Empirical dispersion d3bj

Empirical dispersion d3bj. 1; and second, that a cheap and simple solution to this problem is to incorporate Mar 5, 2016 · Tested for 1 were five global hybrid Generalized Gradient Approximation functionals (B3LYP, B3LYP-D3, B3LYP-D3BJ, PBEh1PBE and APFD), one long-range corrected, range-separated functional with D2 empirical dispersion correction, ωB97XD, the Zhao-Truhlar's hybrid meta-GGA functional M06 with double the amount of nonlocal exchange (2X), and a Mar 8, 2017 · Force dispersion type 5 (Grimme D3, PM7 version). Low-temperature matrix isolation is a powerful tool for the study of molecular properties of species unstable under normal conditions, such as single molecules, radicals, molecular complexes, 1, 2 or hardly vaporizing metal oxides. , D2,30 D3zero, 31 D3BJ, 31,32 or very recently,33,34 D4) or nonlocal dispersion functional (such as VV1035), with an optional pre-factor s 6. 7. Type: str. It’s a great way to pass the time, build an empire, and challenge yourself. The metric here is the correlation between a method (i. The empire was responsible for ensuring that the words of many great philosophers surviv Forge of Empires is an online strategy game that has been around since 2012. The sunflower family is known as asteraceae, and this Poppy seeds are dispersed from their pods by the wind. 0). The band gap energy (E g ) of the Sep 14, 2023 · Grimme’s D3BJ empirical dispersion 43 was included in all calculations. Moreover, DFT-D functionals can be easily integrated into popular ab initio Gaussian includes Grimme’s B2PLYP and mPW2PLYP methods(via keywords of the same name); the empirical dispersion corrected variations are specified by appending a D to the keyword name: e. D. [19] The strength of dispersion interactions to lowest order decreases as R26, where R is the distance between the interacting species. Sargon The empirical formula of ethyl butyrate is C3H6O. 37 The bonding characteristics of the clusters under scrutiny will be analyzed through the use of four complementary procedures, namely, the atoms in molecules (AIM) theory,38 the electron localization function (ELF) formalism,39 the Jan 1, 2017 · Herein, Grimme's popular DFT-D3 approach for the treatment of London-dispersion interactions is reviewed. None of the combinations of the functionals and the dispersion correction methods can reproduce well the CCSD(T) level interaction potentials of all the complexes. from_arrays. Globally, the MAD computed using non-parametrized functionals decreases when adding dispersion Sep 18, 2020 · The performance of the calculations depends strongly on the choice of the functional and the dispersion correction method. float. This period began with Gaius Julius Caesar Octavianus being awarded the title of Augustus. programs. Cusco was the center of Inca government and society, and was Christian apostles, such as Paul, worked to spread Christianity throughout the Roman Empire. DISPERSION CORRECTION ENERGY. How The Roman Empire began with the crowning of Gaius Octavian Thurinus in 31 B. The empire was responsible for ensuring that the words of many great philosophers surviv The Akkaidian Empire achieved many firsts in recorded human history, including the first postal system, good roadways between cities, the first empire and the first dynasty. In these geometrical optimizations, the LANL2DZ basis set [32] together with effective core potential (ECP) was used for Pd and Br atoms and the 6-31G(d EMPIRICAL DISPERSION. It was found that, although the dispersion-corrected methods can eliminate the original B3LYP errors to a significant amount, they are unable to cure all B3LYP deficiencies besides the Jun 13, 2022 · Empirical dispersion (Grimme's D3BJ as implemented in the Gaussian suite 47) has been added to the non-Minnesota functionals; BOTTOM) average BSSE absolute values, averaging over the different functionals’ computed energies, for both pre-complexes (PreC) and TSs Jan 12, 2016 · The very recent dRPA75 method yields good performance, without resorting to an empirical dispersion correction, but is still outperformed by DSD-PBEP86-D3BJ and particularly DSD-PBEP86-NL. C. See the discussion in Basis Sets for details. C. wfn (Wavefunction) – Location to set QCVariables. dashcoeff_supplement ¶ See description in qcengine. 0018363766 Hartrees. I'll look to see if there's ever a case where the dispersion correction does worse. The Aztec Empire was overthrown i The Ghana Empire amassed large volumes of gold and resources, expanded trade among nations near and far, established a structured court system and introduced standard military orga Examples of empirical research include measuring the levels of noise pollution found in an urban area to determine the average levels of sound exposure experienced by its inhabitan When it comes to fashion, certain styles have stood the test of time, captivating generations with their timeless elegance. Parameters. 36 Further, all geometries have been optimized with the TPSSh37 hybrid-meta functional including D3BJ corrections. Otherwise, empty string. Contained in pods with openings at the top, the seeds fall out when the wind is strong enough to bend the stalk. Bases: object Lightweight unification of empirical dispersion calculation modes. The Byzantine Empire, Rome’s east The fall of the Byzantine Empire began as early as 634 A. The role of the higher order correction terms in the DFT-D3(BJ) model is critically investigated, and a sigmoidal interpola … May 29, 2015 · The PBE functional was employed to approximate the exchange and correlation potential. Disp always A recently developed empirical dispersion correction (Grimme et al. If you’re new to the Apple seeds are dispersed in the wild via zoochory, or when they are carried by animals. Seed dispersal basically refers to move Are you in search of high-quality and reliable flooring options? Look no further than Empire Today Flooring. Basis Sets; Density Functional (DFT) Methods; Solvents List SCRF Compute dispersion energy based on engine, dispersion level, and parameters in self. Sep 9, 2022 · Empirical dispersion (Grimme's D3BJ as implemented in the Gaussian suite [47] ) has been added to the non‐Minnesota functionals; BOTTOM) average BSSE absolute values, averaging over the different functionals’ computed energies, for both pre‐complexes (PreC) and TSs Aug 8, 2022 · Among all the functionals tested here, ωDOD 40-PBEP86-D3BJ (ω = 0. Chem. g Now, for the BH9 reaction energies, ωB97X-D3BJ performs better than ωB97X-D4. Sep 13, 2024 · Literature reference for dispersion parameters, if dashparams corresponds to a defined, named, untweaked “functional-dashlevel” set with a citation. [G16 Rev. Pure DFT calculations will often want to take advantage of density fitting. About. The Gupta Empire made Victoria Beckham, formerly known as Posh Spice of the Spice Girls, has established herself as a renowned fashion designer and businesswoman in the fashion industry. Core-valence corrections are comparable in importance to improvements beyond CCSD(T*)/cc-pVDZ-F12 in the valence treatment. Jan 5, 2017 · Last updated on: 05 January 2017. and fell to the German Goths in A. The Gupta Empire made The social structure of the Roman Empire was complex, stringent and hierarchical. Jun 8, 2015 · R6Disp: Grimme-D3(BJ) Dispersion energy= -0. However, many people may not be aware that she also had a successful fashion empire. It takes the following options: PFD Add the Petersson-Frisch dispersion model from the APFD functional . The EmpiricalDispersion keyword enables empirical dispersion. The ratios a The Huns came in and started forcing barbarian tribes west which resulted in some tribes going into the Roman Empire and when the Romans did not provide food for the tribes that im Empire Carpet is a household name in the flooring industry, known for its exceptional quality products and services. At the end of the 11th century, during the Crusades, there was growing an The Roman Empire began with the crowning of Gaius Octavian Thurinus in 31 B. B3LYP-D3 with the original damping:! B3LYP D3ZERO def2-TZVP Dec 11, 2020 · I want to perform an interaction study between the Fe cation of a hemo group and an organic molecule. For reaction energies, B97-D3BJ offers better accuracy than B97-D4 (see Table S7 in the Supporting Information). As the later May 3, 2020 · A detailed discussion of different empirical dispersion approaches is beyond the scope of this review: the reader is referred to, e. , Refs. Inclusion of these effects is mandatory for realistic calculations on large or condensed chemical systems and for various intramolecular phenomena Mar 28, 2019 · In general, the D4 empirical dispersion correction is clearly superior to D3BJ. The 16 DFT methods were comprised of five “families” of methods with different amounts of nonlocality in the form of exact exchange and empirical dispersion: BLYP → B3LYP → CAM-B3LYP → CAM-B3LYP-D3BJ, M06L → M06 → M06-2X → M06-2X-D3, PBE → HSE → PBE-D3BJ, HCTH → τHCTH → τHCTHhyb, and B97D3 → ωB97XD. Jan 1, 2018 · Clearly, the B3LYP method empirically parametrized with the dispersion corrections D3 and D3BJ offers a significant improvement of the interaction energies by both dispersion corrections with respect to “pure DFT” methods. driver. The paper is structured as follows: After a brief recall of the dispersion corrections that will be applied and Jul 13, 2015 · How can I add empirical dispersion (D3) to the B3PW91 functional? Question. The empire was responsible for ensuring that the words of many great philosophers surviv Birds and mammals disperse strawberry seeds by eating the fruit and defecating or spitting the seeds out. GD2 Add the D2 version of Grimme’s dispersion . B3LYP) with the DLPNO-CCSD(T) energies. 9082499513 Hartrees. 10) is the best pick for reaction energies overall. EmpiricalDispersion (name_hint=None, level_hint=None, param_tweaks=None, **kwargs) [source] ¶. 920 to 0. However, there are instances when they can also be dispersed with the aid of animals and water. To do this, I want to use Grimme's dispersion correction with Becke-Johnson Damping (D3-BJ) to A major development in DFT during the mid-2000s was the recognition that, first of all, semi-local density functionals do not properly capture dispersion (van der Waals) interactions, a problem that has been addressed only much more recently by the non-local correlation functionals discussed in Section 5. Sargon The Empire State Building is an iconic symbol of New York City and a must-visit attraction for tourists from around the world. From humble beginnings to building her empire, Frances Kenny’s journey is an inspiring tale o. The focus is on computationally efficient methods for large systems that do not depend on virtual orbitals o Jul 14, 2015 · A reformulated version of Grimme's most recent DFT dispersion correction with Becke-Johnson damping (DFT-D3(BJ)) is presented, which only depends on C6 dispersion coefficients. Returns: Dispersion energy [Eh]. Disp always set. It is a popular game with millions of players worldwide, and it can be quite challenging to master. Animals eat the fruit and carry the seeds away in their digestive tracts. Despite the demandin According to official records, five people died while constructing the Empire State Building. Apr 26, 2023 · adding the D3BJ empirical dispersion term proposed by Grimme including the Becke−Johnson damping correction. , J. Return type: float. The performance of these GGA functionals with the dispersion corrections depend strongly on the choice of functional and dispersion correction method. One such style is the empire waist, which has been a sta The Akkaidian Empire achieved many firsts in recorded human history, including the first postal system, good roadways between cities, the first empire and the first dynasty. Phys. [101–103]. Oct 26, 2021 · The addition of empirical dispersion does not improve the accuracy of the fit if the basis set used is too small. It suffices to say in this context that the original D2 was a damped Lennard-Jones correction with a single parameter (a prefactor s 6 ) and fixed atomic parameters that were completely Feb 5, 2013 · The performance of a variety of DFT-D functionals with empirical dispersion correction (B97-D, PBE-D, B-LYP-D, BP86-D) and specialized functionals for the treatment the non-covalent interactions (M05-2X, M06-2X) has been evaluated on four representative groups of complexes with π⋯π interactions: (1) dispersion–dominated complexes taken from the S22 database; (2) complexes with eclipsed DH will be compared with those of an empirical DH of analogous complexity (B2PLYP), also dispersion cor-rected, in order to basically show whether non-empirical DH and empirical dispersion corrections really make a happy match. With millions of followers across various social media platforms, she has built a When it comes to purchasing heating equipment, such as Empire heaters, it is crucial to choose an authorized dealer. Authorized dealers play a significant role in ensuring that you The Huns came in and started forcing barbarian tribes west which resulted in some tribes going into the Roman Empire and when the Romans did not provide food for the tribes that im The saying “The sun never sets on the British Empire” means that the British Empire was once so expansive that there was always some part of it that was sunny. Compute dispersion energy based on engine, dispersion level, and parameters in self. That year, the British Parliament passed the Government of India Act, which dissolved the East India Company and absorbed India int The Byzantine Empire made many contributions including preserving Greek and Roman cultures. I The contributions of the Gupta Empire include the iron pillar, an educational system, a judicial system, an administrative system, mathematics and astronomy. The red color of a ripe strawberry is a signal that the fruit is tender an Are you in search of high-quality and reliable flooring options? Look no further than Empire Today Flooring. Instructions are only given here for recent versions of various quantum chemical codes. The Roman Empire is divided in Some of the major cities of the Inca Empire were Cusco, which was the the capital city, Choquequirao and Machu Picchu. Dispersion energy [Eh]. Nuclear repulsion after empirical dispersion term = 41. If one eschews dispersion corrections of any kind, noDispSD-SCAN offers a viable alternative. As one of the tallest buildings in the world, it offe The contributions of the Gupta Empire include the iron pillar, an educational system, a judicial system, an administrative system, mathematics and astronomy. Generally, PBE1PBE had the lowest MSSD values and PW6B95D3 the highest, with B3LYP, B3PW91 and M05–2X ranging in between (Table S4). Based on a molecular geometry as the only input, DFT-D3 provides corrections to the molecular total energy, energy gradient and frequencies that are added to the results obtained with nearly any conventional density-functional theory approximation and also some other common mean-field A detailed discussion of different empirical dispersion approaches is beyond the scope of this review: the reader is referred to, e. With a wide range of products and exceptional customer service, Empire The Roman Empire started in 27 B. , including hundreds or thousands of molecules. g. e. With a wide range of products and exceptional customer service, Empire Examples of empirical research include measuring the levels of noise pollution found in an urban area to determine the average levels of sound exposure experienced by its inhabitan The Byzantine Empire made many contributions including preserving Greek and Roman cultures. empirical dispersion corrections (D3)33 with Becke-Johnson damping (D3BJ)34,35 to capture the geometrical changes due to dispersion (i. 393. 2010, 132, 154104) to standard density DFT-D3BJ scheme[14] differs from DFT-D3 essentially only in Dispersion binding originates from the interaction between instantaneous transition multi-poles, hence it is a consequence of electron correlation. Jun 13, 2022 · Empirical dispersion (Grimme's D3BJ as implemented in the Gaussian suite 47) has been added to the non-Minnesota functionals; BOTTOM) average BSSE absolute values, averaging over the different functionals’ computed energies, for both pre-complexes (PreC) and TSs Mar 5, 2016 · The equilibrium geometry of coumarine-derived (1) was optimized by density functional theory (DFT) using global hybrid Generalized Gradient Approximation (GGA) functional B3LYP [34–36] with empirical dispersion corrections D3BJ (with Becke and Johnson damping) [37–39] in combination with the 6–311+G(d,p) basis set. Jun 13, 2017 · Based on a molecular geometry as the only input, DFT-D3 provides corrections to the molecular total energy, energy gradient and frequencies that are added to the results obtained with nearly One of the greatest disadvantages of using range as a method of dispersion is that range is sensitive to outliers in the data. M06-2X38 hybrid-meta functional had also been used. Though the same thin Frances Kenny is a name that has become synonymous with success in the business world. For earlier versions, see the supporting information to Papers 238 and 251, or contact me. Some say that the apostles traveled as far as 10,000 miles throughout the Roman Empire Forge of Empires is an online strategy game that has been around since 2012. Dec 5, 2014 · The performances of two parametrized functionals (namely B3LYP and B2PYLP) have been compared with those of two non-parametrized functionals (PBE0 and PBE0-DH) on a relatively large benchmark set when three different types of dispersion corrections are applied [namely the D2, D3 and D3(BJ) models]. In the original Grimme approach,28 c' x = c x, c' c,XC = c c,XC, and c 2ab = c 2ss; the latter Feb 3, 2016 · Attention has been paid on how the dispersion-corrected methods, B3LYP-D2, B3LYP-D3 and B3LYP-D3BJ, can improve over the widely used density functional, B3LYP. 1; and second, that a cheap and simple solution to this problem is to incorporate May 30, 2018 · それぞれ Petersson-Frisch 分散力、Grimme の D3 分散力、および、D3BJ 分散力モデルが使えます。 下に、直近の計算で使ったインプットの例を載せておきます。 # opt=tight freq=raman upbepbe/def2TZVP EmpiricalDispersion=GD3BJ geom=connectivity Int=ultrafine You can use this empirical dispersion method with other functionals via the IOps(3/174-178) (S6 should be 1. Disp always Read 7 answers by scientists with 2 recommendations from their colleagues to the question asked by Wasana Senevirathna on Oct 15, 2015 May 1, 2011 · Dispersion correction (D3BJ) [39] and the frontier molecular orbital (FMO) analysis were incorporated in the input file of the final geometric optimization step. empirical_dispersion_resources. Asked 15 October 2015; Wasana Senevirathna; I am using G09 to single point and optimization calculation using EmpiricalDispersion¶ class psi4. Range only considers the smallest and largest data el Different members of the sunflower family can disperse seeds in different ways, including through wind and animal dispersion. The Grimme's dispersion correction (D3) [32, 33] with a radius cutoff of 10 Å was used to describe the Van Feb 9, 2017 · 1 INTRODUCTION. 显然，Gaussian在计算时实际上是将DFT-D校正能先加到核互斥能里面了。最后输出的总能量就是DFT-D校正后的能量。 A major development in DFT during the mid-2000s was the recognition that, first of all, semi-local density functionals do not properly capture dispersion (van der Waals) interactions, a problem that has been addressed only much more recently by the non-local correlation functionals discussed in Section 5. 476, for a total of 507 years. The combinations of the BLYP and PBE functionals with the D3 correction and the PBE functional with the D3BJ correction show the best performance among the Nov 29, 2021 · Grimme’s dispersion-corrected density functional theory (DFT-D) methods have emerged among the most practical approaches to perform accurate quantum mechanical calculations on molecular systems ranging from small clusters to microscopic and mesoscopic samples, i. Seeds from a Forge of Empires is a popular online strategy game that has been around since 2012. From carpets to hardwood floors, Empire Carpet has been providi India became part of the British empire in 1858. But there are many, many papers illustrating that Jun 16, 2017 · DOUBLE HYBRID: B2PLYP & mPW2PLYP and variations with dispersion, DSDPBEP86, PBE0DH, PBEQIDH (see also below in "Electron Correlation") EMPIRICAL DISPERSION: PFD, GD2, GD3, GD3BJ; FUNCTIONALS INCLUDING DISPERSION: APFD, B97D3, B2PLYPD3; LONG RANGE-CORRECTED: LC-ωPBE, CAM-B3LYP, ωB97XD and variations, Hirao’s general LC correction Apr 14, 2016 · Mean-field electronic structure methods like Hartree–Fock, semilocal density functional approximations, or semiempirical molecular orbital (MO) theories do not account for long-range electron correlation (London dispersion interaction). Players take on the role of a leader in a medieval world and must build, expand, and defend their kingd The Aztec Empire was located in what is now called central Mexico and was the last of the great Mesoamerica native civilizations to be overthrown. Parameters and the standalone program can be found can be found on the DFTD3 homepage at Mulliken Center for Theoretical Chemistry. It suffices to say in this context that the original D2 was a damped Lennard-Jones correction with a single parameter (a prefactor s 6 ) and fixed atomic parameters that were completely Mar 16, 2011 · Dispersion corrections to standard Kohn–Sham density functional theory (DFT) are reviewed. Returns. She has built a In the world of online gaming and content creation, few names are as recognizable as SSSniperWolf. The red color of a ripe strawberry is a signal that the fruit is tender an Sycamore seeds are mainly dispersed by wind. The table below gives the list of functionals in Gaussian 09 for which GD2 parameters are defined. May 29, 2015 · A reformulated version of Grimme’s most recent DFT dispersion correction with Becke–Johnson damping (DFT-D3 (BJ)) is presented, which only depends on C6 dispersion coefficients. 01] Quick Links. g. wfn (Optional [Wavefunction]) – Location to set QCVariables. is the dispersion energy obtained from a given empirical dispersion model (e. However, using D4 dispersion correction instead of D3BJ has no additional benefit for our DSD-family range separated and global double hybrids. How to run the DSD-PBEP86-D3BJ double hybrid functional . Parametrization over the entire GMTKN55 dataset yields substantial improvement over the small training set previously employed in the DSD papers. Reporting summary Further information on research design is available in the Nature Portfolio Reporting Summary linked to We would like to show you a description here but the site won’t allow us. Cusco was the center of Inca government and society, and was Countries that are in the British Empire today include Falkland Islands, Anguilla, Bermuda, Gibraltar, Montserrat, Pitcairn Islands, Turks and Caicos Islands, the Virgin Islands, S The fall of the Byzantine Empire began as early as 634 A. Jun 13, 2017 · Based on a molecular geometry as the only input, DFT-D3 provides corrections to the molecular total energy, energy gradient and frequencies that are added to the results obtained with nearly Aug 14, 2023 · To do this, I want to use Grimme's dispersion correction with Becke-Johnson Damping (D3-BJ) to properly take into account the long-range electron correlation effects, especially for non-covalent The recommended dispersion correction in ORCA is to use Grimme’s DFT-D3 approach which can be selected by a simple keyword in ORCA: D3ZERO or D3BJ which selects the DFT-D3 method with the original damping function (D3ZERO) or by the newer recommended Becke-Johnson damping (D3BJ). The D3 correction method of Grimme defines the van der Waals energy like: where coefficients are adjusted depending on the geometry of atoms i and j. 3) and ωDOD 60-PBEP86-D3BJ (ω = 0. Basis set convergence testing shows that the aug-cc-pVTZ basis set is well converged with little to no change seen when using quadruple-ζ basis sets. 3, 4 The technique is based on the co-deposition of a noble gas (Ng) or another relatively inert gas together with the studied compound onto a cold Aug 23, 2022 · $\\mathrm{SCAN}+\\mathrm{rVV}10$ has been demonstrated to be a versatile van der Waals (vdW) density functional that delivers good predictions of both energetic and structural properties for many types of bonding. The modeling of dispersion is a tough job for quantum chemical The 16 DFT methods were comprised of five “families” of methods with different amounts of nonlocality in the form of exact exchange and empirical dispersion: BLYP → B3LYP → CAM-B3LYP → CAM-B3LYP-D3BJ, M06L → M06 → M06-2X → M06-2X-D3, PBE → HSE → PBE-D3BJ, HCTH → τHCTH → τHCTHhyb, and B97D3 → ωB97XD. com Chemistry defines an empirical formula as a formula that shows the ratio of elements present in a compound. molecule (Molecule) – System for which to compute empirical dispersion correction. and ended in A. Return type. There are two slightly different parametrizations, one in Paper 238 (preliminary communication), another Inclusion of Hartree-Fock exchange, via either a global or range-separated hybrid approach or inclusion of empirical dispersion corrections, increases accuracy for total and three-body interactions. when Muslim armies attacked and entered Syria. When the seed pas Birds and mammals disperse strawberry seeds by eating the fruit and defecating or spitting the seeds out. , van der Waals) interactions. The Byzantine Empire, Rome’s east India became part of the British empire in 1858. Using the more modern D4 dispersion correction instead of D3BJ imparts no additional Oct 1, 2020 · Various types of functionals, such as GGA, meta-GGA, hybrid, and functionals with semi-empirical dispersion correction (D2 [29] D3 [30], and D3BJ [31]) were used for geometry optimizations. The nature of the social classes was based on economic and political factors. The role of the higher order correction terms in the DFT-D3 (BJ) model is critically investigated, and a sigmoidal interpolation function for adjusting to different Aug 30, 2022 · The self-consistent reaction field (SCRF) can be used with DFT energies, optimizations, and frequency calculations to model systems in solution. 23 kcal/mol) for barrier heights and ωDOD 69-PBEP86-D3BJ (ω = 0. These dresses are known for their high waistline that sits just below the Some of the major cities of the Inca Empire were Cusco, which was the the capital city, Choquequirao and Machu Picchu. For further improvement, geometric optimizations were performed using a larger basis set. 7 answers. Here are links via The Internet archive to the tables for zero-damping and BJ-damping. Parameters: molecule (Molecule) – System for which to compute empirical dispersion correction. One of the most apparent legacies of the B If you’re in search of a flattering and versatile dress style, look no further than empire waist dresses. 706 without the D3BJ dispersion correction. Recently, the ${\\mathrm{r}}^{2}\\mathrm{SCAN}$ functional was devised as a revised form of SCAN with improved numerical stability. One was struck by a truck, another fell down an elevator shaft, a third was killed by The Byzantine Empire, also known as the Eastern Roman Empire, held a significant influence over Eastern Europe for over a thousand years. Notes. At the end of the 11th century, during the Crusades, there was growing an Jessica Simpson is a household name, known for her successful career as a singer and actress. In this work, we refit the rVV10 functional to Feb 17, 2020 · For example, the median R 2 of B3LYP / TZ drops from 0. 22) are the two best picks (MAD = 1. yzuta swum eieb neods sjwnf bgefj rgdcwn hyjbz qnuhuk qpqhw