeable battery, widely used in portable electronics and . Everlast Bluetooth Speaker, Images for lithium iodine battery. In the 1970s, the CIA shared research it had done on lithium-iodine batteries with the medical community. This same technology is used in heart pacemakers . Exotic Audio Bluetooth Speaker, How Lithium-ion Batteries Work. Feb 28, 2023 — The movement of the lithium ions creates free electrons in the anode which creates a charge at the positive current collector. The electrical . Aritzia Super Puff Grey, Lithium iodide. Lithium iodide, or LiI, is a compound of lithium and iodine. When exposed to air, it becomes yellow in color, due to the oxidation of iodide to iodine. Football Bluetooth Speaker, Aqueous Lithium-Iodine Battery. by HR Byon · 2014 · Cited by 1 — This aqueous Li–I2 battery demonstrates high storage capacity (~98% of the theoretical capacity), Coulombic efficiency (>99.5%) and cycling performance (>99.5% . Aritzia Super Puff High Gloss, Dual-functional iodine photoelectrode enabling high .. by J Li · 2022 · Cited by 9 — We initially present an integrated photo-assisted rechargeable lithium–iodine (Li–I2) battery system using a hybrid I2/N719-dye/TiO2 composite as a dual- .Used Lithium-Ion Batteries. Jul 13, 2023 — Lithium-ion batteries and devices containing these batteries should NOT go in household garbage or recycling bins. Lithium-ion batteries . Ford Expedition Bluetooth, Understanding the Role of Lithium Iodide in .. by X Bi · 2022 · Cited by 18 — It has been revealed that the anion additive, lithium iodide (LiI), can tune the cell chemistry to form lithium hydroxide (LiOH) as the product .‎Introduction · ‎History of LiI Additives toward. · ‎Potential Applications of LiI in. Ford Transit 2017 Bluetooth, What Are Lithium-Ion Batteries?. Sep 14, 2021 — Lithium-ion is the most popular rechargeable battery chemistry used today. Lithium-ion batteries consist of single or multiple lithium-ion . Furrion Soundbar Bluetooth Pairing, The lithium/iodine battery: a historical perspective. by W Greatbatch · 1992 · Cited by 37 — The lithium/iodine-polyvinylpyridine battery, first implanted 20 years ago, has become the power source of choice for the cardiac pacemaker. Aritzia Super Puff Iridescent, Is Lithium-ion the Ideal Battery?. Despite its overall advantages, lithium-ion has its drawbacks. It is fragile and requires a protection circuit to maintain safe operation. Built into each pack, . Golf Cart Bluetooth Speaker System, Lithium Ion Battery - an overview. A lithium-ion battery is a family of rechargeable battery types in which lithium ions move from the negative electrode to the positive electrode during . Halloween Bluetooth Speaker, Lithium-ion battery, How does it work? - YouTube. 10:38The lithium ions are only located in the "cream" and the electrons are only located in the cookie. Graphite is only electrically conductive .YouTube · Lesics · Apr 12, 201910 key moments in this video Harris Xl-200 Bluetooth, Environmental Fact Sheet: Lithium Batteries. PDFThere are two types of lithium-based batteries, Primary Lithium (metal) and Rechargeable. Lithium Ion. Lithium Primary batteries are starting to replace the .2 pages Harvey Norman Bluetooth Speakers, 18650 LITHIUM ION RECHARGEABLE BATTERIES (2- .. Note - ILLUMAGEAR batteries are only guaranteed to fit and for use in . A 2-pack of IEC-certified, rechargeable 18650 Lithium-Ion batteries with protected .$24.99 · ‎$20.64 4–8 day delivery · ‎In stock Haut Parleur Bluetooth, Oxidizing gas enhancement of lithium-iodine batteries. by M Giammona · 2022 — Oxidizing gas enhancement of lithium-iodine batteries: Towards practical iodine cathodes and viable lithium metal protection strategies for .Iodine may protect batteries | MIT News. Mar 8, 2017 — Researchers at MIT and Carnegie Mellon University are studying a new kind of electrolyte for “self-healing” lithium battery cells, . Aritzia Super Puff Midi, Lithium Ion Battery. Shop Target for lithium ion battery you will love at great low prices. Choose from Same Day Delivery, Drive Up or Order Pickup plus free shipping on orders .Free delivery over $35 · ‎Free 90-day returns Hjc Helmets Bluetooth, How does a lithium-Ion battery work?. Sep 23, 2019 — Instead, lithium-ion batteries typically contain a lithium-metal oxide, such as lithium-cobalt oxide (LiCoO2). This supplies the lithium-ions. Homewerks Bluetooth Fan Manual, THE LITHIUM/IODINE-POLYVINYLPYRIDINE BATTERY. by CF Holmes · 1995 · Cited by 2 — THE LITHIUM/IODINE-PVP SYSTEM. Cell Characteristics. Properties of Thermally Reacted Cathode Material. ENHANCEMENT OF PERFORMANCE THROUGH ELECTROLYTE . Honda Hrv Bluetooth, Lithium Iodide. Lithium Iodide is generally immediately available in most volumes. High purity, submicron and nanopowder forms may be considered. Hydrate or anhydrous forms . Hoverboard Led Bluetooth, How lithium-ion batteries works? | SCiB™ Rechargeable .. lithium-ion battery is composed of 1) the anode and the cathode; 2) a separator between the two electrodes; and 3) an electrolyte that fills the remaining space . Aritzia Super Puff On Sale, Solid Electrolytes for Li-ion Batteries. Solid electrolytes conduct lithium ions at room temperature and can potentially replace conventional organic electrolytes, which are flammable and toxic. In .NANOMYTE® SOX-10: “Fine LLT.NANOMYTE® SOX-20: Fine “LLZ. I Pilot Bluetooth Remote, Batteries - Why Lithium-ion?. Compared with traditional battery technology, lithium-ion batteries charge faster, last longer, and have a higher power density for more battery life in a . Ilive Indoor/outdoor Bluetooth Speakers, Lithium-ion Batteries. What's Lithium-ion Battery? . Lithium-ion batteries generate DC power by utilizing chemical reactions. When batteries are discharged and charged, lithium ions . Aritzia Super Puff Red, Beyond lithium: A promising cathode material for .. Feb 9, 2023 — However, the cycling performance and capacity of magnesium batteries need to improve if they are to replace lithium-ion batteries. To this end, .Lithium iodide 99.9 trace metals 10377-51-2. Lithium iodide is widely used as an electrolyte additivein dye-sensitized solar cells and Li-S batteries, as it enables long cyclelife.Molecular Weight: 133.85NACRES: NA.23 Infiniti Bluetooth, Types of Lithium Batteries: Lithium Cell Chemistry. Of all the various types of lithium-ion batteries, three cell chemistry types emerge as widely used in on- and off-highway electric vehicles: lithium . Jbl Charge 3 Bluetooth Pairing, Recycled Lithium-Ion Batteries Can Perform Better Than .. Feb 1, 2022 — But recycling lithium-ion batteries has only recently made commercial inroads. Battery manufacturers have hesitated over concerns that recycled . Jbl Xtreme 3 Bluetooth Reset, Lithium-ion batteries - Australian Academy of Science. Mar 15, 2016 — The most common lithium-ion cells have an anode of carbon (C) and a cathode of lithium cobalt oxide (LiCoO2). In fact, the lithium cobalt oxide . Jeep Wrangler Bluetooth Setup, AA Rechargeable Lithium Batteries 4Packs, 3000mWh 1.5 .. Amazon.com: AA Rechargeable Lithium Batteries 4Packs, 3000mWh 1.5V Li-ion AA Battery Rechargeable AA Lithium Batteries, USB 2H Fast Charge Type C Cable 1500 .Battery Capacity: ‎2000 Milliampere Hour (mAh)Batteries: ‎4 AA batteries required. (included)Battery Weight: ‎18 GramsManufacturer: ‎Ziyokthy Rating: 4.5 · ‎86 reviews · ‎$24.99 · ‎30-day returns · ‎In stock Jensen Camper Radio Bluetooth Pairing, Lithium Ion - Batteries - Electrical. Results 1 - 24 of 48 — Get free shipping on qualified Lithium Ion Batteries products or Buy Online Pick Up in Store today in the Electrical Department.90-day returns Jvc Kd R330 Bluetooth, How Lithium-ion Batteries Work | HowStuffWorks. Feb 11, 2021 — A typical lithium-ion battery can store 150 watt-hours of electricity in 1 kilogram of battery. A NiMH (nickel-metal hydride) battery pack can . Jvc Kd-r320 Bluetooth Pairing, The invention of rechargeable batteries - WIPO. Akira Yoshino, 2019 Nobel laureate . lithium-ion battery. . In 2019, Dr. Akira Yoshino, Dr. Stanley Whittingham and Dr. John Goodenough were awarded the Nobel . Jvc Kdr330 Bluetooth, Scientists discover new electrolyte for solid-state lithium .. Feb 14, 2022 — As a result, solid-state lithium-ion batteries, which consist of entirely solid components, have become increasingly attractive to scientists . Kawaii Bluetooth Speaker, LITHIUM-ION BATTERIES. PDFby MS Whittingham · 2019 · Cited by 5 — Goodenough,. M. Stanley Whittingham, and Akira Yoshino the Nobel Prize in Chemistry 2019, for the development of lithium-ion batteries.The History of the Lithium-Ion Battery. Oct 11, 2019 — The History of the Lithium-Ion Battery . During the oil crisis in the 1970s, Stanley Whittingham, an English chemist working for Exxon mobile at . Kd-r520 Bluetooth Pairing, Lithium Ion Battery Advantages & Disadvantages. One advantage of lithium ion batteries is that there is no requirement for this they are supplied operational and ready to go. Variety of types available: There . Key Tracker Wireless Bluetooth, Lithium-ion Battery Advantages. Lithium Battery Advantages · You'll Run Out of Adventures Before You Run Out of Power · Explore the Benefits of Lithium Batteries · Lithium is Long-Lasting. Kirby Bluetooth Speaker, The Lithium/Iodine-Polyvinylpyridine Pacemaker Battery. by C Holmes · 2007 · Cited by 35 — The lithium/iodine-polyvinylpyridine (PVP) battery has been in clinical use as a power source for pacemakers for 35 years. Since 1972, literally millions of . Langsdom Bluetooth Headset, What's the Difference Between Lithium and Lithium-ion (Li- .. Feb 20, 2020 — The biggest difference between Lithium batteries and Lithium-ion batteries is that Lithium batteries feature a single cell construction, meaning . Levitating Death Star Bluetooth Speaker, To Improve Lithium Batteries: Just Add Iodine And Water. Jul 8, 2013 — Researchers have developed a lithium-iodine battery system that has double the energy density of conventional lithium-ion batteries. Lg Tone Style Bluetooth Wireless Stereo Headset Hbs-sl6s, The lithium–iodine solar flow battery: (a) device schematic .. Download scientific diagram | The lithium–iodine solar flow battery: (a) device schematic, (b) the energy diagram of the photoassisted charging, . Lg Tv Bluetooth Service Needs To Be Initialized, Lithium Iodide Battery. Lithium iodide batteries are the major energy storage for medical implants, such as pacemakers. These batteries are included in the primary energy storage . Aritzia The Powder Parka, Lithium Iodide Facts, Formula, Equations, Properties, Uses. Iodide-based electrolytes containing lithium are potentially used in high-temperature batteries and long-life batteries, including artificial pacemakers.EC Number: Lithium iodide: 233-822-5 (6L)lith.CAS Number: Lithium iodide: 10377-51-2 (6L)l. M211 Portable Bluetooth Label Printer, 4 Benefits of Lithium-ion Batteries - EnergyLink. Jun 16, 2021 — Lithium-ion batteries provide their own unique advantages like high energy density, low maintenance, performance and longevity, and versatility.Lithium Ion Batteries. Lithium ion batteries supply power to many kinds of devices, including smart phones, laptops, scooters, e-cigarettes, smoke alarms, and toys. Magnetic Bluetooth Earbuds, Lithium Ion batteries | Lithium Polymer - Harding Energy. The expected cycle life of a Li-Ion in an application is about 500+ full charge and discharge cycles. Standard Cell Sizes Available; Standard and Custom PCM .Operational Battery Voltage: 4.2 to 2.7 VoltsPower Density: 245 to 430 W/KgEnergy Density: 185 to 220 Wh/LSpecific Energy: 100 to 158 Wh/Kg Marnana Bluetooth Headset User Manual, Solid state battery breakthrough could double the density .. Nov 26, 2019 — The new technology uses a solid polymer material, weakly bonded to the lithium-ion, to replace the volatile liquid solvents typically used as . Merkury Bluetooth Speaker Instructions, Rechargeable Lithium Ion Battery for iLIVING i3 Mobility .. Rechargeable Lithium Ion Battery Exclusively designed for use on the iLIVING i3 Foldable Mobility Scooter Approved for airline, bus, cruise, .$550.00 · ‎In stock Merkury Speaker Bluetooth Pairing, Untitled. Lithium iodine batteries Web15 mei 2018 · The Li-iodine battery with . 2017 · An all solid-state rechargeable lithium-iodine thin film battery using LiI(3 . Midi Keyboard Bluetooth, What is a Solid-state Battery?. A lithium-ion battery applied at smartphones, power tools and EVs uses liquid electrolyte solution. On the other hand, a solid-state battery uses solid . Aritzia Vegan Leather Leggings, Lithium-ion Battery Production and Testing. Li-ion Battery Production Process · Mixing. Active materials, conductive auxiliary agents, polymer binders, and organic solvents are mixed together to form an . Miller Bluetooth Foot Pedal, How does a lithium-ion battery work?. Oct 4, 2021 — Lithium-ion batteries, like alkaline dry cell batteries used in clocks and TV remote controls, generate electricity by the movement of ions. Minn Kota I Pilot Bluetooth Remote, What's the Lifespan of Your Lithium-Ion Battery?. How long do lithium batteries last? Their lifespans aren't impacted by sitting on the charger for too long. It simply cuts off power to the battery whenever . Moto G Power Bluetooth Issues, Lithium-ion batteries: why and when do they pose a risk of .. Feb 13, 2023 — In the event of a lithium-ion battery failure where outgassing is observed, it is very important to move away from the battery to avoid harmful .LiS 2650 LITRONIK Lithium Iodine High Energy Battery - MST. PDFHighest volumetric energy densities. • Lowest self-discharge rates. • Solid-state battery. • Long operational safety. LITRONIK. Lithium Iodine. Motorola Bluetooth Mic Apx 6000, Solid-state batteries: how they work. A solid-state battery is essentially battery technology that uses a solid electrolyte instead of liquid electrolytes which are instead behind lithium-ion . Motorola Xpr 3500e Bluetooth, File:Lithium-Iodine Battery - Flickr - The Central Intelligence .. In the 1970s, the CIA shared research it had done on lithium-iodine batteries with the medical community. This same technology is used in heart pacemakers . Aritzia Wilfred Ganna Jacket, What Happens If A Lithium-Ion Battery Gets Punctured In .. Dec 6, 2021 — A punctured lithium-ion battery can lead to a serious fire in some cases. Potent electrolytes can leak through the hole, often creating chemical . Mxd337bt Bluetooth Pairing, Rechargeable Lithium-Iodine Batteries with .. Aug 6, 2015 — Rechargeable multivalent ion (Al3+, Mg2+ and Zn2+) batteries provide a viable alternative to lithium ion batteries because of the supply .Lithium iodide. Lithium iodide, or LiI, is a compound of lithium and iodine. When exposed to air, it becomes yellow in color, due to the liberation of the iodine. Additional .Boiling point: 1171°CMolar mass: 133.845 g/molMelting point: 459°CSolubility in water: 151 g/100mL(25°C)Lithium/Iodine Battery - Chemistry Courses - StudyLib. Lithium/Iodine Battery - Chemistry Courses. advertisement. Lithium Batteries for Implantable Biomedical Devices – Chemistry and Applications Presented at .Lithium — Iodine Batteries. by TR Crompton · 1982 · Cited by 1 — The Catalyst Research Corporation has since 1972 been the supplier of the lithium-iodine battery intended initially for cardiac pacemakers and other .Practical Challenges and Future Perspectives of All-Solid- .. by S Xia · 2019 · Cited by 541 — Lithium-ion batteries are one of the most promising energy- storage devices for their high energy density, superior cycling stability, and light weight.Brief History of Early Lithium-Battery Development. PDFby MV Reddy · 2020 · Cited by 266 — electrolytes for lithium-ion batteries. Keywords: intercalation compounds; lithium batteries; electrolyte; cathode; anode. 1. Introduction.De novo synthesis of a covalent organic framework .. by S SAURABH · 2022 — De novo synthesis of a covalent organic framework featuring high iodine uptake for Li-ion battery: A new route for transforming hazardous into treasure. SAURABH .High-performance rechargeable lithium-iodine batteries .. by Y Zhao · 2013 · Cited by 253 — The high solubility of triiodide/iodide redox couples results in an energy density of B0.33 kWh kgА 1, approximately twice that of lithium-ion batteries. The.FMCLithium.com Chemicals TRU Group Lithium & Brine. We have worked extensively in lithium-ion batteries - like li-ion cells, lithium batteries, compounds, ceramics, lithium metal / alloys, and battery parts .Waterpik® ION - Maximum Performance. Cordless .. With the ION Water Flosser, you can say GOOD-BYE to cord clutter and outlets. Powered by a lithium ion battery that lasts up to 4 weeks on a single charge.Lithium market news, analysis and price data. Lithium is a critical battery raw material in the electric vehicle . Battery Cost Index to gain in-depth insights into the cost of lithium-ion cell .Lithium-ion batteries to blame in 2 NYC fires Friday, fire .. Aug 13, 2023 — OZONE PARK, Queens (WABC) — Fire marshals say lithium-ion batteries caused two fires on Friday in New York City – one of the deadly.3D simulation of sodium-iodine secondary batteries for .. Due to their sustainability and high efficiency, which is comparable to Li-Ion –batteries, mid-temperature sodium-iodine batteries are a promising candidate for .When will lithium batteries get cheaper. Results 1 - 48 of 3000+ — Lithium Ion Battery E Bike Bike Parts for Sale 2023: Buy Bike used spare part accessory Bikes, Bike Parts at cheap price 30000 .The Role of Solid Electrolyte Interphase Enabler in Li Metal .. by CC Su · 2021 — To facilitate the massive commercialization of electric vehicles, it is imperative to enhance the energy density of the state-of-the-art lithium battery .LIITOKALA LII-PD2 Smart Battery for 18650 26650 21700 .. LIITOKALA LII-PD2 Smart Battery for 18650 26650 21700 NiMH Lithium . DC18RC Li-Ion Battery Charger with LED Screen for Makita 14.4V-18V Lithium. Sponsored.$19.00 · ‎Free 90-day returns · ‎In stockMaterials for Lithium-Ion Batteries - Page 4 - Google Books Result. Christian Julien, ‎Z. Stoynov · 2012 · ‎Technology & EngineeringResearch into lithium batteries began in the 1950s when it was noticed that . The lithium-iodine battery had been used to power more than 4 million .Graphite Is The Big Winner In A Multi-Trillion Dollar EV Boom. 6 days ago — Graphite makes up 95-99% of the anode (negative electrode) material in lithium-ion batteries, in varying natural and synthetic combinations.Self-assembled monolayers direct a LiF-rich interphase .. by Y Liu · 2022 · Cited by 249 — High–energy density lithium (Li) metal batteries (LMBs) are . that shows greater overall stability and enhanced lithium ion transport.PNNL: Energy Storage: Publications. While modern battery technologies, including lithium ion (Li-ion), increase the technical and economic viability of grid energy storage, they also present .19.5 Commercial Galvanic Cells. Lithium–Iodine Battery ; Equation 19.84. cathode: I 2(s) + 2e − → 2I −(LiI) ; Equation 19.85. anode: 2Li(s) → 2Li +(LiI) + 2e .Journal of Alloys and Compounds. PDFby A El Kharbachi · 2019 · Cited by 162 — The Li-ion Batteries (LIBs) are the most advanced technologies for electrochemical storage and conversion and undergoing a market expansion with .Sampath's home page. . Resin as an Efficient Lithium Storage Anode Material for 3.6 V Li-Ion Batteries . as Efficient Electrode Material for Rechargeable Lithium Ion BatteryTuning Ion Transport at the Anode-Electrolyte Interface via .. · Translate this pageFeb 5, 2023 — Rechargeable aqueous zinc-iodine batteries (ZIBs) are considered a promising . interface towards durable and safe Li-ion batteries.The Nobel Prize in Chemistry awards the creation of a .. Oct 9, 2019 — Lithium-ion batteries are used globally to power the portable electronics that we use to communicate, work, study, listen to music and .SQM's Earnings Drop as Lithium Revenue Falls 21%. 19 hours ago — EVs are powered by lithium-ion batteries. SQM's key numbers. Metric, Q2 2022, Q2 2023, Change. Revenue, $2.60 billion, $2.05 billion, ( .Global Energy Storage for Microgrid | PMI. Global Energy Storage for Microgrid Market, By Type (Li-ion Battery and Lead Acid Battery), By Applications (Peak Hour Shaving, Volt Ampere Reactive . Rating: 3.8 · ‎30 reviewsWhat Can I Bring? Medical | Transportation Security .. Devices containing lithium metal or lithium ion batteries must be carried in carry-on baggage. Most other consumer electronic devices containing batteries .900 mg lithium safe. SONY ICR 18650 10,000mAh Lithium Ion Battery / Battery. Varlonpan 18650 3.7v 8800mAH Lithium-ion Li-on. 3.7V 26650 6800mAH Rechargeable Li-ion Battery .Battery Reference Book - Page 9-17 - Google Books Result. Thomas Roy Crompton · 2000 · ‎Technology & Engineering9.11 Lithium - iodine primary batteries 9.11.1 Pacemaker batteries Since 1972 , the Catalyst Research Corporation ( USA ) has been the supplier of the .The Reaction of Organoboranes with Lithium Salts .. by T Baba · 1983 · Cited by 13 — The Reaction of Organoboranes with Lithium Salts of Trisylhydrazones of Cycloalkanones Followed by Treatment with Iodine. Baba Tsutomu 1 , Avasthi Kamlakar 1 .Canada Lithium makes friendly bid to acquire iodine miner .. Dec 4, 2013 — Canada Lithium Corp (TSE:CLQ) (OTC:CLQMF) has agreed to acquire iodine . The commodity, an essential component in lithium-ion batteries, .Lithium-Ion Batteries: Advanced Materials and Technologies. Xianxia Yuan, ‎Hansan Liu, ‎Jiujun Zhang · 2016 · ‎Technology & EngineeringThe rechargeable lithium - ion battery is an ultimate representation of solid - state chemistry in action that started with the discovery of intercalation .Li-ion battery diagram stock illustration. Jul 31, 2017 — Li-ion battery diagram. Vector illustration. Rechargeable battery in which lithium ions move from the negative electrode to the positive .$12.00Lithium iodide | ILi. Structure, properties, spectra, suppliers and links for: Lithium iodide, 10377-51-2, 29911-74-8.The $23 Billion Graphite Boom Is Flying Under Wall .. 6 days ago — Any given lithium-ion battery can contain 15X more graphite than lithium, making up some 25% of a battery's total volume. It's also why Elon .