2024 Aanda surfaces

Art3d. 6 in. White-Washed Peel and Stick Luxury Vinyl Plank Flooring,Self-Adhesive Floor Tile Vinyl Wood Plank (54 sq. ft./box) . Directions to sam

Product Details. The PermaFloat 2-3/4 in. Dock System Angle is used to connect stringers and supports inside of a dock. This angle is used in conjunction with washer plates and sometimes backup plates. Designed for use with 1-1/2 in. thick lumber with a minimum width of 6 ft.AandA Surfaces Aubrey Brant Lake beautiful AandA Surfaces Aubrey Brant Lake beautiful 8.98 in. x 60 in. gray wood look luxury vinyl tile flooring is 100% waterproof, scratch, stain, and dent resistant, and backed by a lifetime residential warranty. The innovative pre-attached backing of this plank flooring ensures supreme comfort under foot ...Jun 26, 2022 · The Sims Resource - Sims 4 - Counters - Mincsims - Amanda Counter A Liked by Amanda Barker. 6 years, say WHAT! Happy workiversary to Sarah Whitman, one of our amazing commercial-focused Design Consultants. Thank you for continuing to bring…. Liked by Amanda ... PL 7726 can be special ordered from your local Home Depot. It is a 4-pack of the same white plastic corner, designed for use with square cut, 3/4" x 7/16" aluminum screen frame material. For additional questions regarding this item, or any other product manufactured by Prime-Line Products, please call their toll free number at (877) 649-9740 ...AandA Surfaces. HOMELEGEND. Lucida Surfaces. Lifeproof. TrafficMaster + View All. Price. to. Go. $0 - $10. $10 - $20. $20 - $30. $30 - $40. $40 - $50. $50 - $100 ...Get free shipping on qualified Pergo Engineered Hardwood products or Buy Online Pick Up in Store today in the Flooring Department.Get free shipping on qualified AandA Surfaces Vinyl Flooring products or Buy Online Pick Up in Store today in the Flooring Department.the entire grain surface. For example, the formation rate of H 2 on grain surfaces is given by the equation (Caselli et al. 1998) d N (H 2) d t =0:5kH ;H N (H) N (H) ; (1) where N represents the average number of species per grain, and the rate coe cient kH ;H is the sum of inverse di usion times ( ts) for sweeping over the entire grain via 10 1 R=a 0 1 2 3 4 Averaged Surface Density cs = 0 :1 = 1 :1. Created Date: 7/20/2023 9:05:59 AMAtheism's shocking woman problem: What's behind the misogyny of Richard Dawkins and Sam Harris? As a movement, New Atheism seems like it would be so compatible with feminism — and yet that hasn ...the entire grain surface. For example, the formation rate of H 2 on grain surfaces is given by the equation (Caselli et al. 1998) d N (H 2) d t =0:5kH ;H N (H) N (H) ; (1) where N represents the average number of species per grain, and the rate coe cient kH ;H is the sum of inverse di usion times ( ts) for sweeping over the entire grain via The objective here was to understand why the thermal inertias of surfaces of icy atmosphereless bodies observed in the solar system are so low, how the thermal dichotomy between Mimas leading and trailing faces can be understood in terms of changes in regolith properties and, finally, how/if the very low thermal inertia of Centaurs and TNOs or ...Trademark Introduction A&A SURFACES TRADEMARK INFORMATION M S INTERNATIONAL, INC. Updated October 30, 2020 Case File Details Classifications Case File Owner History Case File Statements Case File Event Statements Documents Retrieve USPTO Trademark Documents For This Filing Sponsored Links ADDITIONAL LINKS Search All Trademarks Use an Winter Park T-Molding Large when joining 2 hard surfaces of the same height. This beautifully coordinating hybrid rigid core trim will give you the seamless transition you need between 2 different Get free shipping on qualified 1 year warranty, Vissani products or Buy Online Pick Up in Store today. AandA Surfaces Dunhill Flaxwood 8.98 in. AandA Surfaces Dunhill Flaxwood 8.98 in. x 60 in. modern matte beige wood look luxury vinyl tile flooring is 100% waterproof, scratch, stain, and dent resistant, and backed by a lifetime residential warranty. The innovative pre-attached backing of this plank flooring ensures supreme comfort under foot ... AandA Surfaces + View All $ 2. 99 (30) Model# HA-075782. TrafficMaster. Take Home Sample - 4 in. x 4 in. Sedona Grip Strip Luxury Vinyl Tile Flooring. Add to Cart ... Montserrat. Silva Ashen Bay 20 MIL x 9 in. W x 60 in. L Click Lock Waterproof Luxury Vinyl Plank Flooring (22.4 sqft/case)To discuss or join the program, please. Astronomy and Astrophysics (A&A) Maintains Stellar Reputation with Impressive Impact Factor and CiteScore, Demonstrating Consistent Growth. EDP Sciences and ESO Enhance Research Discoverability with Direct Links between Astronomy & Astrophysics and ESO Telescope Bibliography Records. The Artemis Lab Overlapping Stairnose is the perfect complement to your hybrid rigid core flooring and staircases. Unlike a flush stairnose, an overlapping stairnose connects on top of your flooring. When installing, you can apply an overlapped stairnose to any floor without having to align it with a particular joint.The long-term SW via micrometeoroid bombardments can spectrally remodel asteroid surfaces in different ways: darken and redden anhydrous silicate asteroids (e.g., S-, E-, and K-types); brighten and redden metal-rich M-type objects.How to Paint Plastic. Prep your item: Clean your item thoroughly with warm water and mild dish soap. Be sure to remove any grime or greasy residue. Rinse with clean water and dry with a soft cloth or towel. Wipe down the entire surface with rubbing alcohol and allow to dry.Name. 4 in. x 4 in. Copper Top Pyramid Post Cap. 4 in. x 4 in. Black Pyramid Post Cap with Pine Base. 4 in. x 4 in. Hammered Copper Pyramid Slip Over Fence Post Cap. 4 in. x 4 in. Copper Pyramid Slip Over Fence Post Cap. Price. $852. $985. $1795.Liked by Amanda Barker. 6 years, say WHAT! Happy workiversary to Sarah Whitman, one of our amazing commercial-focused Design Consultants. Thank you for continuing to bring…. Liked by Amanda ... Get free shipping on qualified Stair Nose, PERFORMANCE ACCESSORIES Vinyl Trim products or Buy Online Pick Up in Store today in the Flooring Department.HCO mapping of the Horsehead: tracing the illuminated dense molecular cloud surfaces *, ** M. Gerin 1 , J. R. Goicoechea 1 , J. Pety 2 ,1 and P. Hily-Blant 3 1 LERMA–LRA, UMR 8112, CNRS, Observatoire de Paris and École Normale Supérieure, 24 Rue Lhomond, 75231 Paris, France e-mail: [email protected]; [email protected] Introduction A&A SURFACES TRADEMARK INFORMATION M S INTERNATIONAL, INC. Updated October 30, 2020 Case File Details Classifications Case File Owner History Case File Statements Case File Event Statements Documents Retrieve USPTO Trademark Documents For This Filing Sponsored Links ADDITIONAL LINKS Search All Trademarks To discuss or join the program, please. Astronomy and Astrophysics (A&A) Maintains Stellar Reputation with Impressive Impact Factor and CiteScore, Demonstrating Consistent Growth. EDP Sciences and ESO Enhance Research Discoverability with Direct Links between Astronomy & Astrophysics and ESO Telescope Bibliography Records.interstellar dust grain surfaces and to understand their interaction with water ice. Methods. Temperature programmed desorption (TPD) experiments of formamide and methylamine ices were performed in the sub-monolayer and monolayer regimes on graphite (HOPG) and non-porous amorphous solid water (np-ASW) ice surfaces at temperatures 40–240 K. Evaluation of a potential ﬁeld source surface model with elliptical source surfaces via ballistic back mapping of in situ spacecraft data M. Kruse, V. Heidrich-Meisner, and R. F. Wimmer-Schweingruber University of Kiel, Institute for Experimental and Applied Physics, Leibnizstr. 11, 24118 Kiel, Germany e-mail: [email protected] 9, 2023 · When styling your bar cart or table, San Francisco–based designer Ken Fulk puts the emphasis on the creating a mood and look - no matter whether cocktail hour is just for yourself or you are entertaining guests. "I prefer to treat a bar cart as a tableau rather than simply a dispenser of drinks," says Fulk. "I often include flowers, favorite ... surfaces. As a result, they obtained an empirical fit to the ratio of the height of the scattering surface h and the midplane distance from the star r as follows: h r = 0.1617· r 100 au 0.219. (4) At the disk surface, the oblate grains are aligned with the mag-netic field. For the sake of simplicity, we assume that grains areAandA Surfaces + View All. More Options Available $ 2. 99. Home Decorators Collection. Take Home Sample - 4 in. W x 4 in. L Warm Cherry Click Lock Luxury Vinyl Plank ...Apr 28, 2021 · For testing models in stars other than the Sun, spatially resolved observations are feasible from differential spectroscopy during exoplanet transits, retrieving spectra of those stellar surface segments that successively become hidden behind the transiting planet, as demonstrated in Papers I, II, and III. Aims. separate adhesive tapes from various surfaces. The techniques employed included a freezing technique, heating with a steam iron, and the application of Un-du®. A fingerprint was added to the adhesive side of four different types of tape and then added to either paper, plastic, wood, or another adhesive surface. After a time period of 1, 2, 4, 6, Get free shipping on qualified AandA Surfaces Vinyl Flooring products or Buy Online Pick Up in Store today in the Flooring Department.Product Details For a flush look and feel on the edge of your stairs, the installation of Canopy Island Flush Stairnose is an excellent match. This piece of matching hybrid rigid core is applied to the nose of the top step or landing area to create a seamless finish with a contemporary design.Child safe cordless spring system, certified per WCMA best for kids program; Fabric width is always 1-1/8" less than the product width. Cut-to-Width, 24 in. to 73 in. length in 0.5 in. increments AandA Surfaces's Dunhill Harlow Fog 8.98 AandA Surfaces's Dunhill Harlow Fog 8.98 in. x 60 in. Luxury Vinyl Tile offers warm gray tones complete with dark knots and graining for an authentic reclaimed wood appearance. This 100% waterproof wood-look luxury vinyl plank is scratch, stain, and dent resistant, and backed by a lifetime residential ...Jun 9, 2023 · When styling your bar cart or table, San Francisco–based designer Ken Fulk puts the emphasis on the creating a mood and look - no matter whether cocktail hour is just for yourself or you are entertaining guests. "I prefer to treat a bar cart as a tableau rather than simply a dispenser of drinks," says Fulk. "I often include flowers, favorite ... Dec 14, 2020 · Outside of the use of copper surfaces during fermentation, 2017 FDA Model Food Code prohibits the use of copper for distilling and serving alcoholic beverages. Copper mugs for use to serve alcoholic beverages, such as mule cocktails, was addressed at the Conference for Food Protection (CFP) in 2018, issue 2018 III-030 (Conference for Food ... FablonOff-White Oak Minimal Adhesive Film (Set of 2) Add to Cart. Compare. $1506. Model# TFAB10044.AandA Surfaces Dunhill Salvaged Forest 8.98 AandA Surfaces Dunhill Salvaged Forest 8.98 in. x 60 in. Luxury Vinyl Tile offers light-brown tones complemented by darker brown and grey-blue graining for an on-trend salvaged appearance. This 100% waterproof wood-look luxury vinyl plank is scratch, stain, and dent resistant, and backed by a lifetime ... Shop AandA Surfaces Waterproof Vinyl Flooring; Meets A.D.A. Requirements Floor Ceramic Tile; Lighting. Hardwired 3 in Post Lanterns; 1 Pack Gimbal Recessed Lighting ... Use an Chalamet Oak T-Molding Large when Use an Chalamet Oak T-Molding Large when joining 2 hard surfaces of the same height. This beautifully coordinating hybrid rigid core trim will give you the seamless transition you need between 2 different floorings or in doorways and ties the space together for a finished look that can't be beat.AandA Surfaces Dunhill Salvaged Forest 8.98 AandA Surfaces Dunhill Salvaged Forest 8.98 in. x 60 in. Luxury Vinyl Tile offers light-brown tones complemented by darker brown and grey-blue graining for an on-trend salvaged appearance. This 100% waterproof wood-look luxury vinyl plank is scratch, stain, and dent resistant, and backed by a lifetime ... Astronomy & Astrophysics (A&A) is an international journal which publishes papers on all aspects of astronomy and astrophysicsProduct Details. The PermaFloat 2-3/4 in. Dock System Angle is used to connect stringers and supports inside of a dock. This angle is used in conjunction with washer plates and sometimes backup plates. Designed for use with 1-1/2 in. thick lumber with a minimum width of 6 ft.Get free shipping on qualified ALLURE Vinyl Flooring products or Buy Online Pick Up in Store today in the Flooring Department.Jun 26, 2022 · The Sims Resource - Sims 4 - Counters - Mincsims - Amanda Counter A Mar 9, 2022 · The long-term SW via micrometeoroid bombardments can spectrally remodel asteroid surfaces in different ways: darken and redden anhydrous silicate asteroids (e.g., S-, E-, and K-types); brighten and redden metal-rich M-type objects. However, by transforming the surface morphology, these processes induce effects that can be detected even if the asteroid surface features are too small to be observed from the Earth: The Yarkovsky-O’Keefe-Radzievskii-Paddack effect (YORP; Rubincam 2000 ) changes the spin rate of an object due to the anisotropic re-emission of radiation ...Oct 3, 2014 · This article originally appeared on AlterNet.. At first blush, it would seem that an atheist movement would be exactly the sort of thing that would attract many women. Simulated Eros-like asteroid, observed at different phase angles (solar elevation). The shading is Lambertian and does not attempt to describe complex processes such as the opposition effect, but rather aims to display the extent of shadowed areas as a function of the phase.Get free shipping on qualified AandA Surfaces, Waterproof Vinyl Trim products or Buy Online Pick Up in Store today in the Flooring Department. PL 7726 can be special ordered from your local Home Depot. It is a 4-pack of the same white plastic corner, designed for use with square cut, 3/4" x 7/16" aluminum screen frame material. For additional questions regarding this item, or any other product manufactured by Prime-Line Products, please call their toll free number at (877) 649-9740 ...Oct 3, 2014 · This article originally appeared on AlterNet.. At first blush, it would seem that an atheist movement would be exactly the sort of thing that would attract many women. S-irradiated icy body surfaces. Solar System bodies are abun-dant in refractory organic matter on their icy surfaces that can be further processed by ion implantation, as it is the case for comet 67P/C-G (Capaccioni et al.2015). Space weathering alters the surface of Solar System bodies (Hapke2001;Bennett et al. 2013).The objective here was to understand why the thermal inertias of surfaces of icy atmosphereless bodies observed in the solar system are so low, how the thermal dichotomy between Mimas leading and trailing faces can be understood in terms of changes in regolith properties and, finally, how/if the very low thermal inertia of Centaurs and TNOs or ...Get free shipping on qualified Wood Look, Armstrong Vinyl Flooring products or Buy Online Pick Up in Store today in the Flooring Department.Get free shipping on qualified AandA Surfaces Vinyl Flooring products or Buy Online Pick Up in Store today in the Flooring Department. Product Details AandA Surfaces Aubrey Ripton beautiful 8.98 in. x 60 in. rustic gray wood look luxury vinyl tile flooring is 100% waterproof, scratch, stain, and dent resistant, and backed by a lifetime residential warranty.Product Details AandA Surfaces Aubrey Ripton beautiful 8.98 in. x 60 in. rustic gray wood look luxury vinyl tile flooring is 100% waterproof, scratch, stain, and dent resistant, and backed by a lifetime residential warranty. Child safe cordless spring system, certified per WCMA best for kids program; Fabric width is always 1-1/8" less than the product width. Cut-to-Width, 24 in. to 73 in. length in 0.5 in. increments AandA Surfaces + View All $ 2. 99 (30) Model# HA-075782. TrafficMaster. Take Home Sample - 4 in. x 4 in. Sedona Grip Strip Luxury Vinyl Tile Flooring. Add to Cart ... PL 7726 can be special ordered from your local Home Depot. It is a 4-pack of the same white plastic corner, designed for use with square cut, 3/4" x 7/16" aluminum screen frame material. For additional questions regarding this item, or any other product manufactured by Prime-Line Products, please call their toll free number at (877) 649-9740 ...Art3d. 6 in. White-Washed Peel and Stick Luxury Vinyl Plank Flooring,Self-Adhesive Floor Tile Vinyl Wood Plank (54 sq. ft./box) Victory Surfaces is a Residential and Commercial Stone & Terrazzo Company specializing in Natural Stone Fabrication, Granite Countertops, Ceramic Tile, Terrazzo and Concrete. Victory Surfaces custom makes and installs everything from counter tops and bathtubs to stone tables of any size and unique, show stopping fountains. Location: 5720 ... surfaces across the loop and then present a new model of zebra sources where the DPR surfaces are observed from the direction perpendicular to the loop axis. The paper is organized as follows: in Sect.2we analyze the DPR surfaces. In Sect.3we derive the sizes of the zebra source, estimate the brightness temperature for three observed zebras,Use an Winter Park T-Molding Large when joining 2 hard surfaces of the same height. This beautifully coordinating hybrid rigid core trim will give you the seamless transition you need between 2 different Proteco. Yellow Stone Pine 20 MIL x 7.1 in. W x 48 in. L Click Lock Waterproof Luxury Vinyl Plank Flooring (23.6 sqft/case)Evaluation of a potential ﬁeld source surface model with elliptical source surfaces via ballistic back mapping of in situ spacecraft data M. Kruse, V. Heidrich-Meisner, and R. F. Wimmer-Schweingruber University of Kiel, Institute for Experimental and Applied Physics, Leibnizstr. 11, 24118 Kiel, Germany e-mail: [email protected] free shipping on qualified Wood Look, Armstrong Vinyl Flooring products or Buy Online Pick Up in Store today in the Flooring Department.AandA Surfaces Dunhill Salvaged Forest 8.98 AandA Surfaces Dunhill Salvaged Forest 8.98 in. x 60 in. Luxury Vinyl Tile offers light-brown tones complemented by darker brown and grey-blue graining for an on-trend salvaged appearance. This 100% waterproof wood-look luxury vinyl plank is scratch, stain, and dent resistant, and backed by a lifetime ...Get free shipping on qualified AandA Surfaces, Vinyl Vinyl Trim products or Buy Online Pick Up in Store today in the Flooring Department. It is not related to their intrinsic stability but instead to both AA and EtOH producing more and stronger hydrogen bonds with the ice surface. Conclusions. We show that hydrogen bonding may play an important role in the release of organic species from grains and propose that, depending on the environment, differential adsorption should not be ...Montserrat. Silva Ashen Bay 20 MIL x 9 in. W x 60 in. L Click Lock Waterproof Luxury Vinyl Plank Flooring (22.4 sqft/case)Get free shipping on qualified Wood Look, Armstrong Vinyl Flooring products or Buy Online Pick Up in Store today in the Flooring Department.surfaces. As a result, they obtained an empirical fit to the ratio of the height of the scattering surface h and the midplane distance from the star r as follows: h r = 0.1617· r 100 au 0.219. (4) At the disk surface, the oblate grains are aligned with the mag-netic field. For the sake of simplicity, we assume that grains are Their surface reactivity is one source of the observed molecular complexity in space. In experimental astrophysics, the high reactivity of atoms also constitutes an obstacle to measuring two of the fundamental properties in surface physics, namely desorption and diffusion energies, and so far direct measurements are non-existent for O and N atoms.To discuss or join the program, please. Astronomy and Astrophysics (A&A) Maintains Stellar Reputation with Impressive Impact Factor and CiteScore, Demonstrating Consistent Growth. EDP Sciences and ESO Enhance Research Discoverability with Direct Links between Astronomy & Astrophysics and ESO Telescope Bibliography Records.Montserrat. Silva Ashen Bay 20 MIL x 9 in. W x 60 in. L Click Lock Waterproof Luxury Vinyl Plank Flooring (22.4 sqft/case) Product Details For a flush look and feel on the edge of your stairs, the installation of Moses Lake Flush Stairnose is an excellent match. This piece of matching hybrid rigid core is applied to the nose of the top step or landing area to create a seamless finish with a contemporary design. FablonOff-White Oak Minimal Adhesive Film (Set of 2) Add to Cart. Compare. $1506. Model# TFAB10044. Jun 12, 2015 · Figure 5 shows the ratio of the nitrogen-to-carbon surface abundance as a function of surface gravity for the ON stars 4 and for a reference sample of morphologically normal O stars taken from Martins et al. (2015). For the reference sample, only stars with spectral types between O8.5 and O9.7 are considered, corresponding to the spectral-type ... Get free shipping on qualified 1 year warranty, Vissani products or Buy Online Pick Up in Store today. FablonOff-White Oak Minimal Adhesive Film (Set of 2) Add to Cart. Compare. $1506. Model# TFAB10044. Mar 19, 2009 · Our construction is based on assuming distributions of angular momentum and entropy. For a particular choice of the distribution of angular momentum, we calculate the shapes of equipressure surfaces. The equipressure surfaces we find are similar to those in thick, slim and thin disks, and to those in ADAFs.

Trademark Introduction A&A SURFACES TRADEMARK INFORMATION M S INTERNATIONAL, INC. Updated October 30, 2020 Case File Details Classifications Case File Owner History Case File Statements Case File Event Statements Documents Retrieve USPTO Trademark Documents For This Filing Sponsored Links ADDITIONAL LINKS Search All Trademarks . Toro recycler 22 won

AandA Surfaces Dunhill Salvaged Forest 8.98 AandA Surfaces Dunhill Salvaged Forest 8.98 in. x 60 in. Luxury Vinyl Tile offers light-brown tones complemented by darker brown and grey-blue graining for an on-trend salvaged appearance. This 100% waterproof wood-look luxury vinyl plank is scratch, stain, and dent resistant, and backed by a lifetime ...Victory Surfaces is a Residential and Commercial Stone & Terrazzo Company specializing in Natural Stone Fabrication, Granite Countertops, Ceramic Tile, Terrazzo and Concrete. Victory Surfaces custom makes and installs everything from counter tops and bathtubs to stone tables of any size and unique, show stopping fountains. Location: 5720 ...surfaces across the loop and then present a new model of zebra sources where the DPR surfaces are observed from the direction perpendicular to the loop axis. The paper is organized as follows: in Sect.2we analyze the DPR surfaces. In Sect.3we derive the sizes of the zebra source, estimate the brightness temperature for three observed zebras, Jun 9, 2023 · When styling your bar cart or table, San Francisco–based designer Ken Fulk puts the emphasis on the creating a mood and look - no matter whether cocktail hour is just for yourself or you are entertaining guests. "I prefer to treat a bar cart as a tableau rather than simply a dispenser of drinks," says Fulk. "I often include flowers, favorite ... Name. 4 in. x 4 in. Copper Top Pyramid Post Cap. 4 in. x 4 in. Black Pyramid Post Cap with Pine Base. 4 in. x 4 in. Hammered Copper Pyramid Slip Over Fence Post Cap. 4 in. x 4 in. Copper Pyramid Slip Over Fence Post Cap. Price. $852. $985. $1795.the entire grain surface. For example, the formation rate of H 2 on grain surfaces is given by the equation (Caselli et al. 1998) d N (H 2) d t =0:5kH ;H N (H) N (H) ; (1) where N represents the average number of species per grain, and the rate coe cient kH ;H is the sum of inverse di usion times ( ts) for sweeping over the entire grain via Get free shipping on qualified Stain Resistant, TrafficMaster Vinyl Flooring products or Buy Online Pick Up in Store today in the Flooring Department. Simulated Eros-like asteroid, with high crater density (the surface partitioned into nearly 1500 patches). The total saturation is nearly 18% and the power law index B = 3. For simple craters, , while for fresh craters .67¢. Ideal for use in hot and cold water pressure distribution systems. Easy to install and joined by solvent cementing or threading. Female socket connections provide a branch line from a main line. View More Details. South Loop Store. 49 in stock Aisle 8, Bay 007. Triple Fitting Size: 3/4" x 3/4" x 3/4". 1/2" x 1/2" x 1/2".The objective here was to understand why the thermal inertias of surfaces of icy atmosphereless bodies observed in the solar system are so low, how the thermal dichotomy between Mimas leading and trailing faces can be understood in terms of changes in regolith properties and, finally, how/if the very low thermal inertia of Centaurs and TNOs or ...Mar 19, 2009 · Our construction is based on assuming distributions of angular momentum and entropy. For a particular choice of the distribution of angular momentum, we calculate the shapes of equipressure surfaces. The equipressure surfaces we find are similar to those in thick, slim and thin disks, and to those in ADAFs. .

Aanda surfaces - Simulated Eros-like asteroid, with high crater density (the surface partitioned into nearly 1500 patches). The total saturation is nearly 18% and the power law index B = 3.

Popular Topics