ces The reactivity of alkenyl boron reagents in catalytic reactions: recent advances and perspectives By pubs.rsc.org Published On :: Org. Chem. Front., 2024, Advance ArticleDOI: 10.1039/D4QO01703J, Review ArticleYa-Li Feng, Bo-Wen Zhang, Youzhi Xu, Shengnan Jin, Daniele Mazzarella, Zhong-Yan CaoRecent advances focusing on novel reactivity of alkenyl boron reagents in polar or radical pathways within catalytic reactions by employing transition metal catalysis, organocatalysis have been summarized and discussed.To cite this article before page numbers are assigned, use the DOI form of citation above.The content of this RSS Feed (c) The Royal Society of Chemistry Full Article
ces Visible-light excited copper activating unactivated alkyl iodides for radical addition/cyclization to access oxindole derivatives By pubs.rsc.org Published On :: Org. Chem. Front., 2024, 11,6380-6384DOI: 10.1039/D4QO01329H, Research ArticleHang Luo, Fangnian Yu, Luqing LinThe photocopper catalyst facilitates halogen atom transfer to give unactivated alkyl radicals, which is critical for achieving radical cyclization in the absence of an exogenous photocatalyst.The content of this RSS Feed (c) The Royal Society of Chemistry Full Article
ces Phosphine-controlled divergent reactions of MBH-carbonates with azaheptafulvenes: access to o-anilinyl diene and benzazepine derivatives By pubs.rsc.org Published On :: Org. Chem. Front., 2024, 11,6418-6425DOI: 10.1039/D4QO01298D, Research ArticleWei Hao, Yiwen Zhang, Xiao Han, Zhen Wang, Weijun YaoA phosphine controlled divergent cascade reaction of MBH-carbonates with azaheptafulvenes was disclosed. PPh3 provided o-aminophenyl diene while PCy3 offered benzazepine derivative through formal [8 + 3] annulation/ring contraction cascade.The content of this RSS Feed (c) The Royal Society of Chemistry Full Article
ces Carbonate-assisted selectively deoxygenative cross-coupling reaction between aryl and aliphatic aldehydes: a straightforward route to access α-alkylated aryl ketones By pubs.rsc.org Published On :: Org. Chem. Front., 2024, 11,6510-6517DOI: 10.1039/D4QO01517G, Research ArticleYu Sun, Yi Wang, Zhijun ZuoA novel reductive cross-coupling reaction of two different aldehydes for rapidly assembling α-alkylated aryl ketones has been developed. The inexpensive carbonate served not only as a base but also as an efficient electron donor.The content of this RSS Feed (c) The Royal Society of Chemistry Full Article
ces Shining light on sulfonium salts and sulfur ylides: recent advances in alkylation under photoredox catalysis By pubs.rsc.org Published On :: Org. Chem. Front., 2024, 11,6573-6588DOI: 10.1039/D4QO01644K, Review ArticleZhe Jin, Tingwei Yu, Hui Wang, Penghao Jia, You HuangRecent advancements in photoredox alkylation with sulfur ylides, sulfonium salts and related analogues are summarized in this review.The content of this RSS Feed (c) The Royal Society of Chemistry Full Article
ces Recent advances in asymmetric synthesis of chiral benzoheterocycles via Earth-abundant metal catalysis By pubs.rsc.org Published On :: Org. Chem. Front., 2024, 11,6534-6557DOI: 10.1039/D4QO01686F, Review ArticleJinhui Cai, Wenting Zhang, Usman Muhammad, Weishuang Li, Yanjun XieThis review mainly focus on the assembly of chiral benzoheterocycles, such as dihydrobenzofurans, chromans, indolines, tetrahydroquinolines, etc., via Earth-abundant metal-catalyzed (Cu, Fe, Ni, and Ti) asymmetric synthesis in the last few decades.The content of this RSS Feed (c) The Royal Society of Chemistry Full Article
ces LiTMP-LiBr complex-induced lateral lithiation and cross ester condensation: direct access to isocoumarins from 2-methoxy o-toluate esters By pubs.rsc.org Published On :: Org. Chem. Front., 2024, Advance ArticleDOI: 10.1039/D4QO01678E, Research Article Open Access   This article is licensed under a Creative Commons Attribution-NonCommercial 3.0 Unported Licence.Mintu Rehman, Sajib Daimary, Rasajna Madhusudhana, Rajendar GoretiLiTMP-LiBr complex promotes cross-ester coupling of 2-methoxy o-toluate esters to directly yield isocoumarin is demonstrated. Method applied to many natural product precursors including synthesis of (+)- and (−)-lunatinins.To cite this article before page numbers are assigned, use the DOI form of citation above.The content of this RSS Feed (c) The Royal Society of Chemistry Full Article
ces Copper-catalyzed alkynyldisulfuration of arynes: an efficient access to unsymmetrical disulfides By pubs.rsc.org Published On :: Org. Chem. Front., 2024, Accepted ManuscriptDOI: 10.1039/D4QO01844C, Research ArticleShuai Huang, Yumin Zhang, Yuekai Li, Chen-Ho Tung, Xin Li, Zhenghu XuThis article investigates a copper-catalyzed alkynyl disulfuration reaction of aryne formed in situ to synthesize o‑alkynyl aryl disulfides. The transformation proceeds through the in situ generation of aryne, followed by...The content of this RSS Feed (c) The Royal Society of Chemistry Full Article
ces DABSO-Mediated Pummerer Reaction Enables One-Pot Synthesis of Pyrroloquinolines for Accessing Marinoquinolines: Mechanistic, Photophysical and Pharmacological Investigations By pubs.rsc.org Published On :: Org. Chem. Front., 2024, Accepted ManuscriptDOI: 10.1039/D4QO01512F, Research ArticleRahimuddin Khan, Dipun Kumar Penthi, Aditi Chatterjee, Chandrakanta Sahoo, Shanti Gopal Patra, Viswanathan Arun Nagaraj, Tabrez KhanA new one-pot acid- and exogenous oxidant-free synthesis of pyrrolo[2,3-c]quinolines has been developed. The strategy involves chemoselective reduction of the 3-(2-nitrophenyl)-1H-pyrroles (pyrrolnitrin derivatives) and subsequent DABSO-facilitated Pummerer reaction in the...The content of this RSS Feed (c) The Royal Society of Chemistry Full Article
ces Recent advances in carbon atom addition for ring-expanding single-atom skeletal editing By pubs.rsc.org Published On :: Org. Chem. Front., 2024, Advance ArticleDOI: 10.1039/D4QO01806K, Review ArticleTing Yuan, Lei ShiThis review focuses on recent advances in carbon atom addition for ring-expanding single-atom skeletal editing.To cite this article before page numbers are assigned, use the DOI form of citation above.The content of this RSS Feed (c) The Royal Society of Chemistry Full Article
ces Hemilabile P,N-Ligand-Assisted Gold Catalyzed Hiyama Allylation to Access Allylarenes and 1,4-Dienes Derivatives By pubs.rsc.org Published On :: Org. Chem. Front., 2025, Accepted ManuscriptDOI: 10.1039/D4QO01879F, Research ArticleYuanhao He, Wanping Ma, Yu Zhong, Yanfei Hu, Mingou Li, Fen Zhao, Zhonghua Xia, Baomin FanOxidant-free gold-catalyzed reactions are emerging as a novel synthetic tool for organic transformations. Here in, we reported a hemilabile P,N-ligand-assisted gold-catalyzed Hiyama cross coupling reaction of aryl and alkenyl iodides...The content of this RSS Feed (c) The Royal Society of Chemistry Full Article
ces Mechanistic insights into rhodium-catalyzed C−H activation and annulation using vinyl acetate to access cinnolines and cinnolin-4(1H)-ones By pubs.rsc.org Published On :: Org. Chem. Front., 2025, Accepted ManuscriptDOI: 10.1039/D4QO01734J, Research ArticleYuqin Wang, Yiling Zeng, Ya-Nan Tian, Zheng Liu, Jinhua Wang, Shuyou Chen, Shiqing LiTransition metal-catalyzed C−H activation and annulation involving vinyl acetate remains a significant challenge, and the mechanistic process following vinyl insertion is ambiguous. Herein, we report the Rh(III)-catalyzed two-fold C−H activation...The content of this RSS Feed (c) The Royal Society of Chemistry Full Article
ces Telangana pharmaceutical industries logged 97 major fire accidents in past decade: Fire Services Director-General Y. Nagi Reddy By www.thehindu.com Published On :: Thu, 07 Nov 2024 18:58:18 +0530 The new government would like to decentralise and set up pharma villages, in 10 clusters, Special Chief Secretary Jayesh Ranjan said Full Article Telangana
ces CM Revanth Reddy announces resolve to complete pending projects of Palamuru district By www.thehindu.com Published On :: Sun, 10 Nov 2024 23:43:29 +0530 Criticises opposition parties for trying to create obstacles in district development Full Article Telangana
ces Wriddhiman Saha announces retirement from cricket after this year's Ranji Trophy By www.thehindu.com Published On :: Mon, 04 Nov 2024 11:03:14 +0530 Veteran cricketer Wriddhiman Saha announces retirement, last season in Ranji Trophy, ending a cherished journey in cricket Full Article Cricket
ces Ranji Trophy | Powerful Tamil Nadu holds all the aces against Assam By www.thehindu.com Published On :: Tue, 05 Nov 2024 18:28:26 +0530 Sai Kishore’s return boosts the visiting team; Ghadigaonkar & Co. will have to rack up big scores to provide meaningful competition Full Article Cricket
ces Defeat negative marking in civil services exam By www.thehindu.com Published On :: Sun, 11 Oct 2015 17:00:14 +0530 Here is a concrete strategy to approach the exam. Full Article Careers
ces Headstart to success By www.thehindu.com Published On :: Sun, 25 Oct 2015 17:00:04 +0530 You don’t have to wait till Class XI to start preparing for IIT-JEE. Here’s why. Full Article Careers
ces Civil services aspirants at sea By www.thehindu.com Published On :: Fri, 11 Dec 2015 00:00:00 +0530 Full Article Tamil Nadu
ces Legal process outsourcing as a career By www.thehindu.com Published On :: Sun, 21 Feb 2016 15:41:38 +0530 LPO offers diverse avenues for law graduates with strong communication and analytical skills. Full Article Careers
ces Civil services club in colleges? By www.thehindu.com Published On :: Sun, 10 Apr 2016 17:00:44 +0530 Want to become a bureaucrat? Here’s a lowdown on all that you need to know. Full Article Education Plus
ces ‘Anyone can crack civil services exam’ By www.thehindu.com Published On :: Sun, 17 Apr 2016 17:00:01 +0530 “I prefer the term ‘civil servant’ to the term ‘bureaucrat’ because it clearly spells out that the ‘master’ is the common man.’’ Full Article Education
ces Acing the civil services exam By www.thehindu.com Published On :: Sun, 15 May 2016 17:00:01 +0530 Proper planning and effective time management can help you crack the exam in the first attempt. Some tips. Full Article Education Plus
ces History resurfaces By www.thehindu.com Published On :: Thu, 14 Jul 2016 16:35:32 +0530 City archaeologists and history students discover fragments of burial urns, ring stands belonging to the megalithic period in Sulapuram Village near Madurai Full Article History & Culture
ces A comparative study on the thermal runaway process mechanism of a pouch cell based on Li-rich layered oxide cathodes with different activation degrees By pubs.rsc.org Published On :: RSC Adv., 2024, 14,35074-35080DOI: 10.1039/D4RA06355D, Paper Open Access   This article is licensed under a Creative Commons Attribution-NonCommercial 3.0 Unported Licence.Wei Quan, Jinghao Liu, Jinhong Luo, Hangfan Dong, Zhimin Ren, Guohua Li, Xiaopeng Qi, Zilong Su, Jiantao WangLi-rich layered oxide (LLO) is regarded as one of the most promising candidates for the next-generation batteries.The content of this RSS Feed (c) The Royal Society of Chemistry Full Article
ces Comparing diverse extraction methodologies to infer the performance of 1,8-cineole extraction from Eucalyptus cinerea: process optimization, kinetics, and interaction mechanisms By pubs.rsc.org Published On :: RSC Adv., 2024, 14,35529-35552DOI: 10.1039/D4RA06050D, Paper Open Access   This article is licensed under a Creative Commons Attribution-NonCommercial 3.0 Unported Licence.Divya Baskaran, Madhumitha Sathiamoorthy, Ramasamy Govindarasu, Hun-Soo ByunDifferent extraction techniques were used to extract 1,8-cineole from Eucalyptus cinerea leaves, and their performance efficiency was evaluated through optimization and kinetic studies.The content of this RSS Feed (c) The Royal Society of Chemistry Full Article
ces Chronological effects of oxygen on the structural transformations of polyacrylonitrile fibers during the rapid thermal stabilization process By pubs.rsc.org Published On :: RSC Adv., 2024, 14,35560-35567DOI: 10.1039/D4RA06327A, Paper Open Access   This article is licensed under a Creative Commons Attribution 3.0 Unported Licence.Shiyang Li, Liang Chen, Jie Liu, Yixin Li, Jian Tang, Rongchao Jiang, Xiaoxu WangThe effects of oxygen on the structure changes of PAN fibers during the rapid thermal stabilization are chronological, including thermal-driven dehydrogenation, oxidation and cyclization in the shorter, intermediate and longer periods, respectively.The content of this RSS Feed (c) The Royal Society of Chemistry Full Article
ces Advances in quinoxaline derivatives: synthetic routes and antiviral efficacy against respiratory pathogens By pubs.rsc.org Published On :: RSC Adv., 2024, 14,35400-35423DOI: 10.1039/D4RA04292A, Review Article Open Access   This article is licensed under a Creative Commons Attribution 3.0 Unported Licence.Fateme Dehnavi, Malihe Akhavan, Ahmadreza Bekhradnia3D lung visualization showing COVID-19 infection areas alongside respiratory pathogens. The antiviral drug structure and comparison of healthy vs. infected lungs demonstrate how the drug could restore lung health.The content of this RSS Feed (c) The Royal Society of Chemistry Full Article
ces Reaction of unsymmetrical α-bromo-1,3-diketones with N-substituted thioureas: regioselective access to 2-(N-arylamino)-5-acyl-4-methylthiazoles and/or rearranged 2-(N-acylimino)-3-N-aryl-4-methylthiazoles By pubs.rsc.org Published On :: RSC Adv., 2024, 14,35585-35600DOI: 10.1039/D4RA05436A, Paper Open Access   This article is licensed under a Creative Commons Attribution-NonCommercial 3.0 Unported Licence.Ranjana Aggarwal, Shilpa Sharma, Naman Jain, Dionisia Sanz, Rosa M. Claramunt, Patricia Delgado, M. Carmen TorralbaHantzsch's [3 + 2] cyclic condensation of α-bromo-1,3-diketones with N-substituted thioureas.The content of this RSS Feed (c) The Royal Society of Chemistry Full Article
ces Distance-based paper microfluidic devices for rapid visual quantification of heavy metals in herbal supplements and cosmetics By pubs.rsc.org Published On :: RSC Adv., 2024, 14,36142-36151DOI: 10.1039/D4RA05358C, Paper Open Access   This article is licensed under a Creative Commons Attribution-NonCommercial 3.0 Unported Licence.Yanawut Manmana, Mirek Macka, Nantana NuchtavornThe ion exchange paper shows strongly retain anionic metallochromic reagents, enabling clear endpoint detection on DμPADs. This method allows rapid heavy metal screening in real samples, with the predeposited reagents stable for at least 2 months.The content of this RSS Feed (c) The Royal Society of Chemistry Full Article
ces Developing Ni0.5Zn0.5Fe2O4 ferrite with controlled particle size and morphology through optimized processing conditions of low energy solid state reaction By pubs.rsc.org Published On :: RSC Adv., 2024, 14,36264-36272DOI: 10.1039/D4RA07076C, Paper Open Access   This article is licensed under a Creative Commons Attribution-NonCommercial 3.0 Unported Licence.Sarah Baayyad, Fatima-Zahra Semlali, El Kébir Hlil, Tarik Mahfoud, Hassan El Moussaoui, Mounir El AchabySoft magnetic materials, like Ni0.5Zn0.5Fe2O4, require high temperatures and regulated environments for their manufacture and processing, which can be highly energy intensive.The content of this RSS Feed (c) The Royal Society of Chemistry Full Article
ces Surat’s diamond factories lose sparkle as global recession hits sector By www.thehindu.com Published On :: Tue, 13 Aug 2024 05:20:00 +0530 Since 95% of polished diamonds are exported, global factors always affect the sale of the precious stones, said experts from Surat Full Article Gujarat
ces 1998 murder case of ex-Bihar Minister: Supreme Court sentences two persons to life imprisonment By www.thehindu.com Published On :: Thu, 03 Oct 2024 11:43:54 +0530 A bench of Justices Sanjiv Khanna, Sanjay Kumar and R. Mahadevan partially set aside the Patna High Court verdict acquitting all the accused and asked convicts Mantu Tiwari and ex-MLA Shukla to surrender within 15 days Full Article Bihar
ces Empowerment campaign enhances access of differently-abled persons in Barmer By www.thehindu.com Published On :: Wed, 23 Oct 2024 22:45:45 +0530 The initiative has ensured a hassle-free process of obtaining disability certificates and saved the time of differently abled persons to travel all the way to the district headquarters to appear before the Medical Board Full Article Other States
ces Computing services notes By marstonscience.blogspot.com Published On :: Thu, 07 Aug 2008 16:34:00 +0000 Computing services notes - from Middle Managers 8/7/08 * All circ problems: aleph, print demons, notices, etc -- anybody/everybody just send a Grover http://www.uflib.ufl.edu/grover ticket. As Systems learns the quantity, frequency, and variety of problems reported, they'll learn how to how to base assignments. __________________ * New linking service - Serials Solutions 360 Linker - is being tested The "Find it@UF" icon will change slightly (substituting the SFX trademark swirly with an @) and we’ll need to know when to make the switch on all our handouts, web pages, etc. _________________ * phishing -- everyone remember to never give out any of your passwords to anybody. Not to Systems, not to CIRCA, not to UF. Requests for passwords (especially from email messages) are masquerades for phishing schemes. OK to give your logon, but never your password. ____________________ * Active Directory -- public computers will begin conversion this week. Patrons will use Gatorlink to logon. We may create guest accounts (following procedures) valid for 14 days. Guest accounts cannot be renewed; patrons will have to select a new name (smith1, smith2, etc) every 2 weeks. The Peoplesoft folks have not yet committed to making longer-term, renewable guest accounts. These guest accounts are for computer use only; they do not govern borrowing privileges or remote access. (Patrons can log into to the Library Proxy with their Gatorlink, but it only connects if their Gatorlink account indicates an eligible status.) *** We currently have 300 courtesy borrowers, and some of them may be eligible for real Gatorlinks (which they can create themselves). They should check with Jim Stevens. In the meantime, it may be easiest to create them a temp guest account on the spot and then (we or patron) contact Jim to see what else can be done. Stay tuned. *** There are 1800 guest computer use accounts active today. 1800 accounts x every 2 weeks means a lot of work for staff and a lot of grief for patrons. We'll hope to succeed with requesting speedy establishment of longer-term, renewable guest Gatorlink accounts. *** Small branches with only student assistants on the weekends might send guests to MSL for account creation. ______________ * Active Directory for staff computers -- might happen in mid-Fall. Huge implications for how we all manage our email; some aspects will be time-consuming and deadline-based. *** Campus email only saves Inbox and Sent email for 30 days. Then it goes into Deleted folder. After 30 days, stuff in Deleted is irretrievable. We all must learn to put any items we want to save into our Retain Permanently folder. *** Our new email address will be our Gatorlink. If you might be professionally embarrassed by your Gatorlink name, change it soon. *** We'll all have to notify our discussion lists of our new (gatorlink) address. We should still receive mail directed to uflib, but we won't be able to post to lists that expect us to send from uflib. Feel free to start converting your discussion lists to gatorlink soon. *** Will said he'll check the group email addresses (sciref, illoan, etc) to see how they can be addressed, managed, and accessed in the campus AD. Stay tuned. *** We should receive recommendations and procedures on storing and backing up email on library vs. campus servers before we switch. Some gory details available at http://www.mail.ufl.edu/questionsandanswers.shtml and http://www.mail.ufl.edu/managemail.shtml. _________________* Office 2007 - if you really want Office 2007 on your staff computer now, please send a request via Grover. If you can wait til about mid-Sept, Systems will be able to push the software over the network rather then sending a staff member to enslave your computer for awhile. Full Article
ces Manu under dope cloud, Paris chances hit; AFI disappointed; coach Naik too under scrutiny By www.thehindu.com Published On :: Fri, 28 Jun 2024 20:29:39 +0530 Full Article Athletics
ces Developing world faces multi-billion climate adaptation cash gap: U.N. report By www.thehindu.com Published On :: Fri, 08 Nov 2024 20:58:59 +0530 How much money richer countries agree to send to developing countries to help them cope is expected to be central to the COP29 talks Full Article Environment
ces Combining forces, GSAP & Webflow! By css-tricks.com Published On :: Fri, 18 Oct 2024 13:09:22 +0000 Change can certainly be scary whenever a beloved, independent software library becomes a part of a larger organization. I’m feeling a bit more excitement than concern this time around, though. If you haven’t heard, GSAP (GreenSock Animation Platform) is teaming … Combining forces, GSAP & Webflow! originally published on CSS-Tricks, which is part of the DigitalOcean family. You should get the newsletter. Full Article Links animation GSAP news webflow
ces Tooltip Best Practices By css-tricks.com Published On :: Tue, 29 Oct 2024 14:01:18 +0000 What are tooltips, exactly? There's two kinds and the one you use has implications on the user experience, as Zell illustrates in this explainer on best practices. Tooltip Best Practices originally published on CSS-Tricks, which is part of the DigitalOcean family. You should get the newsletter. Full Article Articles dialog popover semantics
ces US weather agency lowers chances of La Nina’s emergence By www.thehindubusinessline.com Published On :: Thu, 10 Oct 2024 21:58:03 +0530 Cuts prospects to 60%, says a weak even may last till March 2025 Full Article Agri Business
ces Pakistan to hike petrol prices amid economic turmoil By www.thehindubusinessline.com Published On :: Sat, 12 Oct 2024 12:33:40 +0530 Due to high smuggling and illegal trade, the country continues to suffer, and is dependent on international players for its energy security Full Article World
ces As Trump makes historic return, world braces for new era By www.thehindubusinessline.com Published On :: Wed, 06 Nov 2024 16:21:47 +0530 People hope Trump will address jobs, economy issues; Trump has vowed to crackdown on illegal immigration Full Article World
ces Raphael Varane, former France and Real Madrid defender, announces retirement By www.thehindu.com Published On :: Wed, 25 Sep 2024 14:59:13 +0530 Raphael Varane won the FIFA World Cup with France in 2018 and helped Real Madrid to four Champions League titles and three Spanish league trophies Full Article Football
ces EPL: Cole Palmer scores 4 goals in Chelsea win over Brighton; Arsenal leaves it late to beat Leicester By www.thehindu.com Published On :: Sat, 28 Sep 2024 22:06:57 +0530 Palmer became the first player to score four goals in the first half of an English Premier League match Full Article Football
ces Spain and Barcelona great Andres Iniesta announces retirement after 22-year career By www.thehindu.com Published On :: Tue, 08 Oct 2024 17:13:32 +0530 The 40-year-old Iniesta ended a 22-year career that also included two European Championship titles and four Champions League trophies. Full Article Football
ces League Cup: Man United routs Leicester days after firing Ten Hag; Tottenham eliminates Manchester City By www.thehindu.com Published On :: Thu, 31 Oct 2024 09:42:45 +0530 Liverpool continued its title defense with a 3-2 win over Brighton; Newcastle beat Chelsea 2-0 Full Article Football
ces Gold ETF gains traction as prices hit new high By www.thehindubusinessline.com Published On :: Tue, 09 Apr 2024 19:04:36 +0530 The asset under management of gold ETF has gone up 33 per cent to ₹28,530 crore as of February against ₹21,400 crore in February, 2023 Full Article Gold & Silver
ces Jewellery retailers fear a lacklustre Akshaya Tritiya this year due to soaring gold prices By www.thehindubusinessline.com Published On :: Fri, 12 Apr 2024 20:55:10 +0530 Akshaya Tritiya, which falls on May 10 this year, is considered auspicious to buy gold Full Article Gold & Silver
ces Dip in gold prices ahead of Akshaya Tritiya to boost demand By www.thehindubusinessline.com Published On :: Tue, 23 Apr 2024 19:10:45 +0530 Lingering global uncertainty may boost prices again Full Article Gold & Silver
ces Despite high prices, gold demand picks up this Akshaya Tritiya By www.thehindubusinessline.com Published On :: Fri, 10 May 2024 20:33:55 +0530 The high price for gold has also given a boost to diamond jewellers as customers look for alternatives Full Article Gold & Silver