- E-post
- wei.wang@uib.no
- Telefonnummer
- +47 55583355
- Besøksadresse
-
Allegaten 41
5020 Bergen - Rom: 3011
- Postadresse
-
Postboks 7803
5020 Bergen
Følg meg
Forskergrupper
Forskning
Surfactants, Polymers and Colloidal Systems
- Lipids and Surfactants: Synthesis and Self-Assembly (e.g., Cubosomes and LNPs)
- Hydrogels: Synthesis and Applications in Drug Formulation and Energy Conversion
- Polymer-Surfactant Interactions, Chain Dynamics, and Fine Chemical Engineering
- Polymer Compositions for Water-Oil Separation and Photocatalysis
- Inorganic Nanoparticles: Synthesis, Hydrogen Production, Water Splitting, and Supercapacitors
Undervisning
KJEM210 Kjemisk termodynamikk
FARM211 Farmasøytisk fysikalsk kjemi
FARM295 Galenisk farmasi
KJEM319 Eksperimentelle teknikkar i fysikalsk kjemi
Publikasjoner
2008
- Wensheng Lu; Wei Wang; Jiang Long (2008). One-step synthesis of gold nanowire netword capped by diacetylene molecules under ultrasonic irradiation. (ekstern lenke)
- Wei Wang; Wensheng Lu; Jiang Long (2008). Influence of pH on the aggregation morphology of a novel surfactant with single hydrocarbon chain and multi-amine headgroups. (ekstern lenke)
- Yang Yun; Yan Ya; Wei Wang et al. (2008). Precise size control of hydrophobic gold nanoparticles using cooperative effect of refluxing ripening and seeding growth. (ekstern lenke)
2006
- Wei Wang; Guo Zhenpeng; Yi Chen et al. (2006). Influence of Generation 2–5 of PAMAM Dendrimer on the Inhibition of Tat Peptide/TAR RNA Binding in HIV-1 Transcription. (ekstern lenke)
- Yang Yun; Wei Wang; Jinru Li et al. (2006). Manipulating the Solubility of Gold Nanoparticles Reversibly and Preparation of Water-Soluble Sphere Nanostructure through Micellar-like Solubilization. (ekstern lenke)
2021
- Xiujie Zhao; Hongjie Zhao; Shuo Wang et al. (2021). A Tumor-Targeting Near-Infrared Heptamethine Cyanine Photosensitizer with Twisted Molecular Structure for Enhanced Imaging-Guided Cancer Phototherapy. (ekstern lenke)
- Xianglei Cao; Liugen Zhang; Changyan Guo et al. (2021). Ni-doped CdS porous cubes prepared from prussian blue nanoarchitectonics with enhanced photocatalytic hydrogen evolution performance. (ekstern lenke)
- Daning Lang; Ming Shi; Xia Xu et al. (2021). DMAEMA-grafted cellulose as an imprinted adsorbent for the selective adsorption of 4-nitrophenol. (ekstern lenke)
- Bo Jiang; Yifei Yuan; Wei Wang et al. (2021). Surface lattice engineering for fine-tuned spatial configuration of nanocrystals. (ekstern lenke)
- Juma Mohamedi; Betty Maganda; Silas Shemdoe et al. (2021). Formulation Development and Evaluation of Hydroxyurea Dry Syrup for the Management of Pediatric Patients with Sickle Cell Disease in Tanzania. (ekstern lenke)
- Chao Feng; Yuehong Xie; Shanshan Qiao et al. (2021). Porous MoWN/MoWC@NAC Nano-octahedrons synthesized via confined carburization and vapor deposition in MOFs as efficient trifunctional electrocatalysts for oxygen reversible catalysis and hydrogen production in the same electrolyte. (ekstern lenke)
- Tri Quang Bui; Ole Morten Magnussen; Vinh Duy Cao et al. (2021). Osmotic engine converting energy from salinity difference to a hydraulic accumulator by utilizing polyelectrolyte hydrogels. (ekstern lenke)
- Tri Quang Bui; Vinh Duy Cao; Wei Wang et al. (2021). Energy Lost in a Hydrogel Osmotic Engine Due to a Pressure Drop. (ekstern lenke)
- Jingjing Cao; Tianpeng Zhou; Yunlong Xu et al. (2021). Oriented Assembly of Anisotropic Nanosheets into Ultrathin Flowerlike Superstructures for Energy Storage. (ekstern lenke)
- Xia Xu; Ke Jia; Shifei Chen et al. (2021). Ultra-fast degradation of phenolics and dyes by Cu2O/Cu catalysts: Synthesis and degradation kinetics. (ekstern lenke)
- Tri Quang Bui; Vinh Duy Cao; Wei Wang et al. (2021). Recovered Energy from Salinity Gradients Utilizing Various Poly(Acrylic Acid)-Based Hydrogels. (ekstern lenke)
2024
- DaNing Lang; RongLan Wu; Wei Wang (2024). Cotton Stalk-Based Biomass. (ekstern lenke)
- Xiaorui Liang; Jing Ye; Rui Cao et al. (2024). Microplastics and their interaction with microorganisms in Bosten Lake water. (ekstern lenke)
- Xiaorui Liang; Jing Ye; Yu Xue et al. (2024). Microplastics and their interaction with microorganisms in Bosten Lake sediment. (ekstern lenke)
- Jianan Shi; Huan Zhang; Yaxin Cui et al. (2024). Extracellular vesicles for breast cancer diagnosis and therapy. (ekstern lenke)
- Zhangmeng Liu; Yayao Li; Shuaiqi Yao et al. (2024). Rich electron delocalization structure in carbon nitride inducing radical transfer for high-performance photocatalytic uranyl reduction. (ekstern lenke)
- Julia Schmidt; Marte Haave; Jarl Underhaug et al. (2024). Unlocking the potential of NMR spectroscopy for precise and efficient quantification of microplastics. (ekstern lenke)
- Kefu Wang; Changyan Guo; Jiang Li et al. (2024). A critical review of the adsorption-desorption characteristics of antibiotics on microplastics and their combined toxic effects. (ekstern lenke)
- Daning Lang; Gang Liu; Ronglan Wu et al. (2024). Efficient preparation of anisotropic cellulose sponge from cotton stalks: An excellent material for separation applications. (ekstern lenke)
- Kangkang Wang; Yuli Kou; Changyan Guo et al. (2024). Comparison of rhodamine B adsorption and desorption on the aged non-degradable and degradable microplastics: Effects of charge-assisted hydrogen bond and underline mechanism. (ekstern lenke)
- Shuo Wang; Xiaobao Chen; Meng Meng et al. (2024). Hydrogels for Drug Delivery. (ekstern lenke)
- Xiaorui Liang; Jing Ye; Rui Cao et al. (2024). Corrigendum to “Microplastics and their interaction with microorganisms in Bosten Lake Water” [J. Clean. Prod. 481 (2024) 144157] (Journal of Cleaner Production (2024) 481, (S0959652624036060), (10.1016/j.jclepro.2024.144157)). (ekstern lenke)
- Chengbo Zhang; GuoHao Chen; DaNing Lang et al. (2024). Superhydrophobic cellulose-nanofiber aerogels from waste cotton stalks for superior oil–water and emulsion separation. (ekstern lenke)
2022
- Daning Lang; Xia Xu; Ronglan Wu et al. (2022). Cellulose‐g‐tetraethylenepentamine dual‐function imprinted polymers selectively and effectively adsorb and remove 4‐nitrophenol and Cr(VI). (ekstern lenke)
- Carina Yeeka Wu; Wei Wang (2022). Application of Antisolvent Precipitation Method for Formulating Excipient-Free Nanoparticles of Psychotropic Drugs. (ekstern lenke)
- Jingjing Cao; Yuheng Lin; Wei Jiang et al. (2022). Mechanism of the Significant Acceleration of Polyethylene Terephthalate Glycolysis by Defective Ultrathin ZnO Nanosheets with Heteroatom Doping. (ekstern lenke)
- Yu Lu; Di Zhu; Quynh Bao Truong Le et al. (2022). An NMR study on hydration and molecular interaction of phytantriol‐based liquid crystals. (ekstern lenke)
- Ke Jia; Gang Liu; Daning Lang et al. (2022). Degradation of tetracycline by visible light over ZnO nanophotocatalyst. (ekstern lenke)
- Shuo Wang; Yueping Bai; Dayuan Wang et al. (2022). Reversing tumor to “Hot”: A NIR light-triggered carrier-free nanoplatform for enhanced tumor penetration and photo-induced immunotherapy. (ekstern lenke)
- Ronglan Wu; Wei Wang (2022). Synthesis, Characterization, and Applications of Smart Waterborne Polyurethanes. (ekstern lenke)
- Shanshan Qiao; Chao Feng; Tianxiang Chen et al. (2022). Spherical shell CdS@NiO Z-scheme composites for solar-driven overall water splitting and carbon dioxide reduction. (ekstern lenke)
- Yu Lu; Di Zhu; Quynh Bao Truong Le et al. (2022). Ruthenium-based antitumor drugs and delivery systems from monotherapy to combination therapy. (ekstern lenke)
- Ke Jia; Gang Liu; Daning Lang et al. (2022). Fast photodegradation of antibiotics and dyes by an anionic surfactant-aided CdS/ZnO nanodispersion. (ekstern lenke)
- Jingjing Cao; Wei Wang (2022). Pseudocapacitive Materials. (ekstern lenke)
- Jingjing Cao; Mehran Asad Ayoubi; Wei Wang (2022). Carbon Aerogels for Supercapacitor Applications. (ekstern lenke)
- Yiping Zhong; Kangkang Wang; Changyan Guo et al. (2022). Competition adsorption of malachite green and rhodamine B on polyethylene and polyvinyl chloride microplastics in aqueous environment. (ekstern lenke)
- Kangkang Wang; Meng Wang; Yuli Kou et al. (2022). Determination of nitrofuran metabolites in meat products by UHPLC-fluorescence with ultrasonic-assisted derivatization. (ekstern lenke)
2025
- Kangkang Wang; Yuli Kou; Kefu Wang et al. (2025). Comparison of adsorption of seven ionic organic pollutants on polystyrene and poly(butylene adipate-co-terephthalate) microplastics: UV aging mechanism and role of charge-assisted hydrogen bond. (ekstern lenke)
- Aase Merethe Raddum; Quynh Bao Truong Le; Lars Herfindal et al. (2025). Fostering student agency and confidence through problem-based learning and cognitive reflection in the pharmaceutics laboratory. (ekstern lenke)
- Kangkang Wang; Yuli Kou; Kefu Wang et al. (2025). Comparative study on the adsorption and desorption behaviors of quinolone pollutants on polystyrene microplastics of different particle sizes. (ekstern lenke)
- Daning Lang; Gang Liu; Ronglan Wu et al. (2025). Anisotropic waste PVC/Cotton stalk cellulose composite sponges with under-oil superhydrophobicity for efficient oil-water separation. (ekstern lenke)
- Nan Hou; Xue Liu; Quanlong Xu et al. (2025). Combining Surface Lattice Engineering and Growth Kinetics for Controlled Noble Metal Nanomultimers. (ekstern lenke)
- Zheng Zhang; Chengbo Zhang; Gang Liu et al. (2025). Adsorption behavior of amine-modified cotton stalk extract on Congo red in aqueous solution. (ekstern lenke)
- Xiaobao Chen; Li Liu; Weidan Wang et al. (2025). Nanoformulation of Polymyxin E Through Complex Coacervation: A Pharmacokinetic Analysis. (ekstern lenke)
- Julia Schmidt; Marte Haave; Wei Wang (2025). Applicability of NMR spectroscopy to quantify microplastics across varying concentrations in polymer mixtures. (ekstern lenke)
- Zheng Zhang; Gang Liu; Daning Lang et al. (2025). Direct conversion of resin button waste into adsorbent for efficient removal of dyes and heavy metals from aqueous solution. (ekstern lenke)
- Xiaobao Chen; Yan Wu; Li Liu et al. (2025). Enhancing RNA Delivery: Practical insights into NeoLNPTM transfection reagent. (ekstern lenke)
2019
- Qiufeng Mei; Feiyan Zhang; Ning Wang et al. (2019). TiO2/Fe2O3 heterostructures with enhanced photocatalytic reduction of Cr(VI) under visible light irradiation. (ekstern lenke)
- Jingjing Cao; Qiufeng Mei; Ronglan Wu et al. (2019). Flower-like nickel-cobalt layered hydroxide nanostructures for super long-life asymmetrical supercapacitors. (ekstern lenke)
- Xiaosu Qian; Ning Li; Mukhtar Imerhasan et al. (2019). Conversion of low molecular weight hydrogel to nitrogen-doped carbon materials and its application as supercapacitor. (ekstern lenke)
- Ning Li; Mehran Asad Ayoubi; Huamei Chen et al. (2019). Co-Hydrogelation of Dendritic Surfactant and Amino Acids in Their Common Naturally-Occurring Forms: A Study of Morphology and Mechanisms. (ekstern lenke)
- Huiqiong Wu; Jun Zheng; Anna-Lena Kjøniksen et al. (2019). Metallogels: Availability, applicability, and advanceability. (ekstern lenke)
- Hongtao Xie; Huanbo Wang; Qin Geng et al. (2019). Oxygen Vacancies of Cr-Doped CeO2 Nanorods That Efficiently Enhance the Performance of Electrocatalytic N2 Fixation to NH3 under Ambient Conditions. (ekstern lenke)
- Huiqiong Wu; Yulai Lei; Xianwen Song et al. (2019). Real time rheological study of first network effects on the in situ polymerized semi-interpenetrating hydrogels. (ekstern lenke)
2023
- Yu Lu; Di Zhu; Liujia Chan et al. (2023). The ruthenium complex assists in nuclear targeting and selective killing of tumor cells. (ekstern lenke)
- Lingling Wang; Chengxin Guo; Qianqian Qian et al. (2023). Adsorption behavior of UV aged microplastics on the heavy metals Pb(II) and Cu(II) in aqueous solutions. (ekstern lenke)
- Siqi Liang; Kangkang Wang; Kefu Wang et al. (2023). Adsorption of Diclofenac Sodium by Aged Degradable and Non-Degradable Microplastics: Environmental Effects, Adsorption Mechanisms. (ekstern lenke)
- Jingjing Cao; Yuheng Lin; Tianpeng Zhou et al. (2023). Molecular oxygen-assisted in defect-rich ZnO for catalytic depolymerization of polyethylene terephthalate. (ekstern lenke)
- Shangyan Gu; Yu Lu; Yuji Wang et al. (2023). Low Molecular Weight Hydrogel for Wound Healing. (ekstern lenke)
- Ming Xu; Jianmin Gu; Zixun Fang et al. (2023). Colorless to black switching with high contrast ratio via the electrochemical process of a hybrid organic–inorganic perovskite. (ekstern lenke)
- Chengxin Guo; Lingling Wang; Daning Lang et al. (2023). UV and chemical aging alter the adsorption behavior of microplastics for tetracycline. (ekstern lenke)
- Aase Merethe Raddum; Mirey Alfarah; Quynh Bao Truong Le et al. (2023). Lab som Læringsarena. (ekstern lenke)
- Kangkang Wang; Yuli Kou; Kefu Wang et al. (2023). Comparing the adsorption of methyl orange and malachite green on similar yet distinct polyamide microplastics: Uncovering hydrogen bond interactions. (ekstern lenke)
- Kefu Wang; Kangkang Wang; Yaoyao Chen et al. (2023). Adsorption–desorption behavior of malachite green by potassium permanganate pre-oxidation polyvinyl chloride microplastics. (ekstern lenke)
- Jingjing Cao; Zimou Feng; Huaxing Liang et al. (2023). Oriented self-assembly of anisotropic layered double hydroxides (LDHs) with 2D-on-3D hierarchical structure. (ekstern lenke)
- Kefu Wang; Kangkang Wang; Yaoyao Chen et al. (2023). Desorption of sulfamethoxazole from polyamide 6 microplastics: Environmental factors, simulated gastrointestinal fluids, and desorption mechanisms. (ekstern lenke)
- Ming Shi; Gang Liu; Daning Lang et al. (2023). Partially carbonized wastepaper with excellent mechanical strength for oil-water and emulsion separation. (ekstern lenke)
- Kefu Wang; Kangkang Wang; Siqi Liang et al. (2023). Accelerated aging of polyvinyl chloride microplastics by UV irradiation: Aging characteristics, filtrate analysis, and adsorption behavior. (ekstern lenke)
- Siqi Liang; Kangkang Wang; Kefu Wang et al. (2023). Adsorption Behavior of Diclofenac on Polystyrene and Poly(butylene adipate-co-terephthalate) Microplastics: Influencing Factors and Adsorption Mechanism. (ekstern lenke)
- Daning Lang; Chengbo Zhang; Qianqian Qian et al. (2023). Oil absorption stability of modified cellulose porous materials with super compressive strength in the complex environment. (ekstern lenke)
- Daning Lang; Gang Liu; Ronglan Wu et al. (2023). One-step preparation of robust elastic plastic polyvinyl chloride sponges with a layered structure for highly efficient separation of water-in-oil emulsions. (ekstern lenke)
- Aase Merethe Raddum; Quynh Bao Truong Le; Wei Wang et al. (2023). Improving student confidence in lab learning through problem-based learning. (ekstern lenke)
2017
- Hongtao Xie; Jide Wang; Wang Wei (2017). Constructing porous carbon nanomaterials using redox-induced low molecular weight hydrogels and their application as supercapacitors. (ekstern lenke)
- Weiwei Li; Xue Jiang; Ronglan Wu et al. (2017). Fast shape recovery by changing the grafting ratio in polyurethane/montmorillonite-poly(methyl methacrylate) composites. (ekstern lenke)
- Fangyan Liu; Jia Ni; Hui Hao et al. (2017). Rational selection of halide ions for synthesizing highly active Au@Pd nanobipyramids. (ekstern lenke)
- Hongtal Xie; AsadAyoubi Mehran; Wensheng Lu et al. (2017). A unique thermo-induced gel-to-gel transition in a pH-sensitive small-molecule hydrogel. (ekstern lenke)
- Yufeng Zhang; Weiwei Li; Ronglan Wu et al. (2017). PU/PMMA composites synthesized by reaction-induced phase separation: a general approach to achieve a shape memory effect. (ekstern lenke)
2018
- Malgorzata Wisniewska; John Georg Seland; Wei Wang (2018). Determining the scaling of gel mesh size with changing crosslinker concentration using dynamic swelling, rheometry, and PGSE NMR spectroscopy. (ekstern lenke)
- Wenlan Ma; Hui Li; Qian Xu et al. (2018). Au nanoparticle-doped Co3O4–CoFe2O4@SiO2 as a catalyst for visible-light-driven water oxidation. (ekstern lenke)
- Jingjing Cao; Ziyuan Wang; Xianhou Yang et al. (2018). Green synthesis of amphipathic graphene aerogel constructed by using the framework of polymer-surfactant complex for water remediation. (ekstern lenke)
- Liuzhuang Xing; YongHai Hui; Jinghui Yang et al. (2018). MCM-41-Accelerated PWA Catalysis of Friedel-Crafts Reaction of Indoles and Isatins. (ekstern lenke)
- Xianhou Yang; Daning Lang; Ziyuan Wang et al. (2018). Underwater superoleophobic polyurethane-coated mesh with excellent stability for oil/water separation. (ekstern lenke)
- Tri Quang Bui; Vinh Duy Cao; Nu Bich Duyen Do et al. (2018). Salinity gradient energy from expansion and contraction of poly(allylamine hydrochloride) hydrogels. (ekstern lenke)
- Da Zou; Xiang Bai; Xian Li et al. (2018). Composition and structure evolution characteristics of product from segmenting pyrolysis of Xinjiang Hefeng coal. (ekstern lenke)
- Ziyuan Wang; Weiwei Li; Xianhou Yang et al. (2018). Highly stretchable and compressible shape memory hydrogels based on polyurethane network and supramolecular interaction. (ekstern lenke)
2016
- Wei Wang; Eric S. Johnson; Tommy Nylander et al. (2016). Selective co-deposition of anionic silica particles at hydrophobic surfaces from formulations of oppositely charged polymers and surfactants. (ekstern lenke)
- Yufen Zhang; Xue Jiang; Ronglan Wu et al. (2016). Multi-stimuli responsive shape memory polymers synthesized by using reaction-induced phase separation. (ekstern lenke)
2020
- Guangliang Niu; Fangyan Liu; Yun Yang et al. (2020). Synthesis of Penta-fold Twinned Pd-Au-Pd Segmental Nanorods for in situ Monitoring Catalytic Reaction. (ekstern lenke)
- Haichao Liu; Yahong Xie; Peng Wei et al. (2020). Interface optimization of hole-conductor free perovskite solar cells using porous carbon materials derived from biomass soybean dregs as a cathode. (ekstern lenke)
- Chao Feng; Yuan Guo; Xie Yuehong et al. (2020). Bamboo-like nitrogen-doped porous carbon nanofibers encapsulated nickel–cobalt alloy nanoparticles composite material derived from the electrospun fiber of a bimetal–organic framework as efficient bifunctional oxygen electrocatalysts. (ekstern lenke)
- Ning Wang; Feiyan Zhang; Qiufeng Mei et al. (2020). Photocatalytic TiO2/rGO/CuO Composite for Wastewater Treatment of Cr(VI) Under Visible Light. (ekstern lenke)
- Songlin Song; Lin Gui; Qiqi Feng et al. (2020). TAT-modified gold nanoparticles enhance the antitumor activity of PAD4 inhibitors. (ekstern lenke)
- Chao Feng; Yuan Guo; Shanshan Qiao et al. (2020). 2-Methylimidazole as a nitrogen source assisted synthesis of a nanorod shaped Fe/FeN@N-C catalyst with plentiful FeN active sites and enhanced ORR activity. (ekstern lenke)
- Shanshan Qiao; Chao Feng; Yuan Guo et al. (2020). CdS nanoparticles modified Ni@NiO spheres as photocatalyst for oxygen production in water oxidation system and hydrogen production in water reduction system. (ekstern lenke)
- Hui Hao; Yinliang Yang; Chao Zou et al. (2020). Effects of Strain and Kinetics on the H2O2‑Assisted Reconstruction of Ag−Au−Ag Nanorods. (ekstern lenke)
- Xianglei Cao; Liugen Zhang; Tianxiang Chen et al. (2020). MOF based sheet-assembled flowers CdS-MoS2 composite for enhanced visible-light hydrogen production. (ekstern lenke)
2015
- Xiaolin Man; Ronglan Wu; Henghua Lv et al. (2015). Synthesis of a montmorillonite-supported titania nanocomposite with grafted cellulose as a template and its application in photocatalytic degradation. (ekstern lenke)
- Ronglan Wu; Linyuan Tian; Wei Wang (2015). Synthesis of a nanocomposite of organo-montmorillonite/cellulose-g-poly(methyl methacrylate) by atom-transfer radical polymerization and its application in removal of 2,4-dichlorophenol. (ekstern lenke)
- Wei Wang (2015). Multi-head surfactant and its application in nano-fabrication. (ekstern lenke)
- Xiaolin Man; Ronglan Wu; Xue Jiang et al. (2015). Organo-montmorillonite supported titania nanocomposite synthesized by using poly(methyl methacrylate) grafted cellulose as template and its application in photodegradation. (ekstern lenke)
- Wei Wang; Sverre Arne Sande (2015). A dynamic light scattering study of hydrogels with the addition of surfactant: a discussion of mesh size and correlation length. (ekstern lenke)
- Wei Wang; Wensheng Lu; Haifei Wang et al. (2015). Moderate the adsorption of cationic surfactant on gold surface by mixing with sparingly soluble anionic surfactant. (ekstern lenke)
- Ronglan Wu; Linyuan Tian; Wei Wang et al. (2015). Bifunctional cellulose derivatives for the removal of heavy-metal ions and phenols: Synthesis and adsorption studies. (ekstern lenke)
2012
- Wei Wang; Henrik Mauroy; Kaizheng Zhu et al. (2012). Complex coacervate micelles formed by a C18-capped cationic triblock thermoresponsive copolymer interacting with SDS. (ekstern lenke)
- Wei Wang (2012). Sustainable drug delivery formulation based on oppositely charged hydroxylethyl cellulose (HEC) hydrogel and SDS. (ekstern lenke)
- Sondre Volden; Jan Lasse Eilertsen; Gurvinder Singh et al. (2012). Effect of Charge Density Matching on the Temperature Response of PNIPAAM Block Copolymer-Gold Nanoparticles. (ekstern lenke)
2011
2013
- Wei Wang; Wensheng Lu (2013). A Multi-headed Surfactant as an Efficient Tool in Solubilization of Dimyristoylphosphatidycholine (DMPC) Vesicles. (ekstern lenke)
- Wei Wang; Sverre Arne Sande (2013). Kinetics of Re-equilibrium of Oppositely Charged Hydrogel–Surfactant System and Its Application in Controlled Release. (ekstern lenke)